SWATANTER KUMAR, J.

( 1 ) THE appellants are the legal heirs of Late Shri O. P. Sharma who had entered into a contract with the Delhi Development Authority for execution of the work i. e. construction of 900 SFS Houses at Sarita Vihar, Blocks F and G. The construction was to be executed as per specifications and in terms of the agreement bearing no. 27/ee/cpd-II/dda 85-86. In terms of the agreement, 18 blocks were to be constructed but after the award of the work, a letter was issued by the Delhi Development Authority (for short 'dda') on 29. 9. 1987 stating that as the site for remaining 4 blocks would be handed over to O. P. Sharma as and when the same is available. However, in August 1988 another letter was written by the DDA stating that the scope of the work for the remaining 4 blocks had been curtailed due to a stay order in respect of the land in question and the work would be restricted to 14 blocks only. The relevant portion of the said letter reads as under:-"therefore, I, G. R. Jain, E. E. /s. E. D.-1 for and on behalf of the DDA by way of this notice inform you under the Clause-13 of the Agreement ibid, that the scope of the work stands curtailed to 14 blocks completed