Get matched with top basement waterproofing pros in Tiburon, CA

Q: What are signs that I need to waterproof my basement?

• <div><p>Due to the nature of basements, some level of waterproofing is necessary to prevent water from seeping in and causing damage. Some definitive signs that your basement needs waterproofing measures or needs existing waterproofing measures need to be updated include:</p><ul><li><p>Water in your basement, including damp walls or puddles on the floor</p></li><li><p>Mold spots in your basement</p></li><li><p>Musty smells or odors</p></li><li><p>Warped doors or walls</p></li><li><p>Cracks in walls</p></li><li><p>Insect issues, such as cockroaches and termites</p></li></ul><p></p></div>

Q: What material do you use to waterproof a basement?

• <div><p>&ldquo;Basement waterproofing&rdquo; 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.</p></div>

Q: How often do you need to clean your crawl space?

• <div><p>Plan on cleaning your crawl space at least once a year, though twice a year is ideal. During the cleaning, remove any debris or dust and check for potential issues like pest infestations or water damage. The sooner you catch these issues, the easier (and cheaper) it will be to fix them.</p></div>

Q: How much does basement waterproofing cost?

• <div><p>The <a href="https://www.angi.com/articles/how-much-does-basement-waterproofing-cost.htm">cost of basement waterproofing</a> is <b>$4,950</b> for the average homeowner. However, you could end up paying between <b>$600 and $14,000</b>, depending on factors like basement size, waterproofing method, and the region you live in. </p><p>If you live in an area with heavy rainfall, you might be paying more for waterproofing than if you lived somewhere drier since waterproofing contractors would be in high demand. Likewise, a 500-foot basement costs between <b>$2,500</b> <b>and $5,000</b> to waterproof, but that price rises significantly for a larger basement. </p></div>

Q: Can you add a bathroom to an unfinished basement?

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

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Verified Reviews for Basement Waterproofing pros in Tiburon, CA

*The Angi rating for Basement Waterproofing companies in Tiburon, 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 Tiburon, 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 March 20, 2025

Reviewed in March 2025
Integrity waterproofed the roof of my floating house to create large deck space and some months later waterproofed the new decks around my house, both times using an epoxy based product called Deck 70. They are easy to work with, very pleasant to have around the house, and do top quality work. I...
Integrity Decks & Restoration General Contracting, Inc.
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Reviewed in June 2023
We were very impressed by their drywall work in our basement. It was an intense project with a lot of little details and types of drywall work that included ceiling work, boxing in areas that needed to be boxed in, texturing, and rebuilding a bookcase that needed to be re done. They not only...
Copan Builders General Remodeling
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Reviewed in November 2022
My water heater was leaking profusely all over my basement floor and needed to be replaced immediately. Usually getting someone to come over in an emergency is not easy, but when I phoned Arreaga Santos Plumbing Santos said he would come over right away, which he did. My heater is in a difficult...
Arreaga Santos Plumbing
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Reviewed in September 2021
Junior & Linda are first class professionals. Their work was completed on time, on budget, and with the highest quality. We liked the finished job at our house so much that we hired them to paint the entire interior of our daughter’s newly purchased home which included converting an unused...
Juniors Construction & Remodeling
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Reviewed in March 2021
SkyBlue Builders Performs Quality Work SkyBlue Builders is a Five Star High Quality Siding Construction Company, and I recommend them. My thirty-year- old home is in a rural environment. with a humid atmosphere. The siding on my home was worn by the salt air and moisture and needed replacement...
Skyblue Builders Inc
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Reviewed in December 2018
Had water in my basement and ruined part of the flooring and walls. They came and fixed it.
Universal Home Improvement
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Reviewed in April 2015
I had called just for a water heater replacement but coincidentally discovered a leak from the shower to the basement just before the appointment. When Ryan arrived, he investigated the leak and confirmed that it was matter of caulking, not plumbing. While checking things out, and in the course...
Val Betti Plumbing & Heating
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Reviewed in December 2014
The whole crew was fast, pleasant and professional. They actually finished a week early and were happy to help out whenever anything came up that needed attention. The french drain was dug by hand so there was no damage to landscaping or the house. They worked really hard and fast, cleaned up...
Carty Construction-Storm and Surface Drain Specialists
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Reviewed in April 2014
The project was to insulate the home (1800 sq. ft) --blown in R38 for the attic and 6 inch BATTS (R-19) for the basement/subfloor to protect our newly installed hardwood floors and to provide insulation in general. Every aspect of the process from initial consult call to bidding to project...
Empire Insulation Contractors
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Reviewed in February 2013
Very well. Guys were courteous, hard-working, tidy, always cleaned up at the end of the day, no smoking, no radio. They installed an earthquake retrofit in basements of condos then solved a problem of water from a spring in next door house basement. <br />
LAWRENCE CONSTRUCTION, INC
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Find Basement waterproofing pros in Tiburon

