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TRUSTED BY DEMAREST, NJ HOMEOWNERS

  • Average homeowner rating star icon4.2
    Average homeowner rating
  • Verified reviews icon28
    Verified foundation repairs reviews

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

Avatar for American A-1 Waterproofing
American A-1 Waterproofing
4.7(
148
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationConcrete Foundation - RaiseConcrete Foundation - Repair+1 more

Serving Demarest, NJ and surrounding areas

Approved

In business since 1990

Free estimates

Emergency services offered

"The men who fixed my basement were very dedicated to doing a miraculous job, I went from hopeless to very happy, I cried when I opened the basement door and witnessed how they fixed my flooded basement, and Lou shared the most caring ideas to build a plan to solve the flooding when I met him, I instantly felt certain American A-1 Waterproofing would be the best choice."
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+14

Response time3 days
Response rate100%
3 neighbors recently requested a quote
Avatar for Groundworks
Groundworks
4.6(
308
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationConcrete Foundation - RepairConcrete Foundation - Raise+1 more

Serving Demarest, NJ and surrounding areas

Approved (Corporate)

In business since 1999

Free estimates

Emergency services offered

"I had a completely new French Drain system installed in one day! Professional courteous service from inspection thru completion. All aspects of the work to be performed were clearly explained along with justification and guaranteed satisfaction. I highly recommend Select Basement Waterproofing and commend Jason on his inspection and his team on a job well done! A pleasure to do business with them!"
Basement
Basement
Basement
Basement
Foundation

+15

Response time1 day
157 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Pro Rise Construction LLC
Pro Rise Construction LLC
5.0(
91
)
Concrete Foundation - Repair

Serving Demarest, NJ and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

"Pro Rise Construction LLC transformed our old cracked driveway into a beautiful and durable paved surface that instantly improved our curb appeal. The crew also repaired our front steps and added bluestone details that gave the home a luxury appearance. Vinny and Nitin stayed involved during the entire project and made sure every concern was handled properly."
Patio
Steps
Steps
Drive way pavers
78 neighbors recently requested a quote
Avatar for Blue Umbrella Waterproofing, LLC
Blue Umbrella Waterproofing, LLC
4.9(
57
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationFoundation Drainage - Install or Replace

Serving Demarest, NJ and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"OUTSTANDING! This company is so honest and leads with great integrity that the inspector Tony identified the root cause of where our water was leaking into our basement and said we may not need to install French drains which would have cost us about $4,000. Our previous owner drilled holes into our sidewalk outside of fireplace that leads to our basement for termite treatment. The cement covering holes eroded and water was leaking into the basement. We covered the holes with cement 2 days ago and with this passing rain not one drop of water is in the basement. We've had three other basement waterproofing companies come to her house and no one noticed it except for blue umbrella waterproofing. The owner even took the time to call me to ask how the inspection went. This is the only company I would use in the future."
OUR WORK
CARBON FIBER STRAP
Response time2 days
Response rate100%
8 neighbors recently requested a quote
Avatar for CSZ Construction
CSZ Construction
4.6(
69
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Demarest, NJ and surrounding areas

Approved

In business since 1998

Free estimates

Emergency services offered

"Cesar and his workers' were prompt. Most importantly, they are efficient and professional individuals. They completed the home improvement projects as promised. Cesar also fixed another home improvement project; we had not discussed. Lastly, the team cleaned-up after they finished the home projects."
 ALL COLUMNS FINISH
OLD DECK
Livinroom
 PAINTING
PREPARING FOOTINGS

+168

Recommended by93%of homeowners
Avatar for WEATHER-TITE WATERPROOFING INC.
WEATHER-TITE WATERPROOFING INC.
4.8(
100
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationFoundation Drainage - Install or Replace

Serving Demarest, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 1992

Free estimates

Warranties offered

"Those of us in Jersey can attest that the rain has been super problematic this year. After ten years in my home, my basement was flooding consistently. I contacted Bob at Westher Tite as well as 2 or 3 other companies for emergency diagnosis and repair. Bob was the first to reply, very informative and had the issue fixed within the week! He and his crew were punctual and professional. Once the work was completed, my basement was spotless. No signs of moisture or dust anywhere! Bob was helpful in explaining everything. Pricing was fair not the most nor the least expensive estimate. The VALUE, however was spot on! The rainfall hasn’t let up a bit and not a drop of water in my basement."
Response time12 hrs
24 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Arid Basement Waterproofing
Arid Basement Waterproofing
4.9(
89
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationFoundation Drainage - Install or Replace

Serving Demarest, NJ and surrounding areas

Approved

In business since 1963

Free estimates

Warranties offered

"The company is located in Ramsey NJ

The original inspection was completed for the original cost. The additional work, a check valve was performed on the same day the tech explained that this would prevent the back- up into the slop sink. However as the tech explained this is only a temp fix. We discussed different alternatives and his Boss , mr Fusco was suppose to call me with prices. He never called.
The tech who came was very polite and seemed knowledgable
For this reason I would not rate this provider as reliable
"
PVC French drain
Trench w/ gravel
Cementing trench
Sump pump
Sump pump with a cover

+1

2 neighbors recently requested a quote
Recommended by93%of homeowners
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Foundation Repair FAQs, answered by experts

Not all cracks in the basement floor signal foundation problems. As the house settles, you’ll notice very thin hairline cracks, which you don’t need to worry about. Cracks that are 1/8 inch or wider should require sealing, while ones that are 1/2 inch or wider require leveling. However, if you have cracks in your basement floor with heaving, you should call a pro to assess the situation. Heaving can lead to uneven flooring, structural issues, and foundation problems.

Ensures structural stability and long-term safety of the building.

No, hairline cracks in concrete are generally not a problem as they do not impact the strength and longevity of the concrete. Generally, cracks less than 0.3 millimeter wide don’t impact the structure. Hairline cracks can grow over time and weaken the structure, such as in a home foundation. Some hairline cracks can also cause leaks in a foundation. It’s important to watch the cracks to see if they grow. Contact a concrete contractor if you notice cracks exceeding 0.3 millimeter wide.

Yes, engineers assess soil load-bearing capacity and provide construction guidelines.

Foundation problems are costly to repair, but if you already own the home, you can either handle the issues or allow the property to (literally) sink into disrepair. The opposite is true when buying a home. Walk away if the seller refuses to lower the asking price once foundation issues are exposed or if they refuse to handle the problems before the completion of the sale.

The Demarest, NJ homeowners’ guide to foundation repairs

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