Coventry fabricator Midland Steel Structures has been placed into administration with the loss of 45 jobs.
Administrators Andrew Turpin and Matthew Hardy of Poppleton & Appleby are in negotiations with clients about finishing existing contracts.
The firm, founded in 1979, employed around 60 staff, and 15 have been retained with the hope of completing contracts.
Mr Turpin said: “The company appears to have suffered a severe drop in orders due to the downturn in the property market and public sector cuts, which have hit expected building programmes.
“We are currently working with the management to fully assess the company’s situation and to decide what steps to take.”
The company has worked on projects including Coventry University Hospital, Belgrade Plaza, Bath University Institute of Sport and Cambridge Science Park.