PORTLAND — J.B. Brown & Sons is looking to rezone about 10 acres of land it plans to buy on West Commercial Street, adjacent to the Star Match building the company already owns.

Vincent Veroneau, president of J.B. Brown, said the company expects to close on the property in the next few weeks. The land is currently owned by the Pan Am railroad company. Veroneau declined to disclose the sale price.

Veroneau said the company would like to build a three-story, 67,000-square-foot building on the site. The Star Match building, which J.B. Brown has owned since 1974, is about 40,000 square feet, he said.

The exact size and design of the building would depend on the lead tenant, Veroneau said. Although some companies have expressed interest in renting office space on the site, marketing won’t begin in earnest until the land is rezoned, which is not expected to take place before early next year.

Most of the property would be rezoned for business use. A small strip of land along Danforth Street would retain its residential zoning, said Bill Needelman, Portland’s senior planner.

A workshop on the rezoning proposal will be held on Nov. 8 at 3:30 p.m., Needelman said.