Wright Stephenson continued to own the building even after they shifted their offices to Queen St, where MasterMall is today. The building was let to the Government, which ran part of the Social Security Department out of it.
Mr Winter said it was later occupied by lawyers and accountants, and a variety of other businesses including a cleaning company and a hairdressers.
He said the style of building was called "Moderne", and represented a transition towards art deco, which followed soon after.
In his book Wairarapa Buildings, David Kernohan said it was "of an interesting transitional style", and the use of a parapet above the entryway was an effective way to hide the low-pitched roof.
The 90-year-old building is owned by Chapel Street Investments, which runs under an Auckland based director.