The foundation carries the weight of the house and keeps it level for the long term. The right type depends on the lot.

Slab, Crawl Space and Basement

A slab foundation is a concrete pad poured at grade. A crawl space lifts the floor a few feet above the ground on short walls. A basement digs deeper to create usable space below the house.

Each has tradeoffs for access, moisture and cost, and your builder should explain them for your site.

Soil, Slope and Water

Soil and slope matter. Sloped lots often suit a walkout basement, flat lots often suit a slab or crawl space, and any lot needs a plan to move water away from the walls.

A site walk before the design is final helps you pick the right foundation.

Questions to Ask

Ask how the foundation will be drained, how the footings are sized and what the inspection steps are. Ask how moisture will be managed in a crawl space or basement.

Clear answers are a sign of careful work.