ADU Construction in Hidden Hills
Hidden Hills ADUs and garage conversions drawn around fire hazard mapping, with ember-resistant roofs, vents and glass and a cleared strip around the walls.
"Can the unit go out by the trees at the back?" is a fair question on a first walk of a Hidden Hills parcel, and the answer starts with fire mapping. Some Hidden Hills parcels fall inside mapped fire hazard zones, where ember-resistance rules can ask for clear ground around new walls. We check whether yours is one of them and measure what grows near the spot, then draw the ADU, file it and build it.
Trees, hedges and the ground around the unit
Under ember-resistance rules, what grows or stands a few feet from the walls counts along with the walls themselves. If your lot is mapped, the strip right around the unit may need to stay free of dense shrubs, bark mulch and wood fencing, and limbs that reach over the roof may need trimming back. A spot under a big canopy means more pruning and raking to keep that strip clear. We tape the distance from each trunk, hedge and fence to the proposed walls and write those numbers on the site plan. Sometimes sliding the unit a short way toward open ground settles it. A gravel or concrete band along the foundation keeps leaf litter off the siding.
The shell, the review and the quote
On a mapped parcel, the reviewer looks hard at every opening. We draw a Class A roof, attic vents built to a listed ember-resistant standard, enclosed eaves with noncombustible soffit board and walls in cement plaster or fiber cement. Windows get tempered panes, and gutters get metal guards so dry leaves cannot collect in them. Those choices also answer the strong sun and dry wind of inland lots. We submit the set to the building department that serves Hidden Hills, answer its comments and call for inspections. Before pricing, we open any wall or slab the work touches and show you. On your quote the drawings stand alone as one figure, and what the agency charges is listed apart.
ADU Construction in Hidden Hills: questions
That depends on the yard left once the setback lines and the spacing between the house and a new building are drawn. On a Hidden Hills lot under ember rules, the cleared band around the unit and nearby trees take more of that ground. A freestanding cottage, an addition joined to the house or a garage turned into rooms can each work, and we sketch each option.
Our set covers a ground-floor unit kept within 500 square feet. For a fire-mapped Hidden Hills parcel, the site plan records our taped distances to trees, hedges and fences, and the exterior wall drawings list each vent, soffit and window product so the reviewer can hold them up against ember rules.
It may, once we have looked over the shell. We sound the slab, check its edges for damp, open a small patch of wall to inspect studs and the bottom plate, and measure headroom. On a mapped Hidden Hills lot, the wall that fills the old car opening gets ember-resistant siding and a tempered window, and any garage vents get fine metal mesh.
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Ask for a written quote or a call back. If photos would help, we ask for them when we reply.