San Jose is California's largest city by area — and one of its most ADU-active markets. With some of the highest median rents in the country and a massive workforce housing shortage, San Jose ADUs are consistently in demand. Peninsula Construction brings its proven design-build process to Silicon Valley homeowners.
San Jose's ADU program is one of California's most streamlined, with a dedicated ADU permit counter and pre-approved design templates. Peninsula Construction knows how to navigate the process efficiently and get your ADU to construction as quickly as possible.
Meet Richard RodriguezSan Jose allows both ADUs and JADUs on single-family lots, and many neighborhoods also allow multi-unit ADU development under SB 9. With rental demand from tech workers driving rates to $2,500–$4,000/month for ADU units, the return on investment in San Jose is exceptional.
Peninsula Construction builds all five ADU types in San Jose. We'll help you determine which type maximizes your property's potential.
A fully separate structure in your backyard. Maximum privacy and rental value. Custom designed to your lot.
Connected to your main home but with a separate entrance. Cost-effective with shared wall construction.
The most affordable ADU path. We convert your existing garage into a fully permitted living space.
Up to 500 sq ft carved out of your existing home. Lower cost, faster permits, great for in-law suites.
Maximize square footage on smaller lots by building up. Ideal for San Jose properties with limited yard space.
Not sure which ADU type is right for your San Jose property? We'll assess your lot and walk you through all your options — at no cost.
Get Free EvalMost contractors hand you off between designers, permit runners, and builders. Peninsula Construction handles everything under one roof — from your first site visit to your final walkthrough.
3 design options included with every estimate. We design your ADU to fit your property and your vision.
We handle all permit applications, city coordination, and inspections. You don't have to deal with the city.
Our crew builds your ADU with the quality of a custom home builder — not a tract developer. Every detail matters.
Final walkthrough, punch list, and sign-off. You get keys to a fully permitted, move-in ready ADU.
We'll assess your San Jose property, walk you through your ADU options, and give you a transparent all-in estimate. No pressure, no surprises.
Peninsula Construction builds ADUs throughout Santa Cruz, Monterey, San Benito & Santa Clara Counties.