Accessory Dwelling Unit (ADU) Builders in Cupertino, California
Expand Your Living Space and Property Value with a Custom ADU by Construction Remodeling In Bay Area
In a fast-growing community like Cupertino, California—where charm meets convenience and real estate is at a premium—making the most of your property has never been more important. One of the smartest ways homeowners in Cupertino are unlocking extra space and boosting property value is through Accessory Dwelling Units, also known as ADUs, in-law suites, backyard cottages, or secondary units.
At Construction Remodeling In Bay Area, we specialize in designing and building fully customized ADUs that fit seamlessly with your existing property. Whether you’re adding a rental unit, a guest house, a private home office, or a place for aging family members, we’re here to turn your vision into a high-quality, code-compliant structure that serves your long-term goals.
Frequently Asked Questions
ADU construction typically ranges from $150,000 to $350,000, depending on size, finishes, utility connections, and structural needs.
From planning to final inspection, most ADUs in Campbell take 6 to 9 months, though timelines vary based on design complexity and permitting.
Yes. We handle all permitting and ensure your ADU complies with Cupertino city regulations, zoning laws, and California state ADU codes.
Absolutely. We offer detached ADUs, garage conversions, attached units, and even basement transformations depending on your property layout.
Cupertino follows California’s updated ADU laws which eliminate most minimum lot size restrictions. We’ll evaluate your specific property during consultation.
BRANDS WE WORK WITH
Our ADU Construction Services in Cupertino
From concept to completion, we manage every aspect of your project with precision and care:
Design & Architectural Planning
We start by crafting a design that meets your space requirements, aesthetic preferences, and budget. Our team collaborates with architects and engineers to produce detailed, permit-ready plans.
Detached ADUs
Perfect for creating privacy and flexibility, detached ADUs are stand-alone buildings located in your backyard. Ideal for rentals or multigenerational living.
Garage Conversion ADUs
Transform your unused garage into a fully livable dwelling. We retrofit insulation, plumbing, HVAC, and finishes to meet all residential standards.
Attached ADUs & Interior Conversions
Need to maximize existing space? We convert basements, attics, or spare rooms into self-contained units with private entries, bathrooms, and kitchens.
Foundation, Framing & Utilities
We ensure your ADU has a solid foundation, expert framing, and fully integrated plumbing, electrical, and HVAC systems—all to code.
Custom Finishes & Fixtures
From cabinetry and flooring to tile, paint, and lighting, we install high-quality finishes that make your ADU as attractive as your main home.
Our Step-by-Step ADU Process in Cupertino
We’ve streamlined the ADU experience into a clear, stress-free process:
Free On-Site Consultation
We evaluate your property, discuss your goals, and explain local ADU guidelines. You’ll receive a tailored project estimate.Design & Permits
Our design team develops detailed plans and submits all necessary documents to the City of Cupertino for permit approval.Site Preparation & Foundation
We clear and prep the site, lay the foundation (slab or raised), and handle utility extensions and trenching as needed.Construction & Framing
Your ADU begins to take shape with expert framing, roof installation, window/door fitting, and core systems installation.Interior Work & Finishing Touches
We complete drywall, flooring, painting, cabinetry, and appliance installation—ensuring everything is move-in ready.Final Inspection & Handover
Once passed inspection, we walk you through the finished ADU and ensure you’re 100% satisfied.
Why Cupertino Homeowners Trust Construction Remodeling In Bay Area
Local ADU Experts
We’re experienced with Cupertino’s permitting process, zoning regulations, and architectural styles. We know how to get your project approved—and built—efficiently.End-to-End Service
You won’t need to hire multiple contractors. We handle everything in-house—from permitting to construction to finishing work.Transparent Pricing
Our quotes are clear, detailed, and competitive. No hidden fees or surprise add-ons.Licensed & Insured
We’re fully licensed, bonded, and insured in California. Your home and project are protected every step of the way.Customer-Focused Team
We communicate clearly, meet deadlines, and treat your property with the respect it deserves.
Let’s Bring Your Cupertino ADU Vision to Life
If you’re ready to expand your living space, earn rental income, or accommodate family members with independence, now is the time to build an ADU in Cupertino. With Construction Remodeling In Bay Area, you’ll get a partner who understands the process and delivers results you can rely on.
Contact us today to schedule your free ADU consultation in Cupertino, CA. Let’s unlock the full potential of your property—together.
Here is what our customers say
We highly recommend Ray and his team and look forward to when we do the family room and master bathroom next! Thank you CRIBA!! 🙂
P.S. fave material sources:
-Commercial grade vinyl wallpaper from Mayflowerwallpaper.com
-Integrated Corian countertop from Bay Custom Countertops
-Recessed ceiling lights with full-on and back-lit options from Amazon
-Porcelain wood tiles from Home Depot and wall tiles from Floor & Decor
Since this was my first time doing a remodeling project, I really appreciated how helpful they were with suggestions and guidance throughout the process. Their experience and attention to detail truly made a difference.
I highly recommend Ray and his team for any remodeling work and will definitely hire them again for future projects!
