PIONEER House will be taken from its current owners and bought by Kirklees Council.
Robert Stayton has lost an appeal against a compulsory purchase order, which means he must sell the iconic building.
But the council, which has £3.5m to spend on the building, will not say what its plans are. It said that strict rules were in place in the run up to local elections, which meant it could not make major announcements.
A public inquiry was held in November to decide whether the council could force Stayton to sell up.
A report issued late last week criticised the Stayton Group of companies for the lack of progress made since it bought the building in 2005.
It said that Grade II listed Pioneer House would be better preserved in the hands of the council.
Ken Gillespie, the council’s regeneration director, said: “I am pleased with this decision as it allows us to move forward with our plans for Dewsbury.”
A spokesman for the Stayton Group said: “Stayton are bitterly disappointed at the decision.”
See a copy of this week’s Dewsbury Reporter for the full story and history of Stayton’s involvement in Pioneer House.