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Best basement waterproofing pros near San Anselmo, CA

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Top-Rated Basement waterproofing pros in San Anselmo - Updated Nov 2026

Avatar for Geico Builders
Geico Builders
5.0(
62
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving San Anselmo, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2013

Free estimates

Warranties offered

"We were in need to Remodel our Bathroom due to leak from the pipe in between two Bathrooms and change out the plumbing of our house from galvanized steel to copper, upgrade drain to ABS pipes. Geico Builders crew had an immediate availability to solve our issues. Mila was assigned to our project as a project manger. The communication of the project manager was outstanding as well as guidance on what has to be purchased for completing our beautiful Bathroom. Once the water leak was discovered and the subfloor damage was assessed. A repair plan was quickly in place for the leak. Plus a plan to restructure and build a stronger subfloor. Overall, Mila and Supervisor Ruiz and their team were very excellent at staying on schedule and completing the project with quality workmanship. Overall we are very happy with our beautiful new bathroom. Our renovation project was completed on time and the new look absolutely met our expectations. Our main expectations/requirements were a regular shower pan, the shower walls and the flooring, all done with quality porcelain tile. Adding a shampoo niche and 2 safety grab bars in the shower area. Plus the bench which I am so happy with. All of these items were installed with attention to detail and with quality workmanship. Thank you Geico Builders for your professionalism and hard work we are truly Happy with everything you had done to our house and looking forward to work with you for our new project which is going to be Kitchen Remodeling by next year."
Composite Deck Replacement Trex
Full Backyard Remodel with Outdoor Kitchen
Remodeling - Kitchen & Bathroom Project
Deck Replacement Composit
Composite Deck

+270

Response time1 day
Response rate100%
12 neighbors recently requested a quote
Avatar for Groundworks
Groundworks
4.6(
19
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving San Anselmo, CA and surrounding areas

Approved (Corporate)

In business since 2023

Free estimates

Warranties offered

"The team I worked with at BAU was great. I hired them to repair some minor vertical and horizontal foundation cracks that were found in a recent general home inspection. Everyone who came out was upbeat, professional, punctual, thorough, and highly detailed. Hunter came out first to check the entire foundation and give a free estimate. They then split the work up into two dates, and each crew was great. Michael and James came out first for the initial round, and then Alexander and Gabe came out to wrap up the last few areas. The guys were always on time, which is greatly appreciated. Both repair teams also did their own additional checks of the surrounding areas, also greatly appreciated. They were also able to provide before and after pictures, and were respectful of the property."
Basement
Basement
Basement
Basement
Foundation

+16

160 neighbors recently requested a quote
Recommended by58%of homeowners
Avatar for Rebel Pipelines General Engineering Inc.
Rebel Pipelines General Engineering Inc.
5.0(
3
)
Basement Drainage Channels - Install

Serving San Anselmo, CA and surrounding areas

Approved

Free estimates

Emergency services offered

Small jobs welcome

"Huge thanks to Rebel Pipelines for doing an amazing job on our sewer main repair. They were quick to respond, completely professional from start to finish, and did excellent work. Everything was handled smoothly and top notch. I would highly recommend them."
Retaining wall renovation
Retaining wall renovation
Retaining wall renovation
Retaining wall renovation
Retaining wall renovation

+13

8 neighbors recently requested a quote
Avatar for Same Day Plumbing, Heating, Cooling
Same Day Plumbing, Heating, Cooling
5.0(
1
)
Basement Drainage Channels - Install

Serving San Anselmo, CA and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

Family-owned Same Day Heating, Cooling, Plumbing operates out of Windsor, just north of Santa Rosa. We offer fast, reliable AC repair and installation services, heater repair & installation, and plumbing services, in the North Bay area of California. Our promise to you is always that if we do not fix your system the SAME DAY we arrive… you DON’T pay the service fee. Our home service experts are licensed and insured with more than 100 years of leadership experience. Additionally, we back all of our installation and replacement services with a 24-month, 100% satisfaction guarantee.

Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+8

46 neighbors recently requested a quote
RSF Construction Inc.
1.0(
1
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving San Anselmo, CA and surrounding areas

Approved

In business since 2019

Free estimates

Credit card accepted

RSF Construction Inc. is a leader in providing our customers with the highest quality service in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you!

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Basement Waterproofing FAQs, answered by experts

In nearly all cases, you are required to install a vapor barrier in your crawl space. However, local regulations will change based on the local climate and the crawl space's susceptibility to moisture. Even if a vapor barrier is not legally required, it is often a good idea to keep your crawl space dry.

Underfloor insulation alone will not cause moisture and mold, but improper installation can. Although the purpose is to seal any drafts, your subfloor still needs ventilation. If you seal the area too tightly and prevent all airflow, this can cause moisture to get trapped. This moisture eventually leads to mold and—if your floors are wood—rotting.

Yes, crawl spaces can attract bugs, especially since moisture tends to build up in the space, and moisture attracts pests. A good way to prevent pest infestation in your crawl space is to install a vapor barrier—called crawl space encapsulation—on the interior to seal the space, along with a French drain or some other kind of foundation drainage system outside to keep runoff out of your crawl space. You can also seal foundation cracks and repair damages to cut off access to pests.

“Basement waterproofing” sometimes refers to applying a waterproof sealant to basement walls, in which case you would use a waterproof paint, often made of latex. However, there are many methods you can use to waterproof a basement, including exterior drainage systems, interior drainage systems, dehumidifiers, and more. As such, the materials you use can vary depending on the methods you use.

A vapor barrier can last over 20 years, but they are vulnerable to pests, flooding, and other natural disasters. If your home weathers a storm or is treated for any pest infestation, make sure to have a drywall pro come check the integrity of your vapor barrier. It’s also important to have a pro install a vapor barrier since improper installation can lead to tears or leaks in the barrier that shorten its lifespan.

The San Anselmo, CA homeowners’ guide to basement waterproofing services

From average costs to expert advice, get all the answers you need to get your job done.