The deal sees 19 jobs saved at the Ilkeston based specialist which went into administration on July 25.
The business was sold by accountant Smith Cooper to the newly formed Aaron Contracting Ltd this week.
Aaron Plant Services managing director Alan Smith is part of the management team of the new company.
He said: “I am pleased that the acquisition of the business and assets has completed so quickly – ensuring the future of the Aaron Plant business and 19 of its employees.”
Dean Nelson of Smith Cooper added: “The sale to Aaron Contracting ensures the sale of the business and assets and protects the livelihoods of a majority of the employees.
“At a time when the Midland’s construction industry has suffered continuous blows, it is good news that the business has been saved and jobs protected.”
Aaron has carried out major contracts for Bowmer & Kirkland, Morgan Sindall, Bam Nutall and Derby City and Mansfield councils.