JUDGMENT

Rajendra Babu, J.-The respondents are engaged in building of flats and houses for which purpose they buy materials such as sand, bricks and granite from persons other than registered dealers. These items have not suffered any sales tax.

2. The Assistant Commissioner of Commercial Taxes, Enforcement, called upon the respondents by a notice dated January 19, 1982 to appear before him with their accounts relating to purchase of raw materials effected by them commencing from April 1, 1977. The respondents sent a reply to him stating that they do not trade in any goods; that they construct and sell flats; that they are not registered dealers; that said purchases do not attract tax under Section 6-A of the Andhra Pradesh General Sales Tax Act, 1957 (hereinafter referred to as the Act ). Not being satisfied with the reply filed by the respondents, the Assistant Commissioner of Commercial Taxes issued a notice on March 22, 1982 under Section 28 of the Act calling upon the respondents to produce books of accounts and purchase bills and to file the details relating to the purchase of raw materials effected by them for the period commencing from April 1, 1977. Aggrieved by the said n