By Little Houses For SaleUpdated

Oregon Tiny House Zoning Laws Overview

Oregon regulates small dwellings through state building codes and a strong land use system. Foundation-built tiny houses are reviewed under the Oregon Residential Specialty Code with Appendix Q for homes of 400 square feet or less. The Building Codes Division oversees statewide adoptions, while local building departments handle plan review and inspections. Oregon also encourages accessory dwelling units in many urban areas through reforms such as SB 1051 and HB 2001, which curb barriers like mandatory owner occupancy and some off‑street parking rules. Movable tiny houses on wheels are normally treated like recreational vehicles for registration and safety, and their use as a residence depends on local zoning and utility hookups. Because Oregon includes coastal, valley, mountain, and high desert regions, site constraints can vary widely. Applicants should confirm which government has zoning authority on a parcel, check the applicable development code for ADUs or small dwellings, and coordinate early with health departments on water and wastewater solutions. Wildfire defensible space, access grades, and floodplain or tsunami maps can also influence feasibility. The high level process is straightforward: verify jurisdiction, confirm use permissions, design to the adopted code set, and document utilities, access, and life safety for permit submittal.

Oregon widely supports ADUs in urban areas. Long term living in a tiny house on wheels is decided locally by zoning and utilities.

Understanding the zoning laws is just the first step. Once you know what is legal in Oregon, you can start looking at tiny houses for sale in Oregon or connect with experienced Oregon builders who work within these regulations. If you want a turnkey solution, consider joining a tiny house community in Oregon where all the zoning and permits are already handled.

Before you buy land or start construction, use our zoning finder tool to check specific county requirements, and get a budget estimate with our free tiny house cost calculator. If you're planning to go off-grid, check out our comprehensive off-grid living guide to understand utility and septic requirements.

Oregon County-by-County Tiny House Zoning Guide

Select a county to view specific zoning regulations, minimum square footage requirements, and official resources.

Detailed Oregon County Tiny House Regulations

Many tiny house buyers in Oregon work with professional builders who already understand these local rules. These companies can handle the permit process and make sure your home meets all the safety codes. Browse our list of top-rated Oregon builders to find someone who can help.

Not sure if building or buying is right for you? Read our complete tiny house buyer's guide to understand all your options, or explore available tiny houses for sale in Oregon that may already meet local zoning requirements.

OregonGray

Baker County

Baker County, Oregon

In Baker County, tiny house feasibility begins with who regulates the land and what the local code allows on that specific lot. A foundation built tiny home follows the Oregon Residential Specialty Code with Appendix Q. A tiny house on wheels is usually treated like an RV, so long term residential use depends on zoning and confirmed utility hookups. Practical path: identify the governing jurisdiction, confirm whether the zone allows ADUs or small dwellings, map utilities, then prepare a permit ready plan set. Applicants should verify floodplain, wildfire, and driveway standards early to avoid redesign later.

Minimum sq ft
Appendix Q supports very small habitable rooms; confirm any local minimum floor area in the zone.
Foundation
Permanent small homes are reviewed as dwellings under the Oregon Residential Specialty Code and inspected by the local building department.
THOW
Movable tiny houses are typically classed like RVs. Long term living requires zoning allowance and approved water, sewer, and power.
OregonGray

Benton County

Benton County, Oregon

Benton County handles small dwellings through standard planning and building procedures that tie back to Oregon’s adopted residential code. University demand can push interest in compact units for intergenerational housing and rental flexibility, so ADU provisions matter. A foundation built tiny home follows the Oregon Residential Specialty Code with Appendix Q. A tiny house on wheels is usually treated like an RV, so long term residential use depends on zoning and confirmed utility hookups. Practical path: identify the governing jurisdiction, confirm whether the zone allows ADUs or small dwellings, map utilities, then prepare a permit ready plan set. Applicants should verify floodplain, wildfire, and driveway standards early to avoid redesign later.

Minimum sq ft
Appendix Q supports very small habitable rooms; confirm any local minimum floor area in the zone.
Foundation
Permanent small homes are reviewed as dwellings under the Oregon Residential Specialty Code and inspected by the local building department.
THOW
Movable tiny houses are typically classed like RVs. Long term living requires zoning allowance and approved water, sewer, and power.
OregonGray

Clackamas County

Clackamas County, Oregon

Clackamas County handles small dwellings through standard planning and building procedures that tie back to Oregon’s adopted residential code. Metro growth areas often rely on ADU friendly infill tools; utilities are usually available, so the key variables are setbacks, height, and parking. Forest resource zones bring slope stability, road standards, and vegetation management into the siting conversation for safety and erosion control. A foundation built tiny home follows the Oregon Residential Specialty Code with Appendix Q. A tiny house on wheels is usually treated like an RV, so long term residential use depends on zoning and confirmed utility hookups. Practical path: identify the governing jurisdiction, confirm whether the zone allows ADUs or small dwellings, map utilities, then prepare a permit ready plan set.

