Who is responsible for routine repairs and maintenance?

The Act specifies that the lessor is responsible for:

Maintaining the premises in such a way that the premises remain fit for the tenant to live in, and
Maintaining the premises and inclusions in good repair, that is, in a good working condition, having regard to their condition at the start of the tenancy.
The tenant should inform the lessor/agent of any maintenance that is needed, preferably in writing.  A Notice to Remedy Breach (Form 11) may beused for this purpose. The lessor/agent is then responsible for arranging for the repairs to be carried out within a reasonable time.  For more information see the Rental premises – use, condition and repairs fact sheet.