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

Avatar for Adirondack Basement Systems, Inc.
Adirondack Basement Systems, Inc.
4.6(
107
)
Concrete Foundation - RaiseConcrete Foundation - Repair

Serving Nassau, NY and surrounding areas

Approved (Corporate)

In business since 1998

Free estimates

Warranties offered

"Adirondack basement is wonderful Zach and Michael couldn?t have been any better friendly courteous very hard-working cleaned up. The basement looks better than it did the day the house was built."
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SaniDry Sedona Dehumidifer
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+9

Response time12 hrs
Response rate100%
8 neighbors recently requested a quote
Avatar for Leading Concrete Solutions
Leading Concrete Solutions
4.8(
38
)
Concrete - Injection Leveling - MudjackingConcrete - Injection Leveling - Mudjacking - For Business

Serving Nassau, NY and surrounding areas

Approved

In business since 2018

Free estimates

Warranties offered

"Robert did a fantastic job from start to finish. The cement around my pool and the front walkway look fantastic, he is a professional who knows his craft, I highly recommend Leading Concrete Solutions for all your concrete leveling requirements."
Concrete lifting
Demo
Pool Decking
Step
Step lift

+3

Response time2 days
Response rate88%
8 neighbors recently requested a quote
Avatar for C & J Custom Builders Inc
C & J Custom Builders Inc
4.8(
25
)
Find a Custom Home Builder

Serving Nassau, NY and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"C&J did an incredible job completely gutting and remodeling our 1895 farmhouse. This was a huge 8-month job with the variety of complications and required changes an old house can throw at you; throughout the process Craig and Jerry offered excellent design suggestions, collaborated very well with our architects, worked diligently to stay on budget, and each day demonstrated craftsmanship and professionalism of the highest level. C&J’s team of subcontractors and designers are excellent too. These people are the best the building trade has to offer: conscientious, skilled, creative, and a pleasure to work with. Hoping to have them back soon to remodel the guest cottage and garage! See Photos here: [*** Link removed ***]"
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+36

Response time2 days
Response rate100%
Recommended by100%of homeowners
Avatar for All Dry Basement
All Dry Basement
4.2(
22
)
Concrete Foundation - Repair

Serving Nassau, NY and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"When I contacted All Dry I was gun shy. This would have been my 4th contractor I would have to deal with. All theee prior told me something completely different and tried to take advantage of my limited knowledge. From the get go, All Dry Basement made me feel extremely comfortable. Todd and his team answered my questions thoroughly and were always available for my questions . The work that was done was amazing, he was punctual everyday and worked some nights until 8pm until the work was completed. It is like a different world in the crawlspace, the smell is gone, all of the debris were cleaned out and. Brought to the dump, a vapor seal was installed, a dehumidifier for the moisture, one entryway to the crawlspace was closed up and the main entrance was re worked for easier access. Blocks from the foundation were grouted because the blocks were dead, , floor joists were spay flames and the House is now Warmer. I couldn’t be more please wth the quality of work All Dry Basement did at my home. They were professional and amazing and I would 100% recommend them. My stress level has decreased a million percent because after two years I found a company that was honest from the get go and their work shows it!!!! HIRE THEM FOR YOR CRAWLSPCE AND BASEMENT NEEDS. Do not look any further."
Additional Photos
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+7

Response time1 day
Response rate100%
21 neighbors recently requested a quote
Avatar for Groundworks
Groundworks
5.0(
6
)
Concrete Foundation - RaiseConcrete Foundation - RepairConcrete - Injection Leveling - Mudjacking+1 more

Serving Nassau, NY and surrounding areas

Approved (Corporate)

In business since 2019

Free estimates

Warranties offered

"We cannot say enough good about Dylan, Seth and Tim. 3 very hard workers. Lifting heavy heavy loads of concrete and stone up my and down my cellar and porch steps. They never stopped for breaks. Great workers. Respectful and pleasant and knew their job requirements. Very careful with doors, floors etc It?s a messy job. ThankYou"
Foundation
Foundation
Foundation
Foundation
Foundation

+14

245 neighbors recently requested a quote
Avatar for LaBello's Masonry and Waterproofing, LLC
LaBello's Masonry and Waterproofing, LLC
3.5(
186
)
Concrete Foundation - Repair

Serving Nassau, NY and surrounding areas

Approved

In business since 2001

Free estimates

Emergency services offered

"Chad responded within 24 hours, had a team out to the house within a few days and the job was completed within a week. The guys were friendly, were focused on the work and cleaned up when they were finished."
LaBellos Masonry
Foundation Repair
Basement and foundation
Exterior block wall
Exterior waterproofing

+1

Response time7 hrs
61 neighbors recently requested a quote
Recommended by74%of homeowners
Grady's Painting Plastering/Construction
2.0(
174
)
Concrete Foundation - Repair

Serving Nassau, NY and surrounding areas

Approved

In business since 1969

Free estimates

Emergency services offered

"I needed stucco repair work on an old chimney (and other spots). Grady was meticulous and thoughtful on what approaches and materials would work. Throughout the project they allocated sufficient time for each treatment to cure and inspected the work before proceeding to the next step. Grady started the project with no money down and only required ongoing payments for materials until the project was well underway. The final payment was due only after they did a final inspection. Total project cost was also below other bids."
Response time11 hrs
Response rate100%
Recommended by57%of homeowners
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House Leveling FAQs, answered by experts

Charges correlate with surface size, settlement depth, and access, often yielding significant savings over concrete replacement.

The polyurethane used for polyjacking will expand and cure in 15 to 30 minutes. After that point, your slab will be safe to walk on and even drive on in the case of a sidewalk or concrete driveway. Double-check with your concrete lifting specialist to confirm a curing timeline, as products can differ.

The method involves lifting settled concrete using pressurized cement slurry via drilled holes. This solves uneven surfaces and prevents further settling.

A good slump height really depends on the project, but there is a use for nearly all slump levels. For example, low slumps are best in projects that require structure, such as curbs and roads. High slumps often require additional reinforcement, but they flow more freely into hard-to-reach spaces.

There is no real alternative to underpinning, although mudjacking and polyjacking are other repair methods that can add support from underneath your foundation. Rather than placing supportive piers under your structure, these involve pumping a material under your slab to lift a sunken section back into its original position. Polyjacking, in particular, is sometimes a suitable solution for stabilization issues under slab foundations, but underpinning is often accepted as the best and most permanent solution.

The Nassau, NY homeowners’ guide to house leveling services

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