Henfield Common  covers 19.83 hectares to the east of the village and is a designated Local Wildlife Site

Local Wildlife Sites (LWS), formerly known as Sites of Nature Conservation Importance, are non-statutory sites that contain features of substantive nature conservation value.

Henfield Common is an expanse of flowered meadow grass, boggy reed bed and woodland crossed by a raised causeway footpath from the village to the adjoining Brighton Road

In 2018 The Joint Commons Committee commissioned a 10 year Management Plan . This plan now forms the basis of the management effort on Henfield Common