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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
13 July 2020 25 June 2020

All layers are available to order on DVD, via FTP or through the download centre.

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

Publication date Extraction date
24 August 2020 5 August 2020
5 October 2020 11 September 2020
16 November 2020 29 October 2020

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.

Past publication dates

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

Publication date Extraction date
13 July 2020 25 June 2020
1 June 2020 14 May 2020
21 April 2020 02 April 2020
2 March 2020 13 February 2020
27 January 2020 9 January 2020
16 December 2019 2 December 2019
4 November 2019 17 October 2019
23 September 2019 5 September 2019
19 August 2019 2 August 2019
30 July 2019 12 July 2019
18 June 2019 31 May 2019
8 May 2019 19 April 2019
26 March 2019 8 March 2019
25 February 2019 6 February 2019
21 January 2019 3 January 2019

OS MasterMap Sites layer updates

OS MasterMap Sites Layer is updated every six months. The latest update is from April 2020.

Building Height Attribute updates

Building Height Attribute is updated every six months. The latest update is from April 2020.

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