National Space Standards
This proposed policy requires that all dwellings need to be built to national space standards. This requirement is currently set out on in the Adopted Cambridge Local Plan and the South Cambridgeshire Local Plan. Whilst this is a current requirement within the plan, there is still the requirement for the authority to justify the inclusion of this policy in the Greater Cambridge Local Plan. The NPP specifically sets out that need and viability need to be evidence. Viability is key with the costs of providing national space standards need to be considered alongside all of the other policy requirements set out in the plan.
M4(2) and M4(3)Standard
This proposed policy sets out that all new homes be built to M4(2) Accesible and Adoptable Dwellings standard. This is a significant increase above the standards set out in the South Cambridgeshire Local Plan which requires 5% of all dwellings to be built to M4(2) standard.
In terms of M4(3) a Wheelchair User Dwellings requires that 5% of dwellings meet this standard. This standard is a current requirement of the Cambridge Local Plan however not a current requirement of the South Cambridgeshire Local Plan.

The evidence put forward in the Houisng Needs of Specific Groups 2021 Paper is based iupon demographics and the number of people over 75 years of age and the expected increase in dementia and mobility problems. It is noted that the Houisng Needs paper sets out that within the region there is a slighty lower level of people with long term health problems in the region. An ageing population alone is not a reason alone to require an increase in standards, otherwise these increased standards would be set as standard in Building Regulations.

In line with PPG the following elements need to be evidenced in bringing forward this policy:

- The likely future need for hosung of older and disabled people;
- Size, location, type and quality of dwellings needed to meet specifically evidenced needs (for example retirement hoes, sheltered homes or care homes);
- The accessibility and adaptability of existing housing stock;
- How needs vary across different tenures; and
- The overall impact on viability

This evidence base is lacking at present.

If the above evidence supports the proposed direction of policy and there is a requirement for 100% M4(2) Standards within the policy, there shall be an element of flexibility incorporated into the policy wording in the event that achieving the M4(2) standard is not acheivable.

Amenity Space
The policy sets out that minimum size amenity space standards will be defined. Persimmon Homes would expect this to come forward as part of subsequent local plan consultation.