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The 10 Best Foundation Repair Companies in Portland (2026)
This list ranks the best foundation repair–related businesses in Portland using Google review data, updated for 2026. We apply a weighted method that balances average star ratings with review volume so businesses with long track records aren’t judged solely by small sample sizes. In Portland, a mix of older housing, seasonal rain and varied soils makes foundation and concrete issues a frequent homeowner concern, so local reputation can matter. This roundup is based on Google ratings and counts and is intended as a starting point for research, not a substitute for inspections, estimates or permit checks.
This ranking is computed from Google reviews (our method). Listings marked Partner are paid advertising spots: they sit alongside the ranking without changing its order.
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Stillwater Leveling
Stillwater Leveling tops our list thanks to a clean 5.0 Google rating combined with 70 reviews, giving it both a perfect score and a meaningful sample of feedback. Google lists it under the Foundation category and its address on SW 64th Ave places it in southwest Portland. Because our ranking weights rating by review count, that mix of excellence and volume pushes it to the number one spot.
The full ranking
AC Concrete Solutions
AC Concrete Solutions holds a 5.0 rating based on 43 Google reviews and appears under the Concrete contractor category.
43 reviews
FRS Remodeling Portland
FRS Remodeling Portland carries a 5.0 average from 37 Google reviews and is listed as a Painting business on NE 99th Ave in Northeast Portland.
37 reviews
Portland Construction & Restoration Solutions
Portland Construction & Restoration Solutions has a 4.9 rating across 924 Google reviews and is listed as a Water damage restoration service on SW 72nd Ave in southwest Portland.
924 reviews
Better Basements and Waterproofing
Better Basements and Waterproofing shows a 4.9 average from 251 Google reviews and is categorized as a Waterproofing service in Oregon City.
251 reviews
Foundations First Northwest
Foundations First Northwest earns a 4.9 score from 185 Google reviews and is listed as a Construction company in Wilsonville.
185 reviews
Groundworks Foundation Repair Portland
Groundworks Foundation Repair Portland posts a 5.0 rating with 16 Google reviews and is categorized as a Waterproofing service in Canby.
16 reviews
NW Seismic
NW Seismic carries a 4.9 average based on 91 Google reviews and is listed as a Construction company on NE 63rd Ave in Northeast Portland.
91 reviews
M Leon Construction
M Leon Construction records a 4.9 rating from 78 Google reviews and is categorized as a General contractor on SW Barnes Rd in southwest Portland.
78 reviews
TOA Concrete Construction LLC
TOA Concrete Construction LLC has a 4.9 average from 78 Google reviews and appears as a Concrete contractor on NE 19th Ave in Northeast Portland.
78 reviews
Frequently asked questions
How should I choose a foundation repair contractor in Portland?
Start by comparing verified reviews and the number of reviews to see consistent performance. Also check that the contractor carries proper licenses and insurance, can provide references or before/after photos, and offers a written estimate and timeline before work begins.
What factors influence the cost of foundation repair?
Costs depend on the scope and severity of the problem, access to the affected area, soil and drainage conditions, and the type of repair needed. Local permits, the home’s size and any associated structural work can also affect the final price, so get a site inspection and multiple estimates.
What should I check before hiring a company to do foundation work?
Verify the company’s credentials, insurance and references, and ask for a detailed written estimate that spells out materials, timeline and warranty terms. You should also confirm who will handle permits and whether subcontractors will be used.
How was this ranking built?
This list is based on Google review data and uses a weighted approach that combines average star rating with review count so businesses with many reviews are balanced against those with high but smaller samples. The dataset was pulled and evaluated for this update in 2026 and reflects only Google ratings and review totals.