Under the Housing Health and Safety Rating System (HHSRS) the causes of pest infestation and the impact on the tenant is high on the agenda and is one of the 29 Hazards. Health hazards due to poor design, layout and construction can make it hard for the occupant to keep the property clean and hygienic, and as a result pests can be attracted.

The HHSRS takes into consideration the following: -

• Access into and harbourage within the dwelling for pests

• Insect infestation (e.g., cockroaches) and infections (spread by insects and rats and mice)

• Access into and harbourage within the dwelling for pests

• Inadequate and unhygienic provision for storage and disposal of household waste.

• Inadequately stored/accumulated refuse allowing access for insects, rodents, pests, birds, squirrels, foxes

• Service ducts and holes around pipes e.g., central heating harbour insects and provide access between dwellings in blocks

• Access to open drains by rodents

• Access for rodents by means of ill-fitting doors and windows

• Uneven and/or cracked internal walls and/or ceilings allowing access for pests

• Missing/damaged brickwork including airbricks to external walls and other disrepair to external walls and roof

Therefore, it is up to the landlord to ensure that the property is fit for human habitation.