Minimum sq ft
Appendix Q supports very small habitable rooms; confirm any local minimum floor area in the zone.
Foundation
Permanent small homes are reviewed as dwellings under the Oregon Residential Specialty Code and inspected by the local building department.
THOW
Movable tiny houses are typically classed like RVs. Long term living requires zoning allowance and approved water, sewer, and power.
OregonGray

Clatsop County

Clatsop County, Oregon

In Clatsop County, tiny house feasibility begins with who regulates the land and what the local code allows on that specific lot. Coastal siting adds seawater corrosion, flood elevations, and tsunami evacuation routes to the early checklist, and some shorelines carry extra overlays. A foundation built tiny home follows the Oregon Residential Specialty Code with Appendix Q. A tiny house on wheels is usually treated like an RV, so long term residential use depends on zoning and confirmed utility hookups. Practical path: identify the governing jurisdiction, confirm whether the zone allows ADUs or small dwellings, map utilities, then prepare a permit ready plan set. Applicants should verify floodplain, wildfire, and driveway standards early to avoid redesign later.

Minimum sq ft
Appendix Q supports very small habitable rooms; confirm any local minimum floor area in the zone.
Foundation
Permanent small homes are reviewed as dwellings under the Oregon Residential Specialty Code and inspected by the local building department.
THOW
Movable tiny houses are typically classed like RVs. Long term living requires zoning allowance and approved water, sewer, and power.
OregonGray

Columbia County

Columbia County, Oregon

In Columbia County, tiny house feasibility begins with who regulates the land and what the local code allows on that specific lot. Coastal siting adds seawater corrosion, flood elevations, and tsunami evacuation routes to the early checklist, and some shorelines carry extra overlays. Agricultural and vineyard districts include Exclusive Farm Use and related overlays that restrict non farm dwellings and intensities of use. Forest resource zones bring slope stability, road standards, and vegetation management into the siting conversation for safety and erosion control. A foundation built tiny home follows the Oregon Residential Specialty Code with Appendix Q. A tiny house on wheels is usually treated like an RV, so long term residential use depends on zoning and confirmed utility hookups. Practical path: identify the governing jurisdiction, confirm whether the zone allows ADUs or small dwellings, map utilities, then prepare a permit ready plan set.

Minimum sq ft
Appendix Q supports very small habitable rooms; confirm any local minimum floor area in the zone.
Foundation
Permanent small homes are reviewed as dwellings under the Oregon Residential Specialty Code and inspected by the local building department.
THOW
Movable tiny houses are typically classed like RVs. Long term living requires zoning allowance and approved water, sewer, and power.
OregonGray

Coos County

Coos County, Oregon

Coos County handles small dwellings through standard planning and building procedures that tie back to Oregon’s adopted residential code. Coastal siting adds seawater corrosion, flood elevations, and tsunami evacuation routes to the early checklist, and some shorelines carry extra overlays. Forest resource zones bring slope stability, road standards, and vegetation management into the siting conversation for safety and erosion control. A foundation built tiny home follows the Oregon Residential Specialty Code with Appendix Q. A tiny house on wheels is usually treated like an RV, so long term residential use depends on zoning and confirmed utility hookups. Practical path: identify the governing jurisdiction, confirm whether the zone allows ADUs or small dwellings, map utilities, then prepare a permit ready plan set.

Minimum sq ft
Appendix Q supports very small habitable rooms; confirm any local minimum floor area in the zone.
Foundation
Permanent small homes are reviewed as dwellings under the Oregon Residential Specialty Code and inspected by the local building department.
THOW
Movable tiny houses are typically classed like RVs. Long term living requires zoning allowance and approved water, sewer, and power.
OregonGray

Crook County

Crook County, Oregon

In Crook County, tiny house feasibility begins with who regulates the land and what the local code allows on that specific lot. High desert conditions favor careful water planning, on site wastewater design, and wind exposure details for small footprints. A foundation built tiny home follows the Oregon Residential Specialty Code with Appendix Q. A tiny house on wheels is usually treated like an RV, so long term residential use depends on zoning and confirmed utility hookups. Practical path: identify the governing jurisdiction, confirm whether the zone allows ADUs or small dwellings, map utilities, then prepare a permit ready plan set. Applicants should verify floodplain, wildfire, and driveway standards early to avoid redesign later.

Minimum sq ft
Appendix Q supports very small habitable rooms; confirm any local minimum floor area in the zone.
Foundation
Permanent small homes are reviewed as dwellings under the Oregon Residential Specialty Code and inspected by the local building department.
THOW
Movable tiny houses are typically classed like RVs. Long term living requires zoning allowance and approved water, sewer, and power.
OregonGray

Curry County

Curry County, Oregon

In Curry County, tiny house feasibility begins with who regulates the land and what the local code allows on that specific lot. Coastal siting adds seawater corrosion, flood elevations, and tsunami evacuation routes to the early checklist, and some shorelines carry extra overlays. A foundation built tiny home follows the Oregon Residential Specialty Code with Appendix Q. A tiny house on wheels is usually treated like an RV, so long term residential use depends on zoning and confirmed utility hookups. Practical path: identify the governing jurisdiction, confirm whether the zone allows ADUs or small dwellings, map utilities, then prepare a permit ready plan set. Applicants should verify floodplain, wildfire, and driveway standards early to avoid redesign later.

