Smith and his adult son live in a house owned by Smith. At the request of the son, Brown painted the house. Smith did not authorize the work, but he knew Brown was painting the house and raised no objections. When Brown presented Smith with an invoice for the painting job, Smith refused to pay. Smith argued that he had not contracted to have the house painted. Brown brought a lawsuit against Smith to collect the reasonable value of the work he had done. There is a precedent that when a homeowner allows work to be done on his home by a person who would ordinarily expect to be paid, a duty to pay exists