133 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
Best overall in SeaTac: Expert Masonry and Foundation Repairs, CR Score 61/100; 5.0★ from 62 Google reviews; open 24/7.
Best for emergencies (open 24/7): Valentine Roofing, posts 24/7 hours; ranked #2 of 133.
Most-reviewed: Valentine Roofing, 1,359 Google reviews at 4.8★, the most of 133 ranked; ranked #2.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
133 SeaTac foundation repair companies are ranked here by CR Score, from ten published factors. 26 are open 24/7, 79 open Saturdays and 51 open Sundays, based on posted hours. The median Google rating is 5.0★ across 133 rated businesses.
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Expert Masonry and Foundation Repairs | 61 | 5.0★ (62) | Seattle, 12 mi away | 24/7 | Overall |
| 2 | Valentine Roofing | 61 | 4.8★ (1,359) | Tukwila, 2 mi away | 24/7 | Emergencies, Most reviews |
| 3 | Seattle quality Waterproofing and foundation repair | 61 | 5.0★ (30) | Bellevue, 5 mi away | 24/7 | — |
| 4 | Swift Masonry And Foundation Repair | 61 | 5.0★ (49) | Bellevue, 11 mi away | 24/7 | — |
| 5 | KG Basement Waterproofing Seattle | 60 | 5.0★ (34) | Seattle, 10 mi away | 24/7 | — |
| 6 | Seattle Elite masonry and foundation repair | 60 | 5.0★ (40) | Seattle, 12 mi away | 24/7 | — |
| 7 | Embassy Masonry And Foundation Repairs | 60 | 5.0★ (60) | Seattle, 12 mi away | Sat · Sun · Evenings | — |
| 8 | Sump Pump Wizards | 59 | 4.8★ (58) | Bonney Lake, 10 mi away | Sat · Sun · Evenings | — |
| 9 | Seattle advanced waterproofing & foundation repairs | 59 | 5.0★ (41) | Bainbridge Island, 11 mi away | 24/7 | — |
| 10 | WA Masonry & Waterproofing LLC | 59 | 5.0★ (18) | Seattle, 12 mi away | 24/7 | — |
Ordered by CR Score, a 0–100 score from ten published factors. Paid placement never changes the order.
Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Ranked #1 because of its Google rating and trade focus: 5.0★ from 62 Google reviews, listed on Google as “Waterproofing service”.
Based in Tukwila, 2 mi away
Ranked #2 because of its Google rating and review volume: 4.8★ from 1,359 Google reviews, the most in SeaTac.
Based in Bellevue, 5 mi away
Ranked #3 because of its Google rating and trade focus: 5.0★ from 30 Google reviews, listed on Google as “Waterproofing service”.
Based in Bellevue, 11 mi away
Ranked #4 because of its Google rating and trade focus: 5.0★ from 49 Google reviews, listed on Google as “Foundation”.
Based in Seattle, 10 mi away
Ranked #5 because of its Google rating and trade focus: 5.0★ from 34 Google reviews, listed on Google as “Waterproofing service”.
Based in Seattle, 12 mi away
Ranked #6 because of its Google rating and trade focus: 5.0★ from 40 Google reviews, listed on Google as “Waterproofing service”.
Based in Seattle, 12 mi away
Ranked #7 because of its Google rating and trade focus: 5.0★ from 60 Google reviews, listed on Google as “Waterproofing service”.
Based in Bonney Lake, 10 mi away
Ranked #8 because of its Google rating and trade focus: 4.8★ from 58 Google reviews, listed on Google as “Waterproofing service”.
Based in Bainbridge Island, 11 mi away
Ranked #9 because of its Google rating and trade focus: 5.0★ from 41 Google reviews, listed on Google as “Waterproofing service”.
Based in Seattle, 12 mi away
Ranked #10 because of its Google rating and trade focus: 5.0★ from 18 Google reviews, listed on Google as “Waterproofing service”.
Based in Bainbridge Island, 11 mi away
Ranked #11 because of its Google rating and trade focus: 5.0★ from 36 Google reviews, listed on Google as “Waterproofing service”.
Based in Seattle, 12 mi away
Ranked #12 because of its Google rating and trade focus: 5.0★ from 14 Google reviews, listed on Google as “Waterproofing service”.
