A method of managing a real estate property on which the lease parameters of the property are established in a computer database and a computer data file of the database contains at least one user profile related to management of the property. An assignment is made in the data file of the attributes of the authority of the user relative to the management of the property. The database contains data as to each of an owner entity of the property, a property manager entity of the property, if applicable, at least one tenant entity that occupies space in the property, and one or more vendor entities that are to provide services to the property. A user profile is set for at least one user of at each of the owner entity, property manager entity, if applicable, tenant entity, and vendor entity, and at least one attribute of authority is assigned to each said user. Communication capability is provided, preferably over the Internet, between the users of the owner entity, property manager entity, if applicable, tenant entity and vendor entity to manage an provide services for the property. Each property is assigned a domain name and a property owner can manage and obtain information for one or more properties that it owns.