Seismic assessments of the 43-year-old building -- that was to have been a temporary structure -- resulted in the decision to demolish, rather than upgrade the building, the Vancouver Sun reported Tuesday.
Four hundred city staff in the city hall building's east wing will be relocated by 2014, the Sun reported.
There is no emergency, said Bill Aujla, Vancouver's general manager of real estate and facilities management.
"It's something you want to look at and certainly plan in advance. Obviously, we live in an earthquake zone and we want to be proactive about this, but there isn't enough money to do every building at once, so you take a stepped, incremental approach," he said.
The city council's and financing approval will be necessary to move forward with the demolition, the Sun reported.
Aujla declined to estimate the cost of the demolition in order not to pre-empt the price of next year's bids.
The affected employees will be moved into another city-owned building.