Hawthorne, Los Angeles County

Second Stories, Additions and Decks in Hawthorne

Second stories, room additions and decks in Hawthorne, planned for compact urban parcels with footings dug safely beside the neighbor's foundation.

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Hawthorne falls in an urban part of Los Angeles County, and an urban parcel in general leaves little open ground around a house. That frames the structural choices from the start. A new room may have to go up over the existing floor, a deck may need to fit a narrow side or rear yard, and any footing near the property line has to be dug with the next foundation in mind. Each of those is planned around the lot as measured.

Going up over a single story

Before a second floor goes on, an engineer checks whether the existing walls and footings can carry it. Where they fall short, new shear walls with hold-downs are added below, and posts under the main beams get their own pad footings. The roof comes off in stages so the house can be closed against rain each night. Stairs take floor area from the level below, so their spot is fixed early in the layout. Hawthorne reviews the structural set at its city building counter, and Gardena, Inglewood and El Segundo each handle their own permits.

Footings beside a neighbor's wall

When a new footing has to sit close to the adjoining house, we excavate in short sections so the neighboring soil never stands unsupported for long. The engineer may call for an offset footing or a grade beam that keeps the added load away from the line. Hard sun and dry wind on an open urban yard pull moisture from fresh concrete, so each pour is kept damp while it cures. Runoff from new roofs and decks is piped to the street and kept out of the shared side yard, where it could soften soil under both houses.

Building in Hawthorne?

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