🆕OS NGD Land Use enhancements - Operational Status

What is Operational Status

Known as “Status”, this is a new attribute for select features in the OS NGD Land Use, Land, Buildings, Structures, Transport (Road, Tracks or Paths and Rail) and Water Themes. ​

Operational Status describes the state of feature in relation to either its physical condition or the activity the feature is intended to support.​

• Active – the feature is currently performing the function indicated by its land use attribution​

  Inactive – the feature is recognisable, but it is currently not performing the function indicated by its attribution

• Under Construction – the feature is recognisable, but it is currently not performing the function indicated by its attribution (applies to building part only)

• Derelict – the feature is in a state of disrepair sufficient that it can no longer perform its original purpose

• Unknown – A Site has been identified, typically from aerial imagery, but we have not yet determined that function (if any)​

• Null – A location where we do not capture Status

What layers are affected by Operational Status enhancements?

The primary enhancements are to the Land Use Sites feature type:

Layers that form the topographic data within the Land Use Sites are also included in this enhancement

click the above images to enlarge them

Attribution Enhancements

There are 2 new attributes:

• Status - The state of the Site in relation to either its physical condition or the activity the feature is intended to support.​

• Status Update - Date when the attribute was last updated.​

Existing attributes have been updated with new values for Derelict status. In the example below these would be:

• Description: “Derelict Site”​

• NLUD Code: U112​

• NLUD Order Description: “Vacant and Derelict”​

• NLUD Group Description: “Derelict”​

What do you need to know about Operational Status Enhancement

Structures, Transport or Water Features are not recorded as “Under Construction”​

​Scope: ​

• Operational Status is only recorded for a subset of sites. This includes over 100 site types, viewable within the OS NGD Documentation. ​

• If a Site changes to a different type where Operational Status is not recorded, then the attribute will be made Null ​​

The capture guidance for “Derelict”: ​

• Structures which are in a ruinous, damaged, or potentially unsafe condition ​

• Structures may be visibly internally gutted and reclaimed by vegetation​

• Occupation will be extremely unlikely without major redevelopment/demolition and rebuild first​

• Surrounding land is in a neglected condition, overgrown and unmaintained. Hardstanding (made surfaces) maybe broken-up and unusable, would need to be removed and relayed to become usable again​

• There is the presence of random debris or waste​

• Not all derelict buildings will be captured in our data, because change intelligence to say when a residential house has been boarded up and now sits derelict is not available.

Where has the Operational Status data come from?​

Operational Status is determined by a mix of OS and 3rd party data sources ​

​OS data capture:​

• Interpretation of OS topographic data and aerial imagery​

• Ground survey for ongoing maintenance ​

​3rd party data:​

• Scottish Vacant and Derelict Land Survey ​

• Brownfield Land (Sites and Land datasets, England only) ​

• We are currently unable to identify a source for 3rd party data in Wales​

​

Links that may be useful:

OS NGD Documentation | OS National Geographic Databaseosngd.gitbook.io

OS Data HubOrdnanceSurvey

This content has been developed from what was originally a Lightning Talk PowerPoint slide set. These slides are available to PSGA members to view and download from the PSGA members area of the OS website