Choosing Type of Foundation
If you are building a house without a basement, your foundation will either be a concrete slab or a crawlspace.
This is the simplest type of foundation. A crushed stone base is applied directly to the ground,
A slab foundation is significantly cheaper than a crawlspace.
In my own experience, I have found slab foundations to be between five to ten thousand dollars cheaper than a crawlspace on a three-thousand sq. ft. house.
Slab foundation houses are quite common in warmer climates.
There is no need for floor insulation.
The floor never squeaks or sags. A good slab foundation makes a very solid house.
Slabs may be formed with concrete block or wood framing.
I’ve found block framing to cost 10-15% more than wood framing.
Read more about Slabs & Crawlspace