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 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)

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)