New Construction in Hidden Hills
Hidden Hills new houses detailed to shed rain at roof, wall, slab and grade, with ember-ready gutters on mapped parcels and an ADU on the same plan.
Rain reaching a new Hidden Hills house meets its first defense at the roof edge, where a drip edge carries water past the fascia and into a gutter matched to the roof above it. From there, downspouts discharge into solid pipe that runs to an approved outlet, and finished grade falls away from the foundation on every side. On a parcel the fire hazard map covers, metal gutters with guards keep leaves from turning into fuel.
Keeping walls and slabs dry
Inside the wall, a drainage plane of building paper or housewrap sits behind the cladding, lapped so water runs down and out. Stucco gets a weep screed at its base set above finished grade, and each window has a pan under the sill and flashing over the head. Beneath the slab, a capillary break of crushed rock and a vapor retarder keep ground moisture out of the floor. Where a lower roof dies into a wall, a diverter at its downslope end steers runoff away from the siding. The ADU uses the same details, drawn on the same sheets.
Site drainage and plan review
On a lot with fall, a swale above the house intercepts runoff from higher ground before it reaches the foundation, and a retaining wall gets a drain and gravel behind it. The drainage plan shows every outlet and the slopes between them. The building department that serves Hidden Hills reviews it with the soils report, the structure and the energy forms, and on mapped parcels with the wildfire details such as screened attic vents and a Class A roof. Fire department access for a long driveway may also be part of that review.
New Construction in Hidden Hills: common questions
A unit drawn alongside the house lets one drainage plan cover both roofs and pads, and lets the ember-resistant details match where the parcel is mapped. Its location can respect zoning setbacks and keep a clear path from the drive. Adding a unit later can mean rerouting drain lines through landscaping that is already finished.
Before excavation, the lot is surveyed, the soils engineer drills borings, and the fire hazard status of the parcel is confirmed. Architecture, structure, energy and drainage drawings then go to the city's plan reviewers. Utilities to any existing house are cut, that house is demolished on its own permit, and footing work starts with the building permit in hand.
Hidden Hills houses meet the state building, energy and CALGreen standards. Mapped parcels add the wildfire chapter, which covers roofing, vents, eaves, decking and glazing. City zoning sets height and setbacks, and grading and drainage plans answer to city rules covering any cut, fill or runoff on the lot.
New Construction in other cities
More we build in Hidden Hills
Start your new construction in Hidden Hills
Tell us about the property and the project. We reply with what it involves and how we would price it.