proudly serving the south bay Since 1991
Home Additions in The South Bay Area
When you love your neighborhood but need more room, an addition is often smarter than moving — especially in the South Bay. Bella Casa Builders designs and builds additions that look like they were always part of the home.
Additions That Match Your Home
The mark of a great addition is that you can’t tell where the old home ends and the new one begins. Our design-build team matches rooflines, finishes and proportions so the new space feels original — inside and out.
OUR SERVICE
Types of Additions We Build
Room and single-story additions
Add the extra space your family needs without changing your home's footprint dramatically.
Second-story additions
Build up instead of out to gain a whole new level of living space.
Kitchen and primary-suite expansions
Give your most-used rooms the room to breathe they've been missing.
In-law and multi-generational suites
Create comfortable, private space for extended family or guests.
WHY CHOOSE US?
Additions Done Right, Start to Finish
We Navigate the Permits
Permitting rules differ across the South Bay's many cities, and we manage that process so you don't have to.
Seamless, Not Bolted-On
We match rooflines, finishes, and proportions so your addition looks like it was always there.
Built Around Your Life
We plan construction to minimize disruption while you're living at home.
One Team, One Point of Contact
Design through build handled under one roof, so nothing falls through the cracks.
Reviews From Homeowners Across the South Bay
What Our Clients Say About Bella Casa Builders
Ultimately, our client referrals and positive reviews are the yardsticks upon which we measure our success. Thank you for allowing us to serve you.
areas we serve
Proudly Service
the South Bay Area
Bella Casa Builders proudly serves homeowners in Gilroy, Morgan Hill, San Jose, Saratoga, Cupertino, Sunnyvale, Mountain View, Palo Alto & Atherton
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