Flexible 6,000 SF Office / Lab / Medical Space for lease in an established downtown Waltham infill location, surrounded by residential neighborhoods and a variety of local amenities. The recently refreshed space is available for $22/SF NNN lease. The property features an expanded entry and waiting area, abundant natural light, and existing rooms configured for office, medical, dental, laboratory, examination, or treatment-room use, subject to applicable approvals. The space is supported by substantial existing infrastructure, a two-zone Burnham heating system with 164,000 BTUs, a three-zone cooling system with three Carrier AC compressors, and three American Standard air handlers totaling 140,000 BTUs. Electrical service is 1,000 amps. Additional building systems include Verizon telecommunications, engineering controls, automatic sprinkler systems, and laboratory ventilation systems. The property offers 17 dedicated on-site parking spaces and convenient access to the post office, hotels, shops, restaurants, and fitness facilities. Preferred lease terms are three or five years, with extension options available.