I also got dd a wooden dollhouse at age 3, and I had quite a time finding one that wasn't really expensive. Then I found this one:
http://www.toystogrowon.com/display/...2712643&id=389
It's not as 'fancy" or detailed as some of the others, but the thing I like about it is that the entire front and sides are open, so it is very easy to play with, even for two children to play with together. The Plan house has outer walls and children need to do a lot more reaching around.
Of course, the best thing was that it came with about 40 pieces of adorable furniture, and the whole thing cost $100, which is what many houses cost without the furniture. We bought the dolls...they're soft and bendable and come in a few skin colors, as you can see in the picture.
It was easy to put together and has held up great, and I figure when she's older we can add wallpaper and carpet and so on as a huge art project!