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  • Average homeowner rating star icon3.8
    Average homeowner rating
  • Verified reviews icon18
    Verified foundation repairs reviews

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

Avatar for American Waterworks
American Waterworks
4.5(
173
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationConcrete Foundation - RepairConcrete Foundation - Raise+1 more

Serving Mandan, ND and surrounding areas

Approved

In business since 1989

Free estimates

Warranties offered

"I had a great experience from start to finish. I had four different foundation companies look at the large crack in my foundation. Two said to put epoxy in it and I would be good. The third offered a slightly more involved fix that would not address the root of the problem. American Waterworks was different from the start. First of all, they book a three hour appointment so they can fully investigate, measure and explain exactly what is happening and what needs to be done to truly fix the problem. The level of knowledge and expertise shown by the the Design Specialist, Chuck, was astounding. He even predicted that there would be at least one if not two more cracks in the foundation we could not see and their location and he was right on both counts. I ended up needing 10 helical piers and 7 helical anchors to repair the foundation and stop it from rotating backwards toward the hill and to stabilize and lift the foundation back to its original position. The three man installation crew was incredible. Jose the Foreman, Luis the Co-Foreman, and Jose the Production Specialist were extremely hard working, knowledgeable and always willing to take time to answer any questions I had about the project. Their level of professionalism, courtesy and attention to detail put me at ease during such a major undertaking and I always knew my house was in good hands. I can not recommend American Waterworks enough to anyone needing their foundation repaired."
Another Sinking Floor
Dirt Crawlspace in Elk Mound, WI
Concrete stoop had sunk over 6 inches
Foundation Failure Signs
Increased Efficiency of Crawlspace in Elk Mound

+156

Response time4 hrs
499 neighbors recently requested a quote
Recommended by91%of homeowners
ANDERSON YARD WORKS LLC
New to Angi
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationFoundation Drainage - Install or Replace

Serving Mandan, ND and surrounding areas

Approved

In business since 2017

Free estimates

Credit card accepted

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of General Contractor services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction! \n

9 neighbors recently requested a quote
Quality Vision Concrete and Construction
5.0(
2
)
Concrete Foundation - RaiseConcrete Foundation - RepairPoured Concrete Wall - Repair

Serving Mandan, ND and surrounding areas

In business since 2017

Free estimates

Credit card accepted

Quality Vision Concrete and Construction, services North Dakota out of Bismarck. We pride ourselves on the dedication we have to all of our customers and the quality of work that we provide. Give us a call today! We look forward to working with you!

Recommended by100%of homeowners
Avatar for Hampton Enterprise LLC
Hampton Enterprise LLC
3.7(
9
)
Foundation Drainage - Install or ReplaceFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Mandan, ND and surrounding areas

In business since 1989

Free estimates

Emergency services offered

"He was awesome.  He called back, but he was working in Reed field, North Carolina and he could not get to us for a couple of days.  By the time, he got to us we had already gotten the other estimates, and we were pleased with him.  Hampton guy was great.  He was really quick to get back to us, but he had other projects that he had already lined up.  The experience was very satisfactory.  He was very courteous, and prompt.  He was very honest in saying that he cannot get to us, and if we needed to have this work done now, then we need to have to get somebody else.  I appreciated that."
Additional Photos
Additional Photos
Recommended by60%of homeowners
Avatar for Roberto Garibay Construction
Roberto Garibay Construction
New to Angi
Concrete Foundation - RaiseConcrete Foundation - RepairPoured Concrete Wall - Repair

Serving Mandan, ND and surrounding areas

In business since 2003

Offers commercial services

We are a locally owned and operated company. We value honesty and integrity in all aspects of our business. We offer a variety of home improvement services that are customized to each individual project. We pride ourselves on the quality of our work, as well as our commitment to outstanding results. We look forward to building lasting relationships with our clients and guarantee your satisfaction!

Response time1 day
Avatar for Avila's Construction, LLC
Avila's Construction, LLC
New to Angi
Concrete Foundation - Raise

Serving Mandan, ND and surrounding areas

In business since 2015

Free estimates

We are a locally owned and operated company with years of industry experience. We value honesty and integrity in all aspects of our business. We offer a variety of home improvement services that are customizable to each individual project, and specialize in handyman, carpentry work, window, door installation, and a variety of other projects. We pride ourselves on the quality of our work, as well as our commitment to outstanding results. We look forward to building lasting relationships with our clients, and guarantee your satisfaction!

Demo
Demo
Demo
Demo
Demo

+36

Response time1 day
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Foundation Repair FAQs, answered by experts

Foundation settlement should be a concern if you notice it happening suddenly and years after construction, if the settlement results in signs of structural damage in your home, or if it happens after a flood, nearby sinkhole, or earthquake. Some signs of severe foundation settlement that should prompt you to call a repair specialist include sloping or uneven floors, large cracks in your foundation, moisture issues or pest infestation in your basement or crawl space, and an uneven roofline.

Yes, slab leaks are fairly common, especially in older homes and places that are prone to earthquakes which can move home foundations.

It’s crucial to hire a foundation company that’s professional, experienced, and reliable, starting by choosing local experts with at least five to ten years of experience with your type of project. Local foundation companies will understand the soil and weather conditions in your area and can carry out the best solution based on your property characteristics. You should ask for a list of customer references, read through online reviews, and check for customer complaints and unresolved issues filed with the Better Business Bureau (BBB) before hiring.

If you don’t have any access to or knowledge of any area underneath your home, chances are it’s built slab-on-grade. You can also look for the concrete around the bottom edge of your structure; if it’s just a few inches tall, it’s likely a slab. If it’s more than that, has any windows, or you have steps leading to your main entrance, you likely have a different foundation style.

A leak under your foundation from a water supply line or sewage line is likely to lead to water pooling on certain areas of your property during rainfall, abnormally fast-growing or green grass in certain sections of your lawn, and differential settlement of your foundation, which can result in large foundation cracks, windows and doors failing to operate properly, a wavy or sloping roofline, or damages or irregularities in your interior walls, including cracks and bulging. If it’s a plumbing line embedded in your slab, you’ll also likely notice above-average water bills.

The Mandan, ND homeowners’ guide to foundation repairs

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