My girlfriend lives in an old house in an even older city (Poughkeepsie, New York). The building has obviously been subletted and then rebuilt. We think it was a one family, then a two-family, and now it's a one-family again. The layout is so weird with five bedrooms (one being in the attic), two kitchens and no living or dining rooms that we're really curious to find out what looked like originally. How can we go about digging up these kinds of records? Is there any way to find old floor plans or building codes from public records online or off? Further, can we find out about past owners and tenants?