Kit built normally is a milled log home with the logs flat on the top and bottom and a tongue and grove system. There are many different brands, but probably 75% of log home now days are kit style. Handcrafted log homes are bigger logs not fit over the lower one (unless it is a Swedish cope) and have the wider chink lines. Kit homes are normally not caulked or chinked although they should be. Just a cheaper selling tool.