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Our Services

  • Concealed drainage system
  • Powerful, reliable sump pumps
  • Battery backup systems
  • Patented waterproofing products
  • ENERGY STAR® dehumidifiers
  • Industry-leading warranties

Our Basement Systems Dealers Serving California

31858 Castaic Rd
Castaic, CA 91384
So Cal Crawl Space Solutions is the regional authorized dealer servicing Ventura, Santa Barbara, Palmdale, Edwards, Lompoc
67 Galli Drive Ste. C
Novato, CA 94949
Bay Area Moisture Control is a basement waterproofing contractor and authorized Basement Systems dealer servicing Bay Area, San Francisco, Oakland, Berkley, Daly City, Vallejo, and Novato.
1813 Rutan Drive Unit A
Livermore, CA 94551
When your basement is leaking, you need to call in a certified professional to solve your problems. The experts at Foundation Repair of CA have the skills and experience to help you deal with basement water intrusion. Find out more about their services and the areas they reach here.

 Your Home faces Water Damage

1. California may not receive a lot of precipitation on average but you would be surprised that California flood insurance loss from 1978 to 2001 was over 350 million dollars. That is the ninth highest in the nation.

2. When flooding hits your area, your basement is most likely to be the prime target for water damage.

3. If you allow it to be wet, moldy, humid, smelly, and unhealthy, you're abandoning an entire floor of space in your home. Additionally, the basement air - filled with odors, dust mite feces, humidity, and mold spores - will rise into the rest of the house, ruining the healthy environment of the home.

Basement Waterproofing & Crawl Space Repair

Whether you live in San Francisco, Sacramento, Oakland, Los Angeles or San Diego, our certified basement and crawl space contractors in your local areas are ready to help you find the right solutions to your basement or crawl space problems. They offer FREE basement or crawl space Estimates and Inspections!

We Provide:
  • Basement Waterproofing
  • Crawl Space Encapsulation
  • Leak Repairs
  • Exclusive, Patented Products
  • World's Best Sump Pumps
  • Energy-Efficient Dehumidifier             
You Receive:
  • Permanently Dry Basement or Crawl Space
  • Controlled Humidity
  • Mold Mitigation
  • Lifetime Transferable Warranty
  • Greater Home Value
  • Peace of Mind

Your home in California may face many types of basement or crawl space water problems, but we've seen them all! In our experiences we've found that the patented WaterGuard basement waterproofing system is the perfect solution for a wet basement, and our sump pumps are the best.

We also have other basement waterproofing products including the SunHouse window well (as seen on "I Want That" on HGTV), the most powerful and energy-efficient basement dehumidifier on the market (the SaniDry Basement Air System), basement walls and floors, and more. We can even take on indoor plumbing leaks or leaky water heaters.

California's Trusted Waterproofing Company

  • ""Thank you very much for your great work and for working with us."" Read Full Testimonial

    E. V. of South San Francisco, CA

    Customer Testimonial

              "Thank you very much for your great work and for working with us."
    E. V.
    South San Francisco, CA
  • "Your product uniquely fit our health needs. Our house feels so much healthier; we're sleeping better and have..." Read Full Testimonial

    K. C. of Corte Madera, CA

    Customer Testimonial

              "Your product uniquely fit our health needs. Our house feels so much healthier; we're sleeping better and have reduced sniffles."
    K. C.
    Corte Madera, CA

The Basement Systems International Network of Authorized Basement Waterproofing Dealers is a respected and highly professional network, and there are several network dealers that serve California.

Click here to contact us or call 800-638-7048 to schedule a free quote for your basement or crawl space waterproofing project. We service all of the state of California, including San Francisco, Los Angeles, San Diego, San Jose, Sacramento and Oakland.

Don’t entrust the health of your home to an amateur. When your basement is wet, call the company that has been revolutionizing basement waterproofing for more than 35 years. Basement Systems has solved wet basement problems for hundreds of thousands of homeowners throughout the United States, Canada, the United Kingdom, and Ireland. As a Basement Systems company, we offer an ensemble of patented products that aren't available to other contractors. We can provide a permanent solution to your basement waterproofing problem and will back it up with a lifetime, transferable warranty.

Click to see why people hire us

Recent job requests for basement waterproofing in CA:

Project Location: Declined, Shingle Springs, CA 95682

Comment: Water seepage

Project Location: Clay Station Rd, Wilton, CA 95693

Comment: I have a wet basement, crystalline growth and leaky walls.

Project Location: Co. Rd. V V, Glenn, CA 95943

Search Request: basement flood control contractor

Comment: High water table here combined with local farming leaves my basement full spring and summer. Drys up in fall/ winter months. Need help to correct problem. Pumps are overwhelmed by volume of water. Thinking about filling it in with cement.

Project Location: Twin Peaks Drive, Walnut Creek, CA 94595

Comment: Need below Grade Waterproofing done to our basement and a french drain put in.

Project Location: E L St, Benicia, CA 94510

Comment: Basement Drainage issues.

Project Location: Solano Ave, Napa, CA 94558

Comment: Water in basement

Project Location: Prosperity Way, San Leandro, CA 94578

Comment: Rain coming soon my basement is leaking

Project Location: Coolidge Ave, Oakland, CA 94602

Comment: My subfloor got flooded with the heavy rains last winter, I want to get this fixed. Look forward to an estimate

Project Location: Excelsior Ave., Oakland, CA 94602

Comment: We have a concrete block basement. We are experiencing a lot of leakage with the rains. We are interested in installing the interior water drainage system but we would like to know the cost.

Project Location: Elmwood Ave, Berkeley, CA 94705

Comment: We have water seeping into our basement. we are about to hire a contractor to rebuild our foundation and would like to consider improving the water flow around our house outside and into the basement. please contact for a discussion. Bruce

Project Location: Madison St, Alameda, CA 94501

Comment: High water table. Would like to find out about your waterproofing process.

Project Location: 63rd Street, Emeryville, CA 94608

Comment: During the rainy season, there is flooding in my basement along floor edges and seeping through walls through cracks.

Project Location: Filbert, Oakland, CA 94607

Comment: Basement floods during rain.

Project Location: Adam Way, Atherton, CA 94027

Comment: I have to replace the sump pump we have now from single to double sump pump but the room i have is 34" x 34" and the inline on the size is only 21" from the floor to the middle of the pipe is 20" . do u have any size is fit us? Thanks.

Project Location: 26th Avenue, San Mateo, CA 94403

Comment: Basement water through floors and through walls