Concrete Slab Foundation
A monolithic or post-tensioned concrete pad poured directly on grade, supporting the home without a basement or crawlspace.
Quick answer
Concrete Slab Foundation: A monolithic or post-tensioned concrete pad poured directly on grade, supporting the home without a basement or crawlspace. Typical cost: $5–$15 per sq ft installed..
Why it matters
Slabs are the cheapest foundation but make plumbing repairs invasive — a $400 leak under a slab becomes a $5,000 jackhammer job.
Typical cost
$5–$15 per sq ft installed.
Pros
- • Lowest cost foundation
- • Excellent for radiant heat
- • No crawlspace moisture problems
Cons
- • Buried plumbing hard to access
- • Cold floors in northern climates
Common uses
- • Sun Belt and warm-climate construction
Alternatives
CrawlspaceFull basement
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Frequently asked questions
- Can slab plumbing leaks be fixed without breaking concrete?
- Sometimes — pipe lining or rerouting through walls/ceilings is often cheaper than slab jackhammering.
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Estimates and guidance are educational. Always confirm with a licensed local professional before making decisions.