I write up a proposal for a quote. An estimate is just an estimate and I make the terms clear. I don't get into alot of legal mumbo jumbo just the work to be done the price and the payment terms. I sign and send two copies with a return envelope addressed and stamped. Seems to work out pretty well. I have seem some local plumbers contracts that have a half page outlining the work and two pages of small print outlining the disclaimers one of which I liked, it read " not responsible for keeping pets in house or yard" .
