1. If you get a good buyer at this point of time, you can enter into a sale agreement with him for which the number of the parties would be two- buyer and seller.
2. However when the builder would be going to sale deed in your favour then you would make a tri artie deed wherein the developer would sell this to your buyer and you would appear as Confirming Party.
3. For delay in completion certification you would not be liable in any way.