OR Building Standards2026 Residential Code

Oregon Building Permit Costs, Exemptions & City Portals

Understand residential construction permit requirements in Oregon under Oregon Residential Specialty Code (ORSC 2021/2026 Update). Calculate permit fee estimates for Portland and surrounding counties, check shed and fence exemptions, and review mandatory inspection procedures.

Oregon Statutory Ruling: Residential Permitting Standards & Exemptions

Oregon Building Permit Standard: Under Oregon Residential Specialty Code (ORSC 2021/2026 Update), residential building permits are mandated for Accessory Dwelling Units (ADU), Seismic strap retrofits, Wood stove installations. Detached accessory storage sheds up to 200 sq ft and fences up to 7 ft are permit-exempt. Base municipal fees start at $95 plus plan check review fees.

Governing Code: Oregon Residential Specialty Code (ORSC 2021/2026 Update)Metro Jurisdiction: City of Portland Bureau of Development Services (BDS)Last Verified: October 2026

Building Permit Cost & Requirement Estimator

Estimate municipal building permit fees, plan check review costs, and inspection requirements by project valuation.

Valuation includes labor and materials as required by municipal fee formulas.
Expected Permit Subcodes:
BuildingElectricalPlumbing

Estimated Municipal Permit Fees (Portland, OR)

Building Construction Permit:$482
Plan Check Review Fee (65%):$313
Subtrade Surcharges (Elec/Plumb/Mech):$150
Total Estimated Permit Cost:$803 – $1,087
⏱ Typical Plan Review Turnaround: 10–20 business days
Local Jurisdiction Department:
City of Portland Bureau of Development Services (BDS)
Open Official City Permit Portal →
State Building Standards Code: Oregon Residential Specialty Code (ORSC 2021/2026 Update). Detached one-story accessory tool sheds are permit-exempt up to 200 sq ft. Fences up to 7 feet tall are exempt from building permits.

Planning Construction Budgets in Portland?

Compare full contractor labor and material cost benchmarks across kitchen, bathroom, ADU, and roof replacements.

Explore Metro Cost Guides →

Oregon Building Code Exemption Guidelines

Detached Shed Exemption Cap
Up to 200 sq ft
One-story tool/storage shed without electrical or plumbing
Fence Height Exemption Cap
Up to 7 Feet Tall
Standard residential boundary privacy fences

Projects Strictly Requiring Building Permits in Oregon

  • Accessory Dwelling Units (ADU)
  • Seismic strap retrofits
  • Wood stove installations
  • Structural framing alterations

Permit-Exempt Cosmetic Improvements in Oregon

  • Detached single-story storage sheds under 200 sq ft (and under 10 ft wall height)
  • Fences not over 7 feet tall
  • Cosmetic painting and interior cabinet replacement in place

Penalties for Unpermitted Work in Oregon

Portland BDS assesses an investigation fee equal to the standard permit fee (double fees) plus required code compliance certification.

Major Municipal Building Department (Portland)

For properties located in or around Portland, residential permits are processed through the City of Portland Bureau of Development Services (BDS). Standard residential plan check reviews typically take 10–20 business days.

Access Portland Online Permitting Portal →

Oregon Building Permit FAQs

What is Oregon's permit exemption for small backyard sheds?

Under the Oregon Residential Specialty Code, one-story detached accessory structures up to 200 square feet with wall heights under 10 feet are exempt from building permits.

Do ADUs require separate permits in Oregon?

Yes. Oregon has favorable ADU zoning laws, but full building, electrical, plumbing, and mechanical permits are required to ensure habitability and energy standards.

Compliance Notice: Building codes are adopted locally and may vary between incorporated cities and unincorporated county districts in Oregon. Always verify specific setback and permitting requirements with your local jurisdiction before commencing construction.