“Using an older version of Green Star is like going to the Apple Store and asking for an iPhone 2,” Wood & Grieve Engineers’ Prasanna Suraweera said recently.

WGE’s sustainability manager, Suraweera has been advising his clients to use the new rating tool, which he says is simply a matter of “future proofing.” “If you’re trying to lease a building, you want to make sure it’s benchmarked to the latest rating tool. From an asset valuation point of…