Kemp House - New Zealand's oldest building. Built by Maori sawyers and missionary carpenters from the London-based Church Missionary Society in 1820-21, Kemp House predates the signing of the Treaty of Waitangi by almost 20 years. Enjoy a tour of New Zealand's oldest building including a large range of furniture and personal items owned by the missionary families who lived here - including James and Charlotte Kemp. Nestled in the shadow of Hongi Hika's Kororipo Pa, Kemp House is the sole survivor of the Musket Wars of the 1820s - and a place of fascinating stories brought to life by our knowledgeable Historic Places Trust Guides.