Skipton International is expanding its operations at Tudor House to accommodate its growing team.
The Guernsey bank will be taking over another floor for its business, increasing its office space by 75%.
The bank has continued to grow across the Channel Islands over the last three years, moving into the ground floor of Tudor House in 2016 and opening a new Mortgage Centre in Jersey last year.
The Skipton offices in Guernsey will soon be on floor three of Tudor House, with its reception area, Customer Services and Banking teams remaining on the ground floor.
The team has grown by a fifth in two years, with over 50 Guernsey team members expected to be working for the bank by the end of the year.
Jim Coupe, Managing Director, said: “Expanding our office space will allow Skipton to grow and better meet the needs of our increasing customer base. Taking on another floor demonstrates our long-term commitment to Guernsey, to supporting more customers across the Channel Islands and to continuous improvements to our services.”