
Serving Castro Valley, CA and surrounding areas
Approved
Super Service Award Winner
Free estimates
Emergency services offered
Warranties offered
"Isaac did a wonderful job of concrete work (driveway). The finish of his work is impeccable."





+33

*The Angi rating for Basement Waterproofing companies in Castro Valley, 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 Castro Valley, 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 October 02, 2026

Serving Castro Valley, CA and surrounding areas
Approved
Super Service Award Winner
Free estimates
Emergency services offered
Warranties offered
"Isaac did a wonderful job of concrete work (driveway). The finish of his work is impeccable."





+33

Serving Castro Valley, 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."





+270

Serving Castro Valley, CA and surrounding areas
Approved
In business since 1996
Free estimates
Emergency services offered
"Company was on time and very professional."

Serving Castro Valley, 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.





Serving Castro Valley, CA and surrounding areas
Approved (Corporate)
In business since 2023
Free estimates
Warranties offered
"The Groundworks folks (formerly Bay Area Underpinning) applied their foundation-underpinning technology and expertise to extend to bedrock, level, square up the foundation for an extensive house remodel. I was most impressed by the young man onsite supervisor, Josh who answered all my work done, how and why questions. I wish this info was provided up front by the estimator. (My design-build remodel contractor referred this company)."





+16
Serving Castro Valley, 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!
Serving Castro Valley, 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!
Serving Castro Valley, 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."
Serving Castro Valley, 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!"

Serving Castro Valley, CA and surrounding areas
Free estimates
Emergency services offered
"Inspected crawl space and ensure no other issues. Replaced wax ring. Took less than an hour. Will refer to neighbors."





+3
From average costs to expert advice, get all the answers you need to get your job done.

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