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General Contractor & Home Remodeling "Since 1983" Serving The Bay Area for 40 Years Skylights, and Retaining Wall

Expert Home Remodeling & General Contractor Service in the San Francisco Bay Area

Mares Dow contractor

If your property could benefit from remodeling, or you have a structural problem that needs to be fixed, finding an experienced general contractor that can deliver dependable results on your project is absolutely essential. With more than three decades of successful trading behind us, we are an established building firm that has worked on jobs of all shapes and sizes. Our wide range of trade expertise and commitment to doing the very best job possible ensures we’re the preferred residential general contractors for many local homes.


We are proud of our reputation for top-grade work and friendly, professional customer service. The quality of our work is recognized by Velux skylights, who have identified us as their five-star skylight installer for the local area.

Expert Home Remodeling
Home Remodeling Services

Retaining Wall Contractor, Repairing and Installing New Retaining Walls & Drainage

We design and build retaining walls with the proper drainage system. We install pressure treated post and lagging walls, soldier pile walls, Geo-Grid stacked block walls, concrete retaining walls, and Gabion cage walls.

Residential Home Siding -
James Hardie Siding

James Hardie is known for the reliability and beautiful design of its products and offers several styles that can suit any home. Whether you are looking for a classic lap or shingle siding, or you want to explore their Artisan Collection, as your siding contractor we can help you find the right product for you.

We Can Undertake Foundation Repair and French Drains on Any Property

Changes to building methods and materials mean that the approach needed to complete new work on a home built a century ago is very different to the requirements of a recently built residence. We have worked on properties of many different ages and types. This means we are well aware of the challenges and pitfalls which each type can present and are able to find appropriate solutions to them. We are also a certified Grip-Tite foundation systems repair specialist. No matter what type of building or remodeling project you have in mind, we have the right skill set to get the job done.

General Contractor Serving the San Francisco Bay Area

As well as homes and domestic properties, we are also able to work on most business premises, providing a responsive remodeling service that enables you to transform your workspace to better meet your business needs. To find out more about our wide range of services, or to discuss your project with us in more detail, you can call us at (925) 671-9500 (East Bay office) or (415) 447-6136 (San Francisco office).

Basement Remodel
Basement Waterproofing
Concrete Foundation
Custom Homes
Driveway Pavers
Dry Rot Repair

Finish Carpentry
French Drains
Front Porch
Garage Remodeling
General Contractor
Home Addition
Home Remodeling
Home Renovations
House Leveling

House Plans
Retaining Wall
Seismic Retrofit
Sun Tunnel Skylights
VELUX Skylights


East Bay

5016 Forni Drive,
Suite F
Concord, CA

San Francisco

1155 Ellis St.
Suite #4
San Francisco, CA

Schedule your ESTIMATE  Today! CALL US 925.671.9500 or 415.447.6136 for more information on Mares & Dow Construction


What people are saying

Norma B

Mares & Dow 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

Aaron R.

Mares & Dow 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. 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’s solid, reasonably priced, work. Thanks guys!

Aaron R.

Myla L.

I’ve had Mares & Dow 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.

Chris W.

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.

Jennifer S.

We had Mares & Dow install a Velux skylight in our new master bathroom. The space was small and dark, so Mares & Dow 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. They did a fantastic job and were great to work with! Thanks guys!

Jennifer S.


East Bay
5016 Forni Drive, Suite F
Concord, CA 94520

San Francisco
1155 Ellis St. Suite #4
San Francisco, CA 94109
5_Star_specialist_mares_dow_commercial_skylights (1)
Wasco Skylights - Velux Group
GripTite Certified repair specialist
Mares Dow Siding contractor

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