Authoritative basemap
Underlay for every internal GIS app, planning portal, asset map and field tool.
// 01 - mastermap-ngd
OS MasterMap Topography Layer
Britain's most detailed large-scale topographic map - 470M+ features, every building, road, fence and field.
// WHAT'S IN IT
Inside the dataset
OS MasterMap Topography Layer is the definitive large-scale vector map of Great Britain. Every real-world feature - buildings, roads, paths, water, vegetation, structures and land parcels - is captured as a polygon, line or point with a persistent TOID identifier. It is the foundation layer underneath most professional GIS workflows in the UK.
We license MasterMap Topography for organisations that need authoritative basemap geometry: planning, asset management, surveying, infrastructure, insurance underwriting and prop-tech. Take the full national dataset, a tile-based regional cut, or a bespoke clip to your area of operations.
Key features
- 470M+ topographic features across England, Scotland and Wales
- Persistent TOID identifiers - feature stability across releases
- Building polygons with classification and height context
- Road, path, rail, water, foreshore, structures and landform
- Cartographic theme attribution for styling
- Daily change-only updates available on subscription tiers
// SAMPLE
What it looks like
A representative render of MasterMap Topography - production deliveries are tailored to your styling and area of interest.
// WHO LICENSES THIS
Most often licensed by
- Local Authorities
- Utilities
- Property & Prop-tech
- Construction & Development
- Surveying & Engineering
- Insurance & Risk
- Emergency Services
// COMMON USE CASES
What teams build with this
Asset management
Join your asset records to TOIDs for stable, change-aware referencing across releases.
Planning & development
Boundary derivation, site context, constraints overlays, application drawing.
Insurance underwriting
Per-property attribution at policy inception - proximity, structure, exposure.
// COVERAGE & LICENSING
Licensed to fit, not bloat.
Every licence is sized to your actual usage. We'll always recommend the smallest coverage tier that solves your problem - and scale up as you do.
Single site
A specific site or property - typical for small consultancies and one-off projects.
Regional
A council area, county, region or custom polygon - typical for LAs, utilities and dev firms.
National (GB)
Full GB coverage - for prop-tech, insurance, multi-region utilities and national operators.
Bespoke
Custom AOI, mixed cadence, multi-tenant or co-built licence. We scope under NDA.
// SPECS & TECHNICALS
Specs & technicals
Formats & delivery
- GeoPackage
- GML
- Shapefile
- WFS
- Vector Tiles
- JSON / API
- Update cadence
- Every 6 weeks (full) - daily change-only on subscription
- Projection
- EPSG:27700 (British National Grid)
- Scale
- 470M+ features
- Delivery modes
- API · Files · Custom
Coverage & tiers
We can scope licensing at any of the following tiers - speak to us about anything in between.
- Single site
- Regional
- National (GB)
- Bespoke / custom AOI
Standards & schema
All vector datasets ship with stable identifiers (TOID/OSID/UPRN) suitable for change-aware joining. Raster datasets ship with full georeferencing metadata. We can supply schema documentation, sample files and ETL guidance on request.
// FAQ
Common questions
How often is MasterMap updated?
A full national release is published every six weeks. Change-only updates (COU) are available daily on appropriate subscription tiers, so your downstream systems only ingest deltas rather than the full dataset.
What's a TOID and why does it matter?
A TOID is a persistent identifier assigned to every MasterMap feature. It survives across releases, so you can attach your own attributes (asset IDs, inspection records, photos) to a TOID and they remain valid as the geometry is refined.
Can we license just our region?
Yes - we offer single-site, regional, nation-wide and bespoke clips. Most enterprise customers start with a regional licence and scale up.
Which formats can you deliver?
GeoPackage, GML, Shapefile, vector tiles, hosted WFS, or JSON via our API. Tell us your downstream stack and we will recommend the cleanest path.
Do you support change-only updates?
Yes - change-only delivery is available as part of subscription tiers and dramatically reduces ingest cost for organisations with continuous data pipelines.
// REQUEST A QUOTE
License MasterMap Topography.
Tell us your scope and use case - we'll come back with delivery options, formats and indicative pricing for MasterMap Topography under NDA.
- Reply within one UK working day
- Senior partner team - no SDR gauntlet
- Indicative pricing under NDA
Prefer email? Write to data@planningmapsuk.co.uk.
// YOU MIGHT ALSO LICENSE
Pairs well with
MasterMap & NGD
OS NGD Buildings
Every building in Britain - geometry, height, age, use class and a stable OSID.
View datasetMasterMap & NGD
OS NGD Land Features
Land use, vegetation, greenspace, foreshore and natural features - the green and blue layer of GB.
View datasetMasterMap & NGD
OS MasterMap Highways Network
A connected, routable national road network - every street, junction, restriction and average-speed segment.
View datasetAddressing & POI
OS AddressBase Premium
Full address lifecycle - provisional, alternative, historic - for systems of record.
View dataset