41 Exhibition Street, Melbourne (41X) is a 5-star Green Star and 5-star NABERS Energy Rating building, which was designed by Lyons Architecture, developed by the Australian Institute of Architects and completed in March 2014.

41X is a lean 22 storey office tower on the corner of Exhibition Street and Flinders Lane.

It is the first strata titled commercial office building in Melbourne to target carbon neutrality over its 30 year operating cycle.

MH Exhibition Street purchased Level 16 off plan for $2.059 million prior to commencement of the development and has leased the 16^th floor to L2D Architects and Marks Henderson Head Office.

Subsequent sales of strata floors in the building have traded from $4 million to $5 million per floor.