Same Address, More Space
No subdividing, no changing your address, no altering the feel of a property that was never meant to be split up. Just more space, quietly added.
A Second Unit Built to Match Your Estate
Free feasibility study · No obligation · Answers in one call
Monte Sereno is one of the smallest, most private cities in California, a few hundred estate-sized lots tucked between Los Gatos and Saratoga with almost no turnover. Homeowners here aren't usually chasing rental yield; it's about keeping family close without changing how the property presents.
No subdividing, no changing your address, no altering the feel of a property that was never meant to be split up. Just more space, quietly added.
No bidding wars, no move-in surprises, no guessing what a new estate actually needs. Just a fixed price, on the Monte Sereno property you already own.
Aging parents or adult children get their own front door and their own space, without leaving the family compound.
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 Monte Sereno yourself.
We manage every step of design, permitting, and construction, so you don't have to navigate the City of Monte Sereno's process on your own.
Apex Homes reviews your lot's zoning, setbacks, and utility hookups before any commitment.
Choose from Apex Homes' floor plans, or go fully custom to match your estate.
Apex Homes compiles and submits your complete permit package to the City of Monte Sereno.
Apex Homes monitors the review and responds directly to any city comments.
Apex Homes manages the full build through final sign-off, built to match your home.
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 850 sq ft for a one-bedroom ADU, or 1,000 sq ft for two or more bedrooms, plus a Junior ADU option within the main home. Setbacks run roughly 4 ft minimum; height caps around 16 ft. Your free feasibility study confirms the exact numbers for your lot.
Monte Sereno is almost entirely single-family zoned; your free feasibility study will confirm whether any multi-unit provisions apply to your specific property.
On a lot this size in Monte Sereno, unused yard space isn't just idle, it's one of the most valuable pieces of the property.
In added property value. A legal, permitted ADU is one of the highest-return upgrades available on a Monte Sereno estate.
Apex designs Monte Sereno ADUs to sit discreetly on the lot, so the addition doesn't change how the property presents from the street.
A second unit lets aging parents or adult children stay on the property, with their own space, instead of relocating out of the family compound.
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, finished to match the quality of your Monte Sereno residence.
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, 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.
service includes:
Set on a corner lot in San Jose, this 983 sqft, two-story ADU is positioned at the rear of the property. It's a placement that lets a growing family live together today, and converts just as easily to a rental down the road.
service includes:
A 749 sq ft, 2-bed / 2-bath detached ADU in San Jose, built turnkey alongside a full remodel and ADU-title-conversion of the existing main house. The owner ends up with two independent rental units on a single 7,800 sq ft lot.
service includes:
A 1,200 sq ft, 3-bed / 2-bath detached ADU added to a duplex lot in central San Jose — taking the property from two income units to three, with the new ADU placed at the rear of a deep narrow lot and four mature trees preserved through construction.
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.
