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    Average homeowner rating
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    Verified foundation repairs reviews

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

Avatar for Century Masonry & Waterproofing
Century Masonry & Waterproofing
4.9(
64
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationFoundation Drainage - Install or Replace

Serving Flanders, NJ and surrounding areas

Approved

In business since 1996

Free estimates

Warranties offered

"We hired Century Masonry & Waterproofing several years ago after suffering through several flooded basements. At a time when some contractors are out there trying to sell unnecessary services and products, Sean is an honest, consultative, helpful professional. He was able to identify problems with our existing sump pit and corrected them. He also identified the fact that the sump pit was not in the lowest point of our foundation and installed a second sump pit and pump there. Thankfully, and knock on wood, we haven't had an issue in years. Thank you Sean and Century Masonry & Waterproofing!"
The beginning
WaterGuard XL
Final Product
CleanSpace around support pillars
CleanSpace on the floor

+26

Response time1 day
4 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Joseph & Sons Construction, LLC
Joseph & Sons Construction, LLC
4.9(
168
)
Foundation Drainage - Install or ReplaceFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Flanders, NJ and surrounding areas

Approved

In business since 1995

Free estimates

Emergency services offered

"Very happy with my experience with Joseph and Sons Construction. Was looking for a local contractor to handle several small/medium size projects around the home. Reviews were good so went with them. Could not be more pleased with the quality of work and responsiveness from Angelo. By the time it was finished, he felt like a neighbor Iâ ve known for years. He answered all my questions, and all work was completed exactly as described. The work included new brick and stone patio, foundation repair, porch repair, replacement of basement windows. Also gave many good suggestions for improvements I could do myself. I would definitely recommend them for any projects, big or small, around your home."
custom luxury home
custom luxury home
remodeled spacious basement
Renovated backyard
renovated walkway and driveway

+1

Response time1 day
1 neighbors recently requested a quote
Recommended by89%of homeowners
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 Flanders, NJ and surrounding areas

Approved

In business since 1990

Free estimates

Emergency services offered

"I can't say enough good things about American A-1 Waterproofing. Roland and his team were amazing. I had originally opted to go with another contractor to install a French drain and sump pump, but after exposing the foundation, they got spooked and said they wouldn't perform the work. Roland came by and assured me his team could get the work done and they did not disappoint. Through the initial estimate, permitting, construction and final sign off, Roland and his team were communicative, prompt, clean, and extremely professional. It was an absolute pleasure to work with them!"
Picture 1
Picture 2
Picture 3
Picture 4
Picture 5

+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 Flanders, 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
66 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 Flanders, NJ and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

"We contacted Pro Rise Construction LLC for stucco repair and driveway paving, and the experience was excellent from start to finish. Their team arrived on time every day and treated our property with respect. The driveway came out smooth and durable, and the stucco work blended perfectly with the original exterior. Vinny and Nitin are true professionals who care about customer satisfaction."
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 Flanders, NJ and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"The team at Blue Umbrella was fantastic from start to finish. We all worry about our homes and who we choose to do work, especially when it comes to big projects like these. Tony, Steve and the entire team were fantastic. It started with Tony, coming to my house and giving me all the information I needed to understand what was happening and how to fix it. I got busy, and they did a great job following up. Not being pushy at all, just checking in. When I finally had time to schedule the work, they were able to accommodate my schedule. On the day of the project, they arrived on time, were neat, and cleaned up everything when they were done. The process was quick and easy and I feel confident that this will solve my water problems. Don't waste your time getting 3-4 quotes... These folks are great and are worth every penny."
OUR WORK
CARBON FIBER STRAP
Response time2 days
Response rate100%
7 neighbors recently requested a quote
Avatar for WEATHER-TITE WATERPROOFING INC.
WEATHER-TITE WATERPROOFING INC.
4.8(
100
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationFoundation Drainage - Install or Replace

Serving Flanders, 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
22 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for One-Way GC, LLC
One-Way GC, LLC
4.6(
78
)
Poured Concrete Wall - Repair

Serving Flanders, NJ and surrounding areas

Approved

Super Service Award Winner

In business since 2009

Free estimates

Emergency services offered

"Great job! Showed up on time, gave reasonable quotes and excellent craftsmanship. I had several projects done including brick pointing, sidewalk repair and chimney repair. I highly recommend James K"
New Roof
New Roof
New Roof
New Roof
New Roof

+65

Response time6 hrs
Response rate96%
46 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.

Whether your homeowners insurance covers slab leak repairs depends on your specific policy and the cause of the leak. Many policies cover slab leaks resulting from a covered peril, such as a natural disaster, a falling tree, or pipes freezing and bursting within the slab. However, damage caused by invading tree roots, corrosion, or leaks from appliances may not be covered by a standard policy. It's a good idea to also check your home warranty plan for potential coverage if an appliance is the source. Contact your insurance provider for a full explanation of what your policy covers.

Homeowners insurance doesn’t usually cover a sinking foundation. While insurance will cover some kinds of foundation damage, coverage is usually limited to damage from natural disasters, fire, or impact. Foundation sinking is rarely covered by insurance, so it’s a good idea to make repairs early on to avoid costly problems in the future.

Crawl space foundation problems can stem from a few different issues, but the most common are moisture and water problems and soil instability. Moisture and water issues are often a result of poor drainage, which can lead to water intrusion and soil expansion and contraction, leaving your foundation under added stress. A few things can cause soil instability, including poor drainage, karst landscapes and resulting sinkholes, and poorly compacted soil during construction.

Yes, it is normal for a block foundation to crack. Some block foundation cracks are more serious than others and indicative of a larger structural problem. On the other hand, minor cracks may not be of immediate concern but should be monitored. Regardless, foundational cracks are not an uncommon response to wear on a structure from time and weather.

The Flanders, NJ homeowners’ guide to foundation repairs

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