Start here

Before choosing a slab or raised foundation, gather the survey and ask an engineer what investigation your property needs.

Begin with evidence about the property

A foundation conversation should start with the lot you plan to use. Bring the survey, any previous investigation, and your proposed floor plan to the designer. Ask what information is missing before comparing prices.

The USDA NRCS Web Soil Survey provides mapped soil information for planning, and NRCS notes that some engineering applications need an onsite investigation. Treat the map as a starting point for questions, not a foundation design.

Ask what the soil does when moisture changes

NRCS describes Vertisols as soils with expanding clay that shrink as they dry and swell as they get wetter. That description is not a finding about your particular lot.

Ask the engineer which soil conditions were found, which foundation options they considered, and why they recommend one. Request a discussion of drainage, finished floor height, and the work needed to prepare the site.

Compare complete proposals

  • Ask each bidder to price the same engineer-approved drawings.
  • Identify which site preparation and drainage work is included.
  • Ask how utilities and future access have been considered.
  • Keep the report, drawings, and written scope together.

For a new house, bring these questions to our custom home building conversation. Start with the evidence available for your property and a list of decisions still to make.

Questions to bring to the conversation

Should I choose a foundation before buying plans?

Ask the foundation designer to review the property information before committing to a foundation type. Bring your survey and any existing soil report.

What should I bring to the first discussion?

Bring the property address, survey, available reports, and a sketch of the home you want. Mark questions about floor height, access, and drainage.

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