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Best basement waterproofing pros near San Leandro, CA

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

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

Serving San Leandro, 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%
11 neighbors recently requested a quote
Avatar for Foundation Repair of CA
Foundation Repair of CA
5.0(
3
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving San Leandro, CA and surrounding areas

Approved

In business since 2011

Free estimates

Small jobs welcome

At Foundation Repair of CA, we specialize in stabilizing homes and businesses throughout Northern California. We specialize in primary foundation damage repair of all types. We provide solutions for failing foundations, including sinking or settling foundations, sagging crawl space, crawl space encapsulation and insulation, and earthquake retrofitting. Our expertise also includes concrete restoration, which incorporates concrete lifting and leveling of slabs, driveways, walkways and pool decks, and more! \n \nWe pride ourselves in providing free, no obligation foundation repair quotes for homeowners within our service area. Protect your home or business. Call us today.

PolyLevel Slab Lift - Before
PolyLevel Slab Lift - After
Pool Deck - Before
Pool Deck After
Response time1 day
Response rate94%
1 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 Leandro, 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 San Leandro, 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
Avatar for New Era Rooter & Plumbing
New Era Rooter & Plumbing
4.8(
34
)
Basement Drainage Channels - Install

Serving San Leandro, CA and surrounding areas

Free estimates

Emergency services offered

"Finding a plumber who is there to solve the issue and not try to redo your whole bathroom is hard to find. Everyone wants to cut and replace but New Era Plumbing took the time to diagnose and fix what was needed. Efficient. Cost effective. Has the skills, knowledge, and confidence to do it in one morning. I feel like lots of plumbers wanted to hedge on what they could deliver, especially since they are turning off your water. I’m very grateful to finally find a skilled professional."
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+3

Recommended by93%of homeowners
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Basement Waterproofing FAQs, answered by experts

No, your basement dehumidifier doesn’t need to be on 24/7. While it’s an excellent tool for tackling damp, musty air, especially in humid seasons, leaving it running nonstop can backfire. Over-drying the space can mess with your sinuses, warp wood, and even crack certain materials. Instead, only use your humidifier when moisture levels rise above 50%, and then give it a break when the humidity levels drop.

Several factors can impact the cost of waterproofing your basement. Some of the most common cost factors include:

  • Location

  • Square footage

  • Cause of the water leak

  • Type of foundation

  • Accessibility

  • Waterproofing method

  • Materials

  • Contractor experience and availability

  • Engineering reports, if needed

  • Structural and other repairs

  • Permits

A crawl space is an area under the house that provides access to plumbing, electrical, heating ducts, and other HVAC units. Its purpose is to create a buffer between the ground and the living area, helping with ventilation, moisture control, and access for maintenance or repairs. Crawl spaces are most often seen in houses in North America which are built on concrete foundations versus other parts of the world where buildings are constructed differently.

Flooded basement cleanup can take anywhere from a few days to several weeks, depending on the extent of water damage, the type of water involved, and the need for repairs or mold remediation. Severe cases with structural damage or extensive mold may require longer timelines. Quick action and professional help can speed up the process and reduce overall damage.

Rigid foam board insulation is one of the safest insulation materials for basement walls. The panels offer a moisture barrier to prevent mold and mildew build-up. At the same time, this material is also fire-resistant, so you don’t have to worry as much about a fire breaking out as you would with spray foam insulation. 

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

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