ADU & Room Addition Cupertino CA
Local design-and-build experts serving Cupertino homeowners. ADUs, room additions, kitchen and bathroom remodeling, all under one roof.
Local Expertise. Premium Craftsmanship. Built for Cupertino.
San Jose ADU & Room Addition is your local design-build team for ADU & Room Addition Cupertino CA projects. We work across every Cupertino neighborhood, from Rancho Rinconada and Monta Vista to Inspiration Heights and Garden Gate, designing and building attached ADUs, detached ADUs, garage conversions, and full room additions that match your home and lifestyle.
Our ADU & Room Addition Cupertino CA services cover the full scope under one roof: feasibility, design, City of Cupertino permits, construction, and final inspection. We also handle kitchen remodeling and bathroom remodeling, whole-home renovations, and exterior work so you keep one accountable contractor from start to finish.
Full-Service ADU, Room Addition, Kitchen and Bathroom Remodeling
Our four core services for Cupertino homeowners are ADU construction, room additions, kitchen remodeling, and bathroom remodeling. We also handle whole-home renovations and outdoor builds when they pair with the main project.
ADU Construction
Detached ADUs, attached units, garage conversions, and JADUs. Full-service work from feasibility and design to permits, construction, and final inspection. Built for rental income, family, or both.
Room Addition
Single-story bump-outs, second-story additions, primary suite expansions, and family room extensions. Seamlessly integrated with your existing home's architecture and systems.
Kitchen Remodeling
Open-concept layouts, custom cabinetry, quartz and natural stone counters, designer islands, and professional-grade appliances. We handle structural changes, electrical, plumbing, and finish work end-to-end.
Bathroom Remodeling
Walk-in showers, freestanding tubs, double vanities, heated floors, and custom tile. From a single guest bath refresh to a full luxury primary spa, we deliver bathrooms built to last.
Home Renovation
Whole-house renovations including foundation, framing, electrical, plumbing, HVAC, insulation, windows, doors, and finishes. We modernize older homes and bring them up to current code.
Deck & Patio Construction
Custom decks, covered patios, outdoor kitchens, pergolas, and exterior living spaces. Designed to extend your home's footprint and entertaining capacity year-round.
Serving Every Cupertino Neighborhood
We cover the entire 95014 ZIP code, from homes along Stevens Creek Boulevard to the south Cupertino hills.
Not sure if we cover your street? Give us a quick call at (650) 900-8598. We almost certainly do.
Cupertino Neighborhoods We Serve
A few of the Cupertino areas where we have recently completed projects:
The Difference Is in the Details
Building in Cupertino means working with a contractor who understands the local market, the local permits, and the local expectations for finish quality. Here is what sets San Jose ADU & Room Addition apart.
Local Permit Expertise
We know Cupertino's building department, plan-check workflow, and zoning quirks. Permits move faster because we submit complete, code-correct drawings the first time.
One Accountable Team
No subcontractor finger-pointing. Project managers, carpenters, plumbers, and electricians, all coordinated by us. One point of contact from kickoff to final walkthrough.
Fixed Quotes, No Surprises
You get a detailed, line-item proposal before signing anything. Change orders only happen when you request them, and they are priced transparently in writing.
Premium Finish Quality
Tight reveals, clean tile work, plumb walls, even paint. The finish work is what Cupertino homeowners notice, and what makes a remodel hold up for the next 20 years.
Clean Job Sites
Floor protection, daily cleanup, dust containment, and a locked, organized site every evening. Many of our Cupertino clients continue to live in their homes during construction.
Real Warranty Backing
Our workmanship warranty is written, transferable on resale, and we stand behind it. If something needs attention after we finish, we come back.
What Cupertino Homeowners Say About Us
Real reviews from real Cupertino clients, neighbors of yours who have lived through the project and would do it with us again.
"We hired the team to convert our garage into a fully permitted ADU for my parents. Living in Rancho Rinconada means the lots are small, but they designed a 600 sq ft unit that fits perfectly and matches our main house. They pulled the Cupertino permit faster than we expected and finished on schedule."
"Our 1970s Monta Vista kitchen was outdated. It felt closed off, dark, and the ceilings were low. They opened it up to the family room, raised the ceiling, and put in a custom island. The crew was punctual, neat, and easy to communicate with. Highest recommendation."
"We added a primary suite to our home off Stevens Creek and could not be happier. They handled the city design review, blended the addition into the existing roofline beautifully, and the new master bath is a dream. Worth every penny."
Common Questions From Cupertino Homeowners
If you do not see your question here, call or message us. We will answer it straight.
Do you serve homes throughout Cupertino, including Rancho Rinconada and Monta Vista?
How long does the Cupertino ADU permit process usually take?
Can you remodel mid-century post-and-beam homes in Cupertino?
How do Cupertino school boundaries affect ADU rental plans?
Are you familiar with Cupertino's setback and height limits for room additions?
Ready to Start Your Cupertino Project?
Get a free, no-obligation estimate from San Jose ADU & Room Addition, a local team that knows Cupertino inside and out. Most quotes scheduled within 48 hours.
📞 (650) 900-8598Request Free Estimate Online