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Best 5 Foundation Repair Companies in Wilmington, DE

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Written By Max Peterson|Last Updated: February 05, 2024

Wilmington gets 46 inches of rain each year, so Wilmington residents need firm foundations to secure their properties. If you see sticky doors, shifting walls, standing water, or cracks, a local foundation contractor can locate and fix the problem before it worsens. Discover Wilmington's best foundation repair companies according to our thorough research.

5 Best Foundation Repair Companies in Wilmington

Adam Basement Waterproofing Logo

Adam Basement Waterproofing

Based on 114 customer reviews.

Services Offered

InspectionMold RemediationConcreteSealingRepairMasonrySump PumpsWaterproofingCrawl Space EncapsulationRetaining Walls


  • Free quotes
  • Good customer service
  • Transparent pricing
563 Walther Rd, Newark, DE 302-565-2929 adambasement.com
DiGiacomo Construction, Inc Logo

DiGiacomo Construction

Based on 20 customer reviews.

Services Offered



  • Helps educate customers
  • Transparent pricing
  • Good customer service
1994 Concord Rd, Chester, PA 610-497-0300 digiacomo-construction.com
Dry Guys Basement Systems Logo

Dry Guys Basement Systems

Based on 327 customer reviews.

Services Offered

InspectionSump PumpsMold RemediationRepairCrawl Space EncapsulationWaterproofingGrading And LevelingRetaining Walls


  • Helps educate customers
  • Free quotes
  • Good customer service
450 N Main St, Woodstown, NJ 609-301-5556 dryguys.com
Tri-State Concrete Leveling Logo

Tri-State Concrete Leveling

Based on 18 customer reviews.

Services Offered

MasonryConcreteRepairWaterproofingRetaining WallsGrading And LevelingDrivewaysSidewalks


  • Transparent pricing
  • Good customer service
  • Helps educate customers
135 Beechtree Dr, Broomall, PA 610-795-5941 tristateconcreteleveling.com

More Local Foundation Repair Companies

Basement Systems USA

User Reviews: 4.6/5 

2092 E Old Philadelphia Rd
Elkton, MD 21921

Main Line Waterproofing

User Reviews: 4.6/5 

20 S Cedar Hollow Rd
Paoli, PA 19301

DMR Waterproofing

User Reviews: 4.7/5 

2015 Valley Hill Rd
Malvern, PA 19355

Forever Dry Basement Waterproofing, Inc

User Reviews: 4.7/5 

2159 Valley Hill Rd
Malvern, PA 19355

Desert Dry Waterproofing & Remodeling LLC

User Reviews: 4.6/5 

223 Ramblewood Dr
Sewell, NJ 08080

Basement Waterproofing Scientists

User Reviews: 4.7/5 

201 King of Prussia Rd Suite 650
Radnor, PA 19087

Morrison Custom Concrete, Inc.

User Reviews: 4.6/5 

45 Lyons Ln
Coatesville, PA 19320

Tucks Waterproofing

User Reviews: 4.7/5 

100 Evergreen Dr
Coatesville, PA 19320

Waterproofing One

User Reviews: 4.6/5 

4093 Hollow Rd
Phoenixville, PA 19460

To share feedback or ask a question about this article, send a note to our Reviews Team at reviewsteam@thisoldhousereviews.com.

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Facts about Wilmington
Average Max Temp:62°F
Average Min Temp:46°F
Average Monthly Precipitation:3.75"
Percent of Homes With Basements10%
Average Cost of Foundation Repair:$3,161
Average Cost of Foundation Waterproofing:$3,320

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Common Causes of Foundation Problems in Wilmington

Some common reasons why Wilmington homeowners suffer from foundation troubles include:

  • Standing water: Water accumulation around your home can be menacing to your foundation, especially when it collects in areas your drainage system doesn't protect.
  • Improper modifications: Landscaping or roofing work that wasn't done to standard could result in your foundation settling.
  • Soil composition: Soil with large sand or clay concentrations is highly expansive. In the heavy rainfall Wilmington receives, the soil absorbs moisture like a sponge, then releases it in dry seasons. The constant expansion and contraction stresses nearby foundations, even if the foundations keep dry.
  • Aging plumbing: Wilmington has its fair share of older homes, with a median building year of 1958. Many of these properties use cast-iron plumbing. When the pipes start eroding, leakage could reach your foundation and even pool beneath it.
  • Tree Roots: Tree roots can encroach on a home's foundation through crevices, and may create stress that causes your foundation breaking, pipes leaking, and overall structural destabilization.

How to Choose the Best Foundation Repair Company

To pick a foundation repair contractor, you should think about what's most important to you. Use this list of attributes to help you go through the process.

Licensing and Experience

In Delaware, foundation companies don't have to get a state license, but they must still register with the Delaware Department of Labor. Once a company is registered, it must follow licensing requirements in each city in its service area. We recommend consulting your local government for more information on licensing, registration, and permit requirements. Talk to team members to gain further insight into a company's experience. You should ask about local building codes, inspection processes and permit ordinances.

Another way to gauge a company's reputation is to check its website. There, you can learn how long it's been in business and its trade qualifications. It might also share insights and knowledge through blog posts, podcasts, or videos.

Customer Reviews

Before signing a contract with a company, examine its online profile with the Better Business Bureau (BBB). You can examine both positive reviews and complaints. Complaints aren't necessarily a red flag in themselves. Instead, discover how a company responds to them. If the management team consistently and proactively resolves issues, it's a good sign. However, if the company lacks accreditation, shows more negative reviews than positive ones, and doesn't communicate properly, you should avoid working with it.

Lastly, we recommend you search different websites, like Trustpilot and Google, for more opinions.

Foundation Repair Cost in Wilmington

The cost of foundation repair can differ significantly depending on the extent of the issues and what needs to be done to address them. For minor foundation cracking and settling issues, you may pay as little as $1,900. However, if there is more significant deterioration, the average cost will likely fall around $3,200. More complex jobs involving excavation, helical piers, or concrete leveling could cost $7,000 or more. Below are the average foundation repair costs for common issues.

Common Foundation Repair ServicesAverage Cost
Crack Repair$370
Leak Repair$3,003

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Frequently Asked Questions About Foundation Repair in Wilmington

What will I pay to repair my foundation in Wilmington?

You could pay about $3,200 on materials and labor for your foundation project. Ultimately, your costs will depend on your specific needs and the extent of the damage.

Can a foundation always be fixed?

If you noticed the issue through early warning signs like cracking walls, you'll likely not need a new foundation. Usually, replacement's only needed for extensive, severe damage.

Will my homeowners insurance cover foundation repair?

Sometimes. Whether you'll have coverage depends on the kind of insurance you have and why the foundation damage happened. Earthquake or flood insurance will typically cover foundation damage caused by those specific disasters. Homeowners insurance can cover damage from other disasters, but will not cover normal wear and tear. We recommend consulting your insurance agent about the extent of your policy and how to file a claim.

Are there telltale signs I should avoid a particular foundation company?

Some "red flags" indicating a foundation company to avoid include poor customer reviews, insufficient credentials, unclear pricing, pushy salespeople, inadequate warranty coverage, and poor communication.

To share feedback or ask a question about this article, send a note to our Reviews Team at reviewsteam@thisoldhousereviews.com.

More Foundation Resources

National Foundation Repair Ranking Methodology

Mold Remediation Cost Guide


U.S. Census Bureau (American Communities Survey)