JADU Construction — Junior Accessory Dwelling Unit Builder in the Bay Area

A Junior Accessory Dwelling Unit is a small, self-contained living space  no larger than 500 square feet that’s carved out of your existing home. It doesn’t sit in the backyard like a detached ADU. It doesn’t require a new foundation. Instead, it repurposes space that’s already part of your house a bedroom, a portion of a large floor plan, or an attached garage and transforms it into an independent unit with its own entrance and a small efficiency kitchen.

One of the things that makes JADUs unique is that they’re allowed to share a bathroom with the main residence. For a lot of families, that’s not a compromise it’s actually a practical advantage that keeps costs down and makes construction significantly simpler.

California has been pushing hard to create more housing, and JADUs are a direct result of that effort. The state has streamlined the approval process, reduced fees, and given homeowners more flexibility than ever before. For people living in communities like ours where housing costs are high and demand is relentless a JADU is one of the smartest moves you can make with the space you already own.

Here’s what makes this especially relevant if you live in our service area.

In Gilroy and Morgan Hill, many homes were built with generous floor plans and attached garages that are perfect JADU candidates. The lots are larger, the home footprints tend to be more spacious, and the cost of conversion is lower than in the more expensive parts of the Bay Area. We’ve worked with homeowners in both cities who were shocked at how little it cost to turn an unused bedroom and a section of hallway into a fully permitted living unit.

In Hollister, the opportunity is even more compelling. Construction costs in San Benito County are generally lower, but rental demand has been growing steadily as more workers commute into Santa Clara County. A JADU in Hollister is one of the highest-return, lowest-risk housing investments a homeowner can make right now.

Homeowners in Los Altos and Saratoga tend to approach JADUs a little differently. The homes in these communities are larger, the properties are more established, and the motivations are often less about rental income and more about family. We’ve built JADUs in Los Altos Hills for aging parents who wanted a private space on the same property, complete with their own entrance and a small kitchen for morning coffee. In Saratoga, we’ve seen families create elegant in-law suites that blend seamlessly with the rest of the home spaces that feel intentional, not improvised.

And in Los Gatos, the diversity of housing stock means the possibilities are wide open. Whether it’s a ranch-style home with an oversized attached garage or a two-story house with an underutilized ground floor, we’ve found creative solutions for homeowners across the town. Los Gatos families are particularly drawn to JADUs because they offer a way to keep adult children close while they save up in one of the most expensive housing markets in the country.

Whatever your reason rental income, family housing, a private guest suite, or simply making smarter use of your space a JADU gets it done faster and for less money than almost any other construction project.