Minimum sq ft
Appendix Q supports very small habitable rooms; confirm any local minimum floor area in the zone.
Foundation
Permanent small homes are reviewed as dwellings under the Oregon Residential Specialty Code and inspected by the local building department.
THOW
Movable tiny houses are typically classed like RVs. Long term living requires zoning allowance and approved water, sewer, and power.
OregonGray

Deschutes County

Deschutes County, Oregon

Deschutes County handles small dwellings through standard planning and building procedures that tie back to Oregon’s adopted residential code. High desert conditions favor careful water planning, on site wastewater design, and wind exposure details for small footprints. A foundation built tiny home follows the Oregon Residential Specialty Code with Appendix Q. A tiny house on wheels is usually treated like an RV, so long term residential use depends on zoning and confirmed utility hookups. Practical path: identify the governing jurisdiction, confirm whether the zone allows ADUs or small dwellings, map utilities, then prepare a permit ready plan set. Applicants should verify floodplain, wildfire, and driveway standards early to avoid redesign later.

Minimum sq ft
Appendix Q supports very small habitable rooms; confirm any local minimum floor area in the zone.
Foundation
Permanent small homes are reviewed as dwellings under the Oregon Residential Specialty Code and inspected by the local building department.
THOW
Movable tiny houses are typically classed like RVs. Long term living requires zoning allowance and approved water, sewer, and power.
OregonGray

Douglas County

Douglas County, Oregon

In Douglas County, tiny house feasibility begins with who regulates the land and what the local code allows on that specific lot. Foothill and canyon parcels raise wildfire defensible space, driveway grades, and turnarounds that affect layout and material choices. Forest resource zones bring slope stability, road standards, and vegetation management into the siting conversation for safety and erosion control. A foundation built tiny home follows the Oregon Residential Specialty Code with Appendix Q. A tiny house on wheels is usually treated like an RV, so long term residential use depends on zoning and confirmed utility hookups. Practical path: identify the governing jurisdiction, confirm whether the zone allows ADUs or small dwellings, map utilities, then prepare a permit ready plan set.

Minimum sq ft
Appendix Q supports very small habitable rooms; confirm any local minimum floor area in the zone.
Foundation
Permanent small homes are reviewed as dwellings under the Oregon Residential Specialty Code and inspected by the local building department.
THOW
Movable tiny houses are typically classed like RVs. Long term living requires zoning allowance and approved water, sewer, and power.
OregonGray

Gilliam County

Gilliam County, Oregon

In Gilliam County, tiny house feasibility begins with who regulates the land and what the local code allows on that specific lot. Large tracts and sparse utilities mean sanitation, legal access, and emergency response times get close attention in rural reviews. Parcels within the Columbia River Gorge National Scenic Area trigger special review layers that sit on top of county requirements. A foundation built tiny home follows the Oregon Residential Specialty Code with Appendix Q. A tiny house on wheels is usually treated like an RV, so long term residential use depends on zoning and confirmed utility hookups. Practical path: identify the governing jurisdiction, confirm whether the zone allows ADUs or small dwellings, map utilities, then prepare a permit ready plan set.

Minimum sq ft
Appendix Q supports very small habitable rooms; confirm any local minimum floor area in the zone.
Foundation
Permanent small homes are reviewed as dwellings under the Oregon Residential Specialty Code and inspected by the local building department.
THOW
Movable tiny houses are typically classed like RVs. Long term living requires zoning allowance and approved water, sewer, and power.
OregonGray

Grant County

Grant County, Oregon

Grant County reviews tiny house proposals within Oregon’s statewide code structure, then applies its development code to the parcel and zone. Large tracts and sparse utilities mean sanitation, legal access, and emergency response times get close attention in rural reviews. A foundation built tiny home follows the Oregon Residential Specialty Code with Appendix Q. A tiny house on wheels is usually treated like an RV, so long term residential use depends on zoning and confirmed utility hookups. Practical path: identify the governing jurisdiction, confirm whether the zone allows ADUs or small dwellings, map utilities, then prepare a permit ready plan set. Applicants should verify floodplain, wildfire, and driveway standards early to avoid redesign later.

