You will need an account with a retailer to connect gas to your home.
When building a new home your builder will submit a formal request to a retailer of your choice after discussing the gas appliances you want in your home.
For an established home without an existing connection, a licenced gas fitter can install a new connection if gas is available in your area. They will then submit a formal request for a new connection to a retailer of your choice.
To help select a gas retailer visit their websites to find out more.