Campaigners are set to take to the streets after plans for Durham County Council's new £50m headquarters were recommended for approval.
The local authority wants to move from its current site on Aykley Heads to a new building at The Sands car park in Durham city centre.
But the proposals have been vehemently opposed and the council has received almost 1,000 letters of objection.
They range from traffic concerns to the negative impact the development could have on the city's World Heritage site status.
Councillors on the local authority's planning committee are being asked to approve the application on Tuesday, though it could be referred to the Secretary of State.
In a report to councillors, outlining public benefits for the development, planning bosses say: "Firstly some of the heritage harm is countered by the positive impacts of the HQ building itself, which would result overall in a positive contribution in design terms to this particular corner of the city."
It says that although traffic and air quality is a significant part of the objections, there are potential benefits to reduce traffic at some junctions and routes.
Planners also state bringing office space with "significant employment" into the city centre will bring economic benefits, such as footfall and expenditure in the city.
If given the go-ahead, the plans that have been lodged by Kier Property Development would include a council chamber, cafe and new civic square and car park .
The current building at Aykley Heads will be demolished and developed as a centre for high-tech and high-paying jobs.
On Saturday, protesters will be holding a demonstration at Durham City Market Place from 11am.
Kathryn Banks, who has helped organise the protest, said: "We want them to recognise people the huge concerns people have around it.
"They [the council] just keep saying they are going to make a great business park.
"What we want is the council to take a little bit more time to get this decision right."
