Deedlines is an online property research resource that helps people explore parcel boundaries and lot lines using a free map. Its property line information is drawn from county assessor public records, giving visitors a way to view mapped properties and acreage across participating counties in the United States. Users can browse coverage by state and county or search for a location to find property boundaries.

The site lists coverage across states and Washington, D. C., with county and parcel counts to help visitors understand the available data. Beyond its map, Deedlines offers tools and information for common property questions.

Visitors can look up a property owner by address, use an acreage calculator to convert feet to acres or estimate the area of a lot by address, and consult guidance on how to find property lines. These features make Deedlines a practical starting point for homeowners, prospective buyers, and others seeking accessible parcel information. The site presents county-record-based mapping and lookup resources in one place