New Construction in West Hollywood
New West Hollywood houses with downspouts, area drains and paving planned to carry water to the street, and any ADU drawn on the same drainage plan.
Curb outlets, area drains and solid pipe carry the water away from a new West Hollywood house. Each downspout connects to buried pipe, paving beside the walls tilts away from the foundation, and the water exits at the street or into a planter that slows it. Where side yards are narrow, those lines share the ground with gas and power, so all of them are drawn together on one sheet. An ADU adds its own roof to the count.
Ground moisture and wall layers
Water also comes from below. A vapor retarder laid over a capillary break of crushed rock keeps ground moisture out of the slab and away from the flooring. At the walls, the weather barrier laps over each window's flashing from above, so any water that gets behind the cladding runs down and out at the base. Doors at grade sit on sloped sill pans. Where a basement or a lower floor goes into the ground, those walls get waterproofing on the outside face and a drain at the footing that leads to a pump or an outlet.
What the city checks
The City of West Hollywood building and safety staff read the drainage plan along with the structure and the energy forms. They look for runoff aimed at the street, grades left as they are at the property line and any measures the stormwater rules call for on site, such as a planter or a permeable walk. Permit conditions can also cover work hours, use of the street and protection of a wall that stands close to the line. An ADU on the parcel appears on the same drainage sheet, with its downspouts shown.
New Construction in West Hollywood: common questions
Where zoning lets the parcel hold a unit, placing it in the first plan shows whether its entry, its utility connection and the drain path for its roof all fit beside the house. Those lines are easiest to settle while the main house can still move on paper, and the unit's own roof water can join the same outlet.
Staging comes up early on a West Hollywood job: where deliveries stop and where the dumpster sits. Survey and soils work run in parallel with that planning, then design and engineering go to the city for plan check. An existing house is demolished once its utilities are disconnected and the permits are issued, and digging for the footings waits on the building permit.
West Hollywood zoning controls height, setbacks and parking, and a permit can carry conditions on hours and street use. The house is held to California's structural, energy and green building rules, the city's stormwater requirements apply to the paving and drains, and an ADU must satisfy state law plus West Hollywood's own unit standards.
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