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Mile-Ex office space For Lease - #1
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New Plug & Play Space on the 6th floor

Upon construction, 400 Atlantic’s ten-storey structure immediately became a landmark in the Marconi-Alexandra neighbourhood, known today as Mile-Ex. 400 Atlantic has the attributes of light industrial buildings, which can satisfy the needs of the most discerning office users: high ceilings, abundant natural light, exposed structural frames, interior brick and hardwood floors. Over a century after its initial construction, 400 Atlantic has undergone an uncompromising modernization, resulting in the transformation from light industrial to Class-I office. It offers 10,000 SF floor plates with ensuite elevators. The redevelopment is aiming for LEED Gold Certification, reinforcing Allied’s environmental commitments while supporting those of our users.
The building now offers one of the best loft-style office space opportunity in Montreal and the possibility of a 3,000 SF private terrace on the penthouse level.
Area Size
Floor 1 (Full floor) ± 9,881 SF
Floor 2 (Full floor) ± 9,881 SF
Floor 3 (Full floor) ± 9,881 SF
Floor 4 (Full floor) ± 9,881 SF
>> GF + Floors 1-2-3 & 4 ± 39,524 SF contiguous
Floor 6 (Full floor) ± 9,881 SF (Plug & Play space -Q3 2022)
Floor 7 - Suite 700 ± 1,433 SF
Floor 7 - Suite 704 ± 1,356 SF
Floor 7 - Suite 705 ± 1,761 SF
>> Suites 704 + 705 ± 3,117 SF contiguous
Floor 9 (Full floor) ± 5,884 SF
Floor 10 (Full floor) ± 4,201 SF
>> Floors 9 & 10 ± 10,085 SF contiguous