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TRUSTED BY CORNWALL, NY HOMEOWNERS

  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon38
    Verified house leveling services reviews

Top-Rated House leveling pros in Cornwall - Updated Nov 2026

Avatar for Unique Construction
Unique Construction
5.0(
32
)
Find a Custom Home Builder

Serving Cornwall, NY and surrounding areas

Approved

In business since 2010

Free estimates

Warranties offered

"Overall about the best contractor experience we've had from start to finish. The job took about 2.5 weeks. It began with the company's owner talking with us regarding contract and timing. The contract itself was a clear indication of throughness and detail. Every workday began with a chat of what was to be done and ended the day with a thorough clean up. On average there were three employees, all incredibly professional, very accommodating, great senses of humor and personable. For example, when they painted the entire interior, we asked if they could leave one bedroom and bathroom for last while they painted the rest of the house. On a few occasions, we asked for a paint color change. The contract didn't call for swapping out a few light fixtures but they did so without hesitation. Every request was fulfilled. They work was amazing. The house had some damaged Sheetrock and popping nail heads. Most of it had not been painted since the original paint job almost 30 years ago. The 20' ceilings presented real challenges but all was done so that the finished job makes the house look brand new. The carpentry, electrical work and door installation all are perfect. Most importantly, the professional workers clearly enjoy their work, enjoy working together and made this job for us, more like a social event with friends coming to visit daily. The owner of the company Dave Nessel is a serious (but with a sense of humor) knowledgeable businessman and a pleasure to work with. I would hire Unique again without hesitation for another job. They do quality, professional and spotlessly clean work."
Little Rock Cabin Nestled in the woods
Little rock Cabin Nestled in the woods
Little rock Cabin Nestled in the woods
Master Bedroom
Master Bathroom

+71

Response time5 days
Recommended by93%of homeowners
Avatar for Diggs Building Technologies Corp.
Diggs Building Technologies Corp.
4.9(
43
)
Concrete Foundation - Repair

Serving Cornwall, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2005

Free estimates

Credit card accepted

"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."
Foundation Repair
Foundation Repair
Foundation Repair
Foundation Repair
Foundation Repair

+17

Response time12 hrs
Response rate85%
21 neighbors recently requested a quote
Avatar for Basement Systems Of New York
Basement Systems Of New York
4.3(
42
)
Concrete Foundation - RepairConcrete - Injection Leveling - MudjackingConcrete - Injection Leveling - Mudjacking - For Business+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 IncrediBuild, Inc.
IncrediBuild, Inc.
5.0(
5
)
Find a Custom Home Builder

Serving Cornwall, NY and surrounding areas

Approved

In business since 2020

Free estimates

Offers commercial services

"We bought a new construction private house. We're very happy with the quality and finishes. But the best part was the customer service! Anything that had to be fixed or changed was taken care of fast and efficiently, at no extra cost!"
07-09 Thelma
07-09 Thelma
07-09 Thelma
07-09 Thelma
07-09 Thelma

+809

25 neighbors recently requested a quote
Avatar for The A Team Waterproofing LLC
The A Team Waterproofing LLC
5.0(
5
)
Concrete Foundation - Repair

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

3 neighbors recently requested a quote
Avatar for Raza & Sons Construction, Inc.
Raza & Sons Construction, Inc.
5.0(
2
)
Concrete - Injection Leveling - MudjackingConcrete - Injection Leveling - Mudjacking - For BusinessConcrete Foundation - Repair+1 more

Serving Cornwall, NY and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

Platinum Construction is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and responsibility in all of our jobs. We are a locally owned and operated business with more than 6 years of experience serving Brooklyn, NY and surrounding areas. There is no job too big, or too small for our team. Call today and let us put our experience to work for you!

Response time1 day
Recommended by100%of homeowners
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House Leveling FAQs, answered by experts

The average cost for mudjacking is around $1,200, though prices can range from $300 to $3,400. On a per-square-foot basis, you can expect to pay between $3 and $8, with an average of about $5 per square foot. The final cost depends on several factors, including the square footage of the concrete, the type of slab, its accessibility, whether it is load-bearing, and the type of material used to lift it. Generally, lifting a driveway, small patio, or sidewalk is less expensive than lifting a slab foundation or garage floor.

Polyjacking can be a permanent solution to sunken concrete if you also address the underlying issue—like poor drainage—at the same time. The polyurethane material itself can last as long as or even outlast the concrete you’re lifting it with. Your sunken concrete issue will likely return if you don’t couple polyjacking with proper drainage to prevent future soil movement and sinking.

A sinking foundation can be lifted, most often by installing piers to re-level and support the weight of the house. Depending on the cause and extent of the sinking, other methods to lift a foundation include underpinning and mudjacking. Consult a foundation repair pro to determine the best way to lift your sinking foundation. 

Many contractors offer warranties for their work. Confirm terms before starting the project.

Most houses are expected to settle over time, but foundation sinking of more than a few inches or uneven sinking of more than an inch for every 20 feet is cause for concern. Any significant or uneven sinking should be assessed by a professional to determine the cause and perform any necessary repairs. 

The Cornwall, NY homeowners’ guide to house leveling services

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