I do recall having the dining table totally cleared off so I had room to lay all the card sheets out - think there were 14 A4-size card sheets, and two of clear plastic for the windows and conservatory.
Knowing the real house pretty well from when I was in the National Trust helped a lot, as the instructions were a bit vague in places and one section of wall )that doesn't show) I had to construct from scratch. Guess they figured if it won't be seen why include it - but we Wildings are made of sterner stuff!
Needless to say I didn't build any cars while this was on the go. Probably about two months, I rec kon.
My son promptly sold the mpodel, split the takings 50/50 with me and presented me wiyth a second kit to build. No. Just no!