The Los Angeles County Parcel Map Search Tool provided by the Department of Public Works is an essential resource for anyone involved in real estate, land development, or property research. It allows users to search and view parcel maps, tract maps, and other land records by assessor identification number (AIN), address, or tract number. This tool provides access to historical and current parcel boundaries, legal lot lines, and subdivision information—critical details for understanding property dimensions, development potential, and legal ownership boundaries.

Understanding parcel maps is important when evaluating zoning, easements, access rights, and lot splits, especially in areas with older or irregular subdivisions. Real estate agents, developers, surveyors, and even homeowners can use this tool to verify legal descriptions and prepare for transactions, remodeling, or development. Having this free and publicly accessible tool helps ensure accuracy and transparency in real estate dealings.