1) What Is a Soil Survey Report?

Geotechnical report from boreholes and lab tests; soil class Z1–Z4, bearing capacity, recommended foundation.

2) When Is It Required?

Mandatory for new permits, extensions, strengthening, and major restoration projects.

3) How to Obtain

Select geotechnical firm → site boring → lab analysis → report to structural engineer. Typically 2–4 weeks.

4) Report Contents

Borehole logs, soil profile, SPT values, lab results, soil class, foundation depth, liquefaction assessment.

5) Link to Structural Design

Structural engineer designs foundation from survey data. No permit without survey.

6) Historic Buildings

Recommended before foundation intervention or strengthening on listed buildings.

7) Cost and Validity

Cost depends on borehole count and depth; typically valid 2–5 years.

8) Conclusion

Correct soil survey is prerequisite for safe foundations. Contact us.