Shed permit rules in Beaverton, OR — also referred to as storage shed, backyard shed, or accessory building regulations — set size limits, setbacks, and when a building permit is required.
Sheds and detached accessory structures in Beaverton are regulated by the Beaverton Development Code Chapter 60 (Section 60.50, Residential Accessory Structures) and the Oregon Residential Specialty Code adopted under BC Chapter 8.02. One-story detached accessory structures of 200 square feet or less are generally exempt from a building permit under the Oregon Residential Specialty Code, but they must still comply with the setbacks of the underlying residential zone (BDC Chapter 20). Sheds cannot be used as habitable dwelling units unless converted into an ADU with full permitting.
Beaverton applies the statewide Oregon Residential Specialty Code (ORSC) under Beaverton Code Chapter 8.02 (Building Code), so single-story detached accessory structures not exceeding 200 square feet of building area generally do not require a building permit, mirroring the ORSC exemption. Zoning compliance is still required: under BDC Section 60.50, residential accessory structures must meet the side and rear yard setbacks of the underlying residential zone established in BDC Chapter 20, and structures may not be located within easements. Lot coverage maximums set by the underlying zone (typically 40 to 50 percent for low-density residential districts) include the shed footprint. Larger sheds, sheds with plumbing or electrical service, and any structure intended for sleeping or habitation trigger full building, mechanical, plumbing, and electrical permits through the Beaverton Building Division. Converting a shed into an ADU requires compliance with BDC Section 60.50 ADU standards and ORS 197.312, including the separate-entrance requirement and the 800 square foot detached cap. Sheds in mapped floodplains, Significant Natural Resource Areas, or design overlay districts may require additional review under BDC Chapter 60.
Installing a shed in violation of zoning setbacks or lot coverage, or constructing a permit-required shed without permits, may trigger code-compliance enforcement under the Beaverton Development Code. Remedies include after-the-fact permitting, relocation, or removal, plus civil penalties. Habitable use of a non-permitted shed is treated as an unlawful dwelling unit.
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