The Charlestown project enters the homestretch, and there is evidence throughout the house that the end is in sight. The flooring for the basement hallway, made of bamboo, is installed. On the first and second floors, the marble kitchen countertops go in, bringing the kitchens one step to completion. And finally, host Steve Thomas tours a small foundry in San Francisco where historically accurate brass doorknobs for the front entryway were crafted.