We are the New York  Experts!

Basement Waterproofing, Crawl Space Repair, and Spray Foam Insulation in Massapequa, Huntington Station, Bay Shore, NY

Why Choose Us?

  • Fast, Professional Installations
  • A Written, Transferable Warranty
  • More Than 30 Patented Products
  • Certified, Insured Installers
  • Competent, Friendly Service
  • Free, Written Estimates
  • ... And Much More!

Complete Basement Systems is just that: a company that’s devoted to every aspect of improving basements. We are the go-to contractor in All of Long Island for basement waterproofing, basement repair, spray foam joist insulation, basement remodeling -- and we work wonders with wet crawl spaces, too! Regardless of what you’d like done with your basement, we can help.

Who We Are

Founded in 2000, Complete Basement Systems is a locally owned and operated business that is licensed, insured, and certified to do business in Hempstead, Bay Shore, Huntington Station.

In addition, we are affiliated with Basement Systems®, an international network of over 300 basement contractors. As a Basement Systems dealer, we have access to the latest waterproofing techniques and basement remodeling products – many of which are patented and proprietary. You won’t find them anywhere else.

Some of what we can do:

  • Stop water from entering through walls, floors, doors or windows
  • Fix cracks in foundation walls and basement floors
  • Get rid of damp, musty smells
  • Seal and drain a chronically wet crawl space
  • Create valuable – and dry – storage
  • Turn your basement into valuable living space

Our basement waterproofing system, for example, has a proven itself for across North America and the UK for more than 20 years. Similarly, our Clean Space® crawl space encapsulation system has been carefully engineered to create a dry, mold-free space under your home. Not only can your crawl space be used for storage when we’re done, it also makes the air in your entire home safer and healthier to breathe. Our Total Basement Finishing® system is truly exciting. It provides a way to create a beautiful living space in your basement at a fraction of what it would cost to build an addition.

Basement Waterproofing

A chronically wet basement wastes valuable space, devalues your home, and is a source of unhealthy air to the rest of the home. Complete Basement Systems combines interior drains with sump pumps to keep ground water from reaching floor level. The drains, designed by Basement Systems, rest on or beside the foundation footing and under the floor. Called WaterGuard®, they are nearly invisible once we have finished the job. The sump pumps are designed for fail-safe operation. If the primary pump in Basement Systems’ TripleSafe® sump pump system fails, a secondary pump automatically takes over. If a power outage puts the primary and/or secondary pump out of action, a battery-powered backup pump takes over.

Crawl Space Repair

A damp or wet crawl may not seem like a big deal, but it is. Moisture is the key ingredient to making the crawl space a perfect place for mold to thrive. Mold spores can then easily circulate through floors and walls to enter living spaces above – where they add to the misery of being and allergy or asthma sufferer. In addition, moisture, over time, can cause the beams, posts, and joists that support your home to rot. Don’t wait until the cost to make structural repairs becomes too great. Call us now for a free inspection and estimate.

Complete Basement Systems of NY provides crawl space repair, spray foam insulation, sump pump installation, basement finishing, and basement waterproofing in Massapequa, Huntington Station, Bay Shore, Hempstead, Valley Stream, Brentwood, Lindenhurst, Freeport, Levittown, Westbury, Patchogue, Huntington, Elmont, West Babylon, Great Neck, New Hyde Park, Long Beach, Hicksville, Merrick, Bellmore, Rockville Centre, Massapequa Park, Woodmere, and the surrounding areas in New York.

Looking for a price? Get a no cost, no obligation free estimate.

Serving New York
Including All of Long Island
Our New York Service Area
Cities in Nassau County, NY
Albertson
Atlantic Beach
Baldwin
Bayville
Bellerose Village
Bellmore
Bethpage
Carle Place
Cedarhurst
East Meadow
East Norwich
East Rockaway
Elmont
Farmingdale
Floral Park
Franklin Square
Freeport
Garden City
Glen Cove
Glen Head
Glenwood Landing
Great Neck
Greenvale
Hempstead
Hewlett
Hicksville
Inwood
Island Park
Jericho
Lawrence
Levittown
Locust Valley
Long Beach
Lynbrook
Malverne
Manhasset
Massapequa
Massapequa Park
Merrick
Mill Neck
Mineola
New Hyde Park
Oceanside
Old Bethpage
Old Westbury
Oyster Bay
Plainview
Port Washington
Rockville Centre
Roosevelt
Roslyn
Roslyn Heights
Sea Cliff
Seaford
South Floral Park
Syosset
Uniondale
Valley Stream
Wantagh
West Hempstead
Westbury
Williston Park
Woodbury
Woodmere

Cities in Suffolk County, NY
Amagansett
Amityville
Aquebogue
Babylon
Bay Shore
Bayport
Bellport
Blue Point
Bohemia
Brentwood
Bridgehampton
Brightwaters
Brookhaven
Calverton
Center Moriches
Centereach
Centerport
Central Islip
Cold Spring Harbor
Commack
Copiague
Coram
Cutchogue
Deer Park
East Hampton
East Islip
East Marion
East Moriches
East Northport
East Quogue
East Setauket
Eastport
Farmingville
Great River
Greenlawn
Greenport
Hampton Bays
Hauppauge
Holbrook
Holtsville
Huntington
Huntington Station
Islandia
Islip
Islip Terrace
Jamesport
Kings Park
Lake Grove
Laurel
Lindenhurst
Manorville
Mastic
Mastic Beach
Mattituck
Medford
Melville
Middle Island
Miller Place
Montauk
Moriches
Mount Sinai
Nesconset
New Suffolk
North Babylon
Northport
Oakdale
Ocean Beach
Orient
Patchogue
Peconic
Port Jefferson
Port Jefferson Station
Quogue
Remsenburg
Ridge
Riverhead
Rocky Point
Ronkonkoma
Sag Harbor
Sagaponack
Saint James
Sayville
Selden
Shelter Island
Shelter Island Heights
Shirley
Shoreham
Smithtown
Sound Beach
South Jamesport
Southampton
Southold
Speonk
Stony Brook
Upton
Wading River
Wainscott
Water Mill
West Babylon
West Islip
West Sayville
Westhampton
Westhampton Beach
Wyandanch
Yaphank

Please call us at: 1-516-740-2702
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