Complete Basement Systems

What They Do

Water Damage

• Annual Maintenance
• Basement Dry
• Basement Egress Window
• Basement Flooding
• Basement Floor
• Basement Systems
• Basement Walls
• Basement Waterproofing Solutions
• Basement Window Replacement
• Battery Backup
• Bowing Walls
• Carbon Fiber Strapping
• Crack Injection
• Crawl Space Clean
• Crawl Space Doors
• Crawl Space Dry
• Crawl Space Encapsulation
• Crawl Space Foundation Repair
• Crawl Space Problems
• Customized Solutions
• Exterior Drainage Systems
• Foundation Cracks
• Foundation Issues
• Foundation Reinforcement
• Foundation Walls
• Foundation Waterproofing
• Free Estimate
• Free Quote

In Their Own Words

Providing Basement Waterproofing, Crawl Space Repair & Foundation Repair For Long Island, New York

Written by the business on its public profile. We have not verified these claims.

Before You Call Complete Basement Systems

1. Do you take moisture readings every day and will you give me the drying log?
2. Are your technicians certified in water damage restoration?

For mold jobs over 10 square feet, ask for a New York State licensed mold remediator and a separately licensed mold assessor, plus the Nassau or Suffolk County home improvement license. Also ask for proof of insurance and industry certification for the restoration crew.

How Their Reviews Break Down

Counts from public listings as of September 23, 2026. A handful of reviews says less than a few hundred.

Read This While You Wait

• DIY with careWhat to Do in the First 24 Hours After Water DamageAn hour by hour plan for the first day after water damage. Make it safe, stop the source, document, remove water and start drying before mold can start.
• DIY friendlyWasher, Dishwasher, Fridge and Toilet Supply Line LeaksHow washer hoses, dishwasher lines, ice maker tubing and toilet supply lines fail, how to clean up each kind of leak, and how to replace a line yourself.