This document provides support to grantees when real estate programs require the acquisition of real property interest owned by a railroad. It explains and outlines the necessity of developing a clear and understandable appraisal scope of work and describes the methodologies that may be most appropriate in arriving at a supportable market value. Experience has shown these types of valuation issues can be quite complex and a clear and understandable up-front agreement regarding the various valuation concerns can prevent later project delays.