62/100CR Score
Ranked #1 because of its Google rating and trade focus: 5.0★ from 49 Google reviews, listed on Google as “Foundation”.
- 5.0★ from 49 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 13555 SE 36th St, Bellevue, WA 98006
Best Foundation Repair Companies in Sammamish, WA (2026)
134 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Sammamish: Swift Masonry And Foundation Repair, CR Score 62/100; 5.0★ from 49 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Expert Masonry and Foundation Repairs, posts 24/7 hours; ranked #2 of 134.
- 8
Most-reviewed: Valentine Roofing, 1,359 Google reviews at 4.8★, the most of 134 ranked; ranked #8.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
134 Sammamish foundation repair companies are ranked here by CR Score, from ten published factors. 26 are open 24/7, 81 open Saturdays and 53 open Sundays, based on posted hours. The median Google rating is 5.0★ across 134 rated businesses.
Most of this list also appears on the Foundation repair companies in Federal Way ranking. See Foundation repair companies in Federal Way
Top 10 foundation repair companies in Sammamish at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Swift Masonry And Foundation Repair | 62 | 5.0★ (49) | Bellevue, 6 mi away | 24/7 | Overall |
| 2 | Expert Masonry and Foundation Repairs | 61 | 5.0★ (62) | Seattle, 13 mi away | 24/7 | Emergencies |
| 3 | Seattle Elite masonry and foundation repair | 60 | 5.0★ (40) | Seattle, 13 mi away | 24/7 | — |
| 4 | KG Basement Waterproofing Seattle | 60 | 5.0★ (34) | Seattle, 12 mi away | 24/7 | — |
| 5 | Seattle quality Waterproofing and foundation repair | 60 | 5.0★ (30) | Bellevue, 12 mi away | 24/7 | — |
| 6 | Sump Pump Wizards | 60 | 4.8★ (58) | Bonney Lake, 7 mi away | Sat · Sun · Evenings | — |
| 7 | Embassy Masonry And Foundation Repairs | 59 | 5.0★ (60) | Seattle, 12 mi away | Sat · Sun · Evenings | — |
| 8 | Valentine Roofing | 59 | 4.8★ (1,359) | Tukwila, 15 mi away | 24/7 | Most reviews |
| 9 | Seattle advanced waterproofing & foundation repairs | 59 | 5.0★ (41) | Bainbridge Island, 12 mi away | 24/7 | — |
| 10 | WA Masonry & Waterproofing LLC | 58 | 5.0★ (18) | Seattle, 13 mi away | 24/7 | — |
The 134 best foundation repair companies in Sammamish, ranked
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.
Based in Seattle, 13 mi away
61/100CR ScoreRanked #2 because of its Google rating and trade focus: 5.0★ from 62 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 62 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 221 1st Ave W, Seattle, WA 98119
Based in Seattle, 13 mi away
60/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 40 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 40 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 221 1st Ave W #200, Seattle, WA 98119
Based in Seattle, 12 mi away
60/100CR ScoreRanked #4 because of its Google rating and trade focus: 5.0★ from 34 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 34 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 800 S Weller St, Seattle, WA 98104
Based in Bellevue, 12 mi away
60/100CR ScoreRanked #5 because of its Google rating and trade focus: 5.0★ from 30 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 30 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Bonney Lake, 7 mi away
60/100CR ScoreRanked #6 because of its Google rating and trade focus: 4.8★ from 58 Google reviews, listed on Google as “Waterproofing service”.
- 4.8★ from 58 Google reviews
- Hours
- Mon–Sat 8 AM–7:30 PM · Sun 10 AM–7 PM
Based in Seattle, 12 mi away
59/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 60 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 60 Google reviews
- Hours
- Mon–Sun 7 AM–7 PM
- Address
- 1700 7th Ave, Seattle, WA 98101
Based in Tukwila, 15 mi away
59/100CR ScoreRanked #8 because of its Google rating and review volume: 4.8★ from 1,359 Google reviews, the most in Sammamish.
