Schedule II Valuation and qualifying accounts:

12 Months Ended

Dec. 31, 2012

Schedule II Valuation and qualifying accounts:

Schedule II Valuation and qualifying accounts:

Franklin Street Properties Corp.

Valuation and qualifying accounts:

(in thousands)

			Additions
			(Decreases)
	Balance at		charged to							Balance
	beginning		costs and							at end
Classification	of year		expenses		Deductions			Other		of year
Allowance for doubtful accounts
2010	$	620	$	1,175	$	(195	)	$	—	$	1,600
2011	1,600		34		(399		)	—		1,235
2012	1,235		85		(20		)	—		1,300
Straight-line rent allowance for doubtful accounts
2010	100		600		—			—		700
2011	700		2		(567		)	—		135
2012	135		28		(28		)	—		135