The 10 basement finishing 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
All Level Construction finishes basements in Vancouver, Washington and Portland, Oregon, building recreation rooms with bars, home theaters, offices and basement ADUs. The work runs from moisture control through final finishes, including game room design and construction.
(503) 816-8080 5510 NW Walnut St, Vancouver, WA 98663
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 GoogleMilwaukie, OR
Tortoise Construction converts unfinished or dated basements into living space across SE and NE Portland, Lake Oswego, West Linn and the wider Portland metro. Typical builds are guest suites, family rooms, home offices and basement apartments meant for renting out, planned through a five-step process before demolition starts.
(971) 800-0150 8525 SE 32nd Ave, Milwaukie, OR 97222
on GooglePortland, OR
Green Light Construction remodels kitchens, bathrooms and basements in Portland and also takes on historic renovations. Its work centers on Northeast Portland neighborhoods such as Alameda, Laurelhurst, Concordia and Irvington, and it helps qualifying remodels move through city permitting.
(503) 515-2315 4705 NE Mallory Ave, Portland, OR 97211
on GooglePortland, OR
Woodland Construction Group takes on basement finishing projects in Portland, Oregon.
(503) 912-2000 1355 NW Everett St Ste 100, Portland, OR 97209
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 GooglePortland, OR
Evergreen Renovations remodels basements throughout the Portland metro, converting storage and laundry areas into playrooms, gyms, offices, guest suites or media rooms. Some projects focus on added storage or general livability instead.
(503) 720-4699 4824 SW Scholls Ferry Rd, Portland, OR 97225
on GooglePortland, OR
Hamish Murray works on basement remodeling projects in Portland, Oregon.
(503) 460-7203 4438 S Corbett Ave, Portland, OR 97239
on GoogleSilverton, OR
Johns Waterproofing takes on basement finishing work in Silverton, Oregon.
(503) 419-0404 219 Airport Rd NE, Silverton, OR 97381
Portland
Keyser Construction finishes basements across the Portland metro area, converting them into family rooms, guest suites, home offices, gyms, in-law suites and rental units. Each project deals with moisture control, radon mitigation and egress windows so the finished rooms stay dry and usable.
In Portland, a basic finish typically costs $26,500 – $53,000. 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 "basement finishing 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.
Only with an emergency escape opening, usually an egress window of a minimum size with a window well, plus the ceiling height your local code requires. Without them it cannot legally be sold as a bedroom.