A £1.5million extension of Buchan House in Peterhead will begin on September 2.
The building, which is currently used by Aberdeenshire Council, will be given a two-storey addition to provide space for police to work at the same premises.
One of the ideas behind the project and the shared office space between council and police colleagues is to encourage greater cooperation between the two bodies.
A construction team will be preparing the St Peter Street property this week, in advance of the project starting next Monday.
It is hoped the extension, funded by the council, will be completed by the end of April next year.
Councillor Norman Smith, chairman of Aberdeenshire Council’s Buchan Area Committee, said: “I’m very much looking forward to work beginning on the site.
“There is already a great deal of work under way to prepare for our new colleagues joining us and I’m sure that seeing construction begin will really help underline that.
“This project will offer many opportunities for Peterhead, both in terms of increased access to services for the public, but also in the closer working opportunities it will provide for Aberdeenshire Council, Police Scotland and our partners.”
Officers are already present at the Buchan House Service Point and there will be space for more employees and services once the construction is complete.
Police Scotland will be leasing their space from the council. The lower floor will be used by officers and staff, and the upper floor will house shared facilities.
Chief Superintendent Campbell Thomson said: “Along with our partners, Police Scotland’s North East Division is committed to developing opportunities for collaborative working to enhance the service we provide to the public.
“The creation of Buchan House will build on the strong working relationship we already have with Aberdeenshire Council and strengthens what we can deliver together for the benefit of everyone in the local community.”
Permanent car parking will also be created on land currently used as overspill.
Robertson Construction has been appointed on a design and build basis.
Gordon Milne, managing director for Robertson Eastern, said: “It’s always a significant occasion for our team when we start work on a project.
“However, Buchan House feels particularly special because we were fortunate enough – working in collaboration with Aberdeenshire Council – to manage the development phase.
“We are incredibly proud of our close working relationship with the local authority and look forward to getting our sleeves rolled up, and delivering a bespoke place of work designed to cater to the needs of both Aberdeenshire Council and Police Scotland.”
The facility will remain operational during the majority of the works.