Osborne chief executive David Fison is set to retire from the firm next month, with construction division managing director Andy Steele stepping up to the top job.
Mr Fison became chief executive at the family-owned firm six years ago, having held the same position at Skanska between 2002 and 2008.
His retirement will also see him stand down from the board of parent company Geoffrey Osborne.
Osborne chairman Andrew Osborne said: “It has been a great pleasure to have worked with David – his integrity, openness, and passion for the business has been an inspiration.
“On behalf of the board and the Osborne team, I would like to thank him for his leadership; he is leaving a much stronger and more vibrant business for us to take forward.”
Mr Fison said: “It has been an absolute privilege to have been chief executive of Osborne.
“Getting through the recession was tough. The great thing, though, is that the company has come through it with a refreshed and stronger commitment to customer service that is delivered by all of our people.”
Mr Steele will take over as chief executive next month, at the end of the financial year, handing his current role to John Craig, the current director of education for Osborne Construction.
Commenting on Mr Steele’s appointment, Mr Osborne added: “Andy started his career with Osborne, and having worked in a number of senior leadership positions, both within our industry and in other sectors, rejoined the company in 2013.
“Andy’s focus on putting the customer at the heart of our business is at the core of our strategy for the next phase of Osborne’s development,” Mr Osborne said.