Mace has won the role of project manager for the revamp of the Alexander Stadium in Birmingham ahead of the Commonwealth Games in 2022.
Birmingham City Council confirmed the decision that Mace will lead the £70m project, which will see the council-owned venue, already an international-standard athletics venue, modernised and its capacity temporarily increased to 40,000 for the Games.
Three of the stadium’s four stands will be demolished and rebuilt as part of the work, while the back straight stand, built in 2012 with a capacity of 5,000, will be retained.
The home of the Birchfield Harriers Athletics Club, which hosts events such as the Diamond League Series and British Championships, will then be left with a permanent post-Games capacity of 20,000, up from its current capacity of 12,700, making it the UK’s largest permanent athletics stadium outside London.
Ian Ward, leader of Birmingham City Council, said: "For many years the Alexander Stadium has provided a stage for the best athletes from across the UK and wider world.
"Thanks to the redevelopment that is being enabled by the Birmingham 2022 Games, we will have a venue that will offer a modern and welcoming environment for the finest Commonwealth talent.
"And in legacy mode, provide the UK with its biggest and best athletics facility for future generations to use as part of a wider and enhanced community sport offer for Perry Barr and surrounding areas of the city."
All athletics and para-athletics disciplines for Birmingham 2022, with the exception of the marathon, which will take place in Birmingham's city centre, will take place in the Alexander Stadium.
The Stadium will also host the opening and closing ceremonies.