Turn the garage into a real,
permitted Roseville ADU.

This is where most Roseville conversions live or die. A garage slab was poured to park a car, not to carry a heated, occupied dwelling, and Placer clay under it doesn't help. Plenty of the floors I've walked — older detached garages off the alleys in Old Roseville, newer attached ones out in Fiddyment — sit four inches thick with no rebar, have shallow perimeter footings, or slope an inch toward where the door used to be so rain drained out. For habitable use that often means underpinning the perimeter, cutting in new footings, or pouring a fresh slab over the top. It's the single line item that swings a conversion budget the hardest. We core-test and check the grade on the first visit so the price isn't a guess.

Three Roseville-specific things shape a conversion. First, this is Placer County, not Sacramento County, and the permit goes through the City of Roseville counter — its own plan-check queue and fee schedule. Second, parking: California dropped the requirement to replace the off-street spaces you lose by converting a garage, so you no longer have to carve a new pad out of the front yard. That one change made thousands of these pencil. Third, fire walls — a detached garage sitting tight to the property line, common on older Old Roseville alley lots, can trigger one-hour fire-rated wall assemblies on the near side. And the detail that catches everyone: power here is Roseville Electric, the city's own utility, not PG&E, with City of Roseville water and sewer behind it. We confirm all of it against your parcel up front.