Social housing firm Connaught, which employs 10,000 people, has gone into administration after failing to raise extra funding from lenders.
The FTSE 250-listed company announced it was in the process of appointing KPMG as administrators after it earlier suspended trading of its shares.
Connaught said talks with lenders and investors on additional financial support had "failed to reach a satisfactory conclusion".
In a statement the firm continued: "Following extensive discussions with the group's secured lenders, it is now clear that sufficient support would not be extended to the group as a whole to enable it to continue trading as a going concern.
"As a consequence, the board is saddened to announce that it is in the process of appointing partners from KPMG as administrators of Connaught plc and its subsidiary, Connaught Partnerships Limited, which comprises its Social Housing Division."
The company's other main subsidiaries, Connaught Compliance, National Britannia Holdings, Fountains and Connaught Environmental, are not being placed into administration.
Coming from the North East of England, I feel a great empathy with people who find themselves the casualties of industrial strife.
The Exeter-based repair and maintenance specialist has been in turmoil since it warned in June that Government spending cuts could blow a £200m hole in revenues.
The firm has around 180 multimillion-pound social housing contracts in the UK.
Royal Bank of Scotland recently provided Connaught with a further £15m in an attempt to keep the group going, it has been reported.
Sir Roy Gardner, who recently became chairman of the company, had also attempted to put together a rescue plan with the help of several new directors.
Until their suspension, the company's shares had fallen by more than 90%.
The fall came after the warning in June that it had identified 31 projects where spending will be delayed as a result of austerity measures.
Founder Mark Tincknell left the company earlier this year on health grounds