A Neighbourhood Plan is a community-led framework for guiding the future development and growth of an area. It may contain a vision, aims, planning policies, proposals for improving the area or providing new facilities, or allocation of key sites for specific kinds of development. All Neighbourhood Plans must meet Basic Conditions.
Neighbourhood plans relate to the use and development of land and associated social, economic and environmental issues. It may deal with a wide range of issues (like housing, employment, heritage and transport) or it may focus on one or two issues that are of particular importance in a local area.
A Neighbourhood Plan will be subject to examination and referendum and then form part of the Local Development Plan. The statutory status gives Neighbourhood Plans far more weight than some other local planning documents, such as parish plans, community plans and village design statements.
Locality is the "national network of ambitious and enterprising community-led organisations, working together to help neighbourhoods thrive." They have produced a Quick Guide to the process of drafting a neighbourhood plan which you can download here.
If you want a more in-depth look at neighbourhood plans, their Neighbourhood Plan Road Map outlines the process in depth. You can download it here.