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Best foundation repair specialists near Cornwall, NY

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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, Jake and Jesse were phenomenal to work with! They performed structural repair to the box beam and main beam. They showed up early everyday and worked diligently to finish the job to a high quality standard. Their customer service and reliability can't be beat. I would recommend Diggs to anyone with foundational repair needs!"
Foundation Repair
Foundation Repair
Foundation Repair
Foundation Repair
Foundation Repair

+17

Response time12 hrs
Response rate85%
20 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

"The foundation was shifting. They drilled holes, put anchors. They put in a moisture barrier. They totally remedied it. They were professional. They have a whole team of architects. They were great! I recommend them to anyone who has basement problems. Very timely, professional."
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
23 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

"Tim explained the project details in advance and how this should alleviate basement flooding. Tim and crew, excavated to below slab on 2 sides of house per plan; repaired cracks and holes in foundation, applied waterproofing and perimeter drainage with pump. Backfilled and leveled work site and seeded grass. Crew was professional and hard working. First rainfall few days later showed everything working perfectly."
Our Work
Our Work
Our Work
Response time1 day
Response rate96%
9 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 Genesis A
Genesis A
4.7(
10
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Cornwall, NY and surrounding areas

Approved

In business since 2004

Free estimates

Offers commercial services

We are a well established business with over 10 years of unmatched expertise. Customer and priorities are always first. We are very timely with our work and never lose attention to detail. Please call us today for an estimate. We look forward to working with you.

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

10 neighbors recently requested a quote
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Foundation Repair FAQs, answered by experts

Foundation cracks that are 1/8 inch wide or less, aren’t uneven across the gap, and don’t continue widening over time are usually just normal settling cracks and don’t suggest structural issues. Horizontal cracks and stair-step cracks on foundation walls, any cracks that continue widening, are wider than 1/8 inch, or where one side juts out beyond the other, are often indicative of structural damage.

Periodic sealing and cleaning to maintain appearance and integrity.

It depends on the severity of the damage, lasting from a few days to several weeks.

In order to raise your home to make foundation repairs, you'll need to bring in a structural engineer to help you design the project. You'll also need to see if you're eligible for the permits needed, and contact a foundation repair company near you.

You could DIY the work, but unless you have plumber’s knowledge for identifying and fixing a slab leak and specialized equipment in your tool shed, attempting to DIY your slab leak repair isn’t a good idea. It’s simply not something that the average homeowner can take on themselves, regardless of how many successful DIY projects they’ve got under their belt. You could, however, do something simple like foundation waterproofing yourself to save some money on the post-repair work.

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.