Recommended Valuation Process for Buy-Sell Agreements: Single Appraiser Chris Mercer tells how to set up a Buy-Sell Agreement for closely held and family businesses. He identifies three key procedures: Owners should select an appraiser for their business when they create the Buy-Sell, that appraiser should offer an initial baseline valuation for the Buy-Sell, and the named appraiser should continue to value the practice each year or two thereafter. Here’s why.