Multnomah County

Home permits and project costs in Portland, OR

Persistent winter rain drives roofing, gutter and moisture-intrusion work, and permit review is among the slower large-metro processes.

Verified August 2026

Local cost index

+18%

vs national average

Permit fee index

+28%

vs national baseline

Population

635,749

Homeownership

53%

Do you need a permit in Portland?

For most structural work, yes

Portland enforces oregon residential specialty code, based on the irc through Multnomah County. Roofing, electrical, plumbing, structural, pools and most exterior additions require a permit and inspection. Cosmetic work — paint, flooring, cabinet swaps — generally does not.

Project costs in Portland

National baselines adjusted by the local labor and materials index.

Project	Typical cost	Permit	Deep pages
Roof Replacement	$12,300 – $41,500	required	Cost·Permit
AC Replacement	$6,400 – $19,100	required	Cost·Permit
Fence Installation	$2,900 – $13,500	usually required	Cost·Permit
Water Heater Replacement	$1,500 – $6,800	required	Cost·Permit
Pool Installation	$48,300 – $146,200	required	Cost·Permit
Window Replacement	$9,500 – $43,000	required	Cost·Permit
Electrical Panel Replacement	$2,400 – $8,600	required	Cost·Permit
Generator Installation	$8,200 – $27,700	required	Cost·Permit
Solar Panel Installation	$18,300 – $58,600	required	Cost·Permit
Kitchen Remodel	$21,400 – $109,500	conditional	Cost·Permit
Bathroom Remodel	$10,800 – $50,300	conditional	Cost·Permit
Driveway Replacement	$5,200 – $23,400	usually required	Cost·Permit
Paver Patio & Walkway	$4,200 – $19,300	conditional	Cost·Permit
Deck Construction	$6,900 – $35,100	required	Cost·Permit
Shed Installation	$2,200 – $14,500	conditional	Cost·Permit
Whole-House Repipe	$5,700 – $20,300	required	Cost·Permit
EV Charger Installation	$1,000 – $5,300	required	Cost·Permit
Hurricane Shutter Installation	$4,100 – $23,300	required	Cost·Permit
Pool Enclosure / Screen Cage	$11,600 – $53,900	required	Cost·Permit
Septic System Replacement	$9,600 – $35,800	required	Cost·Permit
Impact Window Installation	$11,500 – $53,800	required	Cost·Permit
Exterior Door Replacement	$1,100 – $8,200	usually required	Cost·Permit
Garage Door Replacement	$1,800 – $9,600	required	Cost·Permit
Siding Installation	$10,000 – $47,700	usually required	Cost·Permit
Stucco Repair	$1,100 – $19,200	conditional	Cost·Permit
Soffit & Fascia Replacement	$2,300 – $13,800	conditional	Cost·Permit
Gutter Installation	$1,100 – $7,700	rarely required	Cost·Permit
Roof Repair	$500 – $6,100	conditional	Cost·Permit
Flat Roof Replacement	$7,800 – $36,200	required	Cost·Permit
Attic Insulation	$1,400 – $8,700	rarely required	Cost·Permit
Ductwork Replacement	$3,100 – $14,800	required	Cost·Permit
Mini Split Installation	$3,000 – $15,400	required	Cost·Permit
Flooring Installation	$2,900 – $23,600	rarely required	Cost·Permit
Tile Installation	$2,100 – $19,100	rarely required	Cost·Permit
Interior Painting	$1,800 – $11,500	rarely required	Cost·Permit
Exterior Painting	$3,400 – $18,100	rarely required	Cost·Permit
Drywall Repair	$400 – $5,400	rarely required	Cost·Permit
Kitchen Cabinet Refacing	$5,400 – $23,800	rarely required	Cost·Permit
Countertop Replacement	$2,500 – $13,900	rarely required	Cost·Permit
Tub to Shower Conversion	$4,300 – $19,800	usually required	Cost·Permit
Sod Installation	$1,100 – $8,200	rarely required	Cost·Permit
Irrigation System Installation	$2,700 – $12,100	conditional	Cost·Permit
Tree Removal	$600 – $6,800	conditional	Cost·Permit
Outdoor Kitchen	$7,400 – $55,500	usually required	Cost·Permit
Seawall Repair	$10,400 – $123,400	required	Cost·Permit
Dock Construction	$11,700 – $110,400	required	Cost·Permit
Well Installation	$7,000 – $31,900	required	Cost·Permit
Mold Remediation	$1,900 – $18,600	conditional	Cost·Permit
Water Softener Installation	$1,500 – $8,000	usually required	Cost·Permit
Home Addition	$58,100 – $361,800	required	Cost·Permit

Portland permitting basics

Jurisdiction	Portland, Multnomah County
Building department	Official site
Permit portal	Apply online
Owner-builder permits	Homeowner permits allowed on owner-occupied property
Contractor verification	Verify any license with Oregon Building Codes Division before signing

Sources

Sources & verification

Last verified August 2026. Cost figures are modeled estimates based on national baselines adjusted for local labor and material pricing — they are not quotes. Permit rules change; confirm with the building department before starting work.