Concrete Foundation Repair in Hercules, California

Serving Hercules and East Bay Since 1983

Turn to Mares & Dow Construction & Skylights, Inc. for Your Foundation Repair in Hercules, CA

One of the challenges that many of our customers have is finding foundation repair contractors that actually specialize in foundations! Although we manage a variety of other remodeling, renovation, and refurbishment projects, we can also offer more than three decades of experience in successfully resolving foundation problems of many different types. If you’ve noticed the tell-tale signs that your foundations could be in need of some work, we can complete the entire project for you, promptly, professionally, and with great results.

Foundation Repair Experts

When they discover that there is a problem with their foundations, many property owners may feel that a costly total replacement is the only option. We disagree! Why not let our expert team of seasoned foundation repair professionals complete an assessment of the issue and come up with some no-obligation options to resolve the problems you’re experiencing? In many cases, waterproofing or the installation of a retaining wall is all that’s needed to resolve your foundation problems – why pay for an entire replacement if you don’t need it?

Foundation Repairs from Grip-Tite

Many of the products we use are sourced from the Grip-Tite range; experts in foundation solutions, Grip-Tite offers a dependable answer to many foundation repair problems. As certified Grip-Tite installers, we have the necessary skills and knowledge to install one of their systems exactly as required.

Local Foundation Repair Services in Hercules, CA

Because we work on local properties, we have a good knowledge of the nearby geology, drainage issues, and potential problems that earthquakes can cause here. This allows us to suggest foundation repairs we know are suitable and that we expect to result in firm, dependable foundations that will last a lifetime. To request your FREE estimate or find out more, call us at (925) 671-9500 (East Bay) or (415) 447-6136 (San Francisco).

Concrete Foundation Repair
Concrete Foundation Repair

Ready to bring your vision to life?

Contact Mares & Dow Construction & Skylights today and let our 40 years of Bay Area expertise turn your dream project into reality.

Benefits of Going with Mares & Dow Construction & Skylights

Experience & Accreditations

Mares & Dow Construction & Skylights is certified and accredited by the best manufacturers in the industry. From Grip-Tite Foundation Systems, to James Hardie Siding, to VELUX Skylights, you can be sure to get the highest quality products for whatever your project.

Knowledge & Expertise

Serving the San Francisco Bay Area for over 40 years with quality general contracting, home remodeling, and skylight installation means you'll get the benefits of our expertise for every project.

Proven Customer Satisfaction

Maintaining a high level of customer satisfaction, we are proud to have provided our customers throughout the San Francisco Bay Area with quality construction and home improvement services for 40 years. With half of our new clients coming to us from referrals, it’s no secret that our customers/friends are truly pleased with the work we do.

40
Years of Experience

Serving the San Francisco Bay Area for 40 Years

Mares & Dow Construction & Skylights, Inc. is a longstanding partnership of 40 years between Archie Mares, Dennis Dow and hundreds of great customers throughout the San Francisco Bay Area. We are a general contractor, building custom homes, additions, home remodeling, skylights, retaining wall construction and commercial remodeling.

Maintaining a high level of customer satisfaction, we are proud to have provided our customers throughout the San Francisco Bay Area with quality construction and home improvement services for 40 years. With half of our new clients coming to us from referrals, it’s no secret that our customers/friends are truly pleased with the work we do.

Philosophy

Quality and service come first. We approach every job, big or small, with the same care and attention to detail we’d give our own homes. Our team combines time-tested building practices with modern innovation to deliver results that stand the test of time.

Get In Touch

Ready to start your next project? Whether you’re planning a home remodel, skylight installation, or foundation repair, our team is here to help.

Reach out to us for a free consultation. We’ll listen, offer expert guidance, and provide a detailed estimate tailored to your goals.

Our Mission

To enhance the lives of Bay Area homeowners through expert construction, thoughtful design, and dependable service. For over 40 years, our mission has remained simple: build with integrity, serve with pride, and create spaces our clients love to live in.

Values

We believe in integrity, craftsmanship, and lasting relationships. Every project is built on honesty, transparency, and respect - for our clients, our partners, and the homes we’re entrusted to improve.

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Words of Appreciation from Our Valued Clients

At Mares & Dow Construction & Skylights, we believe great service is its own reward. Every satisfied client, glowing review, and lasting relationship reminds us why we’ve dedicated over 40 years to building with integrity, craftsmanship, and care.

Mares & Dow Construction & Skylights installed a large Velux skylight for me in August 2017. The entire experience was wonderful and the skylight is beautiful, both functionally and aesthetically. Janet made sure the work was scheduled to be completed before a trip I had planned. Jimmy measured carefully when he quoted the work and even accommodated a last minute change on the location when he arrived to do the work. They protected my new floors and were careful to keep dust to a minimum. Archie came by to ensure that all was going smoothly. Freddy helped matched the stain on my nearly 70 year old tongue and grove ceiling that really took some effort and he even matched some a few small spots that a previous contractor had sanded and removed the original stain. EVERYONE was cheerful and knowledgeable. Now, my little mid century house has emerged into the light!

