This project added a detached 991-square-foot, three-bedroom ADU at the rear of a long single-family lot, creating a separate rental unit with its own footprint, private yard space, side-yard access, and independent utilities.
Designed as an income property, the ADU followed a proven ROI-driven standard spec to keep scope, budget, and schedule under control. The project was completed in 140 days and built to support a condo conversion under California’s AB 1033 framework.
As part of the strategy, the main home and ADU were structured as two separately titled condominium units through a recorded condo map, CC&Rs, and HOA setup, creating a path for independent ownership, financing, or resale.
Can I sell my ADU separately from the main house in California？
In San Jose, yes. Under AB 1033, local governments can choose to allow a primary home and its ADU to be converted into separate condominium units, each with its own APN, title, financing, and resale potential.
Apex Homes completed San Jose’s first successful ADU condo minimum project, helping structure the main home and detached ADU as separately titled units from the beginning. We can help homeowners analyze feasibility, plan for condo conversion, coordinate the required documentation, and support the process all the way through separate sale strategy.
How long does it take to build a detached 3-bedroom ADU?
A detached 3-bedroom ADU typically takes about 4–6 months to build once construction starts, depending on the site condition, utility work, finish package, and how standardized the floor plan is. Pre-construction (including design, plan check, and permitting) usually adds another 2–6 months depending on the city.
For this 991 3B2B project in San Jose, the on-site build was completed in 140 calendar days because the project used a well-prepared plan, a clear finish package, and a tightly managed construction schedule. Apex Homes supports the full process from early feasibility and permitting to construction, utility planning, and long-term resale or rental strategy.
Does my ADU need its own separate utilities?
For a standard rental ADU, separate utilities are not always required. Many ADUs share water, sewer, or electrical service with the main house. However, if the owner wants the option to sell the ADU separately in the future, separate utilities are strongly recommended and often necessary for a successful condo conversion.
Apex Homes can help homeowners plan for this from day one. In this project, the ADU was built with its own electrical panel and meter, water service, and sewer connection, making separate ownership possible without costly retrofits later. We help evaluate whether your property can support this path and guide the project from feasibility to division and sale.
You’ve seen what’s possible—now let Apex Homes handle the details. From initial concept to precision construction, we build custom homes tailored perfectly to your lifestyle and future goals.
