I used treated pine and it took about 16 hours. Cost of material around $80.00. Have not stained or sealed the wood yet. But that is next. This is my first wood working project so we had no scrap wood to use. My wife and i enjoyed making this bench for our garden very much. Thanks for a great set of plans. They were perfect! We will be using an English chestnut stain and a urethane varnish wood sealer.