Errington v Errington
 1 KB 290
Father bought house subject to mortgage and promised his son and daughter-in-law they could have the house when he died if they made the mortgage . They did. The father died and left the house to his widow. Was there a contract for the sale of the house?
Yes - there was a unilateral contract between the father and the couple. The father promised to convey the house if they paid the mortgage; the children made no reciprocal promise to make payments, but the contract was held to be binding unless they stopped making payments.