Sale of building before issuance of completion certificate / first occupation is treated as:

1. Schedule II para 5(b) treats construction of a complex/building intended for sale to a buyer as supply of services. 2. The proviso excludes consideration received AFTER completion certificate / first occupation (then it is sale of immovable property — outside GST). 3. Therefore pre-CC sale of an under-construction unit is a taxable supply of services. _Source: ICAI BoS CA Final Paper 8, Ch 3 "Levy and Collection of Tax", §Sched II para 5(b)_