General Sales Contract: This is a lighter, usually much shorter, version of the sales contract between the state and the association. This real estate contract is a good option if you work directly with sellers and do not buy real estate through a real estate agent. If you prefer to use a general sales contract with a lawyer or real estate agent, you should indicate why you want to use the contract and highlight how it can save time for all parties. Hospitalized or suffering from an illness that prevents them from being present to sign the real estate contract Even if you have never bought property before, it is possible that you are familiar with the leases or that you have signed one in the past. As one might assume, these real estate contracts describe an agreement between the owner (owner or lessor) and a tenant (the tenant).