Basement Waterproofing, Crawl Space, Foundation Repair, & Radon Testing, Mitigation Contractors in Littleton, Aurora, Denver
We're your local experts from Ft. Collins to Parker to Highlands Ranch and everything in between!
We're able to protect the equity in your home by specializing in:
- Wet Basement Repair
- Foundation Repair
- Crawl Space Repair
- Sump Pump Installation
- Radon Testing & Mitigation
Complete Basement Systems of CO is your local foundation repair, basement waterproofing and crawl space contractor of choice. We are members of the Better Business Bureau and maintain a consistent A+ rating with the BBB.
We are the proud 2011 Associated General Contractors of America award winners in Denver for the category of "Meeting the Challenge of a Difficult Job". We go above and beyond to help our customers resolve challenges with their basement, foundation, crawlspace or radon gas problems. We're here to help you when you need us.

Dry Basement, Foundation, Crawlspace Experts in CO

We solve basement, foundation, and crawl space problems in Colorado including: structural integrity, mold infestation, and water intrusion.
Whether you have standing water, bowing walls, heaving, crawlspace humidity, or water coming in, we have reliable & effective solutions. We offer patented solutions based upon your specific problem. We are here to help!
Complete Basement Systems is a member of the largest nationwide network of Foundation Repair and Basement Waterproofing specialists in the US.
Denver's Residential & Commercial Foundation Repair Experts
Complete Basement Systems' foundation engineers have consulted with hundreds of homeowners about designing and installing effective solutions for everyone regarding drain tiles, basement wall crack repair, wet basements, dirt crawl spaces, basement finishing, and foundation repair.
Complete Basement Systems is a family-owned and operated basement waterproofing, crawl space repair and foundation repair company.
We provide innovative solutions for your home water and structural problems because we care!
Radon Gas Testing and Mitigation Company in Colorado
Radon gas is a silent killer that comes into your home from the earth and is the leading cause of lung cancer among non-smokers.
You can't smell, taste or feel radon gas which is why most people don't even know if they have high radon levels in their home or office.
To find out what your Colorado home's radon level is, contact Complete Basement Systems of CO and we'll test your home for you. We also provide radon mitigation services if your home's radon levels are above accepted levels.
Servicing Customers in Denver, Boulder, Ft. Collins, Parker, Colorado
We service: Littleton, Aurora, Denver, Englewood, Boulder, Arvada, Greeley, Broomfield, Loveland, Longmont, Westminster, Parker, Golden, Lakewood, Highland Ranch, Lafayette, Sterling, Fort Morgan, Morrison, Louisville, Commerce City, Wheat Ridge, Brighton, and surrounding areas in Colorado within Adams, Arapahoe, Boulder, Broomfield, Denver, Douglas, Gilpin, Jefferson, Larimer, Logan, Morgan, Washington, Weld counties.
We offer FREE basement, foundation, crawl space cost estimates in Denver. If you are planning on waterproofing your basement, foundation, or crawl space, call or e-mail us!




