BlockLot is compiled from 103 public sources (108 datasets). Each is listed below with its publisher, dataset, licence, the date we last retrieved it, what we changed, and where in BlockLot it is used.
Public data portals keep no numbered versions of a dataset, so the retrieved date is what identifies the version we hold. Dates are New York dates. A date marked * is the day our last complete read of that source finished.
Everything BlockLot shows is compiled from the public records listed on this page and is provided as is, without warranty of any kind.
Records may be outdated, incomplete, or matched to the wrong property. A record that names a business at an address is not a statement that the business currently occupies any premises.
Before relying on a record, verify it with the agency that issued it.
BlockLot is not affiliated with or endorsed by the City of New York, New York State, the United States government, any government agency, or any business listed.
To report an error or ask for a record to be removed, use Corrections.
NYC Administrative Code § 23-502(d): public data sets are made available “without any registration requirement, license requirement or restrictions on their use”. The City may ask a re-publisher to identify the source, version and any modifications, which this page does. § 23-504: the City gives no warranty of completeness, accuracy, content or fitness for any particular purpose.
A non-exclusive, revocable licence to use and redistribute data published on data.ny.gov, commercial use included, with no attribution required. The State may require a user to stop using or displaying its content, and we will.
17 U.S.C. § 105: copyright “is not available for any work of the United States Government”. No endorsement by the publishing agency is implied.
Published on nyc.gov as a reference page rather than as an Open Data set, and read under the NYC.gov Terms of Use. We identify ourselves when we read it.
Contact details from public DOB permit records, gathered by BlockLot's predecessor system from DOB's Building Information System. That collection cannot be repeated, so it is kept exactly as imported and never refreshed.
Used only to draw the property map's streets, parks and buildings. Nothing derived from OpenStreetMap is stored or shown as property data. The map software, style, icons and fonts carry their own licences, listed in the file below.
Read the terms · Map software, style, icons and fonts · Noto Sans font licence (SIL OFL 1.1)
Downloaded free from the Department of City Planning, with no registration, licence or click-through. DCP provides it “for informational purposes only” and gives no warranty of its completeness, accuracy, content or fitness for any particular purpose. The address data inside it (PAD) is an NYC Open Data set. Geosupport and PAD are the City's marks, named here only to identify the source.
Data may be used, modified and shared, commercially included, provided the text of the agreement is made available with shared Data; it places no obligation on Results. It carries no warranty. The full text is linked here.
Redistribution carries a copy of the licence, a notice of what was changed and when, and the attribution notices of the NOTICE file, reproduced in full below. The Foursquare name is used only to describe where the records come from.
Read the terms · Apache License 2.0 text · Foursquare OS Places NOTICE (verbatim)
Foursquare OS Places Notice © 2026 Foursquare Labs, Inc. All rights reserved. The Foursquare OS Places dataset (the “Data”) is licensed under the Apache License, Version 2.0 (the “License”). You may not use, modify, or distribute the Data except in compliance with the License. As set forth more fully in the License, if you use, modify, or distribute the Data, you must: – provide recipients with a copy of the License. – if applicable, include prominent notices to the extent you’ve changed the Data. – preserve attribution to Foursquare, including preserving the full content of this NOTICE.txt file. To ensure appropriate attribution to Foursquare, we recommend the following: – if using/distributing the Data in flat file form as-is or after making changes/modifications: include this NOTICE.txt file, which may be modified to include an additional notice of your changes/modifications, if any. – if using/distributing the Data in API form as-is or after making changes/modifications: include a copy of the content from this NOTICE.txt file prominently in your developer documentation for such API, which may be modified to include an additional notice of your changes/modifications, if any. You may obtain a copy of the License at: http://www.apache.org/licenses/LICENSE-2.0. Unless required by applicable law or agreed to in writing, the Data distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. We also encourage you to join our Placemaker community where you can contribute and provide suggestions to improve the accuracy of the Data for future releases for yourself and others.
Use and redistribution are permitted, commercially included, provided the copyright notice, the conditions and the disclaimer are reproduced (the full text is linked here) and the contributors' names are not used to endorse BlockLot. Provided as is, with no warranty.
Read the terms · name-suggestion-index licence (BSD 3-Clause)
Dedicated to the public domain: no conditions.