A friend of mine had her kitchen used by a location company for an advert. They used her sitting room for make up, were very careful - obviously anything breakable was put away first - and everything went well. They brought sandwiches and tea bags, and left their cars outside - they all arrived separately. They were very polite and we watched the ad being made, very interesting. Paid well too ! I would think the house makeovers would use lots more people and make lots more mess. Probably worth it though.