When building slab foundations, the concrete pour comes after the footings have set and before walls are erected. Dirt is compacted and backfilled with 4 to 6 inches of gravel.

Slab foundations are also resistant to mold, mildew, ... Crawl space foundations are built between 18 inches and four feet above the ground with exterior support walls.

A foundation system that sports a crawl space is indeed a step or two above a slab foundation. Generally speaking, a footing is poured and short foundation walls are built to support the home.

Slab and foundation systems supported on soils with high clay contents will require heavier foundations than those constructed on lower clay soils. Drilled piers . Drilled piers, ...

Monolithic Concrete Slab: $13,000; Stem Wall Concrete Slab: $14,000 (requires more labor, excavation and material); Pier and Beam/Crawl Space: $21,000 Pier and beam foundations are uncommon and ...

Slab foundations cost about $10,000 less than those with a basement or crawlspace. A lower foundation is more accessible for residents with limited mobility. Cons ...

Pier and beam foundation: This foundation is built above the ground and consists of girder beams supported by concrete or masonry piers.That elevation (which puts the home at least 18 inches above ...