Serving Connecticut, Westchester and Putnam Counties

Contact Us For
A Free Estimate!
Products & Services
Basement Waterproofing Services & Products
WaterGuard Interior System
DryTrak Drainage Channel
TrenchDrain Drain Grate
IceGuard Discharge Line
FlexiSpan Wall Crack Repair
Polyurethane Crack Sealing
WellDuct Window Drainage
BrightWall Waterproof Panels
ThermalDry Wall Barrier
Basement To Beautiful Pre-finishing Wall Insulation Panels
Drain Tile Installation
SuperSump Pump System
TripleSafe Pumping System
UltraSump Battery Back Up
Sanidry Basement Dehumidifier
French Drain Alternatives


Crawl Space Repair Services & Products
CleanSpace Encapsulation Vapor Barriers And Liners
Turtl Access Hatch
EverLast Crawl Space Doors
Sanidry Csb Crawl Space Dehumidifier
SmartDrain Water Drainage
SilverGlo Wall Insulation
TerraBlock Floor Insulation
SmartSump Sump Pump
Crawl-o-Sphere Crawl Space Fan
WallCap Block Wall Sealer
SmartVent Flood Vents


Foundation Repair Services & Products
Push Pier Underpinning For Settlement, Foundation Leveling, Sinking Foundation Repair
Geo-lock Wall Anchors
Geo-lock Helical Anchors
PowerBrace Bowed Wall Repair
CarbonArmor Fiber Wall Repair
SmartJack Crawl Space Support
Slab Pier Repair
Foundation Underpinning
EZ Post Deck Repair
Shotcrete Wall Restoration


Basement Finishing & Remodeling
Everlast Wall Panels
Insulated Wall Panels
Premier And Linen Ceiling Tiles: No-sag Warranty
Thermal Dry Floor Tiles
ThermalDry® Elite Plank Flooring
Sunhouse Window Wells
Everlast Window Replacement
Rockwell Basement Egress Windows


Company Awards
2017 Angie's List Super Service Award
Connecticut Basement Systems has been awarded the 2017 Angie's List Super Service Award®! The Angie’s List Super Service Award honors... [Read more]
Larry Janesky award the Valley of Chamber of Commerce's Silver Medal Award
Larry Janesky was awarded the Valley Chamber of Commerce's Silver Medal Award for the Big Build at Ansonia Nature Center!... [Read more]
Best Places to Work
For the 3rd time, Basement Systems has won the Best Places to Work award for being one of the best... [Read more]
More Awards

Residential Crawl Space Vapor Barrier & Basement Waterproofing in Ansonia, CT

While all the workers were efficient and friendly, there was one employee, Ailton Dos Santos, who made it all possible. We...
Happy Customers Surrounding Ansonia, CT
Work Requests

Click the icons to see what our customers had to say.

Reviews From Ansonia
Testimonials From Ansonia
The installment crew did a great job. Even the clean up was great... I have recommended you to several of my...
Testimonial by Carmela C. from Ansonia, CT
...I wanted the best, so I went to the best. My grandparents built the house in 1930. They always kept it...
Testimonial by Thomas W. from Ansonia, CT
...The crew was the best I have ever had doing anything around my home. They were professional, courteous,...
Testimonial by Henriette H. from Ansonia, CT

Ansonia, CT's expert in basement waterproofing, foundation repair, & more

Connecticut Basement Systems has been your trusted home improvement company providing reliable basement waterproofing, foundation repair, crawl space encapsulation, basement finishing, and more to over 85,000 Connecticut homeowners since 1987. As a three-time winner of the CT Better Business Bureau's Torch Award for Marketplace Ethics, we are committed to creating an honest and reliable experience with our customers.

Whether you need a moisture-proof basement waterproofing system complete with a sump pump or permanent foundation settlement repairs, we provide these solutions and much more!

Our services in Ansonia:

  • Basement waterproofing
  • Foundation repair
  • Crawl space repair
  • Basement finishing
  • Air purifiers
  • And more!

Schedule a free estimate to learn more. Connecticut Basement Systems proudly serves Ansonia and areas nearby!

Trusted basement waterproofing company serving Ansonia

A wet basement can affect your home more than you think. If left to worsen, water in the basement can cause structural issues, mold growth, pest problems, and more. That is why Connecticut Basement Systems provides patented basement waterproofing solutions, designed to keep your below-grade space dry and healthy for years to come! So, if you're tired of dealing with basement flooding, high humidity, water in basement, or other waterproofing issues, contact our experts today!

Our basement waterproofing services in Ansonia:

  • Sump pump installation & maintenance
  • Basement drainage systems
  • Basement Dehumidifiers
  • Basement windows
  • Egress windows & window wells
  • And more!

Since 1987, we have provided warrantied basement waterproofing solutions to Ansonia homeowners - this includes sump pumps, basement dehumidifiers, french drains, and more. Schedule a free basement waterproofing estimate to learn more!

Transform your home with basement finishing in Ansonia

Want to transform your dreary basement into the space of your dreams? From a lavish apartment to a new play area for the kids, Connecticut Basement Systems can help you with these remodeling projects and more - the only limit is your imagination! Unlike other basement finishing contractors, we actually use remodeling products designed to withstand common environmental conditions in the below-grade space, including moisture and mold. Plus, the basement finishing system is warrantied, has insulating qualities, dampens noise, and is eco-friendly.

Our basement finishing system in Ansonia:

  • Finished basement flooring
  • Waterproof wall products
  • Ceiling tiles
  • Basement dehumidifiers
  • Replacement windows
  • Egress windows & window wells
  • And more!

