Learning Center · Foundations
Foundations & Slabs
Foundation types, slab construction, warning signs, and what settlement actually looks like.
Foundation work carries a different weight than flatwork. A patio that fails is an inconvenience and a cost. A foundation that fails is a structural problem, an insurance conversation, and often an engineer's report before anyone can pour anything.
These guides cover how a slab-on-grade foundation is actually built, what the expansive clay soils across parts of Santa Clara and Alameda counties do to it seasonally, which warning signs warrant a professional assessment, and which ones are cosmetic.
Where a guide says to involve a structural engineer, take it seriously. We'd rather lose the job than pour over a problem we can't see.
Every guide in Foundations
Most readTypes of foundations
Slab-on-grade, raised floor, and basement — how each is built, what each costs, and which suits Bay Area conditions.
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Slab-on-grade explained
How a slab foundation is built layer by layer, what each layer does, and where quality problems hide.
Read the guide
Most readFoundation warning signs
Which cracks, sticking doors, and sloping floors actually matter — and which are just an old house being an old house.
Read the guide
Foundation settlement
Expansive clay, poor compaction, water, and trees — the four mechanisms behind almost all foundation movement in the Bay Area.
Read the guideOther topics in the learning center
All topicsPlanning foundations?
Free written estimates across San Jose & the greater Bay Area — with the specification stated, not just a price.