Groundworks

4.6(

)

Serving Tiburon, 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."

+16

158 neighbors recently requested a quote

Recommended by58%of homeowners

Serving Tiburon, CA and surrounding areas

Approved

In business since 1968

Free estimates

Warranties offered

"Very professional and resolved my problem."

Response time9 hrs

Response rate100%

8 neighbors recently requested a quote

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Sonoma Siteworks & Engineering

5.0(

)

Serving Tiburon, 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."

3 neighbors recently requested a quote

Recommended by100%of homeowners

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Peter Levi Plumbing, Heating, Cooling, Drains

3.0(

)

Serving Tiburon, 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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Raya Engineering

New to Angi

Serving Tiburon, CA and surrounding areas

Approved

In business since 2011

Free estimates

Emergency services offered

Here at Raya Engineering, we sustain our company on the principal that our customers come first. We offer services that are tailored to your needs and we're ready to show you what our experience can bring to your project! Call us today!

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Good Plumbing Company

New to Angi

Serving Tiburon, CA and surrounding areas

Approved

In business since 2020

Emergency services offered

Warranties offered

Thank you for viewing my page!\nI am based in Sausalito, California and serve the greater San Francisco Bay area. \nI am licensed, bonded, and insured with decades of experience.\nAsk about discounts offered during these tough economic times!\nContact me directly for more details: @ [email protected] or 415-644-8811.\nFluently Speaks: Georgian, English, Russian. \nGoogle Translation Services available as well!\nHow can I help you?\nThere is no job too small or too large to tackle.\nSenior discounts offered as well!

+17

Response time4 hrs

3 neighbors recently requested a quote

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RSF Construction Inc.

1.0(

)

Serving Tiburon, 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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Same Day Plumbing, Heating, Cooling

New to Angi

Serving Tiburon, 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.

93 neighbors recently requested a quote

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Palm Construction, Inc.

5.0(

112

)

Serving Tiburon, CA and surrounding areas

In business since 2016

Free estimates

Credit card accepted

"Very professional. Completed the job in two weeks. The deliverables were as promised. They were very independent, requiring only minimal involvement from the client. However, communication with the owner could be enhanced a bit."

Recommended by100%of homeowners

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Palm Construction, Inc.

5.0(

)

Serving Tiburon, 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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Showing 1-10 of 50

Basement Waterproofing questions, answered by experts

Due to the nature of basements, some level of waterproofing is necessary to prevent water from seeping in and causing damage. Some definitive signs that your basement needs waterproofing measures or needs existing waterproofing measures need to be updated include:

Water in your basement, including damp walls or puddles on the floor
Mold spots in your basement
Musty smells or odors
Warped doors or walls
Cracks in walls
Insect issues, such as cockroaches and termites

“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.

Plan on cleaning your crawl space at least once a year, though twice a year is ideal. During the cleaning, remove any debris or dust and check for potential issues like pest infestations or water damage. The sooner you catch these issues, the easier (and cheaper) it will be to fix them.

The cost of basement waterproofing is $4,950 for the average homeowner. However, you could end up paying between $600 and $14,000, depending on factors like basement size, waterproofing method, and the region you live in.

If you live in an area with heavy rainfall, you might be paying more for waterproofing than if you lived somewhere drier since waterproofing contractors would be in high demand. Likewise, a 500-foot basement costs between $2,500 and $5,000 to waterproof, but that price rises significantly for a larger basement.

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 Tiburon, 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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