Providing temporary use of non-downloadable computer software to provide access to residential real estate available for sale in the market; design of custom homes, namely, custom home building design services for real estate purposes; hosting an interactive web site that allows users to create, edit and share information on real estate, office space, workspace and meeting rooms; hosting of websites to allow users to obtain an offer to purchase residential real estate using interactive technology; providing temporary use of non-downloadable computer software for accessing an online marketplace for sellers and buyers in the field of residential real estate; providing temporary use of non-downloadable computer software for viewing real estate images and comparable properties.