Washington County building permits

Address

155 N First Avenue, Suite 350 (3rd floor), Hillsboro, Oregon 97124

Phone

503-846-3470

Hours

Lobby: 8 a.m.-4 p.m. Monday-Thursday; closed for in-person services Friday (phone and appointments only)

Online portal

www.washingtoncountyor.gov/lut/building-services/building-an

Jurisdiction

County · Portland metro

Researched October 13, 2026 from the office's official website. Offices change hours and fees; confirm before you visit. See an error? Report it.

Permit types issued

• Demolition Permit
• Electrical Permit
• Grading Permit
• Mechanical Permit (HVAC)
• Plumbing Permit
• Re-roof (Building Re-Roof)
• Residential Building Permit

Fees, review times and which of these your project needs are in the Deep Permit Report.