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Bay Area Underpinning technicians working on a foundation

Concrete Lifting, Foundation, & Crawl Space Repair in Santa Rosa

Fairfield Local Office

Bay Area Underpinning
2333 Courage Dr.
Suite C
Fairfield, CA 94533

Hours of Operation

Monday – Friday: 4 am – 8 pm

Saturday: 5 am – 8 pm

Sunday: 6 am – 8 pm

Award Winning Solutions in Santa Rosa, CA

At Bay Area Underpinning, a Groundworks company, we specialize in delivering a range of homeowner services including foundation repair, basement waterproofing, crawl space repair, and concrete lifting. Our primary mission is to provide top-tier home repair solutions and personalized service across Northern California. With a team of expert technicians, cutting-edge products, and nationally backed warranties, BAU is committed to restoring the integrity of your foundation or basement.

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 Tailored for You

Foundation Repair in Santa Rosa, CA

Maintaining the integrity of your home’s foundation is crucial for its overall stability. In Santa Rosa, CA, the diverse soil types, ranging from sandy loam to clay loam, significantly affect foundation stability due to their different drainage characteristics. The area experiences around 30 inches of annual rainfall, contributing to soil movement, erosion, and compromised foundation support. Common signs of foundation issues include cracks in drywall and floors, bowing walls, and uneven floors. Bay Area Underpinning responds with robust, custom solutions and warranties to strengthen your foundation. Our offerings include advanced pier systems, crawl space support, nd wall repair solutions such as wall anchors and specialized wall beams, ensuring your foundation’s long-term stability.

Crawl Space Repair in Santa Rosa, CA

In Santa Rosa, CA, where many homes are built above crawl spaces ranging from 1 to 3 feet high, these areas are vital for accommodating plumbing and ductwork. These spaces often face challenges due to open vents and bare dirt floors, leading to issues like moisture accumulation, pest infestations, and humid air penetration. Such conditions can result in mold growth, wood rot, and poor indoor air quality, impacting the entire house through the stack effect. Bay Area Underpinning excels in offering extensive crawl space repair services, including the installation of interior drains, sump pumps, dehumidifiers, thermal insulation, vapor barriers, and support posts, effectively addressing these prevalent issues.

Concrete Lifting & Leveling in Santa Rosa, CA

Your property’s concrete elements, such as patio, exterior steps, driveway, and sidewalk, are susceptible to damage over time due to the specific soil and climate conditions of Northern California. With Santa Rosa receiving approximately 30 inches of rain annually and having a variety of sandy loam and clay soils, issues like instability and erosion are common. As the soil structure weakens, your concrete surfaces may crack, sink, and become uneven, creating tripping hazards and diminishing the appearance and value of your property. Bay Area Underpinning presents a reliable and lasting solution with polyurethane foam injections. These injections are versatile, safe, minimally disruptive, and set quickly, allowing immediate use of the treated concrete areas.

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.

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.

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.

Some of the most common issues and challenges associated with crawl space foundations are:

  • Moisture – Unless you live in a highly arid region, your crawl space will be prone to moisture-related problems. Excess moisture in a crawl space can lead to mold growth, wood rot, and structural damage.
  • Pests – Damp, dark crawl spaces also provide an ideal habitat for rodents and termites.
  • Poor Insulation – Since the crawl space isn’t livable, many homeowners may overlook proper insulation, leading to energy loss and higher utility bills.
  • Structural Damage – Poor foundation design, inadequate support, and soil movement can cause structural damage to a crawl space foundation over time, leading to cracks, uneven settlement, and other issues.
  • Poor Indoor Air Quality – A damp, moldy crawl space can lead to poor indoor air quality, including unpleasant odors, allergens, and other contaminants that can affect the health of the home’s occupants.

    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