There are 4,800 new, single-family homes built in the greater Boston area each year, according to the National Association of Home Builders. Since 1934, National Lumber has been supplying local builders with the materials necessary to sustain that level of construction.

"We are now the largest independent lumber business in New England," says Steven Kaitz, who is the company's Co-CEO along with his sister Margie Kaitz Seligman.

"Advertising has been part of our continued growth over the past 25 plus years," says Mr. Kaitz. "Advertising on Boston radio is, by far, the largest part of what we do. It allows us to reach both builders and homeowners."