What is a MasterMap®?
OS MasterMap
® is the most detailed and accurate digital map of Great Britain, surveyed by the Ordnance Survey. It features every fixed feature of the land, manmade or physical, that is larger than a few metres.
Can I preview MasterMap® before ordering?
Yes, we offer a free full screen preview before ordering. Other suppliers may charge for this.
How much does MasterMap® cost?
We offer substantially discounted pricing and you can find
OS MasterMap®’s price list here.
How often is MasterMap® updated?
It is updated on our site once every 6 weeks.
What formats do you offer MasterMap® in?
CAD formats like DWG and DXF, GML and image formats like PDF and PNG.
What do the colours represent?
Here is a comprehensive
key for MasterMap®.
How accurate is MasterMap®?
Here you can find
OS MasterMap® accuracy information.
What software do I need to view MasterMap®?
DWG and DXF formats require CAD software (such as
Autodesk Viewer or AutoCAD). PDF requires Adobe Acrobat Reader, PNG format uses your computer’s built-in image viewer and GML files require GIS software or similar.
What optional extra layers are there with MasterMap®?
The optional extra layers we offer are
1m contours,
building heights,
freehold boundaries, the
National Tree Map™ and UPRNs. These are only available in CAD format.
Is OS MasterMap® free?
OS MasterMap
® is not free as it is a premium and highly detailed mapping product provided by Ordnance Survey. Access to OS MasterMap
® often involves licensing and associated costs, as it offers extensive and accurate geographic information used in various professional applications, such as urban planning and architecture.
What is OS MasterMap® topography layer?
It is the most realistic and accurate representation of Britain's landscape, comprising aspects that represent both the manmade and natural environments, such as roads, tracks, and walkways, buildings, water, heritage, structures, administrative boundaries and much more.
What are the themes of OS MasterMap®?
Ordnance Survey MasterMap
® encompasses themes such as topography, roads, buildings, land use, water features, greenspaces, administrative boundaries, geographic coordinates, utilities, and elevation data. You can find all
OS MasterMap® themes here.
What is OS MasterMap® topography layer with building height attribute?
It is an extension of the OS MasterMap
® Topography Layer product. It includes a collection of height attributes for Topographic Area elements with a building theme within the OS MasterMap
® Topography Layer.
Read all FAQs here.