(Review requested)

Welcome to OpenStreetMap and thanks for updating this.

The only thing I might change would be to split the roads where they pass through/under buildings, using the tag tunnel=building_passage rather than layer=-1. Therese more information at https://wiki.openstreetmap.org/wiki/Tag:tunnel%3Dbuilding_passage

Could I ask you about access on roads within the development? If there's a gate at the entrance from the public part of Lisgar Terrace and visitors/taxis/delivery vehicles need to be let in, then the current access=private is fine. If visitors can just drive in, then ownership=private + access=destination might be a better fit.