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Ordnance Survey releases new building height data

UK: Ordnance Survey has released a product enhancement to its MasterMap Topography Layer. Customers of OS MasterMap Topography Layer can now access information on the heights of almost 20 million buildings across Great Britain with the alpha release of its building height attributes. The enhancement was released on 17 March, and is available to licence holders at no additional cost.

The alpha release covers some 8,000 km2 of the major towns and cities across Great Britain, providing customers with additional generalised attributes on building heights. According to a blog post by Ordnance Survey, 19.625 million buildings in the towns and cities are covered in the alpha release. The heights are calculated by a fully automatic process that uses remotely sensed data, including aerial imagery and digital surface and terrain models.
Source: Ordnance Survey