( 1 ) THIS is a writ petition whereby the petitioners seek quashing of the letters of demand issued by the DDA to the petitioners in respect of 5th and final instalments for the flats allotted to them on the ground that the same have been determined arbitrarily.

( 2 ) THE first petitioner is a Society of flat owners, registered with the Registrar of Societies. Remaining petitioners totalling 125, are the members of the Society who were allotted flats by the third respondent, DDA under Self Financing (Housing Registration) Scheme. Fourth respondent, the Deputy Director (H-1) is the functionary of DDA. While the first respondent is the Union of India, the second respondent is the Administrator of the Union Territory of Delhi and is the ex-officio Chairman of the third respondent.

( 3 ) THE third respondent came out with self Financing House Registration Scheme. This Scheme was announced and advertised in the edition of Hindustan Times dated 28/08/1977. An announcement was also-made by the DDA in the form of a pamphlet titled "your Investment for Your House" (for short Announcement"), The Announcement indicated that fla were to be constructed in Basant Enclave, Munirka,