Anyone who takes part in a transaction involving real estate will need to sign required real estate documentation. Accordingly, landlords, tenants, lessors, lessees, sub-lessors, sub-lessees, purchasers, and sellers need appropriate real estate documents. These serve as evidence of the real estate transaction and also help to identify individual rights and responsibilities in the real estate agreement. Because so many people use these documents, many real estate document templates are available online for anyone to download. Always keep your copies of these documents in a safe place.