B 17 and bahria phase 8 commercial and home query (not in future but of today)

Both are promising societies but now for some time prices are adjusting and in correction phase..

My question is .. Is it possible to buy a shop and rent it out straight away in b-17/phase 8 or have to wait for population growth for commercial activities ?? By the way what is expected rent on 10 marla house today in b-17 and in phase 8 ??