The 10 home addition contractors from Google's results for Portland, Oregon, ordered by Google rating weighted by review count. No firm pays to be listed or ranked.
Last updated
Licensing in Oregon. Oregon contractors need a Construction Contractors Board (CCB) license, which also carries a bond.
on GoogleVancouver, WA
Serden Group is a design-build remodeler serving Portland and Vancouver, Washington, with design and construction under a single contract. Its work covers whole-home renovations, kitchens, bathrooms and showers, layout changes, structural work, additions and ADUs, often in older Craftsman and mid-century houses.
(360) 836-7775 1104 Main St, Vancouver, WA 98660
on GoogleVancouver, WA
Amplified Renovations is a Vancouver, Washington remodeling company that takes on home additions and other renovation work for homeowners in the Portland area.
(360) 450-5547 720 SE 160th Ave Ste 103 pmb 207, Vancouver, WA 98684
on GoogleLake Oswego, OR
CK Custom Remodeling is a Lake Oswego, Oregon contractor for kitchen remodels, home additions and basement finishing.
(503) 736-6335 445 2nd St, Lake Oswego, OR 97034
on GooglePortland
Masters Construction Group builds home additions in Portland, most often rear bump-outs, primary suites, second stories and ADUs. Each addition is detailed to match the window proportions, siding reveal and roofline of the existing house so the new space is hard to spot from the street.
on GoogleMilwaukie, OR
Based in Milwaukie, OR, Steiner Remodel builds home additions for houses in the Portland area. The company runs each addition from design and planning through construction, aiming to match the new space to the character of the original home.
(503) 755-5110 1887 SE Milport Rd, Milwaukie, OR 97222
on GoogleTigard, OR
Creekstone Designs is a Tigard, Oregon remodeler listed for home additions and basement finishing in the Portland area. Its addition projects involve tying new foundations, framing, utilities and rooflines into existing houses, often on tight city lots.
(503) 405-9771 7100 SW Hampton St #231, Tigard, OR 97223
on GoogleTigard, OR
Mountainwood Homes remodels houses and builds custom homes across the Portland metro area and Southwest Washington. Its remodeling work runs from kitchens and bathrooms to whole-home renovations, with the team guiding projects from design through construction.
(503) 746-7338 11675 SW 66th Ave, Tigard, OR 97223
on GoogleTualatin, OR
From Tualatin, Oregon, Mosaik Design & Remodeling uses a single team to design and then build each home remodel. Projects span the Portland region, with Beaverton, Tigard, Lake Oswego, Milwaukie and West Linn among the communities it covers.
(503) 726-2222 7451 SW Coho Ct Ste 111, Tualatin, OR 97062
Portland
Home additions are the core of PDX Remodeling & Design, a design-build general contractor in Portland and Beaverton. It builds second-story expansions, in-law suites and bump-outs for primary bedrooms, and also takes on kitchen remodeling.
Portland
For houses in Portland and surrounding areas, Good Bones Homes builds second-story additions, bathroom additions and sunrooms. Each addition is planned with the homeowner to fit the existing property and add usable living space.
In Portland, a bump-out typically costs $26,500 – $63,500. Remodeling labor in Portland runs about 6% above the US median, which accounts for most of the difference from the same project elsewhere.
These are the firms from Google's results for "home additions portland or", with directories, chains and suppliers removed. They are ordered by Google rating weighted by review count, and the ratings shown are Google's. No firm pays to be listed or ranked. The list was last updated in October 2026.
Usually yes, or a design-build firm with in-house design. Additions need stamped structural drawings for the permit in most places, and zoning review on setbacks, height and lot coverage.