According to some online references to early newspapers in the Franklin area, this appears to date from 1930. The Pukekohe Volunteer Fire Brigade itself celebrated their 75th anniversary in 1986, so began in 1911. This must have been a great step up in facilities for them in the 1930s. Come the early 1980s, however, as has happened with so many fire services in the region, the old stations prove inadequate and are either demolished for new buildings on the same site or vacated. This one is the latter case. It apparently has been a restaurant recently.
I don't know what is expected to happen to the building in the future. I was just visiting Pukekohe for the day yesterday while attending a regional gathering for members of the NZ Federation of Historical Societies. When I can, I'll contact Franklin Historical Society (it's virtually right outside their rooms in the heart of Pukekohe) to see how things go.