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Concrete Lifting, Foundation & Crawl Space Repair in San Jose

San Jose Local Office

Bay Area Underpinning
1161 N Fair Oaks Ave.
Sunnyvale, CA 94089

(408) 426-4952

Hours of Operation

Monday – Friday: 4 am – 8 pm

Saturday: 5 am – 8 pm

Sunday: 6 am – 8 pm

Award-Winning Solutions in San Jose

Bay Area Underpinning, a proud member of the Groundworks family, provides industry-leading foundation repair, crawl space repair, and concrete lifting services across Northern California. Our team of highly trained technicians have one goal: to offer top-tier home repair services, personalized solutions, and cutting-edge products with national-level warranties to homeowners just like you.

Our Process

Schedule Free Inspection

One of our contact center representatives will reach out to you to determine your problem and set the best time for one of our certified field inspectors to visit your home.

Consult with Our Certified Inspector

Our certified field inspector will visit your home to observe the problems in your home and inspect other areas of your home that may have been impacted.

Installation of Customized Solutions

Our professional production crew installs patented, American-made solutions in each home with care and strives to leave the area better than we found it.

Schedule Inspection

Why Homeowners Choose Bay Area Underpinning

Since 2005, Bay Area Underpinning – A Groundworks Company – has specialized in helping homeowners permanently repair and protect their homes with quality solutions. Our foundation repair, crawl space repair, and concrete lifting services and solutions have been trusted by businesses and homeowners in Northern California for more than 15 years.

Our highly trained, experienced, and friendly staff will treat your home as their own because we know how important it is to you, and we will help you protect your home for a lifetime. Experience our high-quality work and personalized service for yourself by contacting us today to book a free inspection and estimate.


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Offer ends 06/30/2024

A Crack in Your Foundation Shouldn't Break the Bank

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$500 off

any job over $2500*

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Our Services for You

Foundation Repair in San Jose, CA

The integrity of your home’s foundation is crucial for its overall stability. In San Jose, diverse soil types, ranging from sandy loam to silty clay loam, significantly influence foundation stability due to their different drainage characteristics. The area receives about 15 inches of rain annually, contributing to soil movement, erosion, and compromised foundation support. Indicators of these issues include cracks in drywall and floor, bowing walls, and uneven flooring. Bay Area Underpinning responds with robust, customized solutions backed by warranties to strengthen your foundation. Our services include advanced pier systems, crawl space support, and wall repair solutions such as wall anchors and special wall beams, guaranteeing enduring foundation stability.

Crawl Space Repair in San Jose, CA

In San Jose, numerous homes feature crawl spaces 1 to 3 feet high instead of basements, providing essential space for plumbing and ductwork. However, these areas often face problems due to open vents and bare dirt floors. Moisture, pests, and humid air can penetrate these spaces, fostering mold growth, wood rot, and poor indoor air quality, impacting the entire house through the stack effect. Bay Area Underpinning offers extensive crawl space repair services, which include installing interior drains, sump pumps, dehumidifiers, thermal insulation, vapor barriers, and support posts to effectively address these prevalent issues.

Concrete Lifting & Leveling in San Jose

Your property’s concrete surfaces, such as patio, exterior steps, driveway, and sidewalk, are vulnerable to damage over time due to San Jose’s unique soil and climate conditions. With an annual rainfall of around 15 inches and a variety of soils like sandy loam and clay, instability and erosion are common challenges. As the soil deteriorates, concrete structures may crack, sink, and become uneven, creating tripping hazards and diminishing your property’s value and aesthetics. Bay Area Underpinning provides a reliable and lasting solution with polyurethane foam injections. These injections are flexible, non-toxic and minimally invasive, and they cure quickly, allowing you to use your concrete areas on the same day they are treated!

Find Your Service Area


Properly repaired foundations can restore or even enhance the value of a home, especially in a competitive market like the Bay Area Underpinning.

Common methods include installing foundation piers and adding or adjusting support beams and screw jacks.

It’s advisable to have a professional assess and fix any floor cracks promptly. The sooner you identify and address floor cracks, the easier and more cost-effective the solution will be.

Concrete driveways sink, crack, and sustain other damage due to erosion beneath the slabs caused by expansive soil, soil instability, water intrusion from cracks, and growing tree roots. Heavy vehicles parked in the same place for extended periods can also cause driveways to sink. Contact Bay Area Underpinning for a free inspection to determine the source of the problem and the best solution.

Repairing average drywall cracks through patching usually costs between $300 and $500. However, patching merely conceals the underlying foundation issues affecting your home. The cost of foundation repair varies considerably, depending on several factors. To determine the exact cost, it’s best to request a free inspection from Bay Area Underpinning (BAU), which also offers flexible financing options to accommodate your budget.

    Contact Us For Your Free Inspection

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    Our Locations


    2333 Courage Dr. Suite C
    Fairfield, CA 94533

    San Jose

    1161 N Fair Oaks Ave
    Sunnyvale, CA 94089