Canterbury City Council could abandon its headquarters and allow the site to be redeveloped for housing.
The authority admits that the Military Road building and car park no longer meets its needs and is too much underused.
A move away from the offices which have served the council since the 1970s could happen within five years.
Meanwhile, the council would be able to allocate the land to for development as housing as its strives to meet a target of at least 800 new homes per year until 2031.
A report outlining the proposals will go before the council’s policy and resources committee next week.
Written by deputy chief executive Tricia Marshall, it states that around 45% of the Military Road building is not used due to “poor design” with long corridors and empty spaces such as courtyards.
The report goes on: “The current council office building is no longer fit for purpose due to the increasing high operational and maintenance costs such as poor insulation, a
failing heating system, replacement of windows will be required.
“A new building would be fit for purpose, modern and energy efficient with lower
“By reducing the office space, land can be released for new housing, helping to achieve our housing targets and provide affordable housing for residents”
The report adds that money saved from running costs for the building could be used for frontline services.
It estimates that the process to find a new location and build new offices could be complete by late 2022 or earl 2023.
Ms Marshall’s report will be discussed by the policy and resources committee at its meeting in the Guildhall at 7pm on Wednesday, November 14. The meeting is open to the public.