Top-rated basement waterproofing pros.

Best basement waterproofing pros near Foster City, CA

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Top-Rated Basement waterproofing pros in Foster City - Updated Nov 2026

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

Serving Foster City, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2013

Free estimates

Warranties offered

"I’ve been working with Geico Builders for the past two years. Initially I’ve met Mila who helped us with our basement drainage issue resolved & built with best drainage solution. At the beginning of September this year Geico Builders started backyard renovation which is contains structural retaining wall about 220 lnf, pavers, composite deck Trex, staircase with beautiful fountain. They completed my backyard project in very short period of time comparison to the amount of work was need it done. Excellent crew & communication with in backyard project. Mila is amazing so much patience and attention to details. I recommend Geico Builders for all your remodeling needs truly is the best company I work so far."
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 In & Out Plumbing & Construction Inc
In & Out Plumbing & Construction Inc
4.2(
79
)
Basement Drainage Channels - Install

Serving Foster City, CA and surrounding areas

Approved

In business since 1998

Free estimates

Emergency services offered

In and Out Plumbing and Construction is a family owned business and we take pride in our honesty, our integrity, and ourselves. Our Plumbers and Technicians are trained, licensed, bonded and insured professionals. We focus on residential and commercial plumbing in the Bay Area. We are open 24/7 and on all HOLIDAYS.

San Francisco Sewer Line
Floor Drain
San Francisco Sewer Line
Floor Drain
San Francisco Sewer Line

+27

Response time1 day
Response rate99%
12 neighbors recently requested a quote
Avatar for Mike Counsil Plumbing and Rooter
Mike Counsil Plumbing and Rooter
4.0(
331
)
Basement Drainage Channels - Install

Serving Foster City, CA and surrounding areas

Approved (Corporate)

In business since 1994

Emergency services offered

Warranties offered

"The guy that came out was a great guy. He worked down in the basement for at least three hours installing the pump. I was very pleased with the quality of the work as well. The price for the service was very good."
Preparing a safe environment for working on a sewer line replacement.
Water heater installation with expansion tank
Additional Photos
Additional Photos
Additional Photos

+28

Response time8 hrs
Response rate100%
Recommended by81%of homeowners
Avatar for Rebel Pipelines General Engineering Inc.
Rebel Pipelines General Engineering Inc.
5.0(
3
)
Basement Drainage Channels - Install

Serving Foster City, CA and surrounding areas

Approved

Free estimates

Emergency services offered

Small jobs welcome

Rebel Pipelines General Engineering Inc. is a premier Class A general engineering contractor based in Petaluma, California, serving municipalities, commercial developers, utility districts, and general contractors throughout Sonoma County and the greater North Bay area. Built on a reputation for precision earthmoving, rigorous safety standards, and deep technical expertise, Rebel Pipelines delivers end-to-end underground utility infrastructure and site preparation. \n \nFrom deep municipal sewer line installations to high-capacity water distribution mains and complex earth retention systems, Rebel Pipelines provides dependable, on-schedule site solutions engineered to meet exacting public works specifications and private development standards.

Retaining wall renovation
Retaining wall renovation
Retaining wall renovation
Retaining wall renovation
Retaining wall renovation

+13

8 neighbors recently requested a quote
Avatar for Groundworks
Groundworks
3.1(
9
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Foster City, CA and surrounding areas

Approved (Corporate)

In business since 2023

Free estimates

Warranties offered

Groundworks is the North America's leading and fastest-growing foundation repair and water management solutions provider. Groundworks is a vertically integrated company with its own manufacturing operations and a world-class software solution, allowing us to serve our customers more effectively. From the first phone call to the annual maintenance offered, our customers have peace of mind knowing we're there with one mission to repair, protect and improve their home. For state licenses visit Groundworks.com/licensing

Foundation
Foundation
Foundation
Concrete
Concrete

+16

107 neighbors recently requested a quote
Recommended by12%of homeowners
RSF Construction Inc.
1.0(
1
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Foster City, 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(
112
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Foster City, CA and surrounding areas

In business since 2016

Free estimates

Credit card accepted

It can be a daunting task looking for not only the right contractor for your job but also the right contractor for you. We completely understand what you're going through. We know every customer has different desires, different needs and different schedules. We're not only here to turn your ideas into reality but to make it a memorable experience every step of the way. Call us right now, no matter where you are in the planning process.

Recommended by100%of homeowners
Palm Construction, Inc.
5.0(
90
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Foster City, CA and surrounding areas

In business since 2016

Free estimates

Credit card accepted

It can be a daunting task looking for not only the right contractor for your job but also the right contractor for you. We completely understand what you're going through. We know every customer has different desires, different needs and different schedules. We're not only here to turn your ideas into reality but to make it a memorable experience every step of the way. Call us right now, no matter where you are in the planning process.

Recommended by100%of homeowners
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Basement Waterproofing FAQs, answered by experts

If not properly maintained, an underground downspout may damage your home's foundation. A clogged downspout can back up, causing water to pool around the base of your home and seep into the foundation. Regular inspections and maintenance keep your downspout in good working order, preventing damage and protecting your home.

Typically, waterproofing a basement should last up to 10 years. However, it’s worth noting that with proper maintenance and depending on the waterproofing method and installation quality, you can probably squeeze another decade out of it.

Some disadvantages of crawl spaces are mostly regarding the air itself—moisture build-up and poor ventilation, which can cause problems both in the house and underneath it, even damaging the foundation itself. Crawl spaces are difficult to access and often invite unwanted pests during the hot summer months and the cold winter ones. These hard-to-seal spaces are also susceptible to water damage during periods of heavy rain or melting snow.

You should plan on waiting at least a year and ideally two to three years after construction before finishing your basement. This will give the foundation time to settle in response to the weight of your home and the expansion of the surrounding soil. You can then repair your foundation and seal any cracks as needed before finishing it to reduce your risk of future leaks or other issues.

Access to commercial-grade products and equipment, ensuring thorough coverage and long-lasting protection.

The Foster City, CA homeowners’ guide to basement waterproofing services

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