Portland Home Addition Permits 2026

Portland home addition permit fees, plan review, and required inspections for 2026.

Portland Home Addition permit basics

  • Building department: City of Portland Bureau of Development Services (BDS)
  • Department URL: https://www.portland.gov/bds
  • Permit fee typical: $400 - $3,500 permit fee
  • Plan review + approval: 7-20 business days
  • Inspections required: 6-12 inspections (footing, framing, electrical, plumbing, mechanical, insulation, drywall, final)

Portland Home Addition common issues

Setback compliance, FAR (floor-area ratio), structural review required, sewer/water capacity may need upgrade.

Portland-specific permitting context

Portland BDS has strict energy code (Reach Code option). Stormwater management requirements. CCB license required for all contractor work in Oregon.

Climate factors: Mild wet winters; rare snow; moss/moisture issues on roofs; minimal AC historically

Oregon licensing for Home Addition contractors

Oregon Construction Contractors Board (CCB) - required: $325 + $20K bond + liability insurance. Board: https://www.oregon.gov/ccb.

Mechanics lien deadline in Oregon: 75 days from last work (90 days for owner-occupied residential). Preliminary notice: Notice of right to lien required within 8 days of first furnishing for owner-occupied residential.

Portland Home Addition sales tax

Oregon sales tax: No state sales tax (CAT 0.57% on commercial activity over $1M). No sales tax. Corporate Activity Tax (CAT) at 0.57% on commercial activity over $1M annual.

Verify with the Oregon Department of Revenue.

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Related Portland resources