So after spending a little time pondering it I have begun work on the next house, number 18.
I spent an evening in the week cutting out the blanks for the main wall sections.
It's quite a different shape to the other houses in the estate and these wall sections were quite straightforward to cut out.
Quite a few of them will remain blank, with no windows, while others have only a couple.
The exception is the main end section - which is the bit with two sloping edges at the top - which needs to have around half a dozen openings cut into it.
Won't that be fun!