Contact Us

Common Impact

The Athenaeum Building
215 First Street, Suite 25
Cambridge, MA 02142

Phone: (617) 492-3105
Fax: (617) 492-2605

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How to Find Us

On the Subway (The "T")

  • Take the red line to Kendall Square.
  • When you come out of the T, walk East on Main Street (toward the river).
  • When you get close to the river, turn left onto First Street.
  • 215 First Street will be on your left, in the Athenaeum Building.
  • Our office is on the ground floor of the building. When you enter, go to Elevator C (down the hall to the right of the security desk), take the elevator down one level, and proceed down the corridor to your left. Our office will be the second door in the hallway.
  • Plan your trip at the MBTA website

Driving from North or South of Boston

  • Take Route 93 to exit 26 (Route 28 towards North Station)
  • When you get off the exit, you will want to head toward Route 28 North (driving by the Museum of Science). To do this, go straight off the exit ramp, turn left on Nashua Street, and take an immediate right onto Route 28.
  • At the first light after the Museum of Science, turn left onto Commercial Ave / Edwin H Land Boulevard toward the Cambridgeside Galleria Mall.
  • After you pass the Cambridgeside Galleria Mall, turn right at a traffic light onto Binney Street.
  • Take your first left onto First Street.
  • 215 First Street will be a block up on your right, in the Athenaeum Building.
  • Our office is on the ground floor of the building. When you enter, go to Elevator C (down the hall to the right of the security desk), take the elevator down one level, and proceed down the corridor to your left. Our office will be the second door in the hallway.
  • Parking at our office

Driving from the West

  • Take I-90 to Exit 18 for Cambridge.
  • At the end of the exit ramp, you will proceed straight through the lights and cross the bridge over the Charles River. (You will be on River Street.)
  • Just after you cross the bridge, turn right onto Memorial Drive.
  • Stay on Memorial Drive for about two miles. As you approach the Longfellow Bridge, stay right at the split to remain in Cambridge. (Do not take the road into Boston).
  • Just after the Longfellow Bridge, Memorial Drive will curve sharply to the left. At the first traffic light after this curve, turn left onto Binney Street.
  • Take your first left onto First Street.
  • 215 First Street will be a block up on your right, in the Athenaeum Building.
  • Our office is on the ground floor of the building. When you enter, go to Elevator C (down the hall to the right of the security desk), take the elevator down one level, and proceed down the corridor to your left. Our office will be the second door in the hallway.
  • Parking at our office

Parking at Our Office

  • There are a number of two-hour metered spots around the building.
  • There is a small hourly parking lot next to our building, which you are welcome to park in.
  • The Cambridgeside Galleria Mall is a couple of blocks away from our office and offers inexpensive parking.