Perhaps I may reaffirm that if a local authority considers that a site is suitable for housing-led development in line with local and national policy, it will be able to use the permission in principle to help to ensure that the site gets delivered. The NPPF already provides strong protections for the type of sites listed in these amendments, including the green belt, the historic and the natural environment. At its heart, the framework is clear that local authorities should plan positively to meet each of the economic, social and environmental dimensions of sustainable development. For example, paragraph 157 sets out that plans should identify land where development would be inappropriate and contain a clear strategy for enhancing the natural built and historic environment.
Permission in principle does not change any of these existing protections. Local and national policy has always driven how local decisions are made, and the addition of a new route to obtaining planning permission does not change that. I suggest that setting out centrally what type of land may or may not be granted permission in principle would set an unwelcome precedent.
Noble Lords have tabled a number of amendments to Clause 136 that seek to restrict permission in principle to be granted for housing development only. Amendment 90, tabled by the noble Lord, Lord Beecham, is part of the group. Although I understand the desire to add more detail to the legislation at this stage, there are important reasons why it would be unwise to restrict the granting of permission in principle to housing development in the Bill. First, and most importantly, if we restrict permission in principle to housing only, we lose the crucial ability to facilitate mixed-use development. We are currently consulting on an approach that would enable permission in principle to be granted for housing-led development to allow for the possibility of mixed uses that are compatible with a residential environment. This means that as long as a site allocation is housing-led, local authorities will be able to grant permission in principle in line with local and national policy for other uses.