Salem tiny home zoning, ADU rules, THOW parking, and builder costs for Marion County, Oregon.
Last researched May 2026
Salem is Oregon's capital, offering a lower cost of living than Portland with Willamette Valley agriculture, proximity to the coast, and a mild wet climate. Tiny home buyers benefit from available land in outlying Marion and Polk counties where rural rules are often more permissive.
Salem follows Oregon's statewide ADU baseline under ORS 197A.425 and implements HB 2001 middle-housing rules via the Salem Revised Code. ADUs are permitted on detached single-family lots, and duplexes are allowed in most residential zones. THOW placement is not explicitly legalized as a primary dwelling; RV-classified tiny homes must be accessory to a primary residence. Always confirm specifics with Salem Planning before siting.
Verify current requirements with your local planning department.
ADUs are permitted statewide under ORS 197A.425, which Salem follows. As of May 2026, Salem treats ADUs as a special use under Section 3.2.8 of its zoning code: no land-use application is required as long as the ADU meets the special-use standards, though a building permit is. Detached ADUs are capped at 800 sq ft; attached ADUs are limited to 50% of the primary dwelling or 800 sq ft (whichever is less). Internal ADUs have no size cap. Salem City Council has waived System Development Charges for ADUs and offers free ready-to-build plans, materially reducing upfront cost. Off-street parking is not required.
Communities, RV parks, and parking options in and near Salem.
Salem treats tiny houses on wheels as recreational vehicles. They can be parked on residential lots only as accessory to a primary dwelling, with utility hookups and compliance with parking and setback standards. The city has no Portland-style explicit occupied-RV allowance, so confirm with the Community Development Department before placing.
rv-park
4751 Astoria St NE, Salem, OR 97305
139-site Good Sam top-rated RV resort built in 2006 with 30/50 amp service, indoor jacuzzi, seasonal pool, fitness room, and laundry; hosts both short-term and long-term seasonal residents.
rv-park
4130 Silverton Rd NE, Salem, OR 97305
107-site full-hookup RV park (30/50 amp, water, sewer, cable on every site) that switched in March 2024 to a minimum-monthly-stay policy with no overnight stays — essentially a long-term residential RV community.
rv-park
4490 Silverton Rd NE, Salem, OR 97305
Long-term-focused RV park with full hookups (water, sewer, electric), monthly social activities, and rates that include water, sewer, garbage, basic cable, and community Wi-Fi.
Buckley, Washington
Buckley-based builder and one of Washington's first to embrace L&I factory inspection. Builds ANSI 119.5 certified THOWs, park models, and modular tiny homes. CEO Todd McKellips also serves as executive director of the Washington Tiny House Association.
Service areas: Washington, Oregon, California
Portland, Oregon
Portland-based luxury tiny home builder featured on national television. Family-owned company offering fully custom THOWs, park models, ADUs, and commercial builds. Signature Series starts at $129,900. Builds designed for Oregon's climate with moisture resistance and thermal insulation.
Service areas: Oregon, Washington, California
Eugene, Oregon
Eugene-based luxury tiny home builder with over 300 handcrafted homes delivered. Family-owned company with PHIUS and LEED backgrounds emphasizing sustainable building practices. Offers both signature models and fully custom builds with financing starting at $697/month.
Service areas: Oregon, Washington, California
Battle Ground, washington
Battle Ground factory builder producing modular tiny homes, ADUs, and single-family homes. Over 500 homes placed in five years. New 21,000 sq ft factory doubles production capacity to two homes per week.
Service areas: washington, oregon, california, montana, idaho
Damascus, Oregon
Oregon-based pre-engineered building kit manufacturer offering prefab cabin kits (including the 495 sq ft Mazama model) and backyard ADU kits shipped nationwide. Founded in 2002 alongside sister company DC Builders; maintains Delaware-specific design and pricing resources for cabin and ADU projects.
Service areas: Delaware, Maryland, Virginia, Pennsylvania, New Jersey, New York, Oregon
Portland, Oregon
Portland-based prefab ADU specialist offering turnkey modular accessory dwelling units with fixed pricing. Handles all aspects from site planning and permitting to utilities, installation, and landscaping. Rent-ready units delivered in under five months.
Service areas: Oregon
A comparison between tiny-home living and conventional homeownership in Salem.
Tiny home path
Traditional home path
Potential monthly savings
Not as a standalone primary dwelling on a residential lot. THOWs are treated as RVs and must be accessory to a permanent primary residence.
Yes. Salem follows ORS 197A.425 and allows detached or attached ADUs up to 800 sq ft on most single-family lots.
Yes, land costs and builder rates are generally lower, and parking options in the surrounding counties are more varied.
Unincorporated Marion and Polk counties often allow more flexibility for RV-classified tiny homes on larger acreage, subject to septic and setback rules.
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