Merseyside Estates has completed the £3m refurbishment of the Cheshire Lines office building in Birkenhead with the support of European grant funding and let 30,000 sq ft to MD Insurance.
The former Victorian railway shed was empty for the past decade and was previously occupied by offices for Littlewoods Pools.
Sean Seery, partner at Smith & Sons, who managed the project, said: "This has been a lengthy journey that has involved long periods of consultation with several partners and agencies that have supported us in ultimately achieving the necessary European grant funding.
"To see Shorelines brought back to life in a way that not only enhances its period features but brings the building right up to date in terms of energy performance is incredible."
The project was designed by Brock Carmichael Architects.