Minimum sq ft
Appendix Q supports very small habitable rooms; confirm any local minimum floor area in the zone.
Foundation
Permanent small homes are reviewed as dwellings under the Oregon Residential Specialty Code and inspected by the local building department.
THOW
Movable tiny houses are typically classed like RVs. Long term living requires zoning allowance and approved water, sewer, and power.
OregonGray

Harney County

Harney County, Oregon

Harney County handles small dwellings through standard planning and building procedures that tie back to Oregon’s adopted residential code. High desert conditions favor careful water planning, on site wastewater design, and wind exposure details for small footprints. Large tracts and sparse utilities mean sanitation, legal access, and emergency response times get close attention in rural reviews. A foundation built tiny home follows the Oregon Residential Specialty Code with Appendix Q. A tiny house on wheels is usually treated like an RV, so long term residential use depends on zoning and confirmed utility hookups. Practical path: identify the governing jurisdiction, confirm whether the zone allows ADUs or small dwellings, map utilities, then prepare a permit ready plan set.

Minimum sq ft
Appendix Q supports very small habitable rooms; confirm any local minimum floor area in the zone.
Foundation
Permanent small homes are reviewed as dwellings under the Oregon Residential Specialty Code and inspected by the local building department.
THOW
Movable tiny houses are typically classed like RVs. Long term living requires zoning allowance and approved water, sewer, and power.
OregonGray

Hood River County

Hood River County, Oregon

Hood River County handles small dwellings through standard planning and building procedures that tie back to Oregon’s adopted residential code. Foothill and canyon parcels raise wildfire defensible space, driveway grades, and turnarounds that affect layout and material choices. Agricultural and vineyard districts include Exclusive Farm Use and related overlays that restrict non farm dwellings and intensities of use. Parcels within the Columbia River Gorge National Scenic Area trigger special review layers that sit on top of county requirements. A foundation built tiny home follows the Oregon Residential Specialty Code with Appendix Q. A tiny house on wheels is usually treated like an RV, so long term residential use depends on zoning and confirmed utility hookups. Practical path: identify the governing jurisdiction, confirm whether the zone allows ADUs or small dwellings, map utilities, then prepare a permit ready plan set.

Minimum sq ft
Appendix Q supports very small habitable rooms; confirm any local minimum floor area in the zone.
Foundation
Permanent small homes are reviewed as dwellings under the Oregon Residential Specialty Code and inspected by the local building department.
THOW
Movable tiny houses are typically classed like RVs. Long term living requires zoning allowance and approved water, sewer, and power.
OregonGray

Jackson County

Jackson County, Oregon

In Jackson County, tiny house feasibility begins with who regulates the land and what the local code allows on that specific lot. Foothill and canyon parcels raise wildfire defensible space, driveway grades, and turnarounds that affect layout and material choices. A foundation built tiny home follows the Oregon Residential Specialty Code with Appendix Q. A tiny house on wheels is usually treated like an RV, so long term residential use depends on zoning and confirmed utility hookups. Practical path: identify the governing jurisdiction, confirm whether the zone allows ADUs or small dwellings, map utilities, then prepare a permit ready plan set. Applicants should verify floodplain, wildfire, and driveway standards early to avoid redesign later.

Minimum sq ft
Appendix Q supports very small habitable rooms; confirm any local minimum floor area in the zone.
Foundation
Permanent small homes are reviewed as dwellings under the Oregon Residential Specialty Code and inspected by the local building department.
THOW
Movable tiny houses are typically classed like RVs. Long term living requires zoning allowance and approved water, sewer, and power.
OregonGray

Jefferson County

Jefferson County, Oregon

In Jefferson County, tiny house feasibility begins with who regulates the land and what the local code allows on that specific lot. Foothill and canyon parcels raise wildfire defensible space, driveway grades, and turnarounds that affect layout and material choices. High desert conditions favor careful water planning, on site wastewater design, and wind exposure details for small footprints. A foundation built tiny home follows the Oregon Residential Specialty Code with Appendix Q. A tiny house on wheels is usually treated like an RV, so long term residential use depends on zoning and confirmed utility hookups. Practical path: identify the governing jurisdiction, confirm whether the zone allows ADUs or small dwellings, map utilities, then prepare a permit ready plan set.

Minimum sq ft
Appendix Q supports very small habitable rooms; confirm any local minimum floor area in the zone.
Foundation
Permanent small homes are reviewed as dwellings under the Oregon Residential Specialty Code and inspected by the local building department.
THOW
Movable tiny houses are typically classed like RVs. Long term living requires zoning allowance and approved water, sewer, and power.
OregonGray

Josephine County

Josephine County, Oregon

In Josephine County, tiny house feasibility begins with who regulates the land and what the local code allows on that specific lot. Foothill and canyon parcels raise wildfire defensible space, driveway grades, and turnarounds that affect layout and material choices. Forest resource zones bring slope stability, road standards, and vegetation management into the siting conversation for safety and erosion control. A foundation built tiny home follows the Oregon Residential Specialty Code with Appendix Q. A tiny house on wheels is usually treated like an RV, so long term residential use depends on zoning and confirmed utility hookups. Practical path: identify the governing jurisdiction, confirm whether the zone allows ADUs or small dwellings, map utilities, then prepare a permit ready plan set.

