Why is an on-site field inspection required for building a deck?

An on-site field inspection is required when the inspector has to go out in the field to verify where the septic system is located. This may be required depending upon what information is contained in the file. There are instances where the file is incomplete or incorrect. The inspection is conducted to ensure that the proposed project will not damage the existing septic system or replacement area. No on-site field inspection is required when there is adequate information in the file.