Can I choose which layers are included in OS CAD maps?

Yes. Our OS CAD maps provide selectable features including structures, administrative boundaries, roads, water features, access points, and optional contour lines. Each feature is supplied as a separate vector layer, offering full control within your CAD software.

What is the difference between DXF and DWG formats?

DWG is Autodesk’s proprietary binary format, optimized for AutoCAD and Revit, providing maximum compatibility within Autodesk environments. DXF is a universal, text-based CAD format widely compatible with most CAD and GIS software, including AutoCAD, Revit, QGIS, ArcGIS, and Civil 3D.

Can I reuse the same CAD map for multiple planning applications?

Yes. Our extended licence allows you to produce unlimited outputs from the same CAD map during your licence period. This flexibility makes our maps ideal for ongoing development projects, site revisions, and submitting updated architectural plans to local authorities.

How do OS MasterMap DXF/DWG formats differ from GIS formats?

The DXF and DWG formats provided are simplified versions of OS MasterMap, specifically designed for direct, straightforward use in CAD software. Unlike GIS formats (such as GeoPackage, GML, or Shapefile), DXF/DWG files generally exclude complex GIS attributes, detailed metadata, and advanced styling options. This makes them ideal for clear CAD visualisation, basic mapping tasks, and site planning, while GIS formats support detailed spatial analysis and advanced GIS workflows.

Ordnance Survey MasterMap Topography Layer® - DXF | DWG - Email delivery in 20 minutes

Available in Vector Format in DWG | DXF | SHP | GML | GPKG | GeoTIFF | PDF for CAD and GIS

OS Premium Licenced Partner • Local Authority Compliant • Scalable and Layered OS Vector Data • No sign-up needed – checkout instantly

Address

Placename

Grid

W3Words

Jump below map to Select Size

OS MasterMap Topography Layer - Colour and Black and White for CAD

DXF or DWG Lines Only - clean line work for survey overlay

DWG Colour - 50 plus labelled CAD layers with solid fills

DWG Lines Basic - simplified layer structure

OS Terrain 5 DTM and contour overlay on MasterMap

Building Height Attributes - BHA 3D building geometry

GIS data cut - GeoPackage, Shapefile and GML formats

GeoTIFF georeferenced raster output with rotation

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OS Mastermap for CAD and GIS Users DWG or DXF Lines Only - clean line work ready for survey overlay DWG Colour - full OS specification with solid fills across 50+ named layers - Building Heights included DWG Lines Basic - simplified layers for a lighter, faster base map Optional OS Terrain 5 contours and DTM height points on dedicated layers 3D building geometry from OS Building Height Attributes included with Colour format GIS data cuts in GeoPackage, Shapefile and GML with full OS attributes Define your site area at any angle - rotate the map extent to follow a road, river, boundary or building line

Download Samples

DWG - Lines ↓

Multi-layer with colour fills & BHA

DWG - Colour ↓

Multi-layer line work

DWG - Lines Multi Layer ↓

DTM & Contours

DWG Colour + DTM ↓ DWG Lines + DTM ↓

GIS

GIS Formats ↓ More samples ↓

OS MasterMap for CAD and GIS Users

Order OS MasterMap topographic data as a layered DWG or DXF file, delivered by email within minutes. Choose from a clean lines-only drawing for survey overlay, a full-colour rendering to OS specification with 3D building heights, or a GIS data cut in GeoPackage, Shapefile, GML or GeoTIFF. Every format is clipped to your exact site boundary and delivered in British National Grid (EPSG:27700).

What You Get

DWG & DXF Lines

Clean OS line work on a single layer - the most popular choice for overlaying onto your own survey or site plan. Lightweight and fast to work with in any CAD package.

DWG & DXF Colour

The complete OS MasterMap Topography Layer rendered to full Ordnance Survey colour specification across 50+ named layers, with solid fills, hatches, symbols and 3D building heights included.

Lines Multi Layer

All the line work and text spread across 50+ named layers - without the solid colour fills. Freeze, isolate or restyle any feature group. Ideal for engineers and surveyors.

3D Building Heights

OS Building Height Attribute data gives you extruded 3D building geometry - walls, roofs and ground footprints at real OS heights. Included automatically with the Colour format.

Terrain & Contours - Optional

Add OS Terrain 5 DTM points, contour lines at 0.5m, 1m, 2m or 5m intervals, and OS Terrain 5 ASCII grid data to any DWG or DXF output. Contours are true 3D polylines with Z values in every vertex.

GIS Data Cuts

Full vector data in GeoPackage, Shapefile or GML - plus georeferenced GeoTIFF rasters at 400 DPI. Up to seven layers with complete OS feature attributes.

