Walnut, Los Angeles County

Decks, Additions and Foundation Work in Walnut

Deck footings, patio covers, additions and foundation checks in Walnut, starting with a look at drainage, soil and the slab or crawlspace under the house.

Tell us about the lot and the job

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On a first visit to a Walnut home, we start at the downspouts. Where roof water lands, whether it pools against the foundation and which way the ground carries it tells us a lot about the soil conditions under a planned deck or addition. Next comes the crawlspace or slab edge, where we look for cracks, settlement and moisture before measuring anything for design or quoting the job.

Under the floor

In a raised foundation, we crawl the full length to check sill plates, anchor bolts, posts and the condition of the girders. Cracked stem walls or a sill without bolts tell the engineer the existing structure needs work before any new load joins it. On a slab, we look for cracks wider than a hairline, uneven floors inside and signs of moisture at the edges. These findings shape whether an addition can tie into the old foundation or needs a separate footing line along the connection.

Planning the yard work

If the lot steps down from the house, a deck may need taller posts on concrete piers, with bracing sized by the engineer. A patio cover attached to the wall needs a solid ledger connection, so we expose a section of siding to check what sits behind it. Grading is set so water runs away from footings, with drains added where the ground holds it. Diamond Bar, Rowland Heights, Covina, West Covina, Hacienda Heights and La Habra Heights work begins with this same visit.

Building in Walnut?

Send the address and the job, and a builder will arrange a visit to read the lot.