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Old Port emerges as overflow option for increasingly tight downtown Montreal office sector

Availability of large blocks of contiguous space may provide solution for certain occupiers
Place Gare Viger at 700 rue Saint-Hubert is one of several Old Port office buildings that currently have large blocks of space, 10,000 square feet or greater, available. The lack of space in newer class A offices across the rest of downtown Montreal may prompt some occupiers to seek out office space options in the Old Port. (Olivier Gariépy/CoStar)
Place Gare Viger at 700 rue Saint-Hubert is one of several Old Port office buildings that currently have large blocks of space, 10,000 square feet or greater, available. The lack of space in newer class A offices across the rest of downtown Montreal may prompt some occupiers to seek out office space options in the Old Port. (Olivier Gariépy/CoStar)
CoStar Analytics
June 4, 2026 | 2:24 P.M.

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Downtown Montreal’s office market is showing signs of stabilization, with the vacancy rate trending lower since early 2025. This is especially true in the Downtown South submarket, where several large tenants have taken occupancy, helping push vacancy from over 14% a year ago to around 11% today.

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