A Medway theatre is one of three local creative sector projects due to share £14.4m in Levelling Up funding.
The first tranche of grants from the Government scheme was released as part of Wednesday's Budget.
Medway Council says The Brook Theatre will be "comprehensively repaired, refurbished and upgraded". More than 400sqm of creative workspace will be added.
Creative workspaces are also a feature of the other two levelling up projects.
The Docking Station, a former police section house, will be redeveloped to house the Institute of Cultural and Creative Industries. Artists, graduates and staff at the University of Kent will have access to studios, performance spaces and an interactive digital gallery.
The Fitted Rigging House will be brought "back into effective use" with 1,939sqm of creative-focussed commercial floorspace.