The tenant is responsible for keeping and leaving the property in a reasonable state of cleanliness, ensuring that the property is in a similar condition to that which existed when the tenancy started, except for Reasonable wear and tear .
If the tenant caused the need for repairs, they must pay the costs of the repairs.
When to notify the owner
If repairs are needed, the tenant must notify the owner within 7 days. This should be in writing, and the tenant should keep a copy of the letter/email/text.
Tenants are also required to ensure that all smoke alarms are regularly tested and kept clean so that they work properly.