Final Surveys are required for New Buildings and for vertical or horizontal building additions. The Final Survey must be prepared, signed & sealed by a Licensed Land Surveyor. It must be reviewed and certified by the New Building Architect or Engineer of Record.
The purpose of the Final Survey is to ensure that the building complies with bulk regulations (since this cannot be done by the DOB Inspector at the site), does not encroach onto adjacent property lines, has proper grading at the sidewalk, has proper storm drainage, has the required amount of street trees, etc.