Common Ownership Lots

Published by Department of Buildings | District of Columbia | Metadata Last Checked: January 07, 2026 | Last Modified: 2026-01-06T10:04:07.000Z

The common ownership lots is a single polygon layer that is built from various polygon feature classes of the District's Vector Property Mapping database including the below. It represents all lands that are outside right-of-way.Record LotsTax LotsParcel LotsReservation LotsAir Rights LotsAll of which are found separately on https://opendata.dc.gov. The Office of Tax and Revenue maintains a database known as Information Tax System (ITS) that contains the accounts for the real property taxes. ITS records reference record lots, tax lots, parcels, condominiums and federally owned lands such as reservations. Information from ITS is conflated to Common Ownership Lot features by SSL (Square, Suffix and Lot). This layer does not include condo records. This layer is regenerated WEEKLY with an automated algorithm using the latest Pubic Extract information for attribution.

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DC DOB District of Columbia Land Lot Property Square Washington DC air right parcel planning cadastre record reservations tax vpmdata

Complete Metadata

identifier	https://www.arcgis.com/home/item.html?id=1f6708b1f3774306bef2fa81e612a725&sublayer=40
issued	2015-02-27T21:10:07.000Z
landingPage	https://opendata.dc.gov/datasets/DCGIS::common-ownership-lots
spatial	-77.1194,38.8016,-76.9090,38.9960
theme	[ "geospatial" ]

Location