Complete Part 2 of the form. The form 40 and 40a were created to be used in addition to the purchase and sale agreement.They are forms specific to Escrow. Learn about the new contract changes. Rachelle Willhite with Best Choice Realty goes over the new BCR 41C. A new law requires a signed buyer's agreement, but the changes make the buyer and Realtor relationship stronger and more transparent. The compensation will be detailed in the agreement. It's not in the boilerplate because it can't be, there is no standard compensation. A new rule in Washington state requires real estate agents and our buyer clients to sign a buyer representation agreement. Here's why and how it works.