Good idea but needs a lot of work on it. And as soon as you mention your doing up your house loads of friends appear offering to do this and that as they're in the trade, so be wary. Especially if it's the wife saying her husband will do the job at reasonable cost! Best thing to do is say can you pay by debit/credit card, if its no, cash only run a mile! Never pay cash to any tradesman. You've no proof of payment unless there's a fully printed itemised bill.