91/100CR Score
Ranked #1 because of its Google rating and availability: 5.0★ from 156 Google reviews, open 24/7.
- 5.0★ from 156 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 15 Mt Pleasant Ave, Dover, NJ 07801
Best Foundation Repair Companies in Mendham, NJ (2026)
450 foundation repair companies ranked by CR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Mendham: United Waterproofing, CR Score 91/100; 5.0★ from 156 Google reviews; open 24/7.
- 2
Best for emergencies (open 24/7): Pure Service Pro, posts 24/7 hours; ranked #2 of 450.
- 47
Most-reviewed: Quality 1st Basement Systems, 1,961 Google reviews at 4.8★, the most of 450 ranked; ranked #47.
Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank
450 Mendham foundation repair companies are ranked here by CR Score, from 8 published factors. 116 are open 24/7, 357 open Saturdays and 261 open Sundays, based on posted hours. The median Google rating is 4.9★ across 450 rated businesses.
Top 10 foundation repair companies in Mendham at a glance
| Rank | Business | CR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | United Waterproofing | 91 | 5.0★ (156) | Dover, 9 mi away | 24/7 | Overall |
| 2 | Pure Service Pro | 91 | 4.9★ (250) | East Hanover, 12 mi away | 24/7 | Emergencies |
| 3 | Pro Dry Waterproofing LLC | 90 | 4.9★ (129) | Rockaway, 10 mi away | 24/7 | — |
| 4 | ARD Waterproofing | 89 | 5.0★ (146) | Caldwell, 18 mi away | 24/7 | — |
| 5 | H2GO Waterproofing | 89 | 5.0★ (36) | Bernardsville, 4 mi away | 24/7 | — |
| 6 | Blue Umbrella Waterproofing | 88 | 5.0★ (412) | Cranford, 18 mi away | Sat · Sun · Evenings | — |
| 7 | Groundworks | 88 | 4.9★ (586) | South Plainfield, 18 mi away | Sat · Sun · Evenings | — |
| 8 | Bonded Waterproofing Solutions | 87 | 5.0★ (130) | Bergenfield, 33 mi away | 24/7 | — |
| 9 | StrongBuild Masonry & Construction, Chimney repair, Foundation Waterproofing | 86 | 5.0★ (72) | Jersey City, 27 mi away | 24/7 | — |
| 10 | B Altmans Waterproofing | 86 | 4.8★ (136) | Staten Island, 28 mi away | 24/7 | — |
The 450 best foundation repair companies in Mendham, ranked
Ordered by CR Score, a 0–100 score from 8 published factors. Paid placement never changes the order.
Scores below: based on 6 of 8 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.
Based in East Hanover, 12 mi away
91/100CR ScoreRanked #2 because of its Google rating and availability: 4.9★ from 250 Google reviews, open 24/7.
- 4.9★ from 250 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2001 US-46 Suite 310, Parsippany-Troy Hills, NJ 07054
Based in Rockaway, 10 mi away
90/100CR ScoreRanked #3 because of its Google rating and availability: 4.9★ from 129 Google reviews, open 24/7.
- 4.9★ from 129 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 45 Pine St, Rockaway, NJ 07866
Based in Caldwell, 18 mi away
89/100CR ScoreRanked #4 because of its Google rating and availability: 5.0★ from 146 Google reviews, open 24/7.
- 5.0★ from 146 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 98 Smull Ave, West Caldwell, NJ 07006
Based in Bernardsville, 4 mi away
89/100CR ScoreRanked #5 because of its Google rating and availability: 5.0★ from 36 Google reviews, open 24/7.
- 5.0★ from 36 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Cranford, 18 mi away
88/100CR ScoreRanked #6 because of its Google rating and trade focus: 5.0★ from 412 Google reviews, listed on Google as “Waterproofing service”.
