This is a long shot question, but is there a front opening dollhouse out there with 12" ceilings? I'm a newbie and I've only dabbled in vignettes and simple room boxes, but I prefer the realism achieved with that ceiling height.
The only examples I'm familiar with that use higher ceilings are Jon Fish and Larry Osborn's houses ("The Guys From Texas"). I realize scratch building is probably my only option (bespoke is totally out of my budget) but if anyone can at least direct me to pictures of similar projects it would be very helpful.