Upside ADU

What is an ADU and what does it cost in Sacramento?

An accessory dwelling unit (ADU) is a self-contained second home with a kitchen, bath, and private entrance on a single-family lot. In Sacramento, most ADUs cost $165,000-$500,000 turnkey in 2026, or roughly $250-$360 per square foot for a detached build, with garage conversions starting near $95,000.Updated June 2026 · Upside ADUWhat we build

What do you want to build?

What do you want to build?Detached ADUPopularGarage ConversionAttached ADUJunior ADUMultigen ADUNot sure yetTap a card to continue. We'll help you figure out the best fit.After the build

Don't want to be a landlord?

We're builders first — but we won't leave you stuck running a rental. When your ADU is move-in ready, we'll introduce you to vetted Sacramento property managers we trust to lease it, screen tenants, and handle the day-to-day.Vetted, local property-management partnersCompletely optional — plenty of owners self-manageHonest rent & ROI guidance before you buildHow renting it out works

What can you build on your lot?

Adjust lot size and city to see your buildable ADU size, estimated cost range, and typical rent — instantly.

What fits on my lot?

Adjust your lot size and city to see what you can build and what it pencils out to.Lot size6,000 sq ft2,000 sq ft15,000 sq ftCitySacramento — Sacramento CountyElk Grove — Sacramento CountyRoseville — Placer CountyFolsom — Sacramento CountyRocklin — Placer CountyEl Dorado Hills — El Dorado CountyCitrus Heights — Sacramento CountyCarmichael — Sacramento CountyFair Oaks — Sacramento CountyOrangevale — Sacramento.