The updated provisions total is detailed in Sureserve’s latest interim results.
The former Lakehouse owners rebranded as Surserve after selling the contracting division for £500,000 last summer.
Lakehouse went into administration in March owing subcontractors more than £9m.
Sureserve accounts show it has utilised £2.3m in provisions during the six months to March 31 2019 and now holds £5.4m.
Surserve made a group pre-tax profit of £1.1m compared to a loss of £500,000 in the same period last year.
Chairman Bob Holt said: “These results demonstrate a turnaround in the Group’s fortunes following a difficult period and the divestment of the construction and property services business groups.
“The Board believe that all legacy matters have now been provided for.”