The joint venture between Colliers and Sheffield City Council could see the redevelopment of the former Sheffield Ski Hill at Parkwood Springs on the edge of the city, now a derelict dry ski slope, if backers can be found.
Gillespies has put forward a design using the steep slopes for adventure sports, including mountain bike trails and a dual slalom in a bid to turn the site into a major visitor attraction, which could draw in more than 10,000 visitors a year.
Associate Tim Buykx said: "Sheffield is a city renowned for its active lifestyle and outdoor adventure sports – climbing, running, biking and hiking. The Parkwood Springs development provides a great opportunity to capture people’s enthusiasm for adventure sports and deliver a downhill adrenaline sports destination close to the city centre.
"The design concept envisions a range of downhill sports forming the heart of a recreation training and competition facility, which will provide the north of England with an unrivalled city-based adventure sports park."
The project is part of Sheffield City Council’s long-term plans to make Sheffield The Outdoor City - the UK’s leading destination for people seeking outdoor adventure, city culture and rural escapes.
If the project goes ahead it could lead to a tourism boost for the city and galvanise the regeneration of the wider area.
The council’s deputy leader councillor Leigh Bramall said when the project was launched in December: "This is a significant step forward for the former ski village site, which closed in 2012 after 24 years being privately operated.
"We now have control of the site and have real confidence that Parkwood can be the jewel in the crown of The Outdoor City. But we need to check that the right investor and developer exists to do this, as it’s not within the council’s means.
"Sheffield has higher than average participation rates across various outdoor activities and an annual £93m spend on outdoor trips and equipment. Equally, there are not many sites, in the middle of a city like this.
"This shows we’re offering somebody the perfect opportunity to create a world-leading urban, outdoor attraction which embodies Sheffield’s standing as The Outdoor City."
Sheffield City Council is currently seeking investors for the project.