firstly thanks for the summary!
ignoring the exhibition space increment as its about 10 pc of the total.
say 1500-1700crs for 2.4m sq feet for it building. and i guess if building 4 expected to get 200crs when fully rented out. building 2 would be at about 300crs on the current prices. that is a 20pc expected yield. this will be higher as the rents should increase between now and when the building is ready. but i guess it will still below the 30pc expected yield on building 4. building 1, if i remember correctly, had a cost of 200 crs and the first year yield was close to 50pc.
20+pc is still very good. but there seems to be a 50->30->20+ downward trend in expected first year yield. this when land is essentially free for nesco. i wonder how the rest of the developers survive.