I remember walking by daily when they installed the grass getting increasingly nervous day-by-day they weren't going to water it - sure enough was dead in about 1 month after install and never saw any watering. Wouldn't hurt to have had few trees there too.
Signs, trees and grass - all small and relatively cheap stuff in the scheme of a big new mid-rise building - but details so often missed. Just sloppy, lazy behaviour and apparently no part of the development regulatory system seems able/willing to enforce any of this to encourage better behaviour.