The roads in this area are not up to date.
Google maps has an aerial photo that is about a year old that shows the road layout as it is now:
https://www.google.co.uk/maps/@52.1719653,0.1077014,249m/data=!3m1!1e3

The area to the north of Proctor Drive (with a tree in the middle) is a park called 'The Orchard'
The houses along the northern stretch of Piper road are numbers 7, 11, 13 and 15
The house that faces onto The Orchard is 9 Piper Road.