The defendants support the challenged resumptions by relying upon the combined operation of the State Housing Act 1946-1948 W.A., and the Public Works Act, 1902-1945 W.A.. The objects of the former Act are stated by s. 5 to be the improvement of existing housing conditions and the provision of adequate and suitable housing accommodation for persons of limited means and certain other persons not otherwise adequately housed. The Act sets up a housing authority called the State Housing Commission, which, subject to any directions of the Minister, is charged with the administration of the Act and is given extensive rights, powers, authorities and duties: s. 8 (1). It is constituted a body corporate and is given, subject to the Act, power to acquire, purchase, sell, lease, hold and dispose of lands and other property for the purposes of the Act: s. 8 (2). It is also empowered with the consent of the Minister to purchase, contract for the use of, or otherwise acquire any land, and also power, in terms to be mentioned in a moment, to acquire land compulsorily: s. 21 (1) (a) and (b). Amongst the powers with which the commission is clothed are powers with the consent of the Minister to erect houses on, and lay out and construct as streets, any land so purchased or acquired or any other land acquired, to set apart any land for gardens, parks, recreation grounds and certain other community and social facilities, and a power to sell, let or lease any such land for any one or more of the purposes: s. 21 (1) (e) (f) (g).