( 1 ) THE petitioner, C. S. R. Estates Flat Owners Welfare Association, Kothapet, ranga Reddy District, has filed this writ petition for a writ of Mandamus or any other appropriate writ, order or direction declaring the action of respondent No. 1 i. e. , Hyderabad Urban Development Authority, in granting modification in building permission vide proceedings No. 696/p4/h/94, dated 2-1-1988, in favour of respondent No. 3, as illegal, arbitrary and contrary to law. By the impugned proceedings, the respondent No. 1 has permitted certain modifications and alterations in the original sanctioned plan dated 19-7-1991 in favour of the respondent No. 3, who is a builder. This action of respondent No. 1 is now being challenged by the petitioners association.

( 2 ) IN the affidavit filed in support of the writ petition it is alleged by the petitioners association that it is a registered association under the Societies registration Act and the petitioners association consists of all the flat owners residing in the apartments known as C. S. R. Estates, situated at Kothapet, Ranga reddy District. The respondent No. 3 is the builder of the said apartment. It is further stated th