noun
cadastral map; plat map; lot map
A map showing land parcels, boundaries, and lot numbers, used in real estate, surveying, and municipal records.
不動産登記には区画図が必要です。
A cadastral map is required for real estate registration.
市役所で区画図を閲覧できる。
You can view the plat map at the city hall.
公図 is an official cadastral map kept by the Legal Affairs Bureau, often used interchangeably with 区画図 in legal contexts.
Compound of 区画 (くかく, 'division, section') and 図 (ず, 'map, drawing').