Norma B. San Francisco, California

Mares & Dow Construction & Skylights replaced two aging skylights in our bedroom and installed automatic blinds on four skylights. This was not an easy job, since our bedroom has very very high cathedral ceilings. In fact, one other skylight installer refused to do the job altogether, and a second made a bid that was almost twice as expensive as Mares & Dow Construction & Skylights. Janet Mares, who was our main contact for the job, was a pleasure to work with. Her son, Jimmy, who led the installation, was fearless climbing the ceiling, and he eally knew his stuff. We’re thrilled with our new and improved skylights, and we appreciate Mares & Dow Construction & Skylights’ solid, reasonably priced, work. Thanks guys!

Aaron R. Concord, California

I’ve had Mares & Dow Construction & Skylights install 3 sun tunnels in my home and most recently, 2 skylights in my garage/art studio. I couldn’t be more satisfied with the quality of their work and professionalism! All my communications with their office and installers have been extremely pleasant. I would use them again (and again) and highly recommend them to anyone looking to install Velux skylights/sun tunnels in their home!

Myla L. Concord, California

Being a new homeowner, i really did my research before having someone come out and give me a quote on a skylight. You never know what to believe when you read yelp reviews. So, i went ahead and had Jimmy from mares and dow come out and give me an estimate. He was right on time, came out and measured and was very professional while he was here. Janet called me a few days later and sent me over an estimate. I went them them and couldn’t be happier. It arrived in the time frame she had told me, and they were out that week. The workers came out on time, and were very friendly and professional. Dennis ( one of the owners) came out as well and checked on the job. The went above and beyond with their work. The skylight looks beautiful! Night and day from the old one. If you are wanting a skylight, i strongly reccomend going with mare and dow

Chris W. Walnut Creek, California

We had Mares & Dow Construction & Skylights install a Velux skylight in our new master bathroom. The space was small and dark, so Mares & Dow Construction & Skylights suggested a big skylight to add in lots of natural light. They built in a double crown molding to beautifully frame the skylight, and now the space is open and airy with wonderful natural light. We can open the skylight during warm months to let in fresh air. It was a superb addition to our bathroom renovation and a great suggestion from Mares & Dow Construction & Skylights. They did a fantastic job and were great to work with! Thanks guys!

Jennifer S. Walnut Creek, California

Building Knowledge: Insights From 40 Years of Craftsmanship

At Mares & Dow Construction & Skylights, sharing knowledge is part of our commitment to great service. Our blog offers expert tips, project insights, and inspiration drawn from decades of experience building and remodeling homes across the Bay Area.
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Frequently Asked Questions about our Foundation Repair Services in Hercules, CA

Homes in Hercules, CA, face foundation challenges due to expansive clay soils, proximity to the San Pablo Bay, seasonal moisture changes, and Bay Area seismic activity. These factors can cause concrete foundations to crack, settle, or shift over time. Mares & Dow Construction & Skylights provides professional concrete foundation repair services in Hercules to help homeowners restore stability and protect their investment.

Hercules homeowners often notice cracks in concrete slabs or garage floors, uneven or sloping floors, sticking doors or windows, drywall cracks, and gaps around door or window frames. These are common indicators of foundation movement caused by soil expansion and contraction.

Our process begins with a comprehensive foundation inspection, assessing soil conditions, drainage, and structural movement. Based on our findings, repairs may include foundation pier installation, slab leveling, crack injection, or structural reinforcement, all customized for Hercules soil and site conditions.

Hercules has clay-rich soils that expand when wet and shrink during dry periods. Combined with Bay moisture, winter rainfall, and regional seismic activity, these soil changes place ongoing stress on concrete foundations, even in newer homes.

Yes. Many foundation problems in Hercules are linked to poor drainage or excess moisture around the foundation. Along with structural repairs, we often recommend grading improvements, drainage corrections, or waterproofing solutions to help protect the foundation long term.

Minor repairs such as crack stabilization may take one to two days, while more extensive projects like pier installation or slab leveling may take several days, depending on property access and repair scope. Clear timelines are provided before work begins.

Costs vary based on the severity of foundation damage, foundation type, repair method, and site accessibility. We provide detailed, transparent estimates so Hercules homeowners understand the full scope and cost of repairs upfront.

In most cases, yes. Our experienced crews work efficiently to minimize disruption, allowing homeowners to remain in their homes throughout the repair process. Certain areas may be temporarily restricted during active work for safety.

Mares & Dow Construction & Skylights offers local expertise, certified professionals, and extensive experience with Hercules soil, moisture, and seismic conditions. We follow California building codes, use proven repair methods, and stand behind our workmanship for dependable, long-lasting results.