Here is an interesting link to a site where you can build your dream house with the help of a famous architect: Frank Lloyd Wright. Click on the picture to get there and then click on "begin your design". You just have to follow the instructions and read the tips.
There are limitations, as you have to choose among the options given, but it is a funny way to learn some vocabulary about different aspects of building a house, using simple language, while you see how your dream house takes shape. This might be a good link for Technology Teachers.