ADU Construction in Monrovia
Monrovia ADUs planned room by room, starting with a working kitchen, with ember-resistant shells where mapped and care for the older main house.
Cooking, washing up and storing food all have to fit along a short run of wall in a Monrovia ADU, so we plan that kitchen first: a range on its own circuit, a sink on the wall facing the sewer route, a full-height refrigerator and enough counter to cook on. Placing it early tells us how the plumbing, venting and wiring run, and how the unit can sit beside the older main house without crowding its windows.
Rooms that work in a small footprint
The bathroom sits back to back with the kitchen where possible, so both share one wet wall and a short drain run. A stacked washer and dryer fits in a closet near the bath. The bedroom gets a window large enough for emergency escape, which the building code requires, plus closet space that leaves the living area whole. Ceilings are kept tall, since height makes a compact plan feel larger. Each room is laid out so its windows look at the yard, giving the main house and the unit their own privacy.
Ember details around those rooms
Lots in Monrovia that fall within a mapped fire hazard zone need an ember-resistant shell around those rooms: a Class A roof, screened vents, noncombustible cladding and tempered glass. The kitchen hood and bath fan terminations get ember-resistant caps as well. The building department checks these details, and the fire department may review access to the back of the lot. Inside the older house, any wall we open to reach the panel or plumbing is patched in plaster to match, with original trim set back in place.
About our ADU Construction serviceEverything we do in Monrovia
ADU Construction in Monrovia: common questions
The kitchen and bath drive the answer. Their loads go into a calculation against the main panel, their drains set the depth and fall of the new sewer connection, and their fixtures size the water line. An older house with a small service or galvanized pipe may need an upgrade first, and the written scope shows it.
A sound garage can hold the same rooms a new unit would, though its proportions shape the plan. We check the slab, footings and framing, then lay out the kitchen and bath to see whether they fit without moving walls. In a mapped fire hazard zone, the conversion also gets an ember-resistant exterior.
Inside, the unit can be fully new. Outside is where it borrows from the house: roof slope, overhang depth, window shape and the width of the trim around them. We match siding exposure and paint, so a visitor sees two buildings that belong together on one lot.
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Send the details and we will set up a walk-through and a written scope.