Enabling works on the multi million pound refurbishment of the Grade II listed venue were completed earlier this year.
The doors to the Civic Halls temporarily reopened in October for a host of big name events, which wrap up with Roy Chubby Brown on Friday.
A contractor will be named in the New Year for the main works to start in January.
Councillor John Reynolds, City of Wolverhampton Council Cabinet Member for City Economy, said: "The Civic Halls have been around since 1938 and are an important part of our visitor economy - providing jobs and generating millions of pounds every year by staging nationally acclaimed shows.
"As part of our regeneration plans for the city we recognised this Grade II listed building is in need of refurbishment, as well as improvement to ensure it remains a thriving venue to be proud of.
"The increased capacity of the Civic Halls will make them a more attractive place in the entertainment market, enabling it to attract significantly more popular and prestigious acts, while retaining the current characteristics that make it popular with performers, producers and audiences.
"The importance of its contribution to the visitor economy was highlighted by Wolverhampton this year making the top 10 in a major survey of the best live music scenes in the UK."
The full refurbishment will see a new Civic Hall balcony at the rear of the hall, with the added benefit of an improved view of the stage for more customers.
A new glass covered bar area will also be installed above the main entrance of the Civic Hall, servicing the new upper level.
The Wulfrun Hall will also get a balcony, while the capacity in both halls will increase and hospitality areas will be improved.
The project will safeguard 637 jobs in the wider economy and it is anticipated to attract an additional 330,000 visitors a year, resulting in a further 120 direct and indirect jobs.
- released: Wednesday 21 December, 2016