Urgent repairs for NSW
The landlord is required to reimburse you for any expenses incurred, up to the maximum amount of $1000.
If you decide to carry out the repairs, make sure you follow the legislation requirements (listed below) and have the repairs carried out by a suitable repairer, someone suitably trained, qualified and licensed.
The landlord must reimburse you within 14 days for the reasonable costs of making urgent repairs. You must make a written request for reimbursement and supply the copy of the receipt/account.
Landlord's general obligations (Legislation)