Minimum sq ft
Appendix Q supports very small habitable rooms; confirm any local minimum floor area in the zone.
Foundation
Permanent small homes are reviewed as dwellings under the Oregon Residential Specialty Code and inspected by the local building department.
THOW
Movable tiny houses are typically classed like RVs. Long term living requires zoning allowance and approved water, sewer, and power.
OregonGray

Klamath County

Klamath County, Oregon

Klamath County reviews tiny house proposals within Oregon’s statewide code structure, then applies its development code to the parcel and zone. Foothill and canyon parcels raise wildfire defensible space, driveway grades, and turnarounds that affect layout and material choices. Forest resource zones bring slope stability, road standards, and vegetation management into the siting conversation for safety and erosion control. A foundation built tiny home follows the Oregon Residential Specialty Code with Appendix Q. A tiny house on wheels is usually treated like an RV, so long term residential use depends on zoning and confirmed utility hookups. Practical path: identify the governing jurisdiction, confirm whether the zone allows ADUs or small dwellings, map utilities, then prepare a permit ready plan set.

Minimum sq ft
Appendix Q supports very small habitable rooms; confirm any local minimum floor area in the zone.
Foundation
Permanent small homes are reviewed as dwellings under the Oregon Residential Specialty Code and inspected by the local building department.
THOW
Movable tiny houses are typically classed like RVs. Long term living requires zoning allowance and approved water, sewer, and power.
OregonGray

Lake County

Lake County, Oregon

Lake County reviews tiny house proposals within Oregon’s statewide code structure, then applies its development code to the parcel and zone. High desert conditions favor careful water planning, on site wastewater design, and wind exposure details for small footprints. Large tracts and sparse utilities mean sanitation, legal access, and emergency response times get close attention in rural reviews. A foundation built tiny home follows the Oregon Residential Specialty Code with Appendix Q. A tiny house on wheels is usually treated like an RV, so long term residential use depends on zoning and confirmed utility hookups. Practical path: identify the governing jurisdiction, confirm whether the zone allows ADUs or small dwellings, map utilities, then prepare a permit ready plan set.

Minimum sq ft
Appendix Q supports very small habitable rooms; confirm any local minimum floor area in the zone.
Foundation
Permanent small homes are reviewed as dwellings under the Oregon Residential Specialty Code and inspected by the local building department.
THOW
Movable tiny houses are typically classed like RVs. Long term living requires zoning allowance and approved water, sewer, and power.
OregonGray

Lane County

Lane County, Oregon

Lane County reviews tiny house proposals within Oregon’s statewide code structure, then applies its development code to the parcel and zone. University demand can push interest in compact units for intergenerational housing and rental flexibility, so ADU provisions matter. Forest resource zones bring slope stability, road standards, and vegetation management into the siting conversation for safety and erosion control. A foundation built tiny home follows the Oregon Residential Specialty Code with Appendix Q. A tiny house on wheels is usually treated like an RV, so long term residential use depends on zoning and confirmed utility hookups. Practical path: identify the governing jurisdiction, confirm whether the zone allows ADUs or small dwellings, map utilities, then prepare a permit ready plan set.

Minimum sq ft
Appendix Q supports very small habitable rooms; confirm any local minimum floor area in the zone.
Foundation
Permanent small homes are reviewed as dwellings under the Oregon Residential Specialty Code and inspected by the local building department.
THOW
Movable tiny houses are typically classed like RVs. Long term living requires zoning allowance and approved water, sewer, and power.
OregonGray

Lincoln County

Lincoln County, Oregon

In Lincoln County, tiny house feasibility begins with who regulates the land and what the local code allows on that specific lot. Coastal siting adds seawater corrosion, flood elevations, and tsunami evacuation routes to the early checklist, and some shorelines carry extra overlays. Forest resource zones bring slope stability, road standards, and vegetation management into the siting conversation for safety and erosion control. A foundation built tiny home follows the Oregon Residential Specialty Code with Appendix Q. A tiny house on wheels is usually treated like an RV, so long term residential use depends on zoning and confirmed utility hookups. Practical path: identify the governing jurisdiction, confirm whether the zone allows ADUs or small dwellings, map utilities, then prepare a permit ready plan set.

Minimum sq ft
Appendix Q supports very small habitable rooms; confirm any local minimum floor area in the zone.
Foundation
Permanent small homes are reviewed as dwellings under the Oregon Residential Specialty Code and inspected by the local building department.
THOW
Movable tiny houses are typically classed like RVs. Long term living requires zoning allowance and approved water, sewer, and power.
OregonGray

Linn County

Linn County, Oregon

Linn County reviews tiny house proposals within Oregon’s statewide code structure, then applies its development code to the parcel and zone. Agricultural and vineyard districts include Exclusive Farm Use and related overlays that restrict non farm dwellings and intensities of use. A foundation built tiny home follows the Oregon Residential Specialty Code with Appendix Q. A tiny house on wheels is usually treated like an RV, so long term residential use depends on zoning and confirmed utility hookups. Practical path: identify the governing jurisdiction, confirm whether the zone allows ADUs or small dwellings, map utilities, then prepare a permit ready plan set. Applicants should verify floodplain, wildfire, and driveway standards early to avoid redesign later.

