# 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

<figure><img src="/files/ShyjuZLf7CmQ5Q2LLbiV" alt="Image with 6 photographs illustrating examples of the 6 operational statuses"><figcaption><p>Examples of the Operation Status</p></figcaption></figure>

## What layers are affected by Operational Status enhancements?

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

<figure><img src="/files/cRqbkWNRWiDxtg6baWAD" alt="OS NGD Land Use features" width="239"><figcaption></figcaption></figure>

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

<div><figure><img src="/files/Bz5VFE3xAZcasr5JrCsS" alt="OS NGD Land features"><figcaption><p>Land</p></figcaption></figure> <figure><img src="/files/bjw5YkXFrxydvYoxTEgn" alt="OS NGD Structures features"><figcaption><p>Structures</p></figcaption></figure> <figure><img src="/files/deDfSPOitusB8hnlmxKB" alt="OS NGD Road, Tracks and Paths Transport features"><figcaption><p>Road, Tracks or Paths</p></figcaption></figure> <figure><img src="/files/Pyhl2WXcHY5roumfr0v6" alt="OS NGD Rail Transport features"><figcaption><p>Rail</p></figcaption></figure> <figure><img src="/files/ugsi8aoDuPkhLSSLWPua" alt="OS NGD Water features"><figcaption><p>Water</p></figcaption></figure> <figure><img src="/files/9Vi0jQCCsEWp9F4Zz7IM" alt="OS NGD Building Part features"><figcaption><p>Building Part</p></figcaption></figure></div>

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”​

<figure><img src="/files/7qVx9SZrZKLn4M5XbxEi" alt="Image of a map and a table showing Operational Status attribution for a Derelict Feature "><figcaption><p>Operational Status attribution for a Derelict Feature </p></figcaption></figure>

## 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.

<figure><img src="/files/j7Rj6xTxy54xANOeRbjp" alt="Image of 7 OS NGD Sites with Operational Status attribution" width="563"><figcaption><p>OS NGD Sites with Operational Status attribution</p></figcaption></figure>

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​

​

<figure><img src="/files/pvSxLOjoB5nFn8eDMKMF" alt="Image showing OS NGD Land Use sites with Operational Status" width="563"><figcaption><p>OS NGD Land Use sites with Operational Status</p></figcaption></figure>

***

Links that may be useful:

{% embed url="<https://osngd.gitbook.io/osngd/>" %}

{% embed url="<https://osdatahub.os.uk/>" %}

{% embed url="<https://www.ordnancesurvey.co.uk/business-government/products/os-select-build>" %}

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](https://auth.ordnancesurvey.co.uk/my.policy)


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