Three buildings in the township remain from the time of its founding. In addition, there is the historic gatehouse some northwest of Barrhill. Those buildings remain partly because they were built in concrete, with some of the walls thick. The cement was landed in barrels on
Kaitorete Spit, barged across
Lake Ellesmere / Te Waihora, and then transported by
dray overland and along the bed of the Rakaia River. St John's Church was mostly paid for by Wason, and construction started in 1876, with the first service held on 8 July 1877 by the vicar of
Ashburton, W. E. Paige. A vicarage was also envisaged, but it was never built. A
lych gate was added as a centennial project. The church was registered as a heritage building by the New Zealand Historic Places Trust (since renamed to
Heritage New Zealand) on 23 June 1983 with registration number 1765 classified as C. With the change of the classification system, the building later became a Category II listing. The church is owned by Church Property Trustees (i.e. the Anglican Church). After the land had been surveyed, the first buyer was the Education Board, securing land for a school in the market square, and a teacher's house on the adjacent
section. Both these buildings were also built in concrete and exist to this day. Since the school closed in 1938 it has been used for functions and as a hall. The former teacher's house is used as a
bach. The other remaining 1870s concrete building is the gate house, located some distance away on the Rakaia Barrhill Methven Road. Wason's homestead was at the end of a drive starting at this gate house, on a cliff top overlooking the Rakaia River. The homestead burnt down not long after Wason had left the country, and a new homestead was built nearby. The gatekeeper's lodge originally had a slate roof, but this was later replaced by iron. The last family moved out in 1935. During the second world war, the iron was stripped off the empty building, and it fell into ruin. A later owner,
Colin McLachlan, donated the land and the ruin to the people of the district; it is now vested in the Ashburton District Council. The renovation began in 1970, with work carried out and financed by descendants of previous inhabitants of the building. File:Barrhill St John's Anglican Church.jpg|St John's Church File:Barrhill 028.JPG|Former school; now community hall File:Teacher's house 001.JPG|Former teacher's house File:Barrhill 083.JPG|Corwar Gatekeepers Lodge File:Barrhill 088.JPG|Barrhill Cemetery, with the trees of the village in the background ==Notable people==