The “House” project: refashioning an 1894 barn in Concord, Mass., into living quarters. Host Kevin O'Connor and carpenter Norm Abram tour the modest barn---and a nearby mansion with a similar-sized barn that has already been refashioned. On “Ask,” projects include installing a deadbolt; pruning hedges (by hand---it's the better way to do it, says landscaper Roger Cook); and replacing a water heater that didn't heat enough water (but heated the water it did heat too much).