- 5.0★ from 412 Google reviews
- Hours
- Mon–Fri 6 AM–11 PM · Sat 6 AM–9 PM · Sun 6 AM–6 PM
- Address
- 29 Alden St Suite LL1B, Cranford, NJ 07016
#7 Groundworks
Based in South Plainfield, 18 mi away
88/100CR ScoreRanked #7 because of its Google rating and trade focus: 4.9★ from 586 Google reviews, listed on Google as “Waterproofing service”.
- 4.9★ from 586 Google reviews
- Hours
- Mon–Fri 7 AM–11 PM · Sat 8 AM–11 PM · Sun 10 AM–11 PM
- Address
- 2624 Hamilton Blvd, South Plainfield, NJ 07080
Based in Bergenfield, 33 mi away
87/100CR ScoreRanked #8 because of its Google rating and availability: 5.0★ from 130 Google reviews, open 24/7.
- 5.0★ from 130 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 65 Woodbine St, Bergenfield, NJ 07621
Based in Jersey City, 27 mi away
86/100CR ScoreRanked #9 because of its Google rating and availability: 5.0★ from 72 Google reviews, open 24/7.
- 5.0★ from 72 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 438 West Side Ave, Jersey City, NJ 07304
Based in Staten Island, 28 mi away
86/100CR ScoreRanked #10 because of its Google rating and availability: 4.8★ from 136 Google reviews, open 24/7.
- 4.8★ from 136 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 304 Gower St building b, Staten Island, NY 10314
Based in Bridgewater, 13 mi away
86/100CR ScoreRanked #11 because of its Google rating and availability: 5.0★ from 17 Google reviews, open 24/7.
- 5.0★ from 17 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1831 Mountain Top Rd, Bridgewater, NJ 08807
Based in Staten Island, 30 mi away
85/100CR ScoreRanked #12 because of its Google rating and availability: 5.0★ from 46 Google reviews, open 24/7.
- 5.0★ from 46 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 484 Liberty Ave, Staten Island, NY 10305
Based in Carlstadt, 29 mi away
84/100CR ScoreRanked #13 because of its Google rating and availability: 4.8★ from 42 Google reviews, open 24/7.
- 4.8★ from 42 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 400 Commerce Blvd, Carlstadt, NJ 07072
Based in Caldwell, 30 mi away
84/100CR ScoreRanked #14 because of its Google rating and availability: 4.9★ from 36 Google reviews, open 24/7.
- 4.9★ from 36 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
Based in Clifton, 25 mi away
84/100CR ScoreRanked #15 because of its Google rating and availability: 4.6★ from 37 Google reviews, open 24/7.
- 4.6★ from 37 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 8 Oak St, Clifton, NJ 07014
Based in Berkeley Heights, 17 mi away
84/100CR ScoreRanked #16 because of its Google rating and trade focus: 4.9★ from 320 Google reviews, listed on Google as “Waterproofing service”.
- 4.9★ from 320 Google reviews
- Hours
- Mon–Sat 8 AM–8 PM · Sun closed
- Address
- 26 North Ave, Garwood, NJ 07027
Based in Scotch Plains, 18 mi away
83/100CR ScoreRanked #17 because of its Google rating and availability: 4.8★ from 8 Google reviews, open 24/7.
- 4.8★ from 8 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 2115 Lake Ave, Scotch Plains, NJ 07076
Based in Berkeley Heights, 10 mi away
83/100CR ScoreRanked #18 because of its Google rating and availability: 4.9★ from 114 Google reviews, open 24/7.
- 4.9★ from 114 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 57 River Rd, Berkeley Heights, NJ 07922
Based in Bridgewater, 13 mi away
83/100CR ScoreRanked #19 because of its Google rating and availability: 5.0★ from 93 Google reviews, open 24/7.
- 5.0★ from 93 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 231 Easton Tpke, Bridgewater, NJ 08807
#20 Crack Pros
Based in Carteret, 28 mi away
82/100CR ScoreRanked #20 because of its Google rating and availability: 5.0★ from 10 Google reviews, open 24/7.
- 5.0★ from 10 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
#21 Lincoln Roofing
Based in East Brunswick, 24 mi away
82/100CR ScoreRanked #21 because of its Google rating and availability: 5.0★ from 185 Google reviews, open 24/7.
