By Richard MizeReal estate editor rmize@oklahoman.comSkyrocketing lumber prices have added $10,000-$15,000 on average to the cost of a new house, so a reduction in duties on Canadian imports has local as well as international impact. The rapid runup in prices this year caught builders by surprise "with each builder managing the price increase in different ways," said Andrew French, president of the Central Oklahoma Home Builders Association.Read more on NewsOK.com