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  • Verified reviews icon81
    Verified house leveling services reviews

Find House leveling pros in Darien

Avatar for JNC Contracting Associates, LLC
JNC Contracting Associates, LLC
5.0(
19
)

Serving Darien, CT and surrounding areas

Approved

In business since 1973

Free estimates

Warranties offered

"JNC Contracting did a wonderful job on our house in New Fairfield. They created an art studio, as well as children's playroom and beautiful stone and marble full bath addition. They were timely, neat, professional and paid attention to detail - will certainly use them again in the future."
Before Addition
After Addition
3,000 SF Addition Lake Home
3,000 SF Addition Lake Home
3,000 SF Addition Lake Home

+186

Response time2 days
2 neighbors recently requested a quote
Recommended by56%of homeowners
Avatar for Groundworks
Groundworks
5.0(
7
)

Serving Darien, CT and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 2025

Free estimates

Warranties offered

"The gentleman who came to my home were absolutely great! Explained everything and made sure I was happy with the work every step of the way. I was nervous in the beginning but my fear subsided after Robert Charlesworth, Marcelo largo, Isaiah belcher and Johnathon Lopez made for a great experience. The attention to detail and dust control, tapping off areas they felt I wouldn’t want getting dusty exceeded my expectations! Thank you for your hard work and kindness. Trucks looked awesome new as well as tools and equipment. Great job guys!!"
Foundation
Foundation
Foundation
Concrete
Concrete

+16

318 neighbors recently requested a quote
Avatar for Barbot Construction
Barbot Construction
4.0(
59
)

Serving Darien, CT and surrounding areas

Approved

In business since 1984

Free estimates

Credit card accepted

"I really appreciate the good quality job you did at my house. I are very happy with the kitchen that came out. Once we get the money we will for sure use you again for are bathrooms. Thanks again and i also told my neighbor about you. The team came the next day to give an estimate and i signed on the spot."
foundation
foundation
foundation
foundation
BASEMENT REMODEL/ADDITION

+174

Response time1 day
7 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for AA Outdoor Services, LLC
AA Outdoor Services, LLC
3.9(
33
)

Serving Darien, CT and surrounding areas

Approved

In business since 1990

Free estimates

Small jobs welcome

"Vinny is a very friendly and professional guy who we really enjoyed working with. The quality of his work is excellent- we used him for our sidewalk and refurbishing the rod iron railings. Overall positive experience with him and the final project turned out great! We would definitely recommend him and will be using his services again in future projects."
Driveway in New Haven (West Haven)
Rear entrance and parking area (West Haven)
Rear entrance and parking area (West Haven)
Step repair (West Haven)
Step repair (West Haven)

+61

Response time9 hrs
Recommended by100%of homeowners
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Showing 1-10 of 255
House Leveling questions, answered by experts

Most states and municipalities don’t require concrete mudjacking companies to carry a specific license, but they usually need to have a general contractor’s license, and they should be fully insured. The only exception is if the mudjacking company provides foundation repairs as well, or if it offers mudjacking for home foundations. In that case, they will typically need a foundation repair contractor’s license. You can check state requirements and then use Angi’s license lookup tool to confirm that a company is properly licensed to provide mudjacking services in your area.

Yes, expanding foam (also known as polyurethane foam) can lift concrete. This approach, called polyjacking, involves injecting the foam rather than concrete slurry to fill voids and raise the concrete slab back into place. It’s often faster and requires smaller drill holes than traditional mudjacking, though it may come at a higher cost. Some contractors also prefer polyjacking over mudjacking for more damaged and delicate slabs.

Mudjacking is suitable for sidewalks, driveways, patios, and nearly all exterior flat structures. However, it may not suit severely damaged or heavily cracked areas.

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.

Concrete leveling can last anywhere from five to 10 years or more, and in some cases, it can be a permanent solution. The longevity depends on the method used and whether the underlying cause of the sinking is addressed. For example, mudjacking typically lasts five to 10 years, while polyjacking can last for 20 years or more. It's best to consult a professional for an accurate timeline based on your specific situation and any factors that could cause the issue to recur.

The Darien, CT homeowners’ guide to house leveling services

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