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
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

Your Local Mahopac, NY Foundation Repair & Basement Waterproofing Experts

From day one they were professional and courteous. Connecticut Basement Systems comes highly recommended....
Happy Customers Surrounding Mahopac, NY
Work Requests

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

Reviews From Mahopac
Testimonials From Mahopac
George had a huge smile on his face when I opened the door! He was delightful.
Testimonial by Lillian M. from Mahopac, NY
Steve Cogswell was great! Very friendly and professional!
Testimonial by Lillin M. from Mahopac, NY
BJ was excellent! A gentleman, and was marvelous! He did a great job!
Testimonial by Frank I. from Mahopac, NY

Mahopac, NY'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 New York 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 Mahopac:

  • 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 Mahopac and areas nearby!

Trusted basement waterproofing company serving Mahopac

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 Mahopac:

  • 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 Mahopac homeowners - this includes sump pumps, basement dehumidifiers, french drains, and more. Schedule a free basement waterproofing estimate to learn more!

Permanent foundation repair solutions in Mahopac

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 Mahopac:

  • 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 Mahopac and areas nearby.

Reliable crawl repair & encapsulation services in Mahopac

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 Mahopac:

  • 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 Mahopac and areas nearby.

Transform your home with basement finishing in Mahopac

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 Mahopac:

  • 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 Mahopac 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 Mahopac - 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 Mahopac and nearby areas.

Job Stories From Mahopac, NY
Waterproofing Installation in Mahopac, NY

In this Mahopac, NY home, the basement was cold, uninviting, and suffering from mold and mildew damage. The family living in this home wanted a change fast, so they gave us at Connecticut Basement Systems a call to come and fix it!

Marcio Bahiense and his team came over, and they quickly got to work! First, a TrenchDrain and WaterGuard were installed. These two products are installed on the interior perimeter of the basement; the TrenchDrain on the entry way, and the WaterGuard around the perimeter of the basement. These products collect water from the stairs and walls, and lead directly to a TripleSafe sump pump. The TripleSafe sump pump is a not just a single pump, it is a sump pump system. It comes with one pump that can pump up to 2,600 gallons per hour, and the second, which allows it to pump up to 6,200 gallons. The third is a back-up battery, which is only turned on when the other two stop working. This allows the pumps to pump up to 11,000 gallons! With these three products, this basement will never have to worry about a flood EVER again.

Want to protect your home from water? Give us a call today for your FREE estimate!

Work Requests From Mahopac, NY
Project Location: Mahopac, NY
Just want a quote on basement floors
Project Location: Mahopac, NY
This person has filled out the Star Power Pro survey on that you sent them and is interested in another service you provide: Crawl Space Repair. Please contact them to schedule a new appointment for this service. This is a no-charge lead.
Project Location: Mahopac, NY
Multiple issues. Excess water in crawl space, damage in area water damage,etc
Project Location: Mahopac, NY
Insulate basement
Project Location: Mahopac, NY
I'd like to get a quote to install a drop ceiling in my basement.
Project Location: Mahopac, NY
Basement Foundation repair
Project Location: Mahopac, NY
Would like a price for waterproofing basement / crawl space
Project Location: Mahopac, NY
Interested in a quote for insulating and possibly waterproofing our crawl space
Project Location: Mahopac, NY
We have poor drainage around the exterior of our home and were told we have some mold in the crawlspace area. We were advised to install new insulation in the crawlspace. In addition, we have to install some drainage along the exterior of our home to eliminate the issue!
Project Location: Mahopac, NY
Water coming in to finished basement. Signs of moisture on the crawl space walls, spots of water coming up from the ground in crawl space, happens when it rains and snows. Water collecting under the stairs and can be seen from inside the crawl space.
Project Location: Mahopac, NY
Basement waterproofing and/or outside drainage
Project Location: Mahopac, NY
Water seepage into crawl space and family room
Project Location: Mahopac, NY
Our crawl place is filled with water. Even with using sump pump. The space is so low one cannot walk into it. It is caud My mold and other damage
Project Location: Mahopac, NY
Good Morning, We are in the motions of purchasing a home and we did the Home inspection and there is a crack in the foundation structure in the back of the house. I would like to schedule please someone to come out asap to give me a price on home much this will cost me to fix it. I would like to have it fixed before moving in.
Project Location: Mahopac, NY
You previously fixed our basement. We now have one area that is leaking water that was not fixed in the first round and I have been told it needs a sump pump. We would like to get an estimate and an idea of the fixing of the problem. Thank you, Dr. Hardy
Project Location: Mahopac, NY
Small section of my basement wall is deteriorating below the soil line and is leading to water in the basement.
Project Location: Mahopac, NY
Sump pump not working properly....every spring water in basement...even coming up under toilet...
Project Location: Mahopac, NY
I am a potential home buyer and in the house I'm looking to buy there is water in the basement. I was interested in having a specialist give me an estimate of how much it would cost to fix the water issue in the basement.
Project Location: Mahopac, NY
Moisture barrier in the crawl space
Project Location: Mahopac, NY
I would like to waterproof my basement as soon as possible, water is seeking in from the rock foundation. I own this house as of 1990