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Got a wet basement? Musty odors? Protect your home with our proven solutions & lifetime warranty.

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zip code: 20149

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3 Pros Basement Systems

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

Basement Waterproofing Companies In California

31858 Castaic Rd #204
Castaic, CA 91384
SW California: including Santa Barbara and Ventura counties.
View company profile for reviews, awards, before & after photos, and more.
67 Galli Drive Ste. C
Novato, CA 94949
Bay Area: including San Francisco, Oakland, Berkley, Daly City, Vallejo, and Novato.
View company profile for reviews, awards, before & after photos, and more.
930 S Andreasen Dr
Escondido, CA 92029
11017 Lockport Pl
Santa Fe Springs, CA 90670
Southern California: including Los Angeles, San Diego, Long Beach, and nearby cities.
View company profile for reviews, awards, before & after photos, and more.
4861 Sunrise Dr #105
Martinez, CA 94553
2540 Boatman Ave Suite 180
West Sacramento, CA 95691
Northern California: including Sacramento, Concord, Martinez, and surrounding areas.
View company profile for reviews, awards, before & after photos, and more.

Each of the companies listed here is an authorized Basement Systems dealer offering expert basement and crawl space waterproofing in a different region of California Each one offers drainage and sump pump installation, moisture control, and structural repairs. In each company profile, you can read reviews and check out the contractor’s history, service area, ratings, and more.

How to Choose a California Basement or Crawl Space Company

Wet basements and crawl spaces are a constant source of worry for homeowners. If you’ve experienced pooling water on the basement floor, excessive moisture in the crawl space, or cracks in your foundation or high humidity, it’s worth consulting with a professional basement contractor. An ounce of prevention can prevent a more serious problem. When the environment below the first floor of your home is wet, damp or humid, the resulting moisture and mold growth can damage building materials and stored possessions, pollute the indoor air, and risk the health of those living in the home.

Look for expertise, training, and experience.

When you choose a basement contractor in the Basement Systems network, you get a local company trained in and committed to the best waterproofing practices. Each contractor listed here is an expert in the diagnosis of sub-grade moisture problems as well as the design and installation of proper drainage, moisture and humidity control, and basement materials. Say good-bye to your wet basement with the best basement waterproofing in your neighborhood!

Demand high-quality basement waterproofing products.

These top California contractors have exclusive access to Basement Systems’ award-winning waterproofing products. Basement Systems’ products have set the standard for dry basements since 1987. With access to 27 patented Basement Systems products, your local Basement Systems dealer can tailor the right solution to address your specific basement or crawl space problem. With solutions like the WaterGuard basement drainage system and the UltraSump industrial-strength sump pump, your basement can be ready for the next big rainstorm.

Other basement waterproofing products include high-performance self-draining basement dehumidifiers , and crawl space encapsulation. Browse the full line of basement waterproofing products.

Why do California Basements Get Wet?

Weather factors: Californians keep a keen eye on the weather to understand the weather risks they may face in any given year. The level of snowpack and rainfall can vary, leading to droughts or above-average precipitation. In 2017, the Sacramento region experienced the “wettest year in a century” (Sacramento Bee), in 2005 the rarer "Pineapple Express" precipitation phenomenon dropped almost 25 inches of rain in the Santa Barbara area, and a milder instance of the same phenomenon caused plenty of damage in 2018.

Of course, you don’t have to experience a serious flood to worry about your basement. A short heavy rainfall can overwhelm a sump pump and the result can damage a basement in a few hours. 

Basement construction factors: Basements were never designed to stay dry all the time. They serve as a buffer layer between the living space in upper floors of a home and the earth. This makes them subject to hydrostatic pressure, which is a fancy term for the moisture in the soil that presses against the walls of a basement and overtime creates seepage and downright cracks in the foundation. The joint where the floor meets the wall is an especially vulnerable point in basement construction.

