MULTNOMAH COUNTY, OR — ADU CONSTRUCTION

Serving Multnomah County, OR

I See Construct serves Multnomah County for ADU construction and major renovation projects. Licensed for Oregon work. Based in Battle Ground, WA — right across the Columbia River from Portland.

Worker operating compactor on dirt in front of a partially constructed house with framed roof and siding.
Quick Answer

ADUs in Multnomah County, OR are permitted through the Portland Bureau of Development Services (BDS). Most ADUs in Multnomah County cost $120,000 to $300,000 or more depending on size and site conditions. Oregon contractor licensing is required for all construction work in Multnomah County. I See Construct holds Oregon licensing and serves Portland and surrounding Multnomah County areas.

Services

What We Build in Multnomah County

ADU Construction

Detached, attached, and conversion ADUs in Portland and Multnomah County. Permitted through Portland BDS. We manage the application process and the full build.

Garage Builds & Shops

Large-scope whole-home renovations and major additions in the Portland metro. No standalone kitchen or bathroom jobs.

Full Home Remodels

Detached garages and shop buildings on Multnomah County lots. Oregon permits apply.

Cities

Multnomah County Areas We Serve

Portland (all neighborhoods) · Gresham · Troutdale · Fairview · Wood Village · Maywood Park. We also serve neighboring Clackamas County, OR and across the Columbia in Clark County, WA.

PERMITS

ADU Permits in Multnomah County, OR

ADUs in Portland and Multnomah County are permitted through the Portland Bureau of Development Services. Portland has actively streamlined its ADU process — owner-occupancy requirements and most older development charge barriers have been removed.

Portland BDS permit timelines run 3 to 6 months for standard ADU applications — longer than Clark County. We build this into your project schedule from day one. The timeline we give you includes the permit wait.

Oregon contractor licensing is required for any construction project in Multnomah County. Always verify your contractor's Oregon credentials before signing. We hold the required Oregon licensing for work in the Portland metro.

FAQ

Common Questions About Building in Multnomah County, OR

How much does an ADU cost in Multnomah County?

ADUs in Multnomah County typically run $120,000 to $300,000 or more depending on size, site conditions, and finish level. Portland construction and permitting costs run higher than Clark County. We give you a real number after the site visit.

Do you handle permits in Multnomah County?

Yes. We manage the Portland BDS permit process — pre-application, formal application, and all required inspections. You do not deal with the permit office directly.

Does a contractor need Oregon licensing to build in Multnomah County?

Yes. Oregon contractor licensing is required for all construction work in the state. We hold the required Oregon credentials for work in Portland and Multnomah County. Ask any contractor for proof of Oregon licensing before you sign.

How long does it take to build an ADU in Multnomah County?

Portland BDS permit approval runs 3 to 6 months. Construction after permit approval takes 5 to 8 months. Total from design through move-in: 9 to 14 months depending on scope.

Get Started

Ready to Build in Multnomah County?

We come out, look at your property, and give you a straight answer on cost and timeline. No pressure. No obligation.