The area contains two parks, One Tree Hill Domain and Cornwall Park, which are next to each other and thus often perceived as one. One Tree Hill Domain is open to the public and was formerly administered by Auckland City Council but since 2012 has been owned and administered by Ngā Mana Whenua o Tāmaki Makaurau Collective. All decisions are made by the owners, who have delegated minor day-to-day operations to Cornwall Park Trust. Cornwall Park is a private park, also open to the public, administered by the Cornwall Park Trust Board. The Trust's endowment includes income from leasehold properties adjoining the park's borders.