Last updated: September 24, 2026
What affects the price
Building an ADU involves several moving parts that shape your total budget. The biggest factor is whether you choose a prefabricated unit or a custom build on-site. Site preparation is also significant; if your land requires extensive grading, utility trenching, or foundation work, costs will climb. Your choice of finishes—like kitchen cabinetry, flooring, and siding materials—also shifts the bottom line. We help you navigate these variables to find a setup that fits your property. Exact pricing confirmed free on the call.
About this service
A modular ADU is built in a factory and then transported to your property to be assembled on a foundation. You should consider this if you want a faster construction timeline and less disruption in your backyard. Because the units are built off-site, they are often cost-effective and efficient. We help you choose the right model and ensure the site is ready for delivery. Exact pricing confirmed free on the call.
Frequently asked in Pomona
What is the cost to build an accessory dwelling unit in Pomona?
Are there homes with in-law suites available in Pomona?
What constitutes an emergency ADU situation?
What are the options for a prefabricated accessory dwelling unit in Pomona?
What's the best ADU option for my property in Pomona?
Can I find an accessory dwelling unit contractor in Pomona?
Are there accessory dwelling unit grants available in Pomona?
Also serving nearby: Chino · West Covina · Ontario · Rancho Cucamonga · Anaheim
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
Serving all of Pomona — population 145,502; about 6,330 residents per square mile across 23.0 sq mi. ZIP codes covered include 91766, 91767, 91768, 91769.
Neighborhoods served in Pomona: Downtown Pomona, West Pomona, East Pomona, Palomares Hills, Phillips Ranch — and every surrounding area.
Areas we serve
Browse by state, then city.
