# OS MasterMap Greenspace Layer Overview

OS MasterMap Greenspace Layer gives a comprehensive view of the green spaces within an urban area. The dataset consists of topographic areas published in [OS MasterMap Topography Layer](/os-downloads/products/maps-and-imagery-portfolio/os-mastermap-topography-layer.md), with additional green space-specific attribution to describe their function. It includes both publicly accessible and private green spaces, sports facilities and natural environment features, to give a comprehensive view of spaces that are important for applications such as environmental management, health, planning, or habitat mappings.

This product is designed for PSGA customers with these uses in mind.

## Key features <a href="#id-1.1-key-features" id="id-1.1-key-features"></a>

The key features of the OS MasterMap Greenspace Layer are:

* Comprehensive coverage of the natural environment in major urban areas.
* Identifies green spaces, both public and private.
* Built from a sub-set of OS MasterMap Topography Layer and retains the detailed features from this product and their positional accuracy.
* Inclusion of OS MasterMap Topography Layer TOID attribute to allow links between these OS MasterMap products.
* Information on both form and function of the green space areas to better describe the environment of these spaces.
* Ability to relate to the OS Open Greenspace product through the Greenspace IDs.
* Space for up to two forms and two function categories per feature to allow for complex land areas.

## Product applications <a href="#id-1.2-product-applications" id="id-1.2-product-applications"></a>

OS MasterMap Greenspace Layer supports a wide range of customer applications that use geographical information. The product can be used on its own, or combined with other Ordnance Survey products, such as [OS MasterMap Topography Layer](/os-downloads/products/maps-and-imagery-portfolio/os-mastermap-topography-layer.md), [OS MasterMap Sites Layer](/os-downloads/products/land-and-terrain-portfolio/os-mastermap-sites-layer.md), and [OS Open Greenspace](/os-downloads/products/land-and-terrain-portfolio/os-open-greenspace.md). Applications of the OS MasterMap Greenspace Layer product include, but are by no means limited to:

* Providing detailed data to support audit, policy, planning, environmental planning, and research.
* Analysing air quality and use of amenities.
* Managing and planning green spaces efficiently.
* Evaluating Britain’s natural habitat and environment.
* Encouraging activity for all, improving mental and physical health.


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.os.uk/os-downloads/products/land-and-terrain-portfolio/os-mastermap-greenspace-layer/os-mastermap-greenspace-layer-overview.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.