New Construction in North Hills
Keeping water away from a new house in North Hills: clearance at the base of the walls, grade, and drainage planned alongside an ADU.
Stucco has to stop above the ground. Code asks the weep screed at the bottom of a plaster wall to sit at least 4 inches above bare earth and 2 inches above paving, so water has room to drain and the wall base stays dry. On a new North Hills house that clearance decides the finished grade around the whole building, and it carries over to an ADU on the lot.
Setting the grade around the walls
A bed of soil piled against plaster wicks moisture upward and lets pests reach the framing. The grading plan keeps soil and paving below the weep screed line and slopes the ground away from the walls. Concrete walkways and patios are set to fall away from the doors. Planting beds are shaped so irrigation water leaves them without running toward the foundation. Getting these levels right at the start takes a few lines on a drawing, while fixing them after landscaping tears up finished work.
Doors, thresholds and the ADU
The lowest openings in a house, often the patio doors, are where water finds its way in most easily. Thresholds are set with a pan and a sloped sill, and the concrete outside falls away from them. An ADU follows the same rules, and its floor height is chosen so water from the yard cannot reach the entry. LADBS reviews the grading and drainage on the plot plan, and a stormwater requirement may call for runoff to be handled on the lot.
New Construction in North Hills: common questions
Yes, if the lot can hold a second unit. Planning both together lets a single grading plan handle water from the house, the unit and the yard, with shared drains and a consistent finished floor height. Zoning decides how much the lot can hold, and that is checked before drawing begins.
Survey, soil investigation and a search for buried utilities come first. Design then covers layout, structure and energy, with the grading plan drawn alongside. Review at LADBS comes next, and excavation begins after the permit issues and erosion controls are installed.
Plaster clearances, flashing and sill details come from the residential code, while the energy and green codes add solar panels, sprinklers and water-saving fixtures. Height and yard limits come from zoning. A stormwater requirement applies, and hillside rules enter if the lot slopes.
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