Local people expressed interest in the conservation of the structure, and in 1916 the land was reserved under the Scenery Preservation Act 1908.
 This was one of the first instances of a historic building being accorded legal protection in New Zealand.
In 1927-28 the building was significantly repaired and windows were added on the inner side of the L-shaped wall.
A Committee to Restore the Blockhouse was formed during the 1950s and the building was restored about 1954.
From 1953 to the late 1990s Boy Scouts and Girl Guides used the building.
A service club also used the building as a meeting venue.

In 1980 the blockhouse and the neighbouring land was classified as an historic reserve under the Reserves Act 1977.
Soon after that, the New Zealand Historic Places Trust took over management of the building.

The building was further modified around 1989.
Local people expressed interest in the conservation of the structure, and in 1916 the land was reserved under the Scenery Preservation Act 1908.  This was one of the first instances of a historic building being accorded legal protection in New Zealand. In 1927-28 the building was significantly repaired and windows were added on the inner side of the L-shaped wall. A Committee to Restore the Blockhouse was formed during the 1950s and the building was restored about 1954. From 1953 to the late 1990s Boy Scouts and Girl Guides used the building. A service club also used the building as a meeting venue.
In 1980 the blockhouse and the neighbouring land was classified as an historic reserve under the Reserves Act 1977. Soon after that, the New Zealand Historic Places Trust took over management of the building.
The building was further modified around 1989.
Upper Hutt Blockhouse