- 5.0★ from 185 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 1588 US-130, North Brunswick Township, NJ 08902
Based in East Brunswick, 22 mi away
82/100CR ScoreRanked #22 because of its Google rating and availability: 5.0★ from 137 Google reviews, open 24/7.
- 5.0★ from 137 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 914 Hermann Rd, North Brunswick Township, NJ 08902
Based in Avenel, 22 mi away
82/100CR ScoreRanked #23 because of its Google rating and trade focus: 4.9★ from 28 Google reviews, listed on Google as “Waterproofing service”.
- 4.9★ from 28 Google reviews
- Hours
- Mon–Sun 9 AM–11:30 PM
- Address
- 5 W Park Ave, Avenel, NJ 07001
Based in Staten Island, 27 mi away
82/100CR ScoreRanked #24 because of its Google rating and availability: 4.3★ from 12 Google reviews, open 24/7.
- 4.3★ from 12 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 521 Yetman Ave, Staten Island, NY 10307
Based in Totowa, 22 mi away
81/100CR ScoreRanked #25 because of its Google rating and availability: 5.0★ from 100 Google reviews, open 24/7.
- 5.0★ from 100 Google reviews
- Open 24/7
- Hours
- Open 24 hours, 7 days
- Address
- 36 Highview Ave, Totowa, NJ 07512
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 450 ranked foundation repair companies here; the rest are on their profiles.
Also serving Mendham
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 |
|---|---|---|
| AAA Established Construction | 5.0★ (2) | 26 mi |
| Advance Tech Waterproofing | 5.0★ (2) | 13 mi |
| Alamos home improvements LLC | In Mendham | |
| Alert Roofing Construction | 5.0★ (2) | 20 mi |
| Apolo Contractor Corp | 4.5★ (2) | 22 mi |
| Building Restoration Contractors, LLC | In Mendham | |
| C&S Foundations Inc. | 3.0★ (2) | 23 mi |
| Camden Group Inc | 3.0★ (2) | 21 mi |
| Country Nursery | 4.5★ (28) | In Mendham |
| G & L Custom Home Improvements | 5.0★ (2) | 7 mi |
| Gem Roofing & Waterproofing | 4.5★ (2) | 27 mi |
| Go Pro Basements | 3.0★ (2) | 20 mi |
| INFRARED ROOF INSPECTORS | 5.0★ (2) | 24 mi |
| Interstate Contracting And Restoration | 5.0★ (2) | 16 mi |
| LaFerla Brothers Masonry & Hardscaping | 5.0★ (2) | 19 mi |
| Nu-Look Home Improvement | 3.0★ (2) | 16 mi |
| Powerville Construction | 5.0★ (9) | In Mendham |
| Roofing Siding Acero | 3.0★ (2) | 23 mi |
| SDC Contracting Inc. | 4.5★ (8) | In Mendham |
| Waterproofing Guys | 5.0★ (2) | 21 mi |
How much do foundation repair companies cost in Mendham?
National price ranges in USD, not adjusted for Mendham. 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 Mendham foundation repair companies
We scored 450 Mendham foundation repair companies on 8 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. Unknown factors are left out of the score, 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 Mendham data |
|---|---|---|---|
| Reputation | 35% | Bayesian-adjusted Google star rating | Measured |
| Credentials | 15% | Active state license 0.6, bond 0.2, workers’ comp 0.2 | Not yet collected |
| Review volume | 10% | log10(reviews + 1) against the list maximum | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 10% | Weekly open hours, Saturday, Sunday, 24/7 or same-day | Measured |
| Trade focus | 10% | Google main category 1.0, business name 0.7, additional category 0.5 | Measured |
| Proximity | 5% | 1.0 when based in the city, falling to 0 at the trade’s radius | Measured |
| Completeness | 5% | Website, photos, description, hours, claimed profile (0.2 each) | Measured |
Foundation repair companies in Mendham: frequently asked questions
Who is the best foundation repair company in Mendham?
