Here are some; the first one is free and the other 2 cost a little. Just remember to reduce 1/32 by 24% to get 1/43.
http://www.132er.de/pages/basteltips/au ... bibox.html
http://www.miniature-planet.com/product ... p;cookie=1
http://www.thevirtualarmchairgeneral.co ... Homes.html
Do a search for printable cardstock buildings, you'd be amazed at what's out there.