The property was added to the New South Wales State Heritage Register on 2 April 1999 where it is also known as the Tahmoor Railway Station Group and Lupton's Inn.

Not to be thwarted, Sam purchased hundreds of acres of land near where it was proposed to build a new railway platform along the Bargo road (and) subdivided the land into some 600 building blocks which now forms the nucleus of the township of Tahmoor...The deviation works brought hundreds of men and their families to the area creating an urgent need for postal facilities and shops.

Sam Emmett was again ahead of the rest, applying for the re establishment of a post office which he proposed to be in premises attached to a shop which he was in the process of building...

The application for a post office was approved, however the identity of the location was still in question... Sam's preference of 'Bronzewing Park'...The Railway Department advised that the new platform would be called "Tahmoor", Aboriginal[dubious – discuss] for bronzewing pigeon...

The smaller A1 – A4 structures were wayside buildings predominantly constructed of timber weatherboard in country locations with a gabled roof and continuous awning.

[4] A small single room weatherboard building with skillion roof sloping towards platform clad in corrugated iron with simple timber supports for a short extended awning.

The site is significant for its ability to demonstrate the impact of the railways on shaping inland settlements following the deviation of the Great Southern line from Picton to Mittagong in 1919.

[4] Tahmoor railway station was listed on the New South Wales State Heritage Register on 2 April 1999 having satisfied the following criteria.

The site is significant for its ability to demonstrate the impact of the railways on shaping inland settlements following the deviation of the Great Southern line from Picton to Mittagong in 1919.

[4] The place is important in demonstrating aesthetic characteristics and/or a high degree of creative or technical achievement in New South Wales.

[4] The place possesses uncommon, rare or endangered aspects of the cultural or natural history of New South Wales.