About DTX 399
77,000-square-foot existing building built in 1881 located across from the new Millennium Tower. DTX 399 features 70 feet of street frontage along Washington Street. LaSalle Investment Management and L3 Capital will redevelop DTX 399 into six stories of prime retail and creative office space. DTX 399 has been largely vacant since former ground-floor tenant Barnes & Noble closed in 2006.