A mortgage survey in the Midwest is typically used when purchasing a new residential property or commercial property, but can be used with any property purchase that requires a mortgage. It will include a physical inspection of the home, building, or structures located on a specific property. As your Midwest mortgage surveyor specialist, Janes Survey, Inc. will review the entire property when hired as your mortgage surveyor in the Midwest. Why do you need a Mortgage Survey in the Midwest? The mortgage survey is used to determine that land boundaries and building locations are correctly identified, marked, and documented at.