Minimum sq ft
Appendix Q supports very small habitable rooms; confirm any local minimum floor area in the zone.
Foundation
Permanent small homes are reviewed as dwellings under the Oregon Residential Specialty Code and inspected by the local building department.
THOW
Movable tiny houses are typically classed like RVs. Long term living requires zoning allowance and approved water, sewer, and power.
OregonGray

Malheur County

Malheur County, Oregon

In Malheur County, tiny house feasibility begins with who regulates the land and what the local code allows on that specific lot. High desert conditions favor careful water planning, on site wastewater design, and wind exposure details for small footprints. Large tracts and sparse utilities mean sanitation, legal access, and emergency response times get close attention in rural reviews. A foundation built tiny home follows the Oregon Residential Specialty Code with Appendix Q. A tiny house on wheels is usually treated like an RV, so long term residential use depends on zoning and confirmed utility hookups. Practical path: identify the governing jurisdiction, confirm whether the zone allows ADUs or small dwellings, map utilities, then prepare a permit ready plan set.

Minimum sq ft
Appendix Q supports very small habitable rooms; confirm any local minimum floor area in the zone.
Foundation
Permanent small homes are reviewed as dwellings under the Oregon Residential Specialty Code and inspected by the local building department.
THOW
Movable tiny houses are typically classed like RVs. Long term living requires zoning allowance and approved water, sewer, and power.
OregonGray

Marion County

Marion County, Oregon

Marion County handles small dwellings through standard planning and building procedures that tie back to Oregon’s adopted residential code. Agricultural and vineyard districts include Exclusive Farm Use and related overlays that restrict non farm dwellings and intensities of use. A foundation built tiny home follows the Oregon Residential Specialty Code with Appendix Q. A tiny house on wheels is usually treated like an RV, so long term residential use depends on zoning and confirmed utility hookups. Practical path: identify the governing jurisdiction, confirm whether the zone allows ADUs or small dwellings, map utilities, then prepare a permit ready plan set. Applicants should verify floodplain, wildfire, and driveway standards early to avoid redesign later.

Minimum sq ft
Appendix Q supports very small habitable rooms; confirm any local minimum floor area in the zone.
Foundation
Permanent small homes are reviewed as dwellings under the Oregon Residential Specialty Code and inspected by the local building department.
THOW
Movable tiny houses are typically classed like RVs. Long term living requires zoning allowance and approved water, sewer, and power.
OregonGray

Morrow County

Morrow County, Oregon

In Morrow County, tiny house feasibility begins with who regulates the land and what the local code allows on that specific lot. Agricultural and vineyard districts include Exclusive Farm Use and related overlays that restrict non farm dwellings and intensities of use. A foundation built tiny home follows the Oregon Residential Specialty Code with Appendix Q. A tiny house on wheels is usually treated like an RV, so long term residential use depends on zoning and confirmed utility hookups. Practical path: identify the governing jurisdiction, confirm whether the zone allows ADUs or small dwellings, map utilities, then prepare a permit ready plan set. Applicants should verify floodplain, wildfire, and driveway standards early to avoid redesign later.

Minimum sq ft
Appendix Q supports very small habitable rooms; confirm any local minimum floor area in the zone.
Foundation
Permanent small homes are reviewed as dwellings under the Oregon Residential Specialty Code and inspected by the local building department.
THOW
Movable tiny houses are typically classed like RVs. Long term living requires zoning allowance and approved water, sewer, and power.
OregonGray

Multnomah County

Multnomah County, Oregon

Multnomah County reviews tiny house proposals within Oregon’s statewide code structure, then applies its development code to the parcel and zone. Metro growth areas often rely on ADU friendly infill tools; utilities are usually available, so the key variables are setbacks, height, and parking. A foundation built tiny home follows the Oregon Residential Specialty Code with Appendix Q. A tiny house on wheels is usually treated like an RV, so long term residential use depends on zoning and confirmed utility hookups. Practical path: identify the governing jurisdiction, confirm whether the zone allows ADUs or small dwellings, map utilities, then prepare a permit ready plan set. Applicants should verify floodplain, wildfire, and driveway standards early to avoid redesign later.

Minimum sq ft
Appendix Q supports very small habitable rooms; confirm any local minimum floor area in the zone.
Foundation
Permanent small homes are reviewed as dwellings under the Oregon Residential Specialty Code and inspected by the local building department.
THOW
Movable tiny houses are typically classed like RVs. Long term living requires zoning allowance and approved water, sewer, and power.
OregonGray

Polk County

Polk County, Oregon

Polk County reviews tiny house proposals within Oregon’s statewide code structure, then applies its development code to the parcel and zone. Agricultural and vineyard districts include Exclusive Farm Use and related overlays that restrict non farm dwellings and intensities of use. A foundation built tiny home follows the Oregon Residential Specialty Code with Appendix Q. A tiny house on wheels is usually treated like an RV, so long term residential use depends on zoning and confirmed utility hookups. Practical path: identify the governing jurisdiction, confirm whether the zone allows ADUs or small dwellings, map utilities, then prepare a permit ready plan set. Applicants should verify floodplain, wildfire, and driveway standards early to avoid redesign later.

