What kind of foundation does an ADU in Redondo Beach sit on?

A slab ringed by reinforced footings is typical where the soil is firm, with the depth set by the soils report. Beside the main house, a Redondo Beach footing may step down or be poured in short sections to protect the old foundation. Anchors are stainless or galvanized.

Can a garage in Redondo Beach be converted without new footings?

Reusing the old footing is possible when it is deep enough and uncracked. We dig a test pit at a Redondo Beach garage to check. Where it passes, anchors and shear walls go in. Where the footing is shallow, new sections are poured, and work near the main house is staged so its foundation stays undisturbed.

Which ADUs in Redondo Beach does the plans package cover?

In Redondo Beach the package reaches as far as a one-level unit of 500 square feet. For a Redondo Beach lot, the foundation plan showing how the new footing meets the old one is in the package, as is the site plan. Bigger or two-story units are priced after we look at the lot.

ADU Construction in Redondo Beach

Redondo Beach ADUs with new footings planned around the main house foundation, corrosion-resistant hardware and inspections at each stage of the build.

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"Will digging the new footings crack anything on our house?" Before a Redondo Beach ADU is drawn, the answer starts with distance and depth. A trench close to the main house can undercut the old foundation if it goes deeper, so the engineer checks the gap between the two and the depth of each. Where they come close, the new footing steps down gradually or is dug and poured in short sections.

Protecting the main house during excavation

We expose the main house footing where the new unit will come near it and measure how deep it goes. If the new footing has to sit lower, the engineer details how the trench steps down beside the old one so the soil under the house stays in place. Where the unit attaches to the house, a separate footing with its own anchors can keep the two from pounding against each other in an earthquake, and a flexible joint closes the gap. Downspouts from both roofs are kept away from that joint.

Plan check and inspections in Redondo Beach

The city building department in Redondo Beach reviews the drawings and the engineer's numbers, and corrections come back in writing. We answer each one and resubmit. Once the permit issues, inspections follow the work, starting with footings and steel before the pour, then framing with every hold-down and nailing pattern exposed, then insulation and the final. If the parcel falls inside the coastal zone, a separate coastal approval may come first. Connectors are stainless or hot-dip galvanized for coastal air, and the inspector sees them at framing.

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