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Washington County, OR Accessory Structures: Carport Rules (2026)

Some Restrictions

Verified 1 month ago|Source: Washington County Community Development Code (CDC 418, 413) →

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Key Facts

Exempt Size: Under 200 sq ft
Setback: CDC 418
Wind/Snow: 95 mph / 25 psf
HOA: CC&Rs may restrict

City-specific rules exist: Hillsboro, Tigard, Tualatin, and Beaverton have their own carport rules rules that differ from Washington County's county-level regulations. If you live in one of those cities, check the city-specific page instead.

Summary

Washington County requires a building permit for carports. Carports must meet CDC 418 setbacks and CDC 413 parking/driveway rules. Detached accessory structures under 200 sq ft and 15 ft tall are exempt from building permits but not from zoning.

Full Breakdown

Carports are accessory structures regulated under Washington County CDC 430 (Special Use Standards) and CDC 418 (Setbacks). Attached carports follow primary dwelling setbacks (typical R-5: 15-foot front, 5-foot side, 10-foot rear). Detached carports under 200 sq ft and 15 feet tall are exempt from building permits under the Oregon Residential Specialty Code R105.2, but must still comply with setbacks and lot coverage. Larger carports require a building permit including plans showing foundation, roof framing, wind and snow loads (25 psf ground snow, Exposure B, 95 mph wind). Prefabricated metal carport kits do not escape permitting. HOAs often have CC&Rs limiting carport location or prohibiting detached carports entirely. Front-yard carports are generally disfavored in R-5/R-6 zones.

Violations & Fines

Unpermitted carport over 200 sq ft: stop-work order, retroactive permit with investigation fee, potential removal. Setback violations: correction order, possible demolition. HOA fines: per CC&Rs.

Frequently Asked Questions

Who enforces carport rules rules in Washington County?

Washington County's code enforcement division is responsible for accessory structures ordinances. You can report violations or request information through the Washington County government website or by calling the main municipal line.

What are typical penalties for violating carport rules rules?

Most Washington County accessory structures violations start with a written warning followed by escalating civil fines for repeat offenses. Specific dollar amounts and any criminal-misdemeanor exposure depend on the section of code; consult Washington County's municipal code or staff for the current penalty schedule.

How does Washington County compare?

See how Washington County's carport rules rules stack up against other locations.

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Washington County, OR Accessory Structures: Carport Rules (2026)

Key Facts

Summary

Full Breakdown

Violations & Fines

Frequently Asked Questions

Sources & Official References

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