*FREE: House sitting is usually free, for both sitter and house owner, although this is completely up to the individuals. There are usually some costs that need to be covered by either the sitter or the house owner e.g. electricity, phone usage, vet fees etc. How these costs are handled needs to be agreed before the sit begins. House sitters pay a single annual membership fee, while house owners pay nothing to advertise their house or to contact sitters.