General Contractors, Home Remodeling & Skylight Installations
Home Additions In San Ramon, CA
Custom Additions Built To Fit Your Life & Style Since 1983
Add More Living Space Without Leaving The Home You Love
Is your San Ramon home starting to feel a bit tight? Whether your family is expanding, you’re working from home more often, or you simply want more room to unwind or entertain, Mares & Dow Construction & Skylights is here to help. Since 1983, we’ve been a trusted name in San Ramon and throughout the Tri-Valley area for crafting high-quality, custom home additions that elevate your lifestyle and increase your property value.
Our experienced design-build team works closely with you to create smart, functional spaces that flow beautifully with your existing home, built to suit your needs today and for years to come.
Types Of Home Additions We Build In San Ramon
From spacious homes in Gale Ranch to cozy properties in the older neighborhoods near downtown, we’ve helped homeowners across San Ramon create stylish, seamless additions that enhance both comfort and function. We handle every step, from initial concept through final inspection, so your project is smooth and stress-free.
We specialize in:
Primary Suite Additions – Create a private retreat with spa-inspired bathrooms, walk-in closets, and flexible floor plans
Accessory Dwelling Units (ADUs) – Perfect for multigenerational living, guest quarters, or rental income—always built to comply with California and San Ramon ADU guidelines
Second-Story Expansions – Add square footage without sacrificing your yard space—a great option for growing families or maximizing scenic views
Garage Additions & Conversions – Add a new garage or convert an existing one into a home office, gym, guest suite, or income-generating unit
Why San Ramon Homeowners Choose Mares & Dow Construction & Skylights
We’ve been proudly serving families across San Ramon and the broader San Ramon Valley for over 40 years. Our deep understanding of local styles, permitting processes, and community needs allows us to deliver high-quality results that feel right at home in your neighborhood.
What makes us the preferred choice:
More Than 40 Years of Experience – Building trust across the East Bay since 1983
Integrated Design/Build Team – One dedicated team from start to finish
Superior Craftsmanship – We use premium materials and proven construction methods
Eco-Friendly Building Options – Energy-efficient upgrades and sustainable construction practices
Hassle-Free Project Management – We take care of permits, inspections, and scheduling so you don’t have to
Check out our Residential Project Portfolio to see how we’ve transformed homes just like yours.
Seamless Design, Flawless Execution
Whether you’re building up, extending out, or adding a fully detached ADU, we manage every aspect of the project. From architectural planning and permit handling to material selection and final walkthroughs, our process is built for efficiency, clarity, and lasting satisfaction.
Learn more about who we are and what we believe in by visiting our About Us page.
Ready To Expand Your Home In San Ramon?
Stop searching for a “home addition contractor near me” and choose a team that’s been serving San Ramon homeowners for decades. Contact Mares & Dow Construction & Skylights today to schedule your free consultation and discover what’s possible for your home. Get in touch today!
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