Property consultancy Colliers International has been retained as joint marketing agent for the mixed-use Fort Dunlop complex in north Birmingham.
The 375,000 sq ft building was acquired in July by a fund advised by Tristan Capital Partners from Urban Splash, the Manchester-based property group which brought the former tyre factory back to life.
Colliers International will work alongside joint marketing agent GVA after first being instructed by Urban Splash to market the Castle Bromwich scheme earlier this year.
Fort Dunlop was built in 1920 and was the main building of the former Dunlop Rubber factory area.
Its principal use was for the storage of tyres but it was derelict for two decades after Dunlop ceased working from the site in the 1980s.
Among its tenants are the Birmingham Post, Travelodge, Capita and several ground floor retailers.
Matt Long, director of national offices with Colliers International, said: "Fort Dunlop's strategic location and wide range of grade A office space are just some of the factors that make this building one of Birmingham's regeneration success stories.
"This historic building was dramatically brought into the 21st century by its previous owner and has remained more than 95 per cent occupied ever since."