What are the optional technical housing standards? In March 2015, following consultation on accessible design standards, the government issued policy in the form of a Written Ministerial Statement on housing standards. It introduced optional requirements in the Building Regulations in respect of water and access, together with the nationally described space standard referred to as the ‘new national technical standards’. The new standards complement the mandatory Building Regulations 2010, SI 2010/2214 (the Building Regulations). See Practice Note: Obtaining building regulations approval. What optional technical housing standards can LPAs set? Policy PM13(1)(a) of the National Planning Policy Framework (NPPF) states that quantitative standards set through development plan policies for infrastructure provision, affordable housing requirements, parking, density, and design and placemaking should provide clarity and a high degree of certainty about the requirements that relevant development proposals are expected to meet, and should be justified, drawing upon relevant evidence of local characteristics and needs, while utilising or adapting relevant national standards where it is appropriate to do so (such as in relation to green infrastructure). Evidence in support of standards