The Ministry of Social Development's new purpose built property on St Hill St is on the market just a year after staff moved in.
The single-storey property will go under the hammer on June 28.
About 120 staff moved into the premises in February last year bringing all of MSD's services under one roof, including Work and Income, Child Youth and Family, and Senior Services.
MSD will have a long term lease on the building and it was purpose built for the ministry.
"The brand new, low maintenance building with onsite carparking at the rear of the address is the epitome of prime investment-grade stock," the agent said.
"It is the most modern building of its type in Wanganui."
The property features a 2074m office building that sits on 3872sq m of land and has 39 carparks.
"It ticks all the boxes of being a quality build, with a good tenant in place on a long lease," the agent said.