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TRUSTED BY MILL VALLEY, CA HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon16
    Verified foundation repairs reviews

Top-Rated Foundation repair specialists in Mill Valley - Updated Nov 2026

Avatar for Groundworks
Groundworks
4.6(
19
)
Concrete Foundation - RaiseConcrete Foundation - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation+1 more

Serving Mill Valley, CA and surrounding areas

Approved (Corporate)

In business since 2023

Free estimates

Warranties offered

"Within a few months of buying our first home, we noticed some troubling signs: bedroom doors swinging open or closed on their own, “bubbles” and creaks in sections of the newly renovated floors, and significant cracks splitting the concrete in our garage. Although two general inspectors assured us that our house was level, we reached out to Bay Area Underpinning (BAU) for a more detailed assessment—and we're so glad we did! Inspector Christopher Murray conducted a meticulous inspection with radar equipment. While technically our house was level, Christopher uncovered that our foundation was sinking by inches in multiple areas, explaining the issues we were experiencing. Though the news and associated repair cost were a bit daunting as new homeowners, Christopher’s knowledge, professionalism, and clear answers to all our questions reassured us that we were in good hands. With confidence, we decided to proceed with BAU for the repair. Fredy Mora and his crew did exceptional work with the demo of the old concrete slabs and the prep for lifting, working quickly and efficiently. Fredy’s positive attitude made the process smooth, and his team was thorough and dedicated from start to finish. A special thank you to our lift project manager, Kevin Gaeden. Kevin was an outstanding communicator, keeping us fully informed and addressing every question promptly. His attentiveness made a huge difference throughout the project, and we felt reassured every step of the way. Esteban Ibarra, a crewmember on the lift team, also did superb work, handling the hands-on details with skill and care. Both Kevin and Esteban even went above and beyond, taking time to fix a jammed bedroom door that had shifted with the house lift. While foundation issues are never easy, we couldn’t have asked for a better team. We’re incredibly grateful to Bay Area Underpinning for their expertise, professionalism, and exceptional service. Thank you, BAU!"
Basement
Basement
Basement
Basement
Foundation

+16

163 neighbors recently requested a quote
Recommended by58%of homeowners
Avatar for Geico Builders
Geico Builders
5.0(
62
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Mill Valley, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2013

Free estimates

Warranties offered

"We were in need to Remodel our Bathroom due to leak from the pipe in between two Bathrooms and change out the plumbing of our house from galvanized steel to copper, upgrade drain to ABS pipes. Geico Builders crew had an immediate availability to solve our issues. Mila was assigned to our project as a project manger. The communication of the project manager was outstanding as well as guidance on what has to be purchased for completing our beautiful Bathroom. Once the water leak was discovered and the subfloor damage was assessed. A repair plan was quickly in place for the leak. Plus a plan to restructure and build a stronger subfloor. Overall, Mila and Supervisor Ruiz and their team were very excellent at staying on schedule and completing the project with quality workmanship. Overall we are very happy with our beautiful new bathroom. Our renovation project was completed on time and the new look absolutely met our expectations. Our main expectations/requirements were a regular shower pan, the shower walls and the flooring, all done with quality porcelain tile. Adding a shampoo niche and 2 safety grab bars in the shower area. Plus the bench which I am so happy with. All of these items were installed with attention to detail and with quality workmanship. Thank you Geico Builders for your professionalism and hard work we are truly Happy with everything you had done to our house and looking forward to work with you for our new project which is going to be Kitchen Remodeling by next year."
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 I Construction and Structural, Inc.
I Construction and Structural, Inc.
4.6(
28
)
Concrete Foundation - Repair

Serving Mill Valley, CA and surrounding areas

Approved

In business since 1993

Free estimates

Small jobs welcome

"We found this company through Home Advisors when we needed extensive repair work on our very large front deck that included removal of several layers of the old Deck 70 coating and decayed plywood, rebuilding the substructure, and eventually applying a waterproof membrane over it before installing a new topcoat. To do this, portions of the stuccoed facade of our house and the deck railing had to be removed to make room for new flashing all around. After we came to an agreement with Dan Betyordekom of I Construction to do the work, we braced ourselves for the disruptions and turmoil such a project typically inflicts on an active household (this was not our first such rodeo), dreading the inevitable delays that seem to be part of any construction work. Today, merely 10 days after we signed the contract, we look out on our splendid new deck, which, even according to the building inspector, reflects excellent work. Don's tireless crew showed up on time every day, worked meticulously and professionally, took no shortcuts, cleaned up thoroughly at the end of each day, and went beyond our expectations in every aspect. When they replaced the portions of the stucco and deck railing they had removed, they didn't just paint the replaced portions-they painted the whole house wall and railing... Throughout the work, Dan was in constant contact with us to ensure that our normal routines were not affected by the work, and even made sure that the deck would be finished and usable for a baby shower we had scheduled for our son and his expecting wife. The deck was finished in time, and the party was a blast!"
Car Deck
Car Deck
Car Deck
Car Deck
Car Deck

