New Construction in Winnetka with a Shared Driveway
One driveway for a new Winnetka house and a backyard unit: how its width, the utility trench under it and the path to the rear door are planned together.
"Can one driveway serve the house and a unit in the back?" On a Winnetka lot that question gets answered during the first walk, with a tape stretched across the side yard. The drive has to fit a car, leave a clear walk to the rear door and cover the trench that carries water, power and sewer to the unit. Settling all of it before design keeps the two buildings from competing for the same strip of ground.
Width, path and trench in one strip
A side yard does several jobs once a backyard unit is planned. Cars need a drive wide enough to open doors, and the unit needs a walkway that a visitor or a firefighter can follow at night without edging past parked cars. Under that same ground run the new water line, the sewer lateral for the unit and a conduit for its power. We fix the trench route before the drive is drawn, so the concrete goes down once and nothing gets cut open after final inspection. Path lighting is wired during the same pass.
How each ADU type changes the drive
Out at the rear, a detached unit needs the full path and its own utility runs. An attached unit can draw from the house panel and plumbing, which shortens the trench. A garage drawn so it can later become a unit gives up its parking without replacement spaces, because state law waives them for a converted garage. A JADU, carved from the house itself, asks only for a separate exterior door. Laying the four options side by side early shows how much paving each one takes from the yard. LADBS then reviews a site plan with the drive, the path and the unit drawn together.
New Construction in Winnetka: common questions
Drawing the unit in from the start lets the side yard, the trench and the panel size be planned once. Adding it after the house is finished tends to mean sawing new concrete and upsizing the electrical service. Zoning on the parcel decides whether a unit is allowed and how large it can be, so we confirm that before the floor plans are set.
Fieldwork leads: a boundary survey, soil borings and a check of the water, power and sewer at the street. Structural, energy and site drawings follow. Taking down any existing house needs its own demolition permit and utility disconnects. Once LADBS issues the building permit, erosion controls are placed around the work area and the footing trenches are dug.
Title 24 is the umbrella, and its residential, energy and green building parts apply in full to a new Winnetka house. In practice that means a solar array sized on the energy forms, fire sprinklers inside, water-saving fixtures and wiring ready for an electric vehicle charger. City zoning caps height and floor area and sets the yards, and LADBS also checks how stormwater is handled on the lot.
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