- 4.8★ from 1,359 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 400 Industry Dr Suite 130, Tukwila, WA 98188
Based in Bainbridge Island, 12 mi away
59/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 41 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 41 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Seattle, 13 mi away
58/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 18 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 18 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2727 Western Ave, Seattle, WA 98121
Based in Bainbridge Island, 12 mi away
58/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 36 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 36 Google reviews
- Hours
- Mon–Sun 6 AM–8 PM
Based in Seattle, 12 mi away
58/100CR ScoreRanked #12 because of its Google rating and trade focus: 5.0★ from 14 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 14 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1600 7th Ave #173, Seattle, WA 98101
Based in Auburn, 11 mi away
58/100CR ScoreRanked #13 because of its Google rating and trade focus: 5.0★ from 24 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 24 Google reviews
- Hours
- Mon–Sun 8 AM–6 PM
Based in Seattle, 14 mi away
57/100CR ScoreRanked #14 because of its Google rating and trade focus: 5.0★ from 24 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 24 Google reviews
- Hours
- Mon–Fri 9 AM–7 PM · Sat–Sun 10 AM–7 PM
- Address
- 13760 Aurora Ave N, Seattle, WA 98133
Based in Seattle, 13 mi away
57/100CR ScoreRanked #15 because of its Google rating and trade focus: 4.7★ from 26 Google reviews, listed on Google as “Waterproofing service”.
- 4.7★ from 26 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2801 Alaskan Wy Pier 70, Seattle, WA 98121
Based in Spanaway, 4 mi away
57/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 20 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 20 Google reviews
- Hours
- Mon–Sat 7 AM–6 PM · Sun closed
Based in Redmond, 2 mi away
57/100CR ScoreRanked #17 because of its Google rating and trade focus: 5.0★ from 21 Google reviews, listed on Google as “Masonry contractor”.
- 5.0★ from 21 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 18120 NE 68th St, Redmond, WA 98052
Based in Redmond, 4 mi away
56/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.8★ from 54 Google reviews, listed on Google as “Waterproofing service”.
- 4.8★ from 54 Google reviews
- Hours
- Mon–Fri 7:30 AM–5 PM · Sat–Sun closed
- Address
- 7351 148th Ave NE, Redmond, WA 98052
Based in Bothell, 12 mi away
56/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 5 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 22833 Bothell Everett Hwy #156, Bothell, WA 98021
Based in Bothell, 10 mi away
55/100CR ScoreRanked #20 because of its Google rating and review volume: 5.0★ from 351 Google reviews.
- 5.0★ from 351 Google reviews
- Hours
- Mon–Fri 7 AM–6 PM · Sat 8 AM–4 PM · Sun closed
- Address
- 10609 Beardslee Blvd, Bothell, WA 98011
Based in Kent, 19 mi away
55/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 5 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 5 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 25022 104th Ave SE #173, Kent, WA 98030
Based in Bainbridge Island, 5 mi away
55/100CR ScoreRanked #22 because of its Google rating and trade focus: 5.0★ from 28 Google reviews, listed on Google as “Concrete contractor”.
- 5.0★ from 28 Google reviews
- Hours
- Mon–Sun 6 AM–9 PM
Based in Mercer Island, 8 mi away
55/100CR ScoreRanked #23 because of its Google rating and review volume: 4.9★ from 61 Google reviews.
- 4.9★ from 61 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2811 75th Pl SE, Mercer Island, WA 98040
Based in Auburn, 24 mi away
55/100CR ScoreRanked #24 because of its Google rating and trade focus: 4.6★ from 22 Google reviews, listed on Google as “Waterproofing service”.
- 4.6★ from 22 Google reviews
- Hours
- Mon–Sun 8 AM–8 PM
- Address
- 33422 192nd Ave SE UNIT 7, Auburn, WA 98092
Based in Renton, 14 mi away
55/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 6 Google reviews
- Hours
- Mon–Sun 9 AM–6 PM
- Address
- 2000 Benson Rd S, Renton, WA 98055
How much do foundation repair companies cost in Sammamish?
National price ranges in USD, not adjusted for Sammamish. 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 |
How we ranked Sammamish foundation repair companies
We scored 134 Sammamish 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 Sammamish 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 |
Foundation repair companies in Sammamish: frequently asked questions
Who is the best foundation repair company in Sammamish?
