47 In Western Australia, the erection of a building requires two separate types of local government approval: planning approval and building approval. The requirement for planning consent with respect to the use and development of land is a requirement of a Shire's town planning scheme which is made pursuant to the Town Planning and Development Act 1928 ("the TPAD Act") and has statutory effect. Building approval is granted in the form of a building licence which is required by s 374(1) of the Act and reg 13(1) of the Building Regulations 1989. In view of the appellant's allegation that he was told he did not require a further building approval for the games room because it was appurtenant to the dwelling house, it is necessary to set out the types of structures or building works that require a building licence under s 374(1). Sub-section (1) provides that, until the prescribed form, a copy of the specifications and a plan clearly showing the proposed structure is submitted to the local government and the local government has granted approval by issuing a building licence, "[n]o person shall - (a) lay out for building, or commence or proceed with a building on, land in a district; or (b) in respect of the structure of a building already erected on land in a district, amend, alter, extend, or enlarge, or commence or proceed with the amendment, alteration, extension or enlargement of the structure of the building". It can be seen that the provision is extremely wide in its terms and even applies to changes to a structure already erected on the land, such as the dwelling house. Even if a structure could be said to be appurtenant to another, a separate building licence would be required.