3. Maris Construction Co. agreed to build a house for Lee in accordance with certain specications. The price stipulated was 1545.000. The contract provided that the house was to be completed and ready for occupancy by June 1. 1960. The Construction Co. wrongfully refused to perform and repudiated the contract before anything was done there- under. Lee. after some trouble. located'another contractor who built the house. according to the same Specications. for $53,000. The house was built and completed on September 1. 1960. Lee then sued Maris Construction Co. to recover damages for breach of contract. What is the measure of damages recoverable by Lee