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Best basement waterproofing pros near Petaluma, CA

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Top-Rated Basement waterproofing pros in Petaluma - Updated Nov 2026

Avatar for Groundworks
Groundworks
4.6(
19
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Petaluma, CA and surrounding areas

Approved (Corporate)

In business since 2023

Free estimates

Warranties offered

"Everything looks good after the work was done. I can finally close my bathroom door. I appreciated the fact that the foreman Erick Baez, went over what was done as they were done. I also appreciated that the two installers Manny Erickson and Jesus Villagomez also communicated with me after they were done to reassure that they did a proper job installing the jacks. Very good to know how the process was going. Great job."
Basement
Basement
Basement
Basement
Foundation

+16

169 neighbors recently requested a quote
Recommended by58%of homeowners
Avatar for Same Day Plumbing, Heating, Cooling
Same Day Plumbing, Heating, Cooling
5.0(
1
)
Basement Drainage Channels - Install

Serving Petaluma, 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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Additional Photos

+8

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

Serving Petaluma, 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!

Palm Construction, Inc.
5.0(
90
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Petaluma, CA and surrounding areas

In business since 2016

Free estimates

Credit card accepted

"We worked with Ali (sales manager) and Tony (project manager), who took the time to design a project that made sense for our property and our budget, made a number of suggestions and recommendations and were never pushy or tried to "sell" us on something. The crew really went above and beyond to provide top quality workmanship and overall we were in very good hands. Highly recommended!"
Recommended by100%of homeowners
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Basement Waterproofing FAQs, answered by experts

Yes, these services often increase home value by preventing moisture-related issues and enhancing the usable space in basements or crawlspaces.

Mold and mildew are the things in basements that actually cause the musty odors, but moisture is the underlying issue that causes mold and mildew growth. Addressing moisture and water problems and then removing materials that are moldy are some of the best ways to get rid of the musty odors. Preventive measures after that—like installing air fresheners and a dehumidifier—can help keep musty odors from returning.

You can DIY basement waterproofing in some ways to help save on the overall costs. If your basement isn’t experiencing a lot of water but is noticeably humid, you can try running a dehumidifier that will pull the excess water out of the air. If you notice water leaking due to outdoor drainage issues, you can add downspout extensions to keep rainwater away from your home. 

However, if the problem is more severe and requires a more extensive solution, it’s best to call a basement waterproofing professional to assess the treatment you need and install waterproofing safeguards properly. Since keeping water out of your basement is important, ensuring this job is done correctly the first time is best.

A crawl space can be as little as 42 inches below the grade of your house, but this is not always recommended in flood-prone areas. At a minimum, there must be at least 16 inches of clearance between the ground and the floor joists to access the space in an emergency.

Yes, you can add a bathroom to an unfinished basement, but you’ll want to take proper precautions if doing so. As with any bathroom addition, you’ll need to make sure that it’s approved by local building authorities first. With unfinished basements, you especially need to keep an eye on proper ventilation practices.

The Petaluma, CA homeowners’ guide to basement waterproofing services

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