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Home Remodeling & Construction in Sunnyvale
Sunnyvale sits at the center of Silicon Valley, home to tech campuses and a thriving community seeking modern, functional living spaces.
Why Choose Oria Builders in Sunnyvale
- Ranch home modernization and open floor plan conversions
- Smart home technology integration specialists
- Energy-efficient and solar-ready construction
- ADU construction for rental income or home offices
Services in Sunnyvale
Answers for Sunnyvale Homeowners
- How much does an ADU cost in the Bay Area?
In the San Francisco Bay Area and Silicon Valley, an ADU typically costs roughly $200,000 to $450,000 for a garage conversion or compact detached unit and $450,000 to $700,000 or more for a larger detached unit of 800 to 1,200 square feet in 2026. Bay Area labor rates, city fees and utility connection costs run above the Los Angeles market, and hillside or small-lot sites in cities such as Palo Alto, Los Altos and Menlo Park push the range higher. - How much does a 400-square-foot ADU cost?
A 400-square-foot ADU in Los Angeles or the San Francisco Bay Area typically costs roughly $150,000 to $300,000 in 2026, which works out to about $375 to $750 per square foot depending on whether it is a garage conversion or a new detached build, how far the utilities have to run, and the finish level. Small units cost more per square foot than large ones because the kitchen, bathroom and utility connections are fixed costs no matter the size. - Do I need a permit to remodel a bathroom in California?
Usually yes. In California a bathroom remodel needs a building permit whenever you move or add plumbing, change electrical wiring, alter walls, or replace a tub with a shower, which covers most real remodels. Purely cosmetic work such as painting, swapping a faucet or vanity in the same spot, or replacing a toilet typically does not require a permit, though cities differ, so confirm with your local building department. - Can I live in my home during a remodel?
Often yes. Most homeowners stay in the house during a kitchen or single-bathroom remodel, a room addition or an ADU build, because the work can be sealed off from the living areas with dust barriers and a temporary kitchen. A whole-home remodel, a second-story addition that opens the roof, or any project that cuts power, water or the only bathroom for weeks usually means moving out for part or all of the job. - Do I need an architect for a remodel in California?
Not always. California law allows plans for most single-family homes of wood-frame construction up to two stories, and for non-structural alterations, to be prepared by a licensed contractor or an unlicensed designer, with a California-licensed engineer stamping the structural calculations. You need a licensed architect when the project goes beyond those limits, such as larger multifamily buildings, non-wood structural systems or designs a city's planning process specifically requires an architect to sign. - How do I verify a contractor's license in California?
Go to the Contractors State License Board website at cslb.ca.gov, choose Check a License, and search by license number, business name or personal name. The record shows whether the license is active, its classification (a B license is a general building contractor), the contractor's bond and workers' compensation status, and any complaints or disciplinary actions. Oria Builders is CSLB #1029255 and can be looked up the same way.
Articles About Sunnyvale
Neighborhoods We Serve in Sunnyvale
Sunnyvale West • Cherry Chase • Birdland • Lakewood Village
Local Office
Oria Builders Bay Area office: 100 S Murphy Ave, Sunnyvale, CA 94086 — office page