Based in SeaTac
Ranked #13 because of its Google rating and trade focus: 4.7★ from 101 Google reviews, listed on Google as “Foundation”.
Based in Kent, 7 mi away
Ranked #14 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Waterproofing service”.
Based in Seattle, 12 mi away
Ranked #15 because of its Google rating and trade focus: 4.7★ from 26 Google reviews, listed on Google as “Waterproofing service”.
Based in Federal Way, 16 mi away
Ranked #16 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “Waterproofing service”.
Based in Auburn, 17 mi away
Ranked #17 because of its Google rating and trade focus: 5.0★ from 24 Google reviews, listed on Google as “Waterproofing service”.
Based in Seattle, 20 mi away
Ranked #18 because of its Google rating and trade focus: 5.0★ from 24 Google reviews, listed on Google as “Waterproofing service”.
Based in Auburn, 14 mi away
Ranked #19 because of its Google rating and trade focus: 4.6★ from 22 Google reviews, listed on Google as “Waterproofing service”.
Based in Renton, 4 mi away
Ranked #20 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Waterproofing service”.
Based in Auburn, 8 mi away
Ranked #21 because of its Google rating and review volume: 4.8★ from 71 Google reviews.
Based in Mercer Island, 10 mi away
Ranked #22 because of its Google rating and review volume: 4.9★ from 61 Google reviews.
Based in Bothell, 24 mi away
Ranked #23 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Waterproofing service”.
Based in Spanaway, 25 mi away
Ranked #24 because of its Google rating and review volume: 5.0★ from 814 Google reviews.
Based in Federal Way, 6 mi away
Ranked #25 because of its Google rating and review volume: 4.9★ from 39 Google reviews.
#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile. We publish the top 50 of 133 ranked foundation repair companies here; the rest are on their profiles.
20 more foundation repair companies within 40 mi that we can't rank yet: too few reviews, or a trade we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| APEX Specialty Coatings | 5.0★ (1) | 2 mi |
| Concrete Experts LLC | 5.0★ (2) | 25 mi |
| Elite Concrete and Foundation LLC | 5.0★ (1) | 21 mi |
| Foundation Roof & Window Cleaning | 5.0★ (1) | 19 mi |
| Groundworks | In SeaTac | |
| Hodge & Sons LLC | 4.0★ (1) | 23 mi |
| Magnuson Concrete | 3.0★ (2) | 35 mi |
| Master EIFS | 5.0★ (2) | 7 mi |
| MelbigAldana Concrete Solutions LLC | 5.0★ (7) | In SeaTac |
| Pacific GC Services | In SeaTac | |
| Premier Masonry & Waterproofing | 5.0★ (1) | 9 mi |
| Progressive Wallcovering & Painting | 5.0★ (2) | 35 mi |
| Quezada Pavers LLC | 4.7★ (15) | In SeaTac |
| R&R Foundation Specialist | 1.0★ (1) | 15 mi |
| Richie Foundation | 5.0★ (1) | 6 mi |
| Seatac Builders | 5.0★ (2) | 19 mi |
| Seattle Waterproofing and Masonry | 5.0★ (1) | 11 mi |
| Steve's Tile & Stone | 1.0★ (2) | 26 mi |
| Verdant Visions Painting | 5.0★ (2) | 10 mi |
| Westbay Masonry and Construction | 5.0★ (2) | 12 mi |
National price ranges in USD, not adjusted for SeaTac. Each row names its basis and the month we checked it.
| Job | Low | Typical | High | Basis | Checked |
|---|---|---|---|---|---|
| Foundation repair | $2,225 | $5,174 | $8,133 | Per project: typical range of customer-reported repairs. US national range | October 2026 |
We scored 133 SeaTac foundation repair companies on ten factors, weighted as shown. A business is ranked when its trade is confirmed and it has 3 or more Google reviews or a claimed profile. A business with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed October 23, 2026.
Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from | In SeaTac data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Credentials | 15% | Active state license, bond and workers’ comp on file | Not yet collected |
| Review volume | 10% | Number of Google reviews, compared with the most-reviewed business on the list | Measured |
| Recency | 5% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | How clearly the business does this trade (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The business has claimed its ContractorsRanked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The business links to ContractorsRanked from its own website with our badge, checked periodically | Measured |
| ContractorsRanked reviews | 10% | Verified customer reviews collected by ContractorsRanked: their rating and how many there are | Measured |