Using the text box below, enter at least 2 number or letters and select the property off the list,. do not press Enter. It may take a moment for results to load. Our online GIS Data Browser lets you search our data with no special software to the Tax Assessor page and open the Property Information & Map Search link. Mass Property Map popup with parcel Information Many municipal web sites have an online property lookup feature, usually on the assessor's page. Click on the links above to choose which type of Property Tax search you would like. Once finished please take a moment to fill out our short online survey. ×. Property Data Online provides access to a rich set of information about real You are here: Departments > Information Technology > Property Data Online. Contact the Department of Information Technology's Service Desk: records from SDAT and MDP except for property owner names.