By CR Score, the highest-ranked foundation repair company in Sammamish, WA is Swift Masonry And Foundation Repair with a CR Score of 62/100. It has 5.0★ from 49 Google reviews. It is open 24/7. Expert Masonry and Foundation Repairs (#2) and Seattle Elite masonry and foundation repair (#3) follow. We ranked 134 foundation repair companies on ten factors, last updated October 23, 2026.
How many foundation repair companies are there in Sammamish?
ContractorsRanked ranks 134 foundation repair companies serving Sammamish, WA. Counts are as of October 2026.
Which foundation repair companies in Sammamish are open 24/7?
26 ranked foundation repair companies in Sammamish post 24/7 hours. The highest-ranked are Swift Masonry And Foundation Repair (#1), Expert Masonry and Foundation Repairs (#2) and Seattle Elite masonry and foundation repair (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which foundation repair companies in Sammamish work on weekends?
81 of 134 ranked foundation repair companies post Saturday hours and 53 post Sunday hours. The highest-ranked open Saturdays are Swift Masonry And Foundation Repair (#1), Expert Masonry and Foundation Repairs (#2) and Seattle Elite masonry and foundation repair (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does foundation repair cost in Sammamish?
Foundation repair typically costs $2,225 to $8,133, with $5,174 typical (Per project: typical range of customer-reported repairs. US national range). This is a national range, not adjusted for Sammamish. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Sammamish foundation repair companies have?
The median Google rating among 134 rated foundation repair companies in Sammamish is 5.0★, with a median of 20 reviews. Valentine Roofing has the most, 1,359 reviews, and ranks #8. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ContractorsRanked rank foundation repair companies?
Each foundation repair company gets a 0–100 CR Score from ten published factors, led by reputation (25%), credentials (15%), review volume (10%) and trade focus (10%). A business with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Do foundation repair companies outside Sammamish count in this ranking?
Yes, if they are within 40 mi of the Sammamish city center, our service radius for foundation repair companies. Each listing shows where the business is based and how far away it is. Proximity is 5% of the CR Score, so a nearby business gets a small edge.
Update log for Sammamish
- October 2026: CR Scores recalculated for 134 foundation repair companies serving Sammamish.
More foundation repair companies and Sammamish pages
Foundation repair companies near Sammamish
- Foundation repair companies in Redmond, WA131 ranked
- Foundation repair companies in City of Sammamish, WA134 ranked
- Foundation repair companies in Union Hill-Novelty Hill, WA129 ranked
- Foundation repair companies in West Lake Sammamish, WA133 ranked
- Foundation repair companies in Klahanie, WA133 ranked
- Foundation repair companies in Bellevue, WA134 ranked
- Foundation repair companies in Kirkland, WA130 ranked
- Foundation repair companies in Cottage Lake, WA120 ranked
- Foundation repair companies in Kingsgate, WA126 ranked
- Foundation repair companies in Newcastle, WA132 ranked
Other trades in Sammamish
- Roofers in Sammamish1121 ranked
- Plumbers in Sammamish593 ranked
- Electricians in Sammamish512 ranked
- HVAC contractors in Sammamish511 ranked
- General contractors in Sammamish1375 ranked
- Painters in Sammamish483 ranked
- Landscapers in Sammamish375 ranked
- Handymen in Sammamish185 ranked
- Kitchen remodelers in Sammamish701 ranked
- Bathroom remodelers in Sammamish690 ranked
- Flooring contractors in Sammamish455 ranked
- Tile installers in Sammamish131 ranked
- Drywall contractors in Sammamish42 ranked
- Concrete contractors in Sammamish281 ranked
- Fence contractors in Sammamish256 ranked
- Deck builders in Sammamish416 ranked
- Siding contractors in Sammamish353 ranked
- Window installers in Sammamish352 ranked
- Gutter installers in Sammamish338 ranked
- Insulation contractors in Sammamish144 ranked
- Solar installers in Sammamish71 ranked
- Garage door repair companies in Sammamish228 ranked
- Tree services in Sammamish280 ranked
- Masonry contractors in Sammamish188 ranked
- Water damage restoration companies in Sammamish508 ranked
- Home builders in Sammamish616 ranked
- Demolition contractors in Sammamish104 ranked
- All contractors in Sammamish