Top-rated basement waterproofing pros.

Best basement waterproofing pros near Ansonia, CT

Enter your zip and get matched with up to 5 pros

TRUSTED BY ANSONIA, CT HOMEOWNERS

  • Average homeowner rating star icon4.8
    Average homeowner rating
  • Verified reviews icon65
    Verified basement waterproofing services reviews

Top-Rated Basement waterproofing pros in Ansonia - Updated Nov 2026

Avatar for American Dry Basement Systems, LLC
American Dry Basement Systems, LLC
4.9(
118
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Ansonia, CT and surrounding areas

Approved

In business since 1997

Free estimates

Credit card accepted

"I had a great experience with American Dry Basements. From start to finish, their team was professional, knowledgeable, and easy to work with. They took the time to explain everything clearly and made sure the job was done right the first time. What really stood out to me was their fair and affordable pricing—no surprises, just honest work at a reasonable cost. It’s not always easy to find a company that combines quality service with good value, but they definitely delivered on both. If you’re looking for reliable basement waterproofing with a team you can trust, I highly recommend giving them a call."
Drainage Trench
Jackhammer
Mixing SuperCrete
Compress Wash Stones
Spreading SuperCrete

+7

Response time11 hrs
3 neighbors recently requested a quote
Recommended by66%of homeowners
Avatar for Groundworks
Groundworks
4.9(
13
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Ansonia, CT and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 2025

Free estimates

Warranties offered

Groundworks is the North America's leading and fastest-growing foundation repair and water management solutions provider. Groundworks is a vertically integrated company with its own manufacturing operations and a world-class software solution, allowing us to serve our customers more effectively. From the first phone call to the annual maintenance offered, our customers have peace of mind knowing we're there with one mission to repair, protect and improve their home. For state licenses visit Groundworks.com/licensing

Foundation
Foundation
Foundation
Concrete
Concrete

+16

430 neighbors recently requested a quote
Avatar for AA Outdoor Services, LLC
AA Outdoor Services, LLC
3.9(
33
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Ansonia, CT and surrounding areas

Approved

In business since 1990

Free estimates

Small jobs welcome

"Vincent did an absolutely beautiful job on my cement and asphalt driveway. Their craftsmanship was top-notch. They finished the job quickly, and left the work area clean when they were not there. They stayed in touch throughout the process, and they take tremendous pride in their work. I have worked with hundreds of contractors over the years and these folks are among the very best and most reliable. Cannot say enough good things, also the prices were competitive, and they delivered a better quality of work than I would expect for a similar price."
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
Avatar for Solid Ground Solutions LLC
Solid Ground Solutions LLC
5.0(
7
)
Basement Drainage Channels - Install

Serving Ansonia, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Emergency services offered

"Nick helped me with a ground based solar project. He dug an electrical trench and laid the conduit. The town inspected and signed off on his work. Great communication, fair price, and precise execution of the work."
Response time8 hrs
Response rate96%
11 neighbors recently requested a quote
Avatar for Solid Ground Solutions LLC
Solid Ground Solutions LLC
5.0(
7
)
Basement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Ansonia, CT and surrounding areas

Approved

In business since 2025

Free estimates

Offers commercial services

Solid Ground Solutions LLC is a BBB Accredited business with an A+ rating, proudly serving residential and commercial customers with professional excavation, grading, and land clearing services. Backed by nearly 20 years of industry experience, we are committed to delivering quality workmanship, long-lasting results, and dependable service on every project. \n \nWe take pride in our honest communication, fair pricing, and local, customer-first approach. Whether you're preparing a site for new construction, improving drainage, or clearing land for development, you can count on our team to get the job done right. \n \nCall Nick at (203) 437-0237 today for a complimentary estimate and experience the Solid Ground Solutions difference.

Avatar for Sound Side Construction, LLC
Sound Side Construction, LLC
4.8(
6
)
Basement Drainage Channels - Install

Serving Ansonia, CT and surrounding areas

Approved

In business since 2018

Free estimates

Offers commercial services

Sound Side Construction, LLC, is your one stop shop for all your marine construction and excavation needs. We pride ourselves in going above and beyond for our customers. We take great pride in our work with focus on detail. No project is to big or to small. Give us a call today for your next home improvement project. Due to us being a small business, you will receive the personalized customer service you want along with excellent service and updates as we work with you to get your job done. We will provide high quality work along with great communication to ensure that you are getting exactly what you wish to provide the best possible experience!\n\n

Gallery
Gallery
Gallery
Recommended by66%of homeowners
...
Showing 1-10 of 112
Basement Waterproofing FAQs, answered by experts

A crawl space can be as little as 42 inches below the grade of your house, but this is not always recommended in flood-prone areas. At a minimum, there must be at least 16 inches of clearance between the ground and the floor joists to access the space in an emergency.

Typically, waterproofing a basement should last up to 10 years. However, it’s worth noting that with proper maintenance and depending on the waterproofing method and installation quality, you can probably squeeze another decade out of it.

To maintain an outdoor structure, perform regular inspections for damage, leaks, and weak joints. Clean the structure regularly, treat or repaint wood surfaces for weather resistance, and reinforce any weak joints to prevent deterioration and ensure its longevity.

You should always hire a structural engineer or a professional and licensed foundation repair company for crawl space repair. These professionals will often be able to treat the symptoms of the issue as well as the underlying problem so that you don’t have ongoing damage. They’ll also often take preventative measures to stop the issue from recurring in the future.

If you notice standing water under the deck after rainstorms, you may need a drainage system to efficiently move this water. You do not want standing water to rest against your foundation or against support posts for the deck, as this could cause significant structural problems over time. Make sure the area has proper grading, too.

The Ansonia, CT homeowners’ guide to basement waterproofing services

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