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TRUSTED BY CORNWALL, NY HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon22
    Verified foundation repairs reviews

Top-Rated Foundation repair specialists in Cornwall - Updated Nov 2026

Avatar for Diggs Building Technologies Corp.
Diggs Building Technologies Corp.
4.9(
43
)
Foundation Drainage - Install or ReplaceConcrete Foundation - RepairPoured Concrete Wall - Repair

Serving Cornwall, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2005

Free estimates

Credit card accepted

"Tim had initially come over for the installation of a French drain on the side of the house, but instead uncovered that our foundation had receded away from the house due to past water damage. He immediately stepped into gear explaining every detail to me and gave me a quote for the amount of work that needed to be done. He and his crew made time in his busy schedule to get the job done and finished it completely in 3 days. I am so grateful for the work they have done and how quickly they did it. I highly recommend this business for anyone experiencing foundation/water damage issues. Thank you from the bottom of my heart!"
Foundation Repair
Foundation Repair
Foundation Repair
Foundation Repair
Foundation Repair

+17

Response time12 hrs
Response rate85%
22 neighbors recently requested a quote
Avatar for MFS MASONRY
MFS MASONRY
4.8(
81
)
Poured Concrete Wall - Repair

Serving Cornwall, NY and surrounding areas

Approved

In business since 1997

Free estimates

Customers say: Quick response

"Mike Sheehan responded to my inquiry on Angie's List. He came for an estimate on June 11 . The work started on June 27 and was finished on June 28. There were 3 workers working nonstop for 2 days. The old steps were taken off and the stone steps were put on. They really give a new look to the house. My neighbors gave me complements on the work."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+20

4 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Basement Systems Of New York
Basement Systems Of New York
4.3(
42
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationConcrete Foundation - RepairConcrete Foundation - Raise+1 more

Serving Cornwall, NY and surrounding areas

Approved

In business since 1993

Free estimates

Warranties offered

"Eric the consultant inspected the job site took the measurements he needed and gave us an explanation of how the work was going to be handled. He also offered a discount and scheduled our project for the following week. When the day came the crew arrived on time and went right to work. We will use them again in the future for our pool deck. Overall a great bunch of people and a greater service."
Pouring A New Slab At Our Office - Bullville, NY
Calling A Last Minute Audible To Install A New Concrete Slab - Liberty, NY
Waterproofing A Walkout Basement With Our Patented Two-Stage Waterproofing System - Pine Bush, NY
Installing An Interior Waterproofing System With A Gravity Discharge - Holmes, NY
Knocking Down And Rebuilding A Foundation Wall - Kiamesha Lake,  NY

+7

Response time1 day
19 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Diggs Building Technologies Corp.
Diggs Building Technologies Corp.
4.9(
40
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Cornwall, NY and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"To summarize quickly, I cannot speak highly enough of Diggs Building Technologies. I am absolutely blown away by what they accomplished and would hire them again without hesitation. Worth every penny. For the past 5 years, I have been restoring/rennovating a 1890 Balloon Frame Colonial in Tillson, NY. While the original house foundation was extremely well built and well-mainted, I canâ t say that much about the 2 story enclosed porch put on in the 1920â sâ ¦ The foundation was crumbling; the first floor walls were bowing out and the floor had settled 3+ inches. To further complicate the matter, all the mechnicals of the house (water, sewage, and gas) ran through that back porch foundation making the project extremely complex in scope. Despite these massive issues on the first floor, the 2nd floor of the porch was in great shape and it was important for us to find a builder who could rebuild the entire bottom half of the structure while also preserving the top. This was no small feat. Much to my surprise, Tim and his crew (alongside their engineer) were able to do just that. With precision, they navigated the mechanicals, removed the old foundation and floor and then went on to replace both of those elements. While doing this, the room above stayed untouched. Not one crack on the walls, not one bow in the floor, and shockingly - all 4 of the original casement windows still opened and close. Overall, they did an excellent job and I would hire them without hesitation again. If you are dealing with any foundation issues, I encourage you to hire Tim, Jake, and Jesse. They are the only team I would trust doing this type of work."
Our Work
Our Work
Our Work
Response time1 day
Response rate96%
10 neighbors recently requested a quote
Avatar for The A Team Waterproofing LLC
The A Team Waterproofing LLC
5.0(
5
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationConcrete Foundation - RepairFoundation Drainage - Install or Replace

