Multnomah County

Home permits and project costs in Gresham, OR

Gresham sits in Multnomah County, Oregon. Persistent rainfall and moisture management dominate exterior detailing, while seismic provisions apply to structural and foundation work. Work outside city limits is permitted by the county building department rather than the city.

Model reviewed August 2026

Local cost index

+14%

vs national average

Permit fee index

+15%

vs national baseline

Population

113,264

Homeownership

Do you need a permit in Gresham?

For most structural work, yes

Gresham 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 Gresham

National baselines adjusted by the local labor and materials index.

Project	Typical cost	Permit	Deep pages
Roof Replacement	$11,700 – $39,600	required	Cost·Permit
AC Replacement	$6,200 – $18,400	required	Cost·Permit
Fence Installation	$2,800 – $13,000	usually required	Cost·Permit
Water Heater Replacement	$1,400 – $6,500	required	Cost·Permit
Pool Installation	$46,100 – $139,600	required	Cost·Permit
Window Replacement	$9,100 – $41,200	required	Cost·Permit
Electrical Panel Replacement	$2,300 – $8,200	required	Cost·Permit
Generator Installation	$7,800 – $26,500	required	Cost·Permit
Solar Panel Installation	$17,700 – $56,500	required	Cost·Permit
Kitchen Remodel	$20,800 – $106,100	conditional	Cost·Permit
Bathroom Remodel	$10,400 – $48,600	conditional	Cost·Permit
Driveway Replacement	$5,000 – $22,500	usually required	Cost·Permit
Paver Patio & Walkway	$4,100 – $18,600	conditional	Cost·Permit
Deck Construction	$6,600 – $33,600	required	Cost·Permit
Shed Installation	$2,100 – $14,000	conditional	Cost·Permit
Whole-House Repipe	$5,400 – $19,400	required	Cost·Permit
EV Charger Installation	$1,000 – $5,000	required	Cost·Permit
Hurricane Shutter Installation	$3,900 – $22,200	required	Cost·Permit
Pool Enclosure / Screen Cage	$11,000 – $51,400	required	Cost·Permit
Septic System Replacement	$9,200 – $34,200	required	Cost·Permit
Impact Window Installation	$11,000 – $51,400	required	Cost·Permit
Exterior Door Replacement	$1,100 – $7,900	usually required	Cost·Permit
Garage Door Replacement	$1,700 – $9,200	required	Cost·Permit
Siding Installation	$9,600 – $45,600	usually required	Cost·Permit
Stucco Repair	$1,000 – $18,600	conditional	Cost·Permit
Soffit & Fascia Replacement	$2,200 – $13,200	conditional	Cost·Permit
Gutter Installation	$1,000 – $7,500	rarely required	Cost·Permit
Roof Repair	$500 – $5,800	conditional	Cost·Permit
Flat Roof Replacement	$7,400 – $34,500	required	Cost·Permit
Attic Insulation	$1,400 – $8,500	rarely required	Cost·Permit
Ductwork Replacement	$3,000 – $14,200	required	Cost·Permit
Mini Split Installation	$2,800 – $14,800	required	Cost·Permit
Flooring Installation	$2,900 – $22,900	rarely required	Cost·Permit
Tile Installation	$2,100 – $18,400	rarely required	Cost·Permit
Interior Painting	$1,800 – $11,100	rarely required	Cost·Permit
Exterior Painting	$3,300 – $17,500	rarely required	Cost·Permit
Drywall Repair	$400 – $5,200	rarely required	Cost·Permit
Kitchen Cabinet Refacing	$5,200 – $23,000	rarely required	Cost·Permit
Countertop Replacement	$2,500 – $13,600	rarely required	Cost·Permit
Tub to Shower Conversion	$4,200 – $19,000	usually required	Cost·Permit
Sod Installation	$1,000 – $8,000	rarely required	Cost·Permit
Irrigation System Installation	$2,600 – $11,700	conditional	Cost·Permit
Tree Removal	$500 – $6,500	conditional	Cost·Permit
Outdoor Kitchen	$7,100 – $53,300	usually required	Cost·Permit
Seawall Repair	$9,900 – $117,400	required	Cost·Permit
Dock Construction	$11,100 – $105,100	required	Cost·Permit
Well Installation	$6,700 – $30,500	required	Cost·Permit
Mold Remediation	$1,800 – $17,900	conditional	Cost·Permit
Water Softener Installation	$1,400 – $7,700	usually required	Cost·Permit
Home Addition	$55,400 – $344,700	required	Cost·Permit
Heat Pump Replacement	$7,700 – $26,100	required	Cost·Permit
Furnace Replacement	$3,800 – $13,700	required	Cost·Permit
Foundation Repair	$3,300 – $37,800	usually required	Cost·Permit
Basement Waterproofing	$3,500 – $20,900	conditional	Cost·Permit
Drain Field Replacement	$7,200 – $30,100	required	Cost·Permit
Toilet Installation	$300 – $1,300	rarely required	Cost·Permit
Hot Tub Installation	$6,500 – $26,000	usually required	Cost·Permit

Gresham permitting basics

Jurisdiction	Gresham, Multnomah County
Building department	Confirm with the city or county
Permit portal	No verified online portal on file
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

Oregon Building Codes Division

Model vintage August 2026. The links above are the issuing agencies' own pages — we publish them so you can confirm the current rule yourself, not as evidence that each fact on this page was re-checked with them today. Cost figures are modeled estimates based on national baselines adjusted for local labor and material pricing, not quotes. Permit rules change; confirm with the building department before starting work.