All quite possible, you could also, for example, live in a your smaller house in winter, live on your smaller, cheap boat in summer, We find that keeping the boat across the channel is cheaper, even allowing for the cost of travel, its called having your cake and eating it, it takes a really close eye on a tight budget and a lot of organising but if, for another example, you have a dog then holidays are not a problem, get it a passport, chuck it in the car, tell it that snails are really very nice and off you go.