Hours of Operation: We are open for tours by appointment only and during special events. Send an email to arrange a tour or check the Events page to see scheduled events.

Directions: The Chelmsford Historical Society is based in the Barrett-Byam House at 40 Byam Road in South Chelmsford, MA 01824. This historic farmhouse, built circa 1740, is located 1¼ miles from Chelmsford Center. Follow Acton Road (Route 27) one mile from the Center, then turn right onto Byam Road. Continue on Byam Road a quarter mile to the Homestead on your left.