The answer depends on whether you inquire about an intact building, or the ruins of one.
The oldest stone building remains I know of are the walls of a sealers camp on the Open Bay Islands, near Haast, and there were erected by a sealing gang in 1810 when they were left there by the ship Active. The vessel was never heard from again, and it was three years later that the sealers were able to attract the attention of a passing ship.
In the North Island, there is Kemp House, erected about 1821, and still maintained as an historic building.
The oldest stone building in west African can be found at Tichitt Walata from 2000 BCE
Stone store in Keri Keri 1832
Kerikeri
i don't know that's why im asking you
the Westshire inn which was where king tut was born
Great Pyramid of Giza which was commissioned by Khufu.
KipKerikeri
The oldest public building in Washington, D.C. is the, Old Stone House. The house was built in 1765 and open to public since 1960.
The oldest stone building is believed to be Göbekli Tepe in Turkey, dating back to around 9600 BCE. This ancient structure is considered one of the world's first temples and predates Stonehenge by several thousand years.
The Kerikeri Mission Station is home to New Zealand's oldest standing European buildings: the Stone Store and Kerikeri Mission House (Kemp House).
New Zealand's oldest stone building is known as the Kerikeri Mission House. It is located in Kerikeri, Northland, New Zealand. See the related link below for more information.
The Old Stone House, located at 3051 M Street in Georgetown, was built in 1765. It is the oldest standing house in Washington, DC.