How It Works

Select your site area on the map, choose your format and style, and we deliver the data to your inbox. The entire process is automated - most orders arrive within minutes. You can define a rectangular extent at any rotation angle, or supply a custom site boundary by email for a bespoke quote. Flexible 1, 2 or 3-year licence terms with unlimited internal outputs at any scale.

OS Premium Licensed Partner

UKMapCentre.com is a licensed Ordnance Survey partner. All data is supplied under OS terms, fully compliant for planning applications, local authority submissions and commercial use.

More Sample Downloads

CAD Users

DXF Lines Basic ↓ DXF Colour with BHA ↓ DXF Lines Mulit-Layer ↓ DWG Colour | DTM | Contours ↓ DWG Lines + DTM ↓ DWG DTM Only ↓ DWG DTM & 2M Contours 3D ↓ OS Terrain 5 ASCII ↓

GIS Formats

Visit Our Blog Pages for More Support

Guides, tutorials and tips to help you get the most from your OS MasterMap data:

About UK Map Centre LLP

UKMapCentre.com is a sustaining member of QGIS — QGIS Supporter

UKMapCentre.com is a member of The Association for Geographic Information — AGI Member

Ordnance Survey Licensed Partner — OS Licensed Partner

Alternative Products

Extracts: PDF | JPG | TIFF - 1:1250 Extracts: PDF | JPG | TIFF - 1:2500 3D OS MasterMap® Topography Layer

PRODUCT SPECIFICATION

Product:	Ordnance Survey Large Scale for GIS - OS MASTERMAP® Topography Layer with optional DTM & contours available
Base Mapping	OS MasterMap Topography Layer®
Scale	Any within CAD
Coverage	Full Great Britain coverage, located by postcode or selected area (excludes Northern Ireland - see OSNI)
Format	CAD: DXF or DWG or GIS: GeoPackage \| GML \| GeoTiff
Software Required	CAD Autocad (or equivalent) or GIS
Product Price	From: £22.37 + VAT
Delivery Method	Digitally via email
Turnaround Time	Delivery within 30 minutes (7 days a week, 7 am to 11 pm). Larger files may take longer to generate.
Currency	Current - Latest available direct from Ordnance Survey
Samples for CAD and GIS users	Sample \| DWG Lines Basic Sample \| DXF Lines Basic Sample \| DWG Colour with BHA Sample \| DXF Colour with BHA Sample \| DWG Lines Mulit-Layer Sample \| DXF Lines Mulit-Layer Sample \| Contours - DTM - DWG-Colour Sample \| Contours - DTM - DWG-Lines Sample \| GeoPackage with BHA and Contours Sample \| GML with BHA and Contours Sample \| SHP with BHA and Contours Sample \| GeoTiff BW Sample \| GeoTiff Colour
Key Features	DXF \| DWG: North arrow, Scale bar, Licence number, National grid coordinates
Uses	Designed for planning applications, architectural drawings and site analysis. The OS MasterMap® Topography Layer is supplied in DXF or DWG for use in CAD. Includes optional contour lines and digital terrain (OS Terrain™ 5). Ideal for various professionals in construction, including architects, planners and developers. Extended licence terms are now available.
Number of Printouts	Unlimited outputs from CAD during your licence term (1, 2 or 3 years)
Options Info	Contours are generated from OS Terrain® 5 using a third-party application. These are intended as 2D visual guidelines and are not subject to OS accuracy standards. For 3D modelling, DTM data with Z-values should be used.
Licence Term	Please see the Licence tab below for full terms.
OS Terrain (Height)Accuracy	OS Statement: OS Terrain 5 has been measured against GPS data across sample areas to determine the root mean square error (RMSE) of height points in different zones: urban areas, major communication routes, rural locations and mountain or moorland. Urban and major communication routes = 1.5 metres RMSE* Rural = 2.5 metres RMSE Mountain and moorland = 2.5 metres RMSE * Root mean square error. This is the average of the mean heights collected in a sample area. The contours are generated from the OS Terrain® 5 using a third party application. They are not subject to Ordnance Surveys accuracy / specifications and are designed to provide a 2 dimensional guideline only.
OS Terrain (Height Option): Further Reading	OS Terrain 5 User Guide \| OS Doc

Item	Permitted	Alternative Product / Notes
Digital submission to any online planning portal		Create as many outputs/scales as required - e.g. 1:500, 1:1250, 1:200 from the one purchased file
Add basic content to this Product -i.e. outline a property in red for purposes of planning permission.		Within a GIS setup or CAD package
GIS Use		Data already Georeferenced
Ready for CAD		Data already Georeferenced
Printing Extra Copies		Unlimited outputs/scales from your software within the licence term
Permit your Contractors to use the purchased Licensed Data		Contractor Form Below - Best Practice: Make sure you select the relevant number of users/terminals if using a contractor before purchase