A few years ago I was itching to spend some money at Frank's Nursery as I had a coupon for half-off on any item in the store, and I happened to spot a dollhouse kit. Here is that dollhouse and a selection of some miniature furniture I've built. Here's the front of the dollhouse. Click on the picture to see a larger version. The Back of the Dollhouse showing the rooms.
Every room has working lights.
Again, click on the picture to see more detail. Here's a rolltop desk and a chair to go with it, made of mahogany. This is the most detailed miniature I've built yet. Everything works, right down to the secret hidden panel behind one of the cubbyholes on top. Here's a couple more views of the desk, showing the working doors and drawers.