Minimum sq ft
Appendix Q supports very small habitable rooms; confirm any local minimum floor area in the zone.
Foundation
Permanent small homes are reviewed as dwellings under the Oregon Residential Specialty Code and inspected by the local building department.
THOW
Movable tiny houses are typically classed like RVs. Long term living requires zoning allowance and approved water, sewer, and power.
OregonGray

Sherman County

Sherman County, Oregon

Sherman County reviews tiny house proposals within Oregon’s statewide code structure, then applies its development code to the parcel and zone. Large tracts and sparse utilities mean sanitation, legal access, and emergency response times get close attention in rural reviews. Parcels within the Columbia River Gorge National Scenic Area trigger special review layers that sit on top of county requirements. A foundation built tiny home follows the Oregon Residential Specialty Code with Appendix Q. A tiny house on wheels is usually treated like an RV, so long term residential use depends on zoning and confirmed utility hookups. Practical path: identify the governing jurisdiction, confirm whether the zone allows ADUs or small dwellings, map utilities, then prepare a permit ready plan set.

Minimum sq ft
Appendix Q supports very small habitable rooms; confirm any local minimum floor area in the zone.
Foundation
Permanent small homes are reviewed as dwellings under the Oregon Residential Specialty Code and inspected by the local building department.
THOW
Movable tiny houses are typically classed like RVs. Long term living requires zoning allowance and approved water, sewer, and power.
OregonGray

Tillamook County

Tillamook County, Oregon

Tillamook County handles small dwellings through standard planning and building procedures that tie back to Oregon’s adopted residential code. Coastal siting adds seawater corrosion, flood elevations, and tsunami evacuation routes to the early checklist, and some shorelines carry extra overlays. Forest resource zones bring slope stability, road standards, and vegetation management into the siting conversation for safety and erosion control. A foundation built tiny home follows the Oregon Residential Specialty Code with Appendix Q. A tiny house on wheels is usually treated like an RV, so long term residential use depends on zoning and confirmed utility hookups. Practical path: identify the governing jurisdiction, confirm whether the zone allows ADUs or small dwellings, map utilities, then prepare a permit ready plan set.

Minimum sq ft
Appendix Q supports very small habitable rooms; confirm any local minimum floor area in the zone.
Foundation
Permanent small homes are reviewed as dwellings under the Oregon Residential Specialty Code and inspected by the local building department.
THOW
Movable tiny houses are typically classed like RVs. Long term living requires zoning allowance and approved water, sewer, and power.
OregonGray

Umatilla County

Umatilla County, Oregon

Umatilla County reviews tiny house proposals within Oregon’s statewide code structure, then applies its development code to the parcel and zone. Agricultural and vineyard districts include Exclusive Farm Use and related overlays that restrict non farm dwellings and intensities of use. A foundation built tiny home follows the Oregon Residential Specialty Code with Appendix Q. A tiny house on wheels is usually treated like an RV, so long term residential use depends on zoning and confirmed utility hookups. Practical path: identify the governing jurisdiction, confirm whether the zone allows ADUs or small dwellings, map utilities, then prepare a permit ready plan set. Applicants should verify floodplain, wildfire, and driveway standards early to avoid redesign later.

Minimum sq ft
Appendix Q supports very small habitable rooms; confirm any local minimum floor area in the zone.
Foundation
Permanent small homes are reviewed as dwellings under the Oregon Residential Specialty Code and inspected by the local building department.
THOW
Movable tiny houses are typically classed like RVs. Long term living requires zoning allowance and approved water, sewer, and power.
OregonGray

Union County

Union County, Oregon

In Union County, tiny house feasibility begins with who regulates the land and what the local code allows on that specific lot. A foundation built tiny home follows the Oregon Residential Specialty Code with Appendix Q. A tiny house on wheels is usually treated like an RV, so long term residential use depends on zoning and confirmed utility hookups. Practical path: identify the governing jurisdiction, confirm whether the zone allows ADUs or small dwellings, map utilities, then prepare a permit ready plan set. Applicants should verify floodplain, wildfire, and driveway standards early to avoid redesign later.

Minimum sq ft
Appendix Q supports very small habitable rooms; confirm any local minimum floor area in the zone.
Foundation
Permanent small homes are reviewed as dwellings under the Oregon Residential Specialty Code and inspected by the local building department.
THOW
Movable tiny houses are typically classed like RVs. Long term living requires zoning allowance and approved water, sewer, and power.
OregonGray

Wallowa County

Wallowa County, Oregon

In Wallowa County, tiny house feasibility begins with who regulates the land and what the local code allows on that specific lot. Large tracts and sparse utilities mean sanitation, legal access, and emergency response times get close attention in rural reviews. A foundation built tiny home follows the Oregon Residential Specialty Code with Appendix Q. A tiny house on wheels is usually treated like an RV, so long term residential use depends on zoning and confirmed utility hookups. Practical path: identify the governing jurisdiction, confirm whether the zone allows ADUs or small dwellings, map utilities, then prepare a permit ready plan set. Applicants should verify floodplain, wildfire, and driveway standards early to avoid redesign later.

