Home > Public Domain Data > Ordnance Survey GB to provide OS MasterMap data for free.

Ordnance Survey GB to provide OS MasterMap data for free.

The UK government announced last week that key parts of the OS MasterMap dataset (OSMM) are to be made available free of charge (see full announcement from OS). The following two datasets are due to be released under the Open Government licence (OGL) agreement:

  • OS MasterMap Topography Layer property extents
  • OSMM Topography Layer TOIDs (TOpographic IDentifiers), built into the features in the OS OpenMap-Local dataset.

In addition, a number of datasets will be made available (through an API) for free, up to a threshold, including:

  • OS MasterMap Topography Layer, including building heights and functional sites
  • OS MasterMap Greenspace Layer
  • OS MasterMap Highways Network
  • OS MasterMap Water Network Layer
  • OS Detailed Path Network

The announcement didn’t included any information on what the threshold for free access was, but no doubt details will start to filter out shortly as organisations start making use of these new data assets.

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