§ The Government believe that it is important to help create mixed and inclusive communities, which offer a choice of housing and lifestyle. The planning system has an important role in creating communities with a better mix of housing, in terms of size, type and affordability. Planning for housing policies in regional planning guidance and local planning authorities' plans should be based on an up-to-date understanding of the housing required in communities and aim to widen the range of housing opportunity. The housing requirements of the whole community should be addressed, including those in need of affordable housing.