Garage ADUs in San Jose

A garage is built to shelter a car, not a person. Bringing it up to habitable standard is real construction work, and we would rather set the expectation honestly up front than surprise you at framing. The scope on a typical garage conversion looks like this:

• Evaluating the existing slab. Older San Jose garages often have a slab that slopes toward the door, has no vapor barrier under it, or has cracked and settled. We either level and seal it or build a raised, insulated floor system over it.
• Raising the floor to match the rest of the house where the garage sits lower, which also gives us a place to run drain lines.
• Insulating walls, ceiling, and floor to current energy code, then drywalling and finishing.
• Removing the garage door and framing a proper exterior wall with windows and an entry door in its place.
• Meeting egress requirements, so every sleeping area has a window or door that opens to the outside at the required size.
• Running new plumbing for a full bathroom and kitchenette, including a sewer connection and venting.
• Electrical: new circuits, and in most cases a main panel upgrade, since a 1950s or 1960s panel rarely has room for a second dwelling.
• Confirming ceiling height. Some garages, especially ones with low headers or exposed trusses, need structural work to reach the minimum clear height.

We walk the garage before we quote anything, because slab condition and ceiling height are the two things that decide whether a conversion is straightforward or needs engineering.

For years, converting a garage meant giving up covered parking and then building replacement parking somewhere else on the lot, which killed a lot of projects. State law changed that. In most cases, a garage conversion to an ADU no longer triggers a replacement parking requirement, and many properties near transit are exempt from ADU parking requirements altogether. This is one of the biggest reasons garage conversions took off across San Jose. We keep up with how these rules apply locally, and we have written more about it in our guide to navigating ADU law.

We are Mola Construction & ADU, a licensed general contracting company based on Fruitdale Avenue in San Jose. We are owner-operated by Becir Molabecirovic, and we take on a limited number of projects at a time on purpose. Our portfolio includes whole-house remodels in San Jose, Los Altos, and Portola Valley, and we build ADUs the same way we build a primary residence: correct framing, correct waterproofing, correct finish work.

Being local matters here. We know how the older housing stock around Willow Glen, Rose Garden, and the Cambrian area was built, what tends to be hiding behind the drywall, and how San Jose inspectors read a plan set.