Hammond Lumber Company, founded in Belgrade and the second largest family-owned business in Maine, is expanding. The company announced Tuesday morning it is buying Ware-Butler Building Supply, allowing Hammond to expand its retail footprint from 22 to 34 locations across Maine and New Hampshire. The deal is expected to close on July 31. Terms of the sale were not announced Tuesday. The transaction includes 15 Ware-Butler retail locations in Maine: Corinth, Dixfield, Dover-Foxcroft, Gorham, Greenville, Kingfield, Livermore Falls, Madison (Route 201), Madison (Main Street), Mexico, Orrington, Palmyra, Stillwater (Old Town), Waterville, and West Enfield. Hammond will consolidate the Dixfield, Greenville, and Orrington locations into existing nearby Hammond branches. All Ware-Butler employees will be offered continued employment, including relocation to nearby branches when possible.