New South Wales gives landlords the widest discretion in the country. Under section 75(1) of the Residential Tenancies Act 2010 (NSW), a landlord may refuse a transfer or sublease of the whole tenancy whether or not the refusal is reasonable. A refusal must be reasonable, however, where the change only adds tenants alongside an original tenant or covers part of premises the tenant still occupies. Section 75(3) confirms that refusal is justified where occupant numbers would exceed the permitted limit, the applicant is listed on a tenancy database or the landlord reasonably believes the premises would be overcrowded. NCAT can authorise a partial arrangement, and section 74(2) limits charges to reasonable expenses.
Victoria uses the terms renter and residential rental provider. Section 81 of the Residential Tenancies Act 1997 (Vic) bars an unreasonable refusal for the whole or any part of the premises, and a refusal based on an attribute listed in section 6 of the Equal Opportunity Act 2010 is unreasonable by definition. A refused renter can apply to VCAT under section 82. Order matters here, because a provider can give a notice to vacate with at least 14 days' notice under section 91ZV if the renter assigns or sublets without consent.
Queensland gives the lessor a qualified discretion under section 238 of the Residential Tenancies and Rooming Accommodation Act 2008. The lessor must act reasonably, and a capricious or retaliatory refusal is unreasonable. QCAT may authorise the arrangement under section 239, and section 240 restricts payment to reasonable expenses on pain of 20 penalty units.
Western Australia takes a contractual approach. Section 49 of the Residential Tenancies Act 1987 (WA) allows the agreement to permit assignment and subletting, prohibit it, or allow it only with written consent, and the consent model applies where the agreement is silent. Under that model the lessor cannot unreasonably withhold consent or charge beyond reasonable expenses, and disputes go to the Magistrates Court.
South Australia is the strictest on cost. Section 74 of the Residential Tenancies Act 1995 (SA) bars unreasonable refusal for the whole or part of the premises and treats discrimination under the Equal Opportunity Act 1984 as unreasonable. Registered community housing providers keep eligibility-based grounds. SACAT can rule consent unnecessary under section 74A, and section 74B makes demanding any fee for consent an offence.