Minimum sq ft
Appendix Q supports very small habitable rooms; confirm any local minimum floor area in the zone.
Foundation
Permanent small homes are reviewed as dwellings under the Oregon Residential Specialty Code and inspected by the local building department.
THOW
Movable tiny houses are typically classed like RVs. Long term living requires zoning allowance and approved water, sewer, and power.
OregonGray

Wasco County

Wasco County, Oregon

In Wasco County, tiny house feasibility begins with who regulates the land and what the local code allows on that specific lot. Agricultural and vineyard districts include Exclusive Farm Use and related overlays that restrict non farm dwellings and intensities of use. Parcels within the Columbia River Gorge National Scenic Area trigger special review layers that sit on top of county requirements. A foundation built tiny home follows the Oregon Residential Specialty Code with Appendix Q. A tiny house on wheels is usually treated like an RV, so long term residential use depends on zoning and confirmed utility hookups. Practical path: identify the governing jurisdiction, confirm whether the zone allows ADUs or small dwellings, map utilities, then prepare a permit ready plan set.

Minimum sq ft
Appendix Q supports very small habitable rooms; confirm any local minimum floor area in the zone.
Foundation
Permanent small homes are reviewed as dwellings under the Oregon Residential Specialty Code and inspected by the local building department.
THOW
Movable tiny houses are typically classed like RVs. Long term living requires zoning allowance and approved water, sewer, and power.
OregonGray

Washington County

Washington County, Oregon

Washington County reviews tiny house proposals within Oregon’s statewide code structure, then applies its development code to the parcel and zone. Metro growth areas often rely on ADU friendly infill tools; utilities are usually available, so the key variables are setbacks, height, and parking. A foundation built tiny home follows the Oregon Residential Specialty Code with Appendix Q. A tiny house on wheels is usually treated like an RV, so long term residential use depends on zoning and confirmed utility hookups. Practical path: identify the governing jurisdiction, confirm whether the zone allows ADUs or small dwellings, map utilities, then prepare a permit ready plan set. Applicants should verify floodplain, wildfire, and driveway standards early to avoid redesign later.

Minimum sq ft
Appendix Q supports very small habitable rooms; confirm any local minimum floor area in the zone.
Foundation
Permanent small homes are reviewed as dwellings under the Oregon Residential Specialty Code and inspected by the local building department.
THOW
Movable tiny houses are typically classed like RVs. Long term living requires zoning allowance and approved water, sewer, and power.
OregonGray

Wheeler County

Wheeler County, Oregon

Wheeler County reviews tiny house proposals within Oregon’s statewide code structure, then applies its development code to the parcel and zone. Large tracts and sparse utilities mean sanitation, legal access, and emergency response times get close attention in rural reviews. A foundation built tiny home follows the Oregon Residential Specialty Code with Appendix Q. A tiny house on wheels is usually treated like an RV, so long term residential use depends on zoning and confirmed utility hookups. Practical path: identify the governing jurisdiction, confirm whether the zone allows ADUs or small dwellings, map utilities, then prepare a permit ready plan set. Applicants should verify floodplain, wildfire, and driveway standards early to avoid redesign later.

Minimum sq ft
Appendix Q supports very small habitable rooms; confirm any local minimum floor area in the zone.
Foundation
Permanent small homes are reviewed as dwellings under the Oregon Residential Specialty Code and inspected by the local building department.
THOW
Movable tiny houses are typically classed like RVs. Long term living requires zoning allowance and approved water, sewer, and power.
OregonGray

Yamhill County

Yamhill County, Oregon

In Yamhill County, tiny house feasibility begins with who regulates the land and what the local code allows on that specific lot. Agricultural and vineyard districts include Exclusive Farm Use and related overlays that restrict non farm dwellings and intensities of use. A foundation built tiny home follows the Oregon Residential Specialty Code with Appendix Q. A tiny house on wheels is usually treated like an RV, so long term residential use depends on zoning and confirmed utility hookups. Practical path: identify the governing jurisdiction, confirm whether the zone allows ADUs or small dwellings, map utilities, then prepare a permit ready plan set. Applicants should verify floodplain, wildfire, and driveway standards early to avoid redesign later.

Minimum sq ft
Appendix Q supports very small habitable rooms; confirm any local minimum floor area in the zone.
Foundation
Permanent small homes are reviewed as dwellings under the Oregon Residential Specialty Code and inspected by the local building department.
THOW
Movable tiny houses are typically classed like RVs. Long term living requires zoning allowance and approved water, sewer, and power.

Oregon Tiny House Zoning Resources & Planning Departments

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