59/100CR Score
Ranked #1 because of its Google rating and trade focus: 4.8★ from 33 Google reviews, listed on Google as “Waterproofing service”.
- 4.8★ from 33 Google reviews
- Hours
- Mon–Sun 8 AM–5 PM
- Address
- 2633 Main Rd, Tiverton, RI 02878
Best Foundation Repair Companies in Portsmouth, RI (2026)
79 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Portsmouth: Trident Waterproofing, CR Score 59/100; 4.8★ from 33 Google reviews; open 7 days a week.
- 6
Best for emergencies (open 24/7): Key Waterproofing Construction, posts 24/7 hours; ranked #6 of 79.
- 13
Most-reviewed: Groundworks, 1,799 Google reviews at 4.7★, the most of 79 ranked; ranked #13.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
79 Portsmouth foundation repair companies are ranked here by CR Score, from ten published factors. 22 are open 24/7, 56 open Saturdays and 38 open Sundays, based on posted hours. The median Google rating is 4.9★ across 79 rated businesses.
Top 10 foundation repair companies in Portsmouth at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Trident Waterproofing | 59 | 4.8★ (33) | Tiverton, 3 mi away | Sat · Sun | Overall |
| 2 | Hydroseal Basement Waterproofing | 57 | 5.0★ (41) | Fairhaven, 20 mi away | Sat · Sun | — |
| 3 | Hammer Basement Waterproofing | 57 | 5.0★ (160) | New Bedford, 16 mi away | — | — |
| 4 | Arch Masonry Restoration – Veteran Owned Masonry Contractor, Foundation Repair & Chimney Repair – Westport, MA Office | 57 | 4.9★ (145) | Fall River, 10 mi away | Sat · Sun · Evenings | — |
| 5 | Pioneer Basement Waterproofing | 57 | 4.9★ (851) | Fall River, 9 mi away | Evenings | — |
| 6 | Key Waterproofing Construction | 57 | 5.0★ (11) | Abington, 19 mi away | 24/7 | Emergencies |
| 7 | Drycrete Waterproofing | 56 | 5.0★ (660) | Walpole, 35 mi away | — | — |
| 8 | Ferreira Company | 56 | 5.0★ (360) | Taunton, 22 mi away | 24/7 | — |
| 9 | Mastercraft Waterproofing | 56 | 5.0★ (44) | Thompson, 37 mi away | 24/7 | — |
| 10 | Drycrete Waterproofing | 56 | 5.0★ (110) | East Providence, 16 mi away | — | — |
The 79 best foundation repair companies in Portsmouth, 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 Fairhaven, 20 mi away
57/100CR ScoreRanked #2 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
- Hours
- Mon–Fri 8 AM–6 PM · Sat 9 AM–3 PM · Sun 9 AM–12 PM
- Address
- 2 Arsene St Building 14, Fairhaven, MA 02719
Based in New Bedford, 16 mi away
57/100CR ScoreRanked #3 because of its Google rating and trade focus: 5.0★ from 160 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 160 Google reviews
- Hours
- Mon–Fri 8 AM–6 PM · Sat–Sun closed
- Address
- 118 Westview St, New Bedford, MA 02740
Based in Fall River, 10 mi away
57/100CR ScoreRanked #4 because of its Google rating and trade focus: 4.9★ from 145 Google reviews, listed on Google as “Masonry contractor”.
- 4.9★ from 145 Google reviews
- Hours
- Mon–Sun 5 AM–8 PM
- Address
- 649 State Rd, Westport, MA 02790
Based in Fall River, 9 mi away
57/100CR ScoreRanked #5 because of its Google rating and review volume: 4.9★ from 851 Google reviews.
- 4.9★ from 851 Google reviews
- Hours
- Mon–Fri 8 AM–8 PM · Sat–Sun closed
- Address
- 31 Sanford Rd, Westport, MA 02790
Based in Abington, 19 mi away
57/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 11 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 11 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Walpole, 35 mi away
56/100CR ScoreRanked #7 because of its Google rating and trade focus: 5.0★ from 660 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 660 Google reviews
- Hours
- Mon–Fri 8:30 AM–5 PM · Sat–Sun closed
- Address
- 2214 Providence Hwy, Walpole, MA 02081
Based in Taunton, 22 mi away
56/100CR ScoreRanked #8 because of its Google rating and review volume: 5.0★ from 360 Google reviews.
