Proposals to move from New County Hall on New Road to a refurbished Speedwell House in Oxford are to be considered by the authority’s cabinet later in the year.
The council said the move, which would happen in two to three years’ time, was considered after “extensive and independent evaluation” and consideration by the cross-party cabinet advisory group on city centre accommodation.
Meanwhile the sale or lease of New County Hall would potentially generate significant income, some of which would be invested in the refurbishment of Speedwell House, which is already owned by Oxfordshire County Council.
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The old part of County Hall, which is Grade-II listed , was built in the 1840s and contains the council’s debating chamber and the coroners court.
The modern, brutalist extension, known as New County Hall, was added in the 1970s.
The new Speedwell Street offices would be carbon-neutral.
Councillor Liz Leffman, leader of Oxfordshire County Council, said: “We are still finalising a lot of detail and these plans will evolve and develop over the next two to three years before we make this move.
“A final decision will need to be taken by our cabinet in due course.
“We do, however, want people to understand the direction that we are heading in.
“The move would present value for money for the taxpayer as well as keeping to our principle of putting climate change at the heart of everything we do.
“This is in line with our overall property strategy and the best way to utilise our offices overall, rationalising where necessary.”