MK Dons have confirmed the second phase of their Stadium MK development will be completed by the start of next season.
The work, which will increase the ground's capacity from 22,000 to 32,000, is being funded by a new £56m retail development on the site.
Stadium MK has remained a work in progress since it was opened in 2007.
"It's something we've worked so hard for over the last few years," Dons chairman Pete Winkelman told BBC Three Counties Radio.
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"Being able to secure these kinds of deals in this kind of economic climate is a great green light for growth in Milton Keynes."
The League One side have attracted an average attendance of 8,111 this season, with their highest crowd of 10,554 - against Scunthorpe in October - over 21,000 seats short of the ground's proposed capacity.
But the stadium has showed its potential to attract larger crowds through other events.
Rugby union team Northampton Saints have played Heineken Cup games in front of crowds of 21,309 and 18,231 against Ulster and Perpignan respectively.
The ground hosted its first game in July 2007 - a friendly between MK Dons and Chelsea XI
It was officially opened by the Queen four months later
In the same month the stadium attracted a crowd of over 20,000 for an England U21s Euro qualifier
In May 2008 Saracens played the first rugby union match at the ground, beating Bristol 25-20
Northampton Saints attracted a record attendance of 21,309 against Ulster last season
The ground was included in England's failed bid to host the 2018 World Cup
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