Schedule a free basement finishing estimate to learn more. We proudly serve Ansonia and areas nearby.

Permanent foundation repair solutions in Ansonia

No matter how minor your home's foundation problem seems, it is always better to schedule a foundation inspection and get repairs sooner than later. That is because issues like foundation settlement, leaning chimneys, bowing walls, and more can affect your house's value and curb appeal. Even worse, they can create unsafe living conditions for you and your family.

But there is no reason to worry - Connecticut Basement Systems is backed by Supportworks, a nationally renowned network of expert foundation repair contractors. This partnership also gives us exclusive access to professional training, warrantied solutions, and best practices proven by hundreds of dealers across the globe.

Our foundation repair services in Ansonia:

  • Slab piers
  • Push piers
  • Helical piers
  • Foundation wall repairs
  • Crawl space support jacks
  • Wall anchors
  • Wall reinforcing systems
  • And more!

Schedule a free foundation repair estimate to learn more. We proudly serve Ansonia and areas nearby.

Reliable crawl repair & encapsulation services in Ansonia

A nasty crawl space can cause a lot of issues for the home. If left unrepaired and unsealed, the crawl space can start to rot and grow mold, leading to structural issues, unhealthy indoor air, and discomfort throughout the house. That is why Connecticut Basement Systems provides moisture-proof crawl space encapsulations and durable structural repairs.

When we seal the crawl space using a moisture-proof vapor barrier, add a high-performance crawl space dehumidifier, install crawl space jacks for failing support posts, and provide other crawl space repair solutions, we can create a dry, secure below-grade space for years to come!

Our crawl space encapsulation & repair services in Ansonia:

  • Crawl space vapor barrier
  • Crawl space drainage system
  • Crawl space dehumidifier
  • Crawl space insulation
  • Crawl space support jacks
  • And more!

Schedule a free crawl space repair and encapsulation estimate to learn more. We proudly serve Ansonia and areas nearby.

Quality basement waterproofing, crawl space repairs, & more since 1987

Connecticut Basement Systems is the largest basement waterproofing, foundation repair, crawl space encapsulation, and basement finishing company in Ansonia - and for good reason. We are committed to improving the lives of our employees, customers, and the world through education and development. For over 30 years, we have built a solid reputation backed by honesty and expertise. So you can have absolute confidence in our services!

Contact us to schedule a free estimate today. We proudly serve Ansonia and nearby areas.

Press Releases From Ansonia
Connecticut Basement Systems provides school supplies for Ansonia elementary kids who live below the...
Connecticut Basement Systems provides school supplies for Ansonia elementary kids who live below the poverty line.... [Read more]
News & Events from Ansonia
Back to School Donations 2022
Our teams worked hard to pull together a plethora of new school supplies to donate to Valley Save Our Youth and Naugatuck Valley Health District's Back to School Rally and Supply Drive!... [Read more]
Holiday Giving Week 2020 at Connecticut Basement Systems
You know what time it is -- Holiday Giving Week at CTBS is back again!... [Read more]
Smile with Santa
Come smile with Santa and Basement Systems! ... [Read more]
Work Requests From Ansonia, CT
Project Location: Ansonia, CT
My basement is flooding with water and would like to get this problem fixed.
Project Location: Ansonia, CT
I would like to finish my basement. I wanted to get an estimate
Project Location: Ansonia, CT
Basement floor is crumbling, floor keep being wet and one side looks like no cement.
Project Location: Ansonia, CT
Water is seeping in through the walls (rocks) in the basement. It is getting worse as it rains. There is now damage to the concrete floor.
Project Location: Ansonia, CT
I have a retaining wall in my backyard that was damaged by my neighbors tree and needs repair.
Project Location: Ansonia, CT
I wanted an estimate on waterproofing my basement and other general questions.
Project Location: Ansonia, CT
House built in the 50's. Basement somewhat finished and being used as living space. Starting to feel damp and musty.
Project Location: Ansonia, CT
Water coming up in garage drain when heavy.
Project Location: Ansonia, CT
Project Location: Ansonia, CT
We are looking for estimates to finish our currently unfinished basement. We would like to add a bathroom as well.
Project Location: Ansonia, CT
We receive your flyer at our current apartment we live in. We are closing on are home on 8/22/22. We wanted to schedule an appointment on 8/23/22 to get a free estimate to complete our unfinish basement. We would like to turn the basement to a open family space and one area of the base to be turn into a bedroom. We do have a Bilco door in the basement.
Project Location: Ansonia, CT
Finish basement.
Project Location: Ansonia, CT
Ready to remodel basement & Garage for more space for growing family. I also plan on pulling equity from home afterwards to repay/pay off construction costs.
Project Location: Ansonia, CT
Leak in basement on heavy rain only
Project Location: Ansonia, CT
I have a finished basement, and I seem to have a minor leak in the back wall of the house. There is a crack that you can see in the foundation from the outside of the house. I wanted someone to look at it and give me an estimate for the repairs.
Project Location: Ansonia, CT
Crawl space water damage
Project Location: Ansonia, CT
One section of our basement foundation seems to be seeping moisture. There are no puddles, but boxes on the floor are damp.
Project Location: Ansonia, CT
Horizontal crack approx. 18 feet in length can upload photos.
Project Location: Ansonia, CT
Water comes in from sidewalk into basement and I think it's because of foundation
Project Location: Ansonia, CT
Looking to have an egress window installed in my basement