# Summary ## Basement Presence data


Theme	OS NGD Buildings
Collection	OS NGD Building Features
Feature Type	Building
Version	2.0 onward
Coverage	Great Britain All Buildings in scope
Geometry	Not applicable (Building attribution)
Attribution	Basement presence Presence of self-contained basement flat Third party provenance
Data Sources	Verisk and Ordnance Survey
Data Updates	Updates from Verisk are assessed within 10 days and, subject to validation, will be updated into the OS NGD within three months. Updates from OS are subject to the standard revision policy. When available, updates are processed up to daily.
Supply Type	Full supply and Change-Only Update (COU)
Supply Format	GeoPackage and CSV (OS Select+Build); GeoJSON (OS NGD API – Features)

## Building Access Location data


Theme	OS NGD Buildings
Collection	OS NGD Building Features
Feature Type	Building Access Location
Version	1.0 onward
Coverage	Key public buildings in Great Britain
Geometry	Point
Data Sources	Data captured by OS field surveyors.
Completeness	Access Locations will be collected for key public buildings within a subset of Land Use Sites: Hospitals Stadiums and Sports Arenas – Typically those with a capacity greater than 5 000 people Shopping Centres – Typically those with greater than 50 retail units Railway Stations Major Transport Interchanges – Typically airports, international ferry terminals, vehicular ferry terminals with a Land Use Site area greater than 1 000m² and bus / coach stations with a Land Use Site area greater than 5 000m² Conference Centres – Typically sites whose primary function is to host formal discussions/meetings and exhibitions and with a capacity greater than 500 people Concert Venues – Typically those with a capacity greater than 1 000 people
Thematic Accuracy	The classification of Access Locations is based upon ground survey collection of externally identifiable access locations.
Currency / Data Updates	Access Locations will be updated into the OS NGD where changes occur to topographic features following the standard revision policy for such features.
Supply Type	Full Supply and Change-Only Update (COU)
Supply Format	GeoPackage and CSV (OS Select+Build); GeoJSON (OS NGD API – Features)

## Building Age data


Theme	OS NGD Buildings
Collection	OS NGD Building Features
Feature Type	Building
Version	2.0 onward
Coverage	Great Britain Buildings with at least one address
Geometry	Not applicable (Building attribution)
Attribution	Period of construction Year of construction, where available Third party provenance
Data Sources	Verisk and Ordnance Survey
Data Updates	Updates from Verisk are assessed within 10 days and, subject to validation, will be updated into the OS NGD within three months. Updates from OS are subject to the standard revision policy. When available, updates are processed up to daily.
Supply Type	Full Supply and Change-Only Update (COU)
Supply Format	GeoPackage and CSV (OS Select+Build); GeoJSON (OS NGD API – Features)

## Construction Material data


Theme	OS NGD Buildings
Collection	OS NGD Building Features
Feature Type	Building
Version	2.0 onward
Coverage	Great Britain Buildings with at least one address
Geometry	Not applicable (Building attribution)
Attribution	Construction material Third party provenance
Data Sources	Verisk and Ordnance Survey
Data Updates	Updates from Verisk are assessed within 10 days and, subject to validation, will be updated into the OS NGD within three months. Updates from OS are subject to the standard revision policy. When available, updates are processed up to daily.
Supply Type	Full Supply and Change-Only Update (COU)
Supply Format	GeoPackage and CSV (OS Select+Build); GeoJSON (OS NGD API – Features)

## Description data


Theme	OS NGD Buildings
Collection	OS NGD Building Features
Feature Type	Building
Version	2.0 onward
Coverage	Great Britain Buildings with at least one address
Geometry	Not applicable (Building attribution)
Attribution	Building description
Data Sources	Ordnance Survey
Data Updates	Updates from OS are subject to the standard revision policy. When available, updates are processed up to daily.
Supply Type	Full Supply and Change-Only Update (COU)
Supply Format	GeoPackage and CSV (OS Select+Build); GeoJSON (OS NGD API – Features)

## Green Roof presence data


Theme	OS NGD Buildings
Collection	OS NGD Building Features
Feature Type	Building
Version	4.0 onward
Coverage	Great Britain
Geometry	Not applicable – attributed to Compound Building
Scope	All buildings >4m²
Data Sources	Data extraction by automated methods using OS topographic data, imagery and height data.
Completeness	All buildings in OS topographic data, subject to the availability of imagery and height models.
Thematic Accuracy	The source data is automatically processed. Low confidence outcomes and buildings not visible on imagery will be included.
Currency / Data Updates	Supplier’s three-yearly cyclic revision programme or where changes occur to topographic features following the standard revision policy for such features. These updates will be processed at least monthly.
Supply Type	Full Supply and Change-Only Update (COU)
Supply Format	GeoPackage and CSV (OS Select+Build); GeoJSON (OS NGD API – Features)