+70

Recommended by95%of homeowners
Avatar for McCormick Home Builders, Inc.
McCormick Home Builders, Inc.
4.7(
42
)
Concrete Foundation - RaiseConcrete Foundation - Repair

Serving Mill Valley, CA and surrounding areas

Approved

In business since 2017

Free estimates

Customers say: True professional

"After dealing with frequent roof repairs, we finally decided on a complete replacement for our Livermore home. Avi kept us informed every step of the way, and the finished roof exceeded our expectations. It's made a noticeable difference during hot summer days."
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+1

Response time6 hrs
Recommended by17%of homeowners
Avatar for Just Stamping Concrete
Just Stamping Concrete
5.0(
28
)
Concrete Foundation - RaiseConcrete Foundation - RepairPoured Concrete Wall - Repair

Serving Mill Valley, CA and surrounding areas

Approved

In business since 2007

Free estimates

Credit card accepted

"I recently hired a landscape designer to help me revamp my backyard, and I'm thrilled with the results. The designer was creative and listened to my needs, and they were able to create a beautiful and functional outdoor space that exceeded my expectations. The team was professional and efficient, and they completed the project in a timely manner. I would highly recommend this service to anyone looking to transform their outdoor space."
Concrete
Response time2 hrs
Response rate100%
3 neighbors recently requested a quote
SGB Inc.
5.0(
6
)
Foundation Drainage - Install or Replace

Serving Mill Valley, CA and surrounding areas

Approved

In business since 2015

Free estimates

Credit card accepted

"The team was amazing! We had an old deck in our backyard and we hired Palm Construction to replace and extend it and they did a great work! The job was done in less than 2 weeks, Communication was great, they cared about the backyard and plants and we are so happy itâ s all ready just before summer. Highly recommended!!"
Response time2 days
Response rate86%
Recommended by100%of homeowners
Avatar for Cortez Bros Concrete Construction Inc
Cortez Bros Concrete Construction Inc
4.6(
29
)
Concrete Foundation - RepairPoured Concrete Wall - Repair

Serving Mill Valley, CA and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

"Excellent service by Cortez Bros. They came and repaired a slope issue and fix my patio. Created new trench, and finish the whole thing just the way I wanted. Highly recommend their service."
Driveway
Bocce ball court and patio
Ashlar cut slate
Stamp patterns
Stamp patterns

+63

Response time2 days
6 neighbors recently requested a quote
Recommended by100%of homeowners
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Foundation Repair FAQs, answered by experts

There are many actions that specialists can take to repair a bad foundation. However, just like a car, a specialist will determine whether the cost of repairs is worth it in the long run. In many cases, repairs to the surrounding property—such as regrading your lawn or addressing lawn drainage issues—will also be necessary.

If your foundation repair claim gets denied, the first step is to carefully read over your policy and denial letter so you understand the reason for the denial. Then, gather evidence and documents that can support your case and appeal the denial with your insurance company. If your insurer does not eventually honor your claim, you may want to file a complaint with the insurance department in your state. In some cases, it may make sense to work with an attorney and file a lawsuit.

Concrete pools are very durable but can crack if not properly maintained. The most significant risk is winter weather and low temperatures when water can seep into crevices and freeze. To avoid damage, use the proper winterization chemicals, and don’t completely drain your pool. Concrete pool repairs cost around $75 per linear foot for small cracks.

Yes, it is normal for a block foundation to crack. Some block foundation cracks are more serious than others and indicative of a larger structural problem. On the other hand, minor cracks may not be of immediate concern but should be monitored. Regardless, foundational cracks are not an uncommon response to wear on a structure from time and weather.

You’ll need to reseal the foundation every five to 10 years, depending on the sealant you’ve used, the moisture conditions present in and around your home, and the condition of your foundation. Having a foundation inspection conducted before reapplication can help you catch any problems before you begin resealing. Of course, if you notice any new leaks or other moisture problems at any time, it may be necessary to reseal the foundation sooner.

The Mill Valley, CA homeowners’ guide to foundation repairs

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