The firms, Heritage Building & Conservation and Heritage Building & Conservation (North), were launched two years ago. They took on staff following the collapse of York-based conservation specialist William Anelay.
They have been placed into administration on Companies House and TheBusinessDesk.com understand around 55 jobs are at risk.
William Anelay had traded since 1747 but collapsed after its owners failed to rescue the business by securing a deal with creditors.
A separate company, Heritage Building & Conservation (South), is not in administration.
Heritage Building & Conservation (North) was a subsidiary of HB&C Investments, Waltham Cross, and worked alongside a sister business, Heritage Building and Conservation Ltd, which had offices in Huntingdon and Litchfield, to support heritage building and restoration projects across the UK.
HB&C Investments, owned by South African businessman Gordon Verhoef, also owns two former York-based companies, Hare and Ransome Joinery and Lowery Roofing, which were previously part of the William Anelay group and completed scores of high-profile historic and listed buildings schemes.
The administrator has been approached for comment.