The Hockerton Housing Project (HHP) is an innovative residential sustainable development in the village of Hockerton, near Southwell, Nottinghamshire. It was completed in September 1998 after three years of planning and 18 months of construction. The residences have been designed as one of the first zero energy residential systems in the UK, reducing life-cycle energy to a minimum, and are amongst the most energy efficient, purpose-built dwellings in Europe. Maximum use of benign, organic and recycled materials has been made in construction, and the development is designed to be, to a large extent, self-sufficient. The houses are earth-covered and have passive solar heating without a space-heating system. A wind turbine and photovoltaic system provide all of the energy required to run the homes. The water and sewage system is self-contained.

The development is located on a 10-ha site that has a slight slope just to the west of south. Previous use of the land was essentially agricultural. The large area has allowed incorporation of features that enable the occupants to live in a sustainable and self-sufficient way. This includes crop-cultivation and the rearing of small animals. It has also allowed for large water catchment for the homes and waste disposal via a reed-bed system.

In response to increasing visitors, a new learning-resource centre has recently been constructed by project members, which includes a dedicated audio-visual room, seminar facilities, and permanent exhibitions. The building itself is built to similar high environmental standards as the homes, including meeting the zero heating and zero CO2 standards. It also receives most of its energy from a second wind turbine recently installed.