Hillsboro treats a carport as an accessory structure under Community Development Code Section 12.40.104. In residential zones, side and rear setbacks may be reduced to three feet for an accessory structure meeting Subsection 12.40.104.B. Setbacks are measured to the support posts closest to the driveway, or to the roof edge.
Hillsboro CDC Section 12.40.104 governs accessory structures and equipment on residentially zoned lots, including detached carports, sheds, detached garages, and greenhouses. Side and rear setbacks may be reduced to three feet provided the structure complies with Subsection 12.40.104.B, which includes separation between any accessory structure and the property line to limit fire spread between lots. CDC 12.50.130 adds that a carport setback is measured to the support posts closest to the driveway, or to the edge of the carport roof when no posts are present. An attached carport is part of the principal dwelling and must meet the underlying zone's front, side, and rear setbacks. Building permits follow the Oregon Residential Specialty Code adopted under ORS 455.020.
Constructing a carport without a Hillsboro building permit, placing one within three feet of a lot line, or missing principal-structure setbacks for an attached carport violates CDC 12.40.104 and 12.50.130. Code Compliance may issue stop-work orders under HMC 4.04.
Hillsboro, OR
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