- 5.0★ from 360 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1 Taunton Green, Taunton, MA 02780
Based in Thompson, 37 mi away
56/100CR ScoreRanked #9 because of its Google rating and trade focus: 5.0★ from 44 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 44 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in East Providence, 16 mi away
56/100CR ScoreRanked #10 because of its Google rating and trade focus: 5.0★ from 110 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 110 Google reviews
- Hours
- Mon–Fri 8:30 AM–5 PM · Sat–Sun closed
- Address
- 850 Broadway, East Providence, RI 02914
Based in Seekonk, 17 mi away
55/100CR ScoreRanked #11 because of its Google rating and trade focus: 5.0★ from 12 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 12 Google reviews
- Hours
- Mon–Fri 7 AM–7 PM · Sat–Sun 9 AM–3 PM
#12 Jo Painting LLC
Based in Newport, 7 mi away
55/100CR ScoreRanked #12 because of its Google rating and review volume: 5.0★ from 60 Google reviews.
- 5.0★ from 60 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 451 Broadway, Newport, RI 02840
#13 Groundworks
Based in Plainville, 28 mi away
55/100CR ScoreRanked #13 because of its Google rating and review volume: 4.7★ from 1,799 Google reviews, the most in Portsmouth.
- 4.7★ from 1,799 Google reviews
- Hours
- Mon–Fri 7 AM–11 PM · Sat 8 AM–11 PM · Sun 10 AM–11 PM
- Address
- 33 W Bacon St, Plainville, MA 02762
Based in Providence, 18 mi away
54/100CR ScoreRanked #14 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
- 235 Promenade St, Providence, RI 02908
Based in Narragansett, 13 mi away
54/100CR ScoreRanked #15 because of its Google rating and trade focus: 5.0★ from 28 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 28 Google reviews
- Hours
- Mon–Fri 9 AM–5 PM · Sat–Sun closed
- Address
- 12 Old Pine Rd, Narragansett, RI 02882
Based in Abington, 38 mi away
53/100CR ScoreRanked #16 because of its Google rating and trade focus: 5.0★ from 8 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 8 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 99 Washington St, Abington, MA 02351
Based in Fall River, 12 mi away
53/100CR ScoreRanked #17 because of its Google rating and availability: 5.0★ from 24 Google reviews, open 24/7.
- 5.0★ from 24 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 421 Currant Rd, Fall River, MA 02720
Based in Ashland, 37 mi away
52/100CR ScoreRanked #18 because of its Google rating and trade focus: 4.5★ from 6 Google reviews, listed on Google as “Foundation”.
- 4.5★ from 6 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Acushnet, 16 mi away
52/100CR ScoreRanked #19 because of its Google rating and trade focus: 5.0★ from 4 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 4 Google reviews
- Hours
- Mon 7 AM–6 PM · Tue 7 AM–5 PM · Wed–Thu 7 AM–6 PM · Fri 6 AM–7 PM · Sat 12 AM–5 PM · Sun closed
Based in East Bridgewater, 34 mi away
52/100CR ScoreRanked #20 because of its Google rating and trade focus: 5.0★ from 3 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 3 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1534 Washington St, East Bridgewater, MA 02333
Based in Rehoboth, 7 mi away
52/100CR ScoreRanked #21 because of its Google rating and trade focus: 5.0★ from 6 Google reviews, listed on Google as “Masonry contractor”.
- 5.0★ from 6 Google reviews
- Hours
- Mon–Sun 6 AM–6 PM
Based in Ledyard, 31 mi away
52/100CR ScoreRanked #22 because of its Google rating and trade focus: 4.9★ from 61 Google reviews, listed on Google as “Waterproofing service”.
- 4.9★ from 61 Google reviews
- Hours
- Mon–Fri 9 AM–5 PM · Sat–Sun closed
Based in Middletown, 6 mi away
52/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.7★ from 29 Google reviews, listed on Google as “Contractor”.
- 4.7★ from 29 Google reviews
- Hours
- Mon–Sun 7 AM–8 PM
- Address
- 1064 Wapping Rd, Middletown, RI 02842
#24 Set In Stone
Based in North Kingstown, 14 mi away
52/100CR ScoreRanked #24 because of its Google rating and review volume: 4.8★ from 49 Google reviews.