By CR Score, the highest-ranked foundation repair company in Mendham, NJ is United Waterproofing with a CR Score of 91/100. It has 5.0★ from 156 Google reviews. It is open 24/7. Pure Service Pro (#2) and Pro Dry Waterproofing LLC (#3) follow. We ranked 450 foundation repair companies on 8 factors, last updated October 22, 2026.
How many foundation repair companies are there in Mendham?
ContractorsRanked ranks 450 foundation repair companies serving Mendham, NJ. Another 20 within 40 mi are listed but not ranked yet. Counts are as of October 2026.
Which foundation repair companies in Mendham are open 24/7?
116 ranked foundation repair companies in Mendham post 24/7 hours. The highest-ranked are United Waterproofing (#1), Pure Service Pro (#2) and Pro Dry Waterproofing LLC (#3). Hours come from each business's Google listing as of October 2026, so call to confirm.
Which foundation repair companies in Mendham work on weekends?
357 of 450 ranked foundation repair companies post Saturday hours and 261 post Sunday hours. The highest-ranked open Saturdays are United Waterproofing (#1), Pure Service Pro (#2) and Pro Dry Waterproofing LLC (#3). Posted hours are office hours; crews may book weekend jobs separately.
How much does foundation repair cost in Mendham?
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 Mendham. Prices were last checked October 2026. Get at least two written quotes before you hire.
What Google rating do Mendham foundation repair companies have?
The median Google rating among 450 rated foundation repair companies in Mendham is 4.9★, with a median of 17 reviews. Quality 1st Basement Systems has the most, 1,961 reviews, and ranks #47. 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 8 published factors, led by reputation (35%), credentials (15%), review volume (10%) and recency (10%). Factors we cannot measure are left out, not scored as zero. Only businesses with a confirmed trade and 3 or more reviews, or a claimed profile, are ranked.
Do foundation repair companies outside Mendham count in this ranking?
Yes, if they are within 40 mi of the Mendham 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 Mendham
- October 2026: CR Scores recalculated for 450 foundation repair companies serving Mendham.
- October 2026: 1 duplicate listing merged.
More foundation repair companies and Mendham pages
Foundation repair companies near Mendham
- Foundation repair companies in Bernardsville, NJ480 ranked
- Foundation repair companies in Randolph, NJ462 ranked
- Foundation repair companies in Morristown, NJ503 ranked
- Foundation repair companies in Succasunna, NJ368 ranked
- Foundation repair companies in Bedminster, NJ414 ranked
- Foundation repair companies in Morris Plains, NJ507 ranked
- Foundation repair companies in Dover, NJ464 ranked
- Foundation repair companies in Wharton, NJ445 ranked
- Foundation repair companies in Landing, NJ294 ranked
- Foundation repair companies in Budd Lake, NJ226 ranked
Other trades in Mendham
- Roofers in Mendham2628 ranked
- Plumbers in Mendham794 ranked
- Electricians in Mendham591 ranked
- HVAC contractors in Mendham1023 ranked
- General contractors in Mendham1268 ranked
- Painters in Mendham295 ranked
- Landscapers in Mendham395 ranked
- Handymen in Mendham101 ranked
- Kitchen remodelers in Mendham636 ranked
- Bathroom remodelers in Mendham603 ranked
- Flooring contractors in Mendham428 ranked
- Tile installers in Mendham81 ranked
- Drywall contractors in Mendham20 ranked
- Concrete contractors in Mendham223 ranked
- Fence contractors in Mendham169 ranked
- Deck builders in Mendham249 ranked
- Siding contractors in Mendham906 ranked
- Window installers in Mendham704 ranked
- Gutter installers in Mendham332 ranked
- Insulation contractors in Mendham112 ranked
- Solar installers in Mendham180 ranked
- Garage door repair companies in Mendham144 ranked
- Tree services in Mendham371 ranked
- Masonry contractors in Mendham560 ranked
- Water damage restoration companies in Mendham1148 ranked
- Home builders in Mendham684 ranked
- Demolition contractors in Mendham106 ranked
- All contractors in Mendham