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OS MasterMap Topography Layer support

Individual real-world topographic features represented by points, lines, and polygons, each with their own unique reference.

Getting started

OS MasterMap Topography Layer allows you to reference your data to any real-world feature, helping you to manage your organisation's assets. This page contains support documents, technical information and FAQs including documentation for Building Height Attribute and Sites Layer.

Topography layer product guide (PDF)

Discover the range of features available with OS MasterMap Topography Layer.

Building Height Attribute overview (PDF)

The Overview introduces the product and gives context for all users. It highlights key features, provides examples of potential uses for the product and lists details like file sizes, supply formats, etc.

Building Height Attribute getting started guide (PDF)

The Getting Started Guide provides instructions for using the product in different software applications. Users with limited technical knowledge will be able to follow this guide.

Sites Layer user guide (PDF)

OS MasterMap Sites Layer provides a nationally maintained view of the detailed extents of important locations such as airports, schools, hospitals, utility and infrastructure sites and more.

Technical information

All the technical specifications and user guides for OS MasterMap Topography Layer, Building Height Attribute and Sites Layer.

Topography Layer technical specification (PDF)

OS MasterMap Topography Layer provides the most detailed and accurate large scale representation of Great Britain available from Ordnance Survey.

Building Height Attribute technical specification (PDF)

The Technical Specification provides detailed technical information about the product. It is targeted at technical users and software developers.

Sites Layer technical specification (PDF)

Sites Layer is intended to enhance analytical use of the information contained in OS MasterMap Topography Layer.


OS MasterMap Topography Layer

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