Serving All of Connecticut, Westchester and Putnam Counties

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Reviews From Mahopac
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 Reliable Mahopac, NY Basement Waterproofing & Finishing Company

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

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Basement Waterproofing & Crawl Space Repair in Mahopac, New York

Do you have water in the basement? Is your crawl space damp? This leads to mold, rot, musty odors and structural issues. It also leads to a reoccurring headache for you. Luckily, our trained experts are available to permanently fix the problem.

We will properly install a hidden drainage system in your Mahopac basement and completely encapsulate your crawl space with CleanSpace vapor barrier. We are here to solve the problem for you.

Why Choose Us?
  • Lifetime Warranty on all Perimeter Waterproofing Systems
  • 25-year Warranty on Crawl Space Encapsulation Systems
  • Sump Pump Installation, Repair & Replacement
  • Basement, Crawl Space & Spray Foam Insulation
  • Basement Egress Windows
  • Crawl Space & Basement Dehumidifiers
  • Over 27 Years of Experience
  • Hundreds of Satisfied Customers

Basement Finishing & Remodeling in Mahopac, NY

Waterproofing your basement prevents outside water from coming in but what if a pipe bursts or the water heater leaks inside the home. A newly finished basement done by your average contractor will mold and rot if there is an internal leak. You'll have to tear out your new basement! We fix this issue.

Our Products Include :
  • Waterproof, washable, insulated walls           
  • Mold-Resistant, No-Sag suspended ceiling
  • Modular carpet, tile & faux wood flooring

  • Energy-efficient, double-paned basement windows
  • Attractive Sunhouse basement window wells
  • French, bifold, louvre & six-paneled steel doors
Unlike the average Mahopac contractor we use completely inorganic, waterproof materials. Even if the basement floods your walls and floors will not be damaged by the water. These waterproof products are patented and are built to create an attractive finished basement that lasts a lifetime.

Structural & Foundation Repair in Mahopac

Foundation problems destroy your Mahopac home’s value and can be dangerous. Our in-house team of structural and geo-technical engineers are here to help. We design and install the right solution and usually have the project finished in less than a week. You will have peace of mind as we provide a 25-year written warranty against defects on our foundation products.

We Fix
  • Bowing Walls
  • Sagging Floors
  • Stair-Step Cracks
  • Tilting Chimneys  
  • Foundation Cracks
  • Garage Slabs   
We Use
  • Wall Anchors
  • Slab Piers
  • I-Beam Wall Braces
  • Helical Deck Piers
  • Sticking Windows
  • Underpinning



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
Vicinity of Wood Street in Mahopac
Interested in a quote for insulating and possibly waterproofing our crawl space
Vicinity of Hillside Trail in Mahopac
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!
Vicinity of Maidstone Dr. in Mahopac
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.
Vicinity of Lake Drive in Mahopac
Basement waterproofing and/or outside drainage
Vicinity of Geymer Dr in Mahopac
Water seepage into crawl space and family room
Vicinity of Forest Road in Mahopac
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
Vicinity of Tulip Rd in Mahopac
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.
Vicinity of Breckenridge Road in Mahopac
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
Vicinity of Concord Dr in Mahopac
Small section of my basement wall is deteriorating below the soil line and is leading to water in the basement.
Vicinity of Union Valley Road in Mahopac
Sump pump not working properly....every spring water in basement...even coming up under toilet...
Vicinity of Maiden Lane in Mahopac
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.
Vicinity of ORCHARD ROAD in Mahopac
Moisture barrier in the crawl space
Vicinity of Birch Hill in Mahopac
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
Vicinity of Strawberry Fields Lane in Mahopac
Hair line crack in basement from a window corner to the floor. Water leaking in from that point as well as the well supply from the well.
Vicinity of Sycamore Terrace in Mahopac
Need estimate on leveling sagging floor in my old new england cape style house. Have the ability to get underneath to see joists, etc and set up jacks.
Vicinity of Ryan Court in Mahopac
There was a recent leak in this 2 year old house and since we are about to finish the basement space we want to look at options to prevent the new proposed finishes from getting ruined.
Vicinity of Robert Martin Blvd in Mahopac
Needs proper insulation and musty odor removed
Vicinity of Barrett Hill Rd in Mahopac
I'm interested In purchasing the house at this location if. I could get an engineer report to give to your company with pictures would it be enough for an estimate to repair the house "Settling" that has occurred.
Vicinity of Wood St in Mahopac
New home unfinished basement. future water problems?
Vicinity of Benjamin Green Lane in Mahopac
I have a musty-smelling basement. We're on the ground (not underground), but I find I need to run a noisy dehumidifier all day to keep it smelling clean downstairs. It's not leaky or particularly damp; there are no water issues. It's just constantly musty! Thanks!
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