On the Trainfest thread, I commented that in the past, it seems most use N to save space rather than build big industries, despite the ability to do so. First, have there been any studies or stats on the average size of N scale layouts? If so please share. N trak modules count, too! Second, maybe we can do an informal survey, by giving room size and SF of benchwork. If you have two levels, count each in the SF total. My former Cajon Pass/KC Terminal/IHB was 12 x 17 overall and would require a 15 x 17 room. Single level and benchwork was about 142 SF. My current IHB is in a 10 x 24 room, two levels and about 110 SF benchwork each level (bottom is storage/staging) for 220 SF overall. I won't build another big one, so my future IHB will be whatever fits in my apt at the old folks home....... I hope this isn't too much trouble, and might be fun as an informal survey as to just how big N scale layouts are.