The popular pub chain was granted planning permission by City of Wolverhampton Council in March 2020 to redevelop the Lichfield Street venue and add an extra floor to the building.
It has now submitted a revised planning application that would see the company establish a heritage centre in the basement as well as convert the first, second and third floors into a 72-bedroom hotel, without the need for an additional level.
The proposal would also see external and internal alterations including the creation of a refurbished and enlarged public house on the ground floor, an external first floor rear garden terrace and new shopfront.
Wetherspoon spokesman, Eddie Gershon, said: “Wetherspoon aims to develop a hotel and heritage centre on the site as well as carry out work to the pub itself.
“The company aims to invest £15million to create a large extension to the existing pub, build a 72-bedroom hotel, heritage centre and create a new beer garden.
“Approximately 70 new jobs will be created.
“The Moon Under Water in Wolverhampton has proven very popular over the years and the project highlights our commitment to making the pub even better and to Wolverhampton itself.”
The 40,000 sq ft space above the pub, with its Art Deco frontage, has been empty for more than 33 years after being home to the old Co-op store.
The building sits opposite the Grand Theatre and is set to benefit from a comprehensive redevelopment of Lichfield Street as part of City of Wolverhampton Council’s city centre transformation works.
Councillor Stephen Simkins, City of Wolverhampton Council Deputy Leader and Cabinet Member for Inclusive City Economy, said: “This is an exciting proposition and demonstrates the growing confidence in our city centre from the private sector.
“The council’s city centre transformation works are creating better public spaces that will attract more visitors and enable businesses to thrive and grow through a blended approach of retail supported by events and activities in quality public spaces and city centre living.
“The works on Victoria Street and North Street are demonstrating this, especially since the reopening of The Halls Wolverhampton - and we welcome this latest planning application from one of the biggest chains in the hospitality sector.”