Barlcay Street Real Estate recently forecast that new developments could push downtown office vacancy rates up to 24 per cent in 2018, and office vacancy rates in the adjacent Beltline neighbourhood could climb to 19.6 per cent over the same period. The vacancy issue has driven down prices for tenants — “There’s never been a better time to look at space than right now,” Barclay Street associate Bill Falagaris said — but has forced developers to reconsider projects that are planned, and completion dates for office buildings that are already under construction.