Tiny home rules in Marion County, OR — covering tiny houses on wheels (THOWs), park model RVs, and tiny home on foundation builds — determine where they are legal and how they get permitted.
Marion County has no tiny-home-specific ordinance. A permanent tiny house on a foundation is regulated as a dwelling or accessory dwelling unit under state law and county zoning; a tiny house on wheels is generally treated as a recreational vehicle.
There is no dedicated tiny-home ordinance in Marion County. How a tiny house is regulated depends on its form. A site-built tiny home on a permanent foundation is a dwelling, and where it accompanies an existing home it qualifies as an accessory dwelling unit, which ORS 197.312 defines as an interior, attached, or detached residential structure accessory to a single-family dwelling. It must meet Oregon's one- and two-family dwelling code and the county Rural Zoning Code accessory-structure and setback standards. A tiny house on wheels is usually classified as a recreational vehicle or park model, and Oregon and the county generally restrict long-term residential occupancy of an RV on a lot outside a licensed park or an approved emergency shelter
Occupying a tiny house on wheels as a permanent residence where not allowed, or placing a foundation tiny home without permits, is a code violation enforced by the county or city, with orders to cease occupancy, obtain permits, or remove.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
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Marion County has no ordinance banning backyard composting, and no permit is needed for a home compost pile. It must not become a nuisance, attract rodents o...
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Marion County has no ordinance banning or specifically regulating residential artificial turf. Installation on private property is generally allowed. Check d...
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Marion County does not require any particular plants and does not ban native or xeric landscaping. Ornamental landscape grasses that are not a fire or traffi...
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Oregon law lets you collect rain and snowmelt from a rooftop or other artificial impervious surface without a water right. Marion County has no ordinance ban...
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Marion County itself sets no residential watering schedule. In Salem, the Public Works Director may curtail water use whenever a supply shortage or emergency...
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All of Marion County outside city limits is a weed control district. Landowners must destroy designated noxious weeds and stop them from seeding. Inside the ...
See how Marion County's tiny homes rules stack up against other locations.
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