Family-owned and operated since 2000, Complete Basement Systems (CBS) is proud to be Long Island’s longest-standing basement and crawl space repair company. For more than 25 years, we’ve helped homeowners protect their most valuable investment by preventing water and humidity damage. Our consultative approach sets us apart—we don’t just fix problems, we educate homeowners and deliver tailored solutions designed for lasting peace of mind.
Founded in 1984, PTS Foundation Supply (PTSFS) has been the Northeast’s go-to resource for helical piles, driven anchors, and installation equipment. From design to installation, we know how complex foundation projects can be. That’s why professionals across the region count on our 100+ years of collective experience to provide reliable products, expert insight, and a partnership that helps every project start—and finish—on solid ground.
Since 1973, Premium Technical Services (PTS) has been the Tri-State area’s trusted partner in foundation repair, below-grade waterproofing, and grouting. With more than 50 years of service and over 100 years of combined expertise on our team, we bring proven solutions to keep your foundation strong, dry, and secure for the long run.
Family-owned and operated since 2000, Complete Basement Systems (CBS) is proud to be Long Island’s longest-standing basement and crawl space repair company. For more than 25 years, we’ve helped homeowners protect their most valuable investment by preventing water and humidity damage. Our consultative approach sets us apart—we don’t just fix problems, we educate homeowners and deliver tailored solutions designed for lasting peace of mind.
Founded in 1984, PTS Foundation Supply (PTSFS) has been the Northeast’s go-to resource for helical piles, driven anchors, and installation equipment. From design to installation, we know how complex foundation projects can be. That’s why professionals across the region count on our 100+ years of collective experience to provide reliable products, expert insight, and a partnership that helps every project start—and finish—on solid ground.
Complete Basement Systems: Residential Foundation & Waterproofing Experts
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Complete Basement Systems has long been the residential division of Premium Technical Services, helping homeowners across Nassau and Suffolk Counties on Long Island protect their properties from water intrusion, foundation damage, and moisture-related problems.
For years, Complete Basement Systems has built its reputation by delivering reliable basement waterproofing, crawl space repair, and foundation stabilization services designed specifically for residential structures. Homeowners throughout Long Island trust the team to identify structural issues early and implement solutions that protect both property value and long-term structural integrity.
Today, Complete Basement Systems continues to operate as the homeowner-focused service division within Premium Technical Services, combining local expertise with decades of foundation repair experience across the Northeast.
Residential Foundation Repair and Waterproofing Services
Complete Basement Systems focuses on residential and light commercial projects in Long Island, providing solutions designed to prevent further damage and protect homes from moisture and structural deterioration.
Services include:
- Foundation crack repair and structural stabilization
- Basement waterproofing systems and drainage installation
- Crawl space repair and encapsulation
- Interior drainage systems and sump pump installation
- Carbon fiber reinforcement for bowing basement walls
- Dehumidifier installation for basement humidity control
- Window wells and basement window upgrades
- Spray foam insulation for crawl spaces and basements
Each project begins with a detailed inspection so the team can recommend the best long-term solution for the home.
Local Expertise for Long Island Homes
Homes throughout Nassau and Suffolk Counties face unique foundation challenges due to soil conditions, coastal moisture, and aging construction. Complete Basement Systems understands these regional factors and provides customized repair solutions designed for Long Island properties.
From small basement leaks to larger structural concerns such as cracked foundation walls or bowing basement walls, the team focuses on solving the underlying issue rather than providing temporary fixes.
This local expertise allows homeowners to address problems early and avoid costly structural repairs later.
Part of the Premium Technical Services Network
Complete Basement Systems now operates alongside Premium Technical Services, which handles large-scale commercial and engineered foundation repair projects throughout New York City and the surrounding metro area.
This partnership allows homeowners to benefit from decades of technical expertise and engineering-backed solutions while still receiving the personalized service that Long Island homeowners have relied on for years.
While Complete Basement Systems focuses on residential repairs and waterproofing, Premium Technical Services supports commercial buildings, industrial facilities, and complex structural repair projects across the region.
Frequently Asked Questions
Common warning signs include water stains on basement walls, musty odors, visible foundation cracks, or damp floors. These symptoms may indicate water intrusion that can lead to mold growth and structural damage if left untreated.
Foundation problems often appear as wall cracks, bowing basement walls, uneven floors, or sticking doors and windows. A professional inspection can determine whether stabilization or crack repair is needed.
Yes. Complete Basement Systems serves homeowners throughout Nassau and Suffolk Counties, providing foundation repair and waterproofing services tailored to local soil and climate conditions.
When installed correctly, modern waterproofing systems can provide long-lasting protection. Drainage systems, sump pumps, and moisture barriers help prevent water intrusion and protect the home’s structure.
Schedule a Foundation Inspection Today
If you are noticing foundation cracks, basement leaks, or moisture issues, the team at Complete Basement Systems is ready to help.
Our experts will inspect your property, identify the source of the problem, and recommend reliable repair solutions designed to protect your home for years to come.
Contact Complete Basement Systems today to schedule a consultation and receive a free estimate for foundation repair or waterproofing services in Long Island. Give us a call at (516) 409-6000 or fill out our online form.