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 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.
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.
Topography Layer Styling Guide (PDF)
A guide to applying cartographic styles for OS MasterMap Topography Layer.
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)
The Technical Specification provides detailed technical information about the product. It is targeted at technical users and software developers.
Key Features | What this product offers |
---|---|
Themes | - OS MasterMap Topography Layer – administrative boundaries, buildings, antiquities, land, rail, roads/tracks/paths, structures, height, and water. - Building Height Attribute - buildings and structures. - OS MasterMap Sites Layer – education, medical care, rail transport, road transport, water transport, utility, and industrial. |
Update frequency | - OS MasterMap Topography Layer – six weekly (view release schedule). - Building Height Attribute – six monthly (April and October). - OS MasterMap Sites Layer – six monthly (April and October). |
Coverage | - OS MasterMap Topography Layer – Great Britain - Building Height Attribute – Great Britain - OS MasterMap Sites Layer – Great Britain |
Format | - OS MasterMap Topography Layer – GML 2.1.2 - Building Height Attribute – CSV - OS MasterMap Sites Layer – GML 3.2.1 |
Supply | Full GB and AOI Supply available for OS MasterMap Topography Layer, Building Height Attribute and OS MasterMap Sites Layer from the OS Data Hub. |
Scale | 1:1,250 (urban geographies), 1:2,500 (rural geographies) and 1:10,000 (mountain & moorland geographies). |
Links and downloads
All the information you need to start using OS MasterMap Topography Layer, Building Height Attribute and Sites Layer.