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Verified Reviews for Basement Waterproofing pros in Sonoma, CA

*The Angi rating for Basement Waterproofing companies in Sonoma, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Waterproofing needs.

*The HomeAdvisor rating for Basement Waterproofing companies in Sonoma, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Waterproofing needs.

Last update on September 30, 2025

Find Basement waterproofing pros in Sonoma

Avatar for Groundworks
Groundworks
4.6(
19
)

Serving Sonoma, CA and surrounding areas

Approved (Corporate)

In business since 2023

Free estimates

Warranties offered

"Groundwork’s did a great job on our house. Luis G was an amazing Forman with Ken H and Mark P all waterproofed under our house. They worked quickly, efficiently and thoroughly left all areas in tact and clean. Luis communicated very clearly about the all aspects of the job until it was completed."
Basement
Basement
Basement
Basement
Foundation

+16

158 neighbors recently requested a quote
Recommended by58%of homeowners
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Avatar for Sonoma Siteworks & Engineering
Sonoma Siteworks & Engineering
5.0(
4
)

Serving Sonoma, CA and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"work was well organized, well executed and completed ahead of schedule by a friendly and knowledgable crew."
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Clearing and Grading
5 neighbors recently requested a quote
Recommended by100%of homeowners
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Avatar for Peter Levi Plumbing, Heating, Cooling, Drains
Peter Levi Plumbing, Heating, Cooling, Drains
3.0(
13
)

Serving Sonoma, CA and surrounding areas

Approved (Corporate)

In business since 1990

Free estimates

Warranties offered

"He did a fantastic job he answered all my questions and told me if I have any questions that I could always call him.
"
16 neighbors recently requested a quote
Recommended by70%of homeowners
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RSF Construction Inc.
1.0(
1
)

Serving Sonoma, 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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Avatar for Same Day Plumbing, Heating, Cooling
Same Day Plumbing, Heating, Cooling
New to Angi

Serving Sonoma, 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.

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+8

90 neighbors recently requested a quote
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Basement Waterproofing questions, answered by experts

Living in a finished basement is acceptable, but only if the space has the proper points of egress and includes smoke and carbon monoxide (CO) detectors to ensure the safety of the occupants. A good way to ensure your finished basement is suitable for use as living space is to get the basement finishing project properly permitted.

In most cases, a crawl space will not dry out on its own unless the moisture comes from an uncommon flood and isn’t expected to be a recurring issue. For most homeowners, moisture problems in the crawl space will only continue to get worse over time, so addressing the underlying problem with gutter systems or a foundation drainage system and setting up a preventative solution like a dehumidifier is necessary.

Although the two terms are closely related and often used interchangeably, pier and beam foundations and crawl spaces are different things. A pier and beam foundation is made up of concrete piers and wooden beams and creates a space under the home known as a crawl space. There are several types of foundations that create crawl spaces, often collectively known as “crawl space foundations,” but the crawl space itself is separate from the foundation. 

“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 sump pump can be added to an existing basement. To do this, you will need to use a jackhammer or sledgehammer to break up the concrete and dig a pit. You will also need to create a hole in your basement wall to run the discharge pipe through.

The Sonoma, CA homeowners’ guide to basement waterproofing services

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

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