Boundary surveys, elevations and site plans

Understand which document answers which question before choosing a foundation.

PlanSet Designs editorial guide · Sources checked November 3, 2026

Boundary and elevation information differ

A boundary survey addresses property boundaries and recorded features within its scope. Topographic or spot-elevation information addresses ground levels. A tree inventory identifies trees within its stated scope. Ask your surveyor and reviewing office what the project requires; do not assume a boundary-only drawing includes usable elevation or tree information.

A site plan proposes the work

The site plan coordinates the proposed home, setbacks, access, utilities and other site features with the underlying property information. Depending on the project, reviewers may also need grading, drainage, finished-floor elevation, septic or well locations and protected areas. Use the current local submission checklist.

A slope is a question, not a foundation verdict

A lot that falls away from the road needs coordinated elevation and drainage review. A photograph or survey upload alone should not produce a definitive slab-versus-stem-wall recommendation. Ask the responsible professionals how soils, grade, flood criteria and the proposed structure affect foundation design, and whether geotechnical investigation is appropriate.

Official sources and further reading

Use this guide to prepare questions. The permitting office and responsible professionals determine the requirements for your parcel and proposed work.

Keep planning

Find your county or city office →

Before buying a Florida homesite →

Wind criteria and Florida house plans →

Flood zones, base flood elevation and fill →

Wetlands and protected species before clearing →

Tree surveys, DBH and protected trees →

Clearing or demolishing before a new home →

Have a lot or a house idea?

Tell PlanSet what you want to build and where. We can help scope house plans, site coordination and the supporting services your project may need. You approve the scope and price before paid work begins.

Helpful details: city or county, whether you already own the lot, your survey status and a plan or inspiration link. It’s okay if you don’t know yet.