3522 Errington Avenue N Great Opportunity to own this mixed residential-commercial mixed building in Chelmsford. It can also be a great way to get your feet wet in the commercial world if you're new to it. Unit 7 is a retail office space, not subject to rent control. The office space tenant is also month-to-month, meaning you can end the lease at any time, or even move in for an owner occupancy. Unit 2 (residential 1 bedroom) is currently vacant. Inquire for the full income and expense sheet of this cash-flowing property. (id:203)