Conveyance deed

Sir,

         Our CHS is situated at Navi Mumbai which is registered by us (not the builder) about 3/4 years back.  The builder has not done conveyance so far.  Now, we on our own, have moved for it.  I would like to know whether the builder's NOC is must for it?  If yes, is there any format available for it?  Kindly give it to me.  I am Secretary of the Society. 

Thanks,

Regards,

Umesh Prabhale