> For the complete documentation index, see [llms.txt](https://docs.os.uk/osngd/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.os.uk/osngd/code-lists/code-lists-overview/buildingpartlandcovertierbvalue.md).

# buildingpartlandcovertierbvalue

This code list is used in association with the OS Land Cover Tier B attribute which is present within the Building Part Feature Type. The code list provides a detailed description of the land cover type for the building feature. Up to five distinct land cover types can be applied.

{% tabs %}
{% tab title="v2.0" %}
V2.0 of the code list was released on 17 July 2025.

### What's new?

One new value has been added to this code list for v2.0:

* Under Construction – A site where building work is being undertaken.

The new value has a 'new' emoji (🆕) against it.

| Label                    | Definition                                                                              |
| ------------------------ | --------------------------------------------------------------------------------------- |
| Building                 | A roofed structure.                                                                     |
| Made Sealed              | A manmade surface that consists of a solid material that is bonded (i.e. is not loose). |
| :new: Under Construction | A site where building work is being undertaken.                                         |
| {% endtab %}             |                                                                                         |

{% tab title="v1.0" %}
V1.0 of the code list was released on 29 September 2022.

| Label         | Definition                                                                              |
| ------------- | --------------------------------------------------------------------------------------- |
| Building      | A roofed structure.                                                                     |
| Made Sealed   | A manmade surface that consists of a solid material that is bonded (i.e. is not loose). |
| {% endtab %}  |                                                                                         |
| {% endtabs %} |                                                                                         |


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