While Calgary's commercial office market saw its vacancy rate on the rise in 2013, a new report shows the city will remain one of the most important players in Canada this year.

Dubbed "the nation's largest development market" in Avison Young's 2014 Commercial Forecast, Calgary is expected to see vacancy rates escalate in 2014 thanks in part to developers bringing new supply to the downtown core.

Space in Calgary's once constricted downtown office market could soon be a little easier to come by.

While ranked as the tightest market in Canada in a report from Avison Young, the vacancy rate in the downtown core could escalate alongside new developments set to enter the market.

In its spring and summer newsletter, Avison Young said Calgary's commercial real estate sector remains resilient despite "growing concerns" about Alberta's future economy.

With the energy sector remaining cautious about weakening oil prices and the uncertainty surrounding the Keystone XL and Northern pipelines, as well as Alberta recording a sixth consecutive deficit this year, the newsletter says economic growth remains "decidedly positive".