🏗️ What Is a Foundation Survey in Real Estate?

A foundation survey verifies the exact location and elevation of a newly poured foundation. Surveyors confirm that the structure is built in the correct position and complies with approved plans, setbacks, zoning requirements, and permitting conditions before construction continues.

How a Foundation Survey Works

After the foundation is poured—but before framing begins—a licensed surveyor measures the exact placement and elevation of the foundation. The survey compares the as-built foundation to the approved site plan, construction drawings, and setback requirements.

A foundation survey typically includes:

  • Foundation footprint and shape
  • Exact location relative to property boundaries
  • Setback compliance
  • Elevation benchmarks for drainage and grading
  • Verification of structural alignment
  • Identification of encroachments or placement errors

The survey results are submitted to the builder or building department to confirm compliance before further construction proceeds.

Why Foundation Surveys Matter

For Builders & Contractors:

  • Confirms the foundation was poured in the correct location
  • Prevents costly structural corrections and delays
  • Ensures compliance with engineered plans and zoning rules
  • Provides a required verification step for many building departments

For Homeowners & Developers:

  • Protects against foundation placement errors
  • Ensures future additions or structures will align properly
  • Verifies setbacks to avoid encroachment disputes
  • Helps secure financing or meet lender requirements

Example of a Foundation Survey in Action

A builder pours the foundation for a new home. During inspection, the building department requires verification that the foundation:

  • Meets the required 10-foot side setback
  • Matches the house footprint shown on the approved site plan
  • Sits at the correct elevation for proper drainage
  • Does not encroach on an easement

The surveyor confirms the placement is accurate. Construction proceeds. If errors were found, the builder would be required to halt construction and correct the foundation.

Why Foundation Surveys Matter for FSBO Sellers

Homes with additions, garages, or new construction often require documentation proving the improvement was built correctly. A foundation survey helps sellers:

  • Provide proof that new construction met setback and location rules
  • Avoid buyer concerns about unpermitted or incorrect construction
  • Increase confidence in structural accuracy and legality
  • Prevent disputes over boundary or easement encroachments

Buyers feel more secure when improvements have verified placement and documentation.

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