## Number of Floors data


Theme	OS NGD Buildings
Collection	OS NGD Building Features
Feature Type	Building
Version	3.0 onward
Coverage	Residential and office buildings in Great Britain. For residential buildings, they must contain one or more residential address and be the main building in an OS Land Use Site. For office buildings, they must contain 50% or more office addresses.
Geometry	Not applicable (Building attribution)
Data Sources	Ordnance Survey observed and modelled data. When modelled from the OS algorithm, updated on an annual basis.
Data Updates	When OS height and imagery data is available for a building. When a building is surveyed by OS field capture. When indicated by EPC records, updates will be fed into the OS NGD within one month of publication. When modelled from the OS algorithm, updated into the OS NGD on an annual basis.
Supply Type	Full Supply and Change-Only Update (COU)
Supply Format	GeoPackage and CSV (OS Select+Build); GeoJSON (OS NGD API – Features)

## Roof Aspect data


Theme	OS NGD Buildings
Collection	OS NGD Building Features
Feature Type	Building
Version	4.0 onward
Coverage	Great Britain
Geometry	Not applicable – attributed to Compound Building
Scope	All buildings >4m²
Data Sources	Data extraction by automated methods using OS topographic data, imagery and height data.
Completeness	All buildings in OS topographic data, subject to the availability of imagery and height models.
Thematic Accuracy	The source data is automatically processed. Low confidence outcomes and buildings not visible on imagery will be included.
Currency / Data Updates	Supplier’s three-yearly cyclic revision programme or where changes occur to topographic features following the standard revision policy for such features. These updates will be processed at least monthly.
Supply Type	Full Supply and Change-Only Update (COU)
Supply Format	GeoPackage and CSV (OS Select+Build); GeoJSON (OS NGD API – Features)

## Roof Materials data


Theme	OS NGD Buildings
Collection	OS NGD Building Features
Feature Type	Building
Version	4.0 onward
Coverage	Great Britain
Geometry	Not applicable – attributed to Compound Building
Scope	All buildings >4m²
Data Sources	Data extraction by automated methods using OS topographic data, imagery and height data.
Completeness	All buildings in OS topographic data, subject to the availability of imagery and height models.
Thematic Accuracy	The source data is automatically processed. Low confidence outcomes and buildings not visible on imagery will be included.
Currency / Data Updates	Supplier’s three-yearly cyclic revision programme or where changes occur to topographic features following the standard revision policy for such features. These updates will be processed at least monthly.
Supply Type	Full Supply and Change-Only Update (COU)
Supply Format	GeoPackage and CSV (OS Select+Build); GeoJSON (OS NGD API – Features)

## Roof Shape data


Theme	OS NGD Buildings
Collection	OS NGD Building Features
Feature Type	Building
Version	4.0 onward
Coverage	Great Britain
Geometry	Not applicable – attributed to Compound Building
Scope	All buildings >4m²
Data Sources	Data extraction by automated methods using OS topographic data, imagery and height data.
Completeness	All buildings in OS topographic data, subject to the availability of imagery and height models.
Thematic Accuracy	The source data is automatically processed. Low confidence outcomes and buildings not visible on imagery will be included.
Currency / Data Updates	Supplier’s three-yearly cyclic revision programme or where changes occur to topographic features following the standard revision policy for such features. These updates will be processed at least monthly.
Supply Type	Full Supply and Change-Only Update (COU)
Supply Format	GeoPackage and CSV (OS Select+Build); GeoJSON (OS NGD API – Features)

## Roof Solar Panel Presence data


Theme	OS NGD Buildings
Collection	OS NGD Building Features
Feature Type	Building
Version	4.0 onward
Coverage	Great Britain
Geometry	Not applicable – attributed to Compound Building
Scope	All buildings >4m²
Data Sources	Data extraction by automated methods using OS topographic data, imagery and height data.
Completeness	All buildings in OS topographic data, subject to the availability of imagery and height models.
Thematic Accuracy	The source data is automatically processed. Low confidence outcomes and buildings not visible on imagery will be included.
Currency / Data Updates	Supplier’s three-yearly cyclic revision programme or where changes occur to topographic features following the standard revision policy for such features. These updates will be processed at least monthly.
Supply Type	Full Supply and Change-Only Update (COU)
Supply Format	GeoPackage and CSV (OS Select+Build); GeoJSON (OS NGD API – Features)