Same Address, More Space
No new mortgage, no new school district, no goodbye to the Rancho Cucamonga neighbors you know. Just more space, right where you are.
Turn Your Backyard Into Extra Income or Room for Family
Free feasibility study · No obligation · Answers in one call
Rancho Cucamonga is one of the Inland Empire's most established master-planned communities, built on the old Cucamonga Valley wine country along the historic Route 66 corridor. Family-oriented, well-maintained, and still growing, it's a city where homeowners tend to stay long enough to actually use a second unit, whether that's rental income or space for the next generation.
No new mortgage, no new school district, no goodbye to the Rancho Cucamonga neighbors you know. Just more space, right where you are.
No bidding wars, no move-in surprises, no guessing what a new house actually needs. Just a fixed price, on the Rancho Cucamonga property you already know.
Parents, grown kids, or whoever needs it get their own front door and their own space, close enough to see every day.
One team handles the entire process under one roof, so you don't have to coordinate a separate architect, permit expediter, and contractor with the City of Rancho Cucamonga yourself.
We manage every step of design, permitting, and construction, so you don't have to navigate the City of Rancho Cucamonga's process on your own. Pre-approved designs the city has already reviewed compress the time between application and approval.
Apex Homes reviews your lot's zoning, setbacks, and utility hookups before any commitment.
Choose from Apex Homes' Rancho Cucamonga-ready floor plans, or go fully custom.
Apex Homes compiles and submits your complete permit package to the City of Rancho Cucamonga.
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 ConsultationOne detached or attached ADU plus one Junior ADU per lot. ADUs up to 1,200 sq ft or 50% of the primary dwelling's floor area, whichever is less; JADUs capped at 500 sq ft. Setbacks run 4 ft minimum from side and rear property lines; height caps at 16 ft for detached ADUs. A minimum 6 ft separation applies between the ADU and primary dwelling, and front-yard placement is only permitted when the backyard can't accommodate an 800 sq ft ADU with standard setbacks.
Up to two detached ADUs permitted on multi-family lots, plus conversion of existing non-livable space like garages and storage rooms, under the same size and setback standards.
Every year that yard sits unused in Rancho Cucamonga is rent, equity, and space someone in your family could actually be using.
Left on the table. That's a realistic range for a well-built two-bedroom ADU in Rancho Cucamonga, one of the stronger rental markets in the Inland Empire.
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 Rancho Cucamonga home.
Without it, aging parents, adult kids, or long-term guests are stuck choosing between crowding your home or leaving Rancho Cucamonga altogether.
None of that has to stay true. Here's what changes once you build.
Every floor plan includes architectural drawings, structural engineering, and Title 24 compliance, sized to fit Rancho Cucamonga's deeper master-planned lots.
Apex Homes builds ADUs across 20+ Silicon Valley and Southern California 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.
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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Free feasibility study: zoning, buildable size, and matching floor plans in one call. No obligation.
