Shed permit rules in Tigard, OR β also referred to as storage shed, backyard shed, or accessory building regulations β set size limits, setbacks, and when a building permit is required.
Tigard treats sheds as detached residential accessory structures under the Tigard Community Development Code. Under CDC Chapter 18.290 (Small Form Residential), accessory structures may not be located in the required front-yard setback and must maintain at least a 5-foot setback from side, street side, and rear property lines. Accessory structures may not exceed 528 square feet on lots smaller than 2.5 acres and may not cause the lot to exceed the base-zone lot-coverage maximum.
Sheds in Tigard are governed by the Tigard Community Development Code Chapter 18.290 (Small Form Residential) and the underlying base-zone development standards in Chapter 18.110 (Residential Zones). Detached accessory structures, including sheds, may be located within required side, street side, or rear setbacks provided they are at least five feet from the side, street side, or rear property line. Accessory structures may not be located in the required front-yard setback. The maximum size of an accessory structure is 528 square feet on lots less than 2.5 acres and 1,000 square feet on lots 2.5 acres or larger, and accessory structures may not cause the lot to exceed the maximum lot coverage allowed in the base zone. Sheds must also meet the lot-coverage and impervious-surface standards in Table 18.290.1. A building permit is required when the shed exceeds the threshold set by the Oregon Residential Specialty Code adopted under ORS 455.020. The Tigard Building Division publishes a 'When You Need a Permit' guide that summarizes when a building permit is required for residential accessory buildings; very small sheds below the structural threshold of the Oregon Residential Specialty Code may not require a building permit, but they must still comply with the CDC Chapter 18.290 zoning standards (setback, location, and size). Sheds with electrical, plumbing, or mechanical components require the corresponding trade permits from the Tigard Building Division regardless of structural size.
Placing a shed in the required front-yard setback, closer than five feet to a side, street side, or rear property line, or exceeding the 528-square-foot accessory-structure size cap, is a violation of CDC Chapter 18.290 and enforceable by Tigard Code Compliance. Constructing a shed without required building, electrical, plumbing, or mechanical permits is enforceable by the Tigard Building Division through stop-work orders, after-the-fact permitting, and civil penalties.
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