Denzien Contracts has taken 1,561 sq ft at Yorkshire House in Chapel Street, Liverpool city centre.
The company has been appointed contractor on Sanguine Hospitality's £15m Hotel Indigo, which is situated between Yorkshire House and 1 Old Hall Street, home of Liverpool Chamber of Commerce.
Yorkshire House, built in 1926, was originally the headquarters of the Yorkshire Building Society and had been unoccupied for some years until it was acquired in 2006 by Chapel Street LLP.
The partnership, comprising of Arrowcroft, Faircroft and Ethel Austin Properties, refurbished the property and created 24,411 sq ft of office space.
In addition, existing tenant JAK Taverns, which occupies 1,760 sq ft in the building, has agreed to take a further 603 sq ft of space.
Andrew Owen, head of business space at Mason Owen, which are joint letting agents with CB Richard Ellis on the building, said: "These two new lettings only serve to justify the landlord's investment in providing high quality office space suitable for the modern office occupier within an attractive period building.
"It is this attention to detail combined with modern features such as comfort cooling that has attracted occupiers such as Parkin S Booth, Turner & Townsend, Stellar Group and Hitech Exports to the building.
"This is a superb building in an excellent location and we are delighted to have reached the milestone of being 70% occupied.
"Yorkshire House can accommodate a variety of size requirements from circa 1,000 sq ft up to 3,332 sq ft and we are confident in attracting further occupiers to the development who appreciate top quality city centre accommodation."
The cost of the rental agreements were not disclosed.