Planners have approved an extension as part of wider proposals to revamp a shopping centre.
Developer Rockspring lodged an application last year to create an extension linking Union Street with Aberdeen Indoor Market.
Planners said the extension could make the site more attractive to retail occupiers.
The plans are the latest in a series of applications submitted by the firm to revamp the Aberdeen Indoor Market and former BHS building as a modern retail space.
In their report, planners approved the extension subject to conditions.
They said there would be “slight tension” with council policy due to the loss of original building fabric within the Union Street conservation area, but added the extension has otherwise been “suitably designed” and the wider character of the conservation area would be preserved.
It said: “The extension would potentially allow a retail unit on Union Street to be more attractive to current or future occupiers.”
It would link the buildings on 81 to 85 Union Street on to the East Green/ Aberdeen Market building. Planners said no work should take place unless a scheme detailing how the reuse of the granite block work removed from the building has been approved by the local authority.
An earlier design statement for the wider proposals said the redevelopment would see an “under-utilised, unloved building” revitalised into a “vibrant retail space”.
Under the plans, new shopfronts will be introduced on The Green and Market Street with the intention of providing better pedestrian access.
Rockspring has also submitted plans to re-configure buildings at 101-103 Union Street to allow for retail uses, a residential development and a cafe.
The proposals indicate the development could include bar and restaurant uses as well as retail.
A spokeswoman for Rockspring said: “We’re very pleased that Aberdeen City Council has granted planning approval for this prominent city centre site.
“We are now exploring all the options open to us and are in ongoing dialogue with Aberdeen City Council with a view to creating a sustainable development that we can all be proud of.”