Whether your home is in the Bay areaSacramentoSanta Barbara, or Southern California, your basement or crawl space is vulnerable to water intrusion. Water from the soils surrounding your home can seep through basement walls. Cracks in the foundation, rusty windows, issues with the original construction of the basement, or a deteriorating exterior drainage system can lead to water intrusion, high humidity and leaks. If your basement is experiencing any of these issues, it’s time for a consultation with a professional contractor with experience in fixing basements, crawl spaces, and foundations.

Basement Waterproofing & Crawl Space Repair

Waterproof your basement today! The waterproofing experts in the Basement Systems network have helped homeowners across the state of California for years, by identifying the source of leaks, flooding, groundwater seepage, and musty odors. With a range of waterproofing and moisture control solutions available through Basement Systems, your local dealer will install the right solution for your basement or crawl space.

Wet Basement Solutions:
  • Basement Waterproofing
  • Crawl Space Encapsulation
  • Leak Basement Window Repairs
  • Exclusive Drainage & Moisture-Control Products
  • Industrial-Strength Sump Pumps 
  • Energy-Efficient Self-Draining Dehumidifier    
Dry Basement and Crawl Space Benefits:
  • Usable Basement or Crawl Space
  • Healthier Indoor Air
  • Mold, Dust, and Pest Reduction
  • Lifetime Transferable Warranty
  • Home Value Protected
  • Peace of Mind When It Rains!

Next Steps to a Dry Basement

Basement Systems products address every major basement or crawl space problem, including moisture intrusion, flooding, leaky windows, structural rot, and excessive humidity. The best basement waterproofers for your home are those who can diagnose the source of the problem and have the training, expertise and experience to design and install an effective system that keeps your basement dry.

1) Read Reviews & Check Out Past Work

Spend your time reading through the reviews of the basement waterproofing companies listed here. Check out their profiles that highlight their work (before and after photos), awards, and experience.

2) Get inspections and cost quotes

Call or fill out the Free Estimate form to set up an inspection of your basement. When you choose a Basement Systems authorized contractor, you receive a custom design solution, and written estimate at no charge.

3) Choose Your Contractor & Enjoy the Result!

Choose a basement waterproofer based on the proposed solution, quality of materials, reputation of the contractor, and the price. Remember you only want to waterproof your basement once! After the work is completed, enjoy your dry basement for storage, finishing, laundry, and extra living space.

California' Trusted Waterproofing Companies

  • ""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

Let Basement Systems solve your basement or crawl space water problem. One of the local California basement experts in our network will be happy to help transform your wet, leaky or humid basement into a usable, dry, healthier space today! From the San Francisco area to Sacramento, from Santa Barbara to Orange County, you can find a Basement Systems waterproofing pro who serves your neighborhood.

Improve your home starting with a free basement inspection and estimate!

Click to see why people hire us

Recent job requests for basement waterproofing in CA:

Project Location: Palou, Vallejo, CA 94591

Search Request: basement systems

Comment: New construction , stem wall footing , old slab from original house left in( 1953), , although no water seen in the old slab area there is 4 inches in the back yard area in a a heavy rainy season . water comes down slope underground creating head and water to percolate in my back yard. Concrete walls ( foundation) are in . Soil on inside edges where slab was cut out for stem walls and footings, are compacted with 5% lime.

Project Location: 3rd Street, Rodeo, CA 94572


Project Location: Palm Avenue, Richmond, CA 94805

Comment: Basement has been unsealed for a long time. Lots of dirt and the house gets random musty scents at random times

Project Location: Oak ST, Alameda, CA 94501

Comment: Ground water leak through foundation, possible put in a French drain or some kind of water removal system. Please get back to me asap as my basement is filling up with water Thank you

Project Location: Polk St, Albany, CA 94706

Comment: New concrete basement

Project Location: Edinburght Street, San Mateo, CA 94402

Comment: Looking to get rid of water in basement

Project Location: , Graton, CA 95444

Comment: Need a bid asap

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