A For Sale By Owner contract Arizona must include: 1. The Purchase Price, 2.Arizona requires those selling FSBO to fill out and file many documents and forms. Several of these documents are legally binding agreements. Flat Fee MLS Listing Arizona. Numerous real estate forms can be found on the Arizona Realtors website or through online platforms like LawDepot, eForms, or US Legal. Find the required and recommended documents for selling your home without a realtor in Arizona, plus where to get paperwork help. Step 2: Fill out your disclosure form(s). To list your home FSBO in Arizona, opt for a Flat Fee MLS company.