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OS MasterMap refresh dates

Find out when OS MasterMap data is refreshed.

All products

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
16 December 2019 28 November 2019

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

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.

Publication date Extraction date
27 January 2020 9 January 2020
2 March 2020 13 February 2020
21 April 2020 2 April 2020

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
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
3 December 2018 14 November 2018
22 October 2018 3 October 2018
3 September 2018 12 August 2018
30 July 2018 11 July 2018
18 June 2018 30 May 2018
8 May 2018 19 April 2018
26 March 2018 7 March 2018
19 February 2018 2 February 2018

OS MasterMap Sites layer updates

OS MasterMap Sites Layer is updated every six months. The latest update is from October 2018.

Building Height Attribute updates

Building Height Attribute is updated every six months. The latest update is from October 2019.

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