The external areas must be maintained in good order.
Where buildings are surrounded by grassed or planted areas, they must be regularly tended, well-maintained and free from items that could potentially harbour pests.
The areas immediately surrounding buildings on site must have adequate drainage to prevent pooling of water and allow for cleaning.
If the external maintenance is the responsibility of another party (e.g. neighbouring site, landlord etc.) the site must work with those parties to ensure external areas do not pose a risk.