From 29 April 2016, all properties in NSW with a swimming pool or spa pool cannot be sold or leased without a valid certificate of compliance or relevant occupation certificate. For leases entered into on or after this date, the property must have a certificate of compliance (for existing swimming pools) or occupation certificate (for newly built swimming pools), and a copy of the relevant certificate must be provided to the tenant. For contracts for sale entered into on or after this date, a certificate of compliance or occupation certificate issued within the last 3 years and a certificate of registration must be attached. Failure to do so may allow the purchaser to rescind the contract within 14 days of exchange, unless settlement has already occurred.