A standalone backyard home
built for Elk Grove lots.

Here's the thing people get wrong. Elk Grove incorporated back in 2000, so it runs its own planning and building department — your detached ADU permit goes through the City of Elk Grove, not Sacramento County. That matters for timelines, fees, and how they read state ADU law. If you're in Laguna, Laguna West, Stonelake or East Franklin, you're almost certainly in an HOA with Mello-Roos special taxes layered on, and the HOA review runs parallel to the city. Out toward Sheldon and Wilton it flips — bigger rural lots, and a septic system that needs county-style sign-off before the added bedroom is approved. We handle both tracks.

A detached unit needs its own utility runs trenched out from the house: water, sewer, and a SMUD electrical feed, sometimes a sub-panel sized for a heat pump and a small kitchen. We trench, sleeve, and inspect before anything gets backfilled. The foundation is the part I won't shortcut. The Elk Grove valley floor is flat, expansive clay — soil that swells when wet and shrinks when dry — so even a 600 sq ft footprint gets engineered for that movement instead of a generic slab pour. Usually that's a stiffened post-tension or a reinforced mat with the right perimeter depth. It costs a bit more up front. It keeps the floor from cracking later.