Single-Family Lots (R-1)
Up to 1,000 sq ft, plus a Junior ADU. Standard setback and height limits apply, your free feasibility study confirms the exact numbers for your lot.
Turn Your Backyard Into Extra Income or Room for Family
Free feasibility study · No obligation · Answers in one call
Planning a backyard ADU in Cupertino? Here are the four city rules that shape a detached unit on a single-family lot.
Detached ADU, Single-Family Lot · Source: City of Cupertino
One team handles the entire process under one roof, so you don't have to coordinate a separate architect, permit expediter, and contractor yourself.
Every floor plan includes architectural drawings, structural engineering, and Title 24 compliance.
We manage every step of design, permitting, and construction, so you don't have to navigate city rules on your own.
Apex Homes reviews your lot's zoning, setbacks, and utility hookups before any commitment.
Choose from Apex Homes' Cupertino-ready floor plans, or go fully custom.
Apex Homes compiles and submits your complete permit package to the city.
Apex Homes monitors the review and responds directly to any city comments.
Apex Homes manages the full build through final sign-off.
One team, all-in-one: design, permits, and construction, without you having to coordinate a separate architect, expediter, or contractor.
Book a Free ConsultationUp to 1,000 sq ft, plus a Junior ADU. Standard setback and height limits apply, your free feasibility study confirms the exact numbers for your lot.
Up to two detached ADUs, each up to 1,200 sq ft, with options to convert existing garage or storage space.
Moving is expensive, stressful, and disruptive. A new mortgage at today's rates. A bidding war you might not win. A new neighborhood to learn, new schools, new everything. And even after all that, there's no guarantee the next house actually fits your family any better than this one does.
Add the room your family needs without a new mortgage, a new school district, or goodbye to the neighbors you know. It's built right where you already live.
Skip the bidding wars and move-in surprises. You get a fixed price and a known outcome, on the property you already know.
Give parents getting older or kids moving back their own front door and their own space, close enough to see every day.
Every year that yard sits unused in Cupertino is rent, equity, and space someone in your family could actually be using.
Left on the table. That's what a well-built two-bedroom ADU could be earning you right now, driven by steady demand from Cupertino's tech employers.
In equity your property isn't capturing yet. A legal, permitted ADU is one of the few upgrades that adds this much value to a Cupertino home.
Without it, aging parents, adult kids, or long-term guests are stuck choosing between crowding your home or leaving Cupertino altogether.
None of that has to stay true. Here's what changes once you build.
Design-builders, general contractors, and prefab vendors each cover part of the job. Apex Homes covers all of it, in-house.
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Apex Homes builds ADUs across 20+ Silicon Valley and Bay Area cities. Find your city below for local pricing, regulations, and permitting timelines.
"I'm usually stingy with five-star reviews, but Apex Homes absolutely rocks. From the first call, they treated my scattershot sketches like gold: polished the design, wrangled the permits so I never saw City Hall, and kept every penny transparent."
Meredith Munger · Google Review
"The most professional people you will meet. They know what they are doing."
Bao Tran · Google Review
"Best team to have on your side to guide you through your home renovation. Extremely professional and knowledgeable."
Laurie Darling · Google Review
"Aimee is so personal and knowledgeable! Explains all the questions I could ever think of."
Eva Panina · Google Review
A look at completed Apex Homes ADU builds across the Bay Area.
service includes:
A 991 sq ft, 3 bed / 2 bath detached ADU in San Jose, built on Apex Homes' standard pre-approved 991 3B2B plan after demolition of an aging 850 sq ft accessory structure, with a full electrical service upgrade on a lot flagged for liquefaction.
service includes:
991 sq ft, 3 bed / 2 bath detached ADU in San Jose, built after full demolition of an existing garage on a compact 7,208 sq ft lot in a liquefaction zone, with a full electrical service upgrade and a brand new dedicated ADU meter.
service includes:
A 495 sq ft, 1 bed / 1 bath detached Customized ADU in San Jose, built for multi-generational family living on a spacious 13,200 sq ft lot in a Wildland-Urban Interface zone, with Class A fire-resistant construction and a full residential fire sprinkler system.
service includes:
A 991 sq ft 3-bed / 2-bath detached ADU in San Jose, fully condo-converted under AB 1033 and ready for separate sale — either the main house or the ADU can be acquired, financed, and resold on its own.
Free feasibility study: zoning, buildable size, and matching floor plans in one call. No obligation.