Serving Cornwall, NY and surrounding areas

Approved

In business since 1999

Free estimates

Credit card accepted

Waterproofing, Retaining Walls, Pavers and Concrete. The A Team Waterproofing in Harriman, New York specializes in high-quality interior and exterior waterproofing for residential and commercial properties. In every project, I use only the best products available on the market. These include PolyDrain, perforated PVC piping, filter fabric, and Thoroseal items. Additionally, I am able to match the price offered by other contractors in my area.

Project Photos
Project Photos
Project Photos
Project Photos
Project Photos

+14

2 neighbors recently requested a quote
Avatar for Tigasi Home Improvement LLC
Tigasi Home Improvement LLC
5.0(
11
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Cornwall, NY and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

"Fausto and his team did an amazing job ripping out old fiberglass and installing new spray in. They also made a custom drywall cover for the exposed pipes. All done in 1.5 days. Less expensive than the comp. Would use again. Great to work with."
8 neighbors recently requested a quote
Avatar for C.E.S home solutions LLC
C.E.S home solutions LLC
5.0(
3
)
Concrete Foundation - RaiseConcrete Foundation - RepairPoured Concrete Wall - Repair

Serving Cornwall, NY and surrounding areas

Approved

"CES home solutions did a fantastic job. They took a beat up concrete porch and stairs and made it brand new again. I am so impressed with their work they preformed that I’m going to have them do more work for me. I give them 5 stars for a job well done ."
steps renewals
steps renewals
steps renewals
steps renewals
steps renewals

+2

8 neighbors recently requested a quote
Avatar for Jaguar Paving Corp.
Jaguar Paving Corp.
4.4(
7
)
Foundation Drainage - Install or Replace

Serving Cornwall, NY and surrounding areas

Approved

In business since 2020

Free estimates

Warranties offered

We pride our company on flexible pricing, reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!

New Asphalt Driveway with a new Edge (Belgian Blocks)
New Asphalt Driveway
New Asphalt Driveway
New Asphalt Driveway
Patio Pavers

+22

Response time1 day
Response rate96%
9 neighbors recently requested a quote
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Foundation Repair FAQs, answered by experts

Yes, it is normal for a block foundation to crack. Some block foundation cracks are more serious than others and indicative of a larger structural problem. On the other hand, minor cracks may not be of immediate concern but should be monitored. Regardless, foundational cracks are not an uncommon response to wear on a structure from time and weather.

Yes, foundation repairs are worth it if you have a significant problem or see signs that could worsen if not dealt with. If your foundation fails, your home can lose up to 20% of its value. Protecting your home from serious structural damage and avoiding more costly repairs later is well worth the money.

It’s crucial to hire a foundation company that’s professional, experienced, and reliable, starting by choosing local experts with at least five to ten years of experience with your type of project. Local foundation companies will understand the soil and weather conditions in your area and can carry out the best solution based on your property characteristics. You should ask for a list of customer references, read through online reviews, and check for customer complaints and unresolved issues filed with the Better Business Bureau (BBB) before hiring.

Yes, it is worth repairing concrete cracks. Concrete cracks are normal, and they can be hard to keep from appearing. However, it is worth repairing cracks in concrete for many reasons. For example, it’s possible to repair concrete to the point where the repair is almost invisible. Also, if the crack is left alone, it can become bigger and more expensive to fix over time.

The best foundation repair method will depend on the issue you’re having, but usually, foundation instability is best fixed using supportive piers, like steel piers or helical piers. A professional foundation repair contractor or structural engineer should always decide what the best course of action is, and even then, it’s imperative that you also take measures to treat the underlying issue as well, like soil erosion or oversaturation from runoff.

The Cornwall, NY homeowners’ guide to foundation repairs

From average costs to expert advice, get all the answers you need to get your job done.