- 4.8★ from 49 Google reviews
- Hours
- Mon–Thu 7 AM–7 PM · Fri 7 AM–3 PM · Sat 8 AM–2 PM · Sun 8 AM–12 PM
- Address
- 28 Beacon Dr Unit A, North Kingstown, RI 02852
Based in Abington, 37 mi away
52/100CR ScoreRanked #25 because of its Google rating and trade focus: 5.0★ from 7 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 7 Google reviews
- Hours
- Mon–Sun 9 AM–6 PM
Foundation repair companies ranked #26 to #50
#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 79 ranked foundation repair companies here; the rest are on their profiles.
Also serving Portsmouth
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 |
|---|---|---|
| A&A Masonry & Waterproof Inc. | 5.0★ (1) | 35 mi |
| As Concrete Foundations Inc | 5.0★ (2) | 34 mi |
| Boston Waterproofing and Masonry Restoration | 5.0★ (2) | 37 mi |
| Brunca Waterproofing Corporation | 1.0★ (1) | 17 mi |
| Build Strong Masonry & Construction | 1.0★ (1) | 35 mi |
| Coastal Construction Management | 4.9★ (35) | In Portsmouth |
| ConcreteCo Forms | 5.0★ (1) | 37 mi |
| Countywide Masonry & Waterproofing | 5.0★ (2) | 39 mi |
| Diversified Services | 3.0★ (2) | 35 mi |
| Dry Foundation Expert LLC | 5.0★ (2) | 9 mi |
| GT Roofing and Construction | 3.5★ (2) | 30 mi |
| JFM Construction | 5.0★ (1) | 17 mi |
| K&W Waterproofing | 5.0★ (1) | 35 mi |
| MacKean Flooring | 5.0★ (1) | 35 mi |
| PML CARPENTRY & REMODELING | 5.0★ (2) | 40 mi |
| Prevost Concrete Forms & Foundations | 5.0★ (1) | 9 mi |
| The wall Basement waterproofing & Masonry | 5.0★ (2) | 37 mi |
| Triumph Masonry, Restoration & Waterproofing LLC | 5.0★ (2) | 37 mi |
| Valeri Construction | 5.0★ (1) | 35 mi |
| Warwick Waterproofing | 5.0★ (2) | 19 mi |
How much do foundation repair companies cost in Portsmouth?
National price ranges in USD, not adjusted for Portsmouth. 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 Portsmouth foundation repair companies
We scored 79 Portsmouth 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 22, 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 Portsmouth 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 Portsmouth: frequently asked questions
Who is the best foundation repair company in Portsmouth?
By CR Score, the highest-ranked foundation repair company in Portsmouth, RI is Trident Waterproofing with a CR Score of 59/100. It has 4.8★ from 33 Google reviews. It is open 7 days a week. Hydroseal Basement Waterproofing (#2) and Hammer Basement Waterproofing (#3) follow. We ranked 79 foundation repair companies on ten factors, last updated October 22, 2026.
How many foundation repair companies are there in Portsmouth?
ContractorsRanked ranks 79 foundation repair companies serving Portsmouth, RI. Another 20 within 40 mi are listed but not ranked yet. Counts are as of October 2026.
Which foundation repair companies in Portsmouth are open 24/7?
22 ranked foundation repair companies in Portsmouth post 24/7 hours. The highest-ranked are Key Waterproofing Construction (#6), Ferreira Company (#8) and Mastercraft Waterproofing (#9). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which foundation repair companies in Portsmouth work on weekends?
56 of 79 ranked foundation repair companies post Saturday hours and 38 post Sunday hours. The highest-ranked open Saturdays are Trident Waterproofing (#1), Hydroseal Basement Waterproofing (#2) and Arch Masonry Restoration – Veteran Owned Masonry Contractor, Foundation Repair & Chimney Repair – Westport, MA Office (#4). Posted hours are office hours; crews may book weekend jobs separately.
How much does foundation repair cost in Portsmouth?
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 Portsmouth. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Portsmouth foundation repair companies have?
The median Google rating among 79 rated foundation repair companies in Portsmouth is 4.9★, with a median of 14 reviews. Groundworks has the most, 1,799 reviews, and ranks #13. 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 Portsmouth count in this ranking?
Yes, if they are within 40 mi of the Portsmouth 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 Portsmouth
- October 2026: CR Scores recalculated for 79 foundation repair companies serving Portsmouth.
More foundation repair companies and Portsmouth pages
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