Tiny home rules in Tualatin, OR β covering tiny houses on wheels (THOWs), park model RVs, and tiny home on foundation builds β determine where they are legal and how they get permitted.
Washington County allows foundation-built tiny homes as dwellings or ADUs under CDC 430-89 (ADU) and ORS 197.312(5). Tiny homes on wheels are regulated as RVs or park model homes and cannot be occupied as permanent dwellings on residential lots.
Oregon is a national leader on tiny homes. Tiny houses on permanent foundations under 400 sq ft are built to IRC Appendix Q (adopted as Appendix AQ in Oregon ORSC). They can serve as a primary dwelling, ADU, or detached unit. Washington County allows one ADU per single-family lot in urban unincorporated areas under CDC 430-89, implementing ORS 197.312(5) and HB 2001 (2019): no owner occupancy requirement, no off-street parking requirement. ADU size generally limited to 800 sq ft or 60% of primary dwelling. Tiny homes on wheels (THOW) are regulated as RVs under ORS 446.003 and cannot be occupied as a permanent dwelling on a residential lot except in licensed RV parks. Park model RVs (ANSI A119.5) face similar limits. Hillsboro, Beaverton, and Tigard all allow foundation ADUs under parallel HB 2001 ordinances.
Occupying a THOW as permanent residence: zoning violation, code compliance order. Unpermitted ADU construction: stop-work, retroactive permit, possible removal. Short-term rental use of ADU may trigger additional restrictions.
Tualatin, OR
Tualatin does not ban gas-powered leaf blowers. Under TMC 6-14-040, residential power equipment - including leaf blowers, lawn mowers, lawn edgers, hand tool...
Tualatin, OR
TMC 6-14-040 prohibits operating amplified sound equipment so that the sound is plainly audible within a noise-sensitive property or more than 150 feet away ...
Tualatin, OR
Construction work in Tualatin - excavation, demolition, alteration, or repair of a building - is allowed between 7:00 a.m. and 6:00 p.m. seven days a week wi...
Tualatin, OR
Under TMC 6-14-040, it is unlawful to keep or permit any animal that barks, cries, or whimpers on a frequent or continuous basis for 15 minutes or longer if ...
Tualatin, OR
Tualatin Municipal Code Chapter 6-14 governs noise. TMC 6-14-030 prohibits creating or permitting a noise disturbance, and TMC 6-14-040 sets a 10:00 p.m. to ...
Tualatin, OR
Tualatin treats a vehicle left on a public street more than 24 hours that appears disabled or abandoned as towable under ORS 819.100. TMC 6-13-040(13) bars v...
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