This is a legally binding Real Estate Purchase Contract ("REPC"). Utah law requires real estate licensees to use this form.Flat Fee MLS Listing Salt Lake City Utah. Utah requires those selling FSBO to fill out and file many documents and forms. Several of these documents are legally binding agreements. To help you prepare the paperwork for selling a house without a realtor, here is a list of 12 musthave documents. KSL Homes looks at the pros and cons of selling on your own instead of relying on a real estate agent.