I don't know, but it must have been some time after June 2003, as their 'expresslane' newsletter for that month doesn't list the Davis Square location.
Their newsletters are available here, but they did not publish any between June 2003 and August 2007.
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Date: 2009-07-12 04:21 pm (UTC)Their newsletters are available here, but they did not publish any between June 2003 and August 2007.
Edit: This architect's page says the store opened in 2003.
Did you know that they used to have another location at Twin City Plaza?