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OS MasterMap refresh dates

Find out when OS MasterMap Topography Layer data is refreshed.

Get the latest dates when OS MasterMap Topography Layer data is refreshed. Plus you can find past publication dates with their accompanying release note.

OS MasterMap Topography Layer

The latest OS MasterMap Topography data release is:

Publication date Extraction date Release Note
12 June 2023 24 May 2023 June 2023

To download the latest release, visit the OS Data Hub.

Release note

As part of our commitment to improving our processes we have updated how we supply release notes to include more information. These include all product feature counts and any pertinent product updates to OS MasterMap Topography Layer.

Download the current OS MasterMap Topography release note (PDF).

Future publication 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
24 July 2023 05 July 2023
29 August 2023 09 August 2023
09 October 2023 20 September 2023
20 November 2023  01 November 2023

Past publication dates

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

Publication date Extraction date Release Note
09 May 2023 19 April 2023 May 2023
27 March 2023 08 March 2023 March 2023
13 February 2023 25 January 2023 February 2023
03 January 2023 08 December 2022 January 2023
14 November 2022 27 October 2022 November 2022

OS MasterMap Sites layer updates

OS MasterMap Sites Layer is updated every six months. The latest update is from April 2023.

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 2023.

Download our Building Height Attribute release note (PDF).