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OS MasterMap refresh dates

Find out when OS MasterMap data is refreshed.

Get the latest dates when OS MasterMap data is refreshed. Plus you can find future refresh dates.

OS MasterMap Topography Layer

The latest OS MasterMap Topography data release is:

Publication date Extraction date
19 April 2022 31 March 2022

To order data on physical media or secure file transfer protocol (SFTP), go to OS Orders. To request data via download, go to OS Data Hub.

Publication notes
As part of our commitment to improving our processes we have updated how we supply release notes to include more information. This will include all refresh data for the OSMM Topography layer including the tidal update program.

Download our OS MasterMap Topography release notes (PDF).

Future refresh dates

Below is our future schedule of extraction and publication dates for OS MasterMap Topography Layer. We aim to keep this schedule up to date, but you should treat these dates as a guide only as they are subject to change. The extraction date will be confirmed on the publication date.

Please note these dates only apply to bespoke polygons, 'area of interest' orders and national sets.

Publication date  Extraction date
30 May 2022 12 May 2022
11 July 2022 23 June 2022
22 August 2022 04 August 2022
03 October 2022 15 September 2022

Past publication dates

Here are the dates when OS MasterMap Topography Layer was previously refreshed:

Publication date Extraction date
28 February 2022 10 February 2022
24 January 2022 06 January 2022
06 December 2021 18 November 2021
25 October 2021 07 October 2021

OS MasterMap Sites layer updates

OS MasterMap Sites Layer is updated every six months. The latest update is from April 2022.

Download our OS MasterMap Sites Layer release note (PDF).

Building Height Attribute updates

Building Height Attribute is updated every six months. The latest update is from April 2022.

Download our Building Height Attribute release note (PDF) and Coverage Map (PDF).