MapTucson is an online resource that allows users to click on a map index to find and filter neighborhoods, liquor licenses, code violations, historic preservation, voting precincts, and much more.
Any item in the layer list that has a plus sign (+) next to it can be clicked to expand and reveal related sub-layers. Users can search using an address, parcel, neighborhood, school, subdivision, street intersections, and last name. Parcel information is linked to Property Research Online (PRO), allowing users to find information about permit activities (permit history, active permits, or violations), zoning and parcel data, property jurisdiction (City or County limits), and more.
Original source can be found here.