NRIs who are looking to set up businesses here in India have the capital and most importantly, are willing to invest in an office space in commercial hubs like Lower Parel.
This seems to be a trend as many employees particularly in the IT sector in the US have seen the burgeoning opportunity in the indian IT sector and the internet space.
These candidates are most likely to drive up the demand for office spaces in commercial zones in Mumbai.

So i would say, any builder with a ready to use office space in Lower Parel and other commercial zones would gain significantly with the NRI influx.