Southampton City Vision Local Plan Chapter 7 - Development Principles

Placemaking and Quality of Development

Placemaking and Quality of Development Policy Options

Theme: Development Principle
Policy Name: Placemaking and Quality of Development
Policy Number: DE1(S)
Options Y/N: Y

 Placemaking and Quality of Development Policy Options Agree Disagree
Option 1a – There is a presumption in favour of retaining existing trees. Where the loss of trees cannot be avoided, replacement trees will be required to compensate for this loss, alongside additional trees as part of the landscape design. The number of trees required will depend on the size and type of the tree lost and the final Local Plan will set out the number of replacement trees required, 14 1
Option 1b – Seek to retain existing trees where possible. Where the loss of trees cannot be avoided, consider appropriate replacements on a case-by-case basis without setting out the number of replacements trees required. This is a more flexible approach but does not provide specific guidance for developers and may lead to the provision of fewer replacement trees. 1 14

Summary of responses (43 received)

In general, respondents were supportive of the policy approach, however, comments were received mainly around themes of putting the protection of trees and wider environment at the heart of development and design, securing safe and inclusive public routes including the waterfront for pedestrians and cyclists without discriminating persons with mobility and sensory difficulties, protection of heritage assets from tall buildings and higher density development, promoting high quality and innovative design and use of materials for new development, enhancing open space, and designing out crime with greater consideration for preventing violence against women and girls.

Respondents were generally supportive of Option 1a, whilst a few supported greater flexibility to assess tree loss and replacement on a case by case basis under Option 1b. It was suggested that a tree protection policy should stipulate longer periods for responsibility to maintain replacement trees, species of replacement trees should be carefully chosen to be native, have greater biodiversity benefits, and be direct replacements for those lost. A number of respondents considered the policy should go further to avoid any mature tree loss, and wherever possible introduce trees to achieve a net increase in tree canopy cover.

The impact on bird populations was also highlighted from loss of shrubbery corridors cleared to reduce risk of crime and more habitat loss mitigation in new landscaping.

City Centre Streets and Spaces

Summary of responses (9 received)

Theme: Development Principle
Policy Name: City Centre Streets and Spaces
Policy Number: DE2(S)
Options Y/N: N

There was general support for this policy with people keen to see greater emphasis on cycling and walking and reducing car use, particularly in the City Centre where car free areas can be created. Some felt this policy should also link to waterfront and facilitate the introduction of water buses and taxis.

Tall Buildings

Tall Buildings Policy Options

Theme: Development Principles
Policy Name: Tall Buildings
Policy Number: DE3(S)
Options Y/N: Y

Tall Buildings Policy Options Agree Disagree
Option 1a – To support tall buildings (5 or more storeys) within a 400m buffer of Southampton’s key transport corridors (see map 8 below) to promote the most efficient use of land and to align with key option 1a of Policy 2 (Density) which seeks to promote increased densities in these highly accessible and sustainable areas. 8 5
Option 1b - To not support tall buildings (5 or more storeys) within a 400m buffer of Southampton’s key transport corridors. 5 8

Summary of responses (34 received)

There were mixed opinions on this policy with some responses supporting a greater use of tall buildings and others raising various concerns. For those who supported tall buildings they considered that densification through the use of tall buildings would help address issues such as housing needs, affordability and reducing car travel. The use of architecture in tall buildings was thought to be a good way to make the city more distinctive. This formed part of a wider recurring comment that high quality design is important for tall buildings and will usually determine the success of a development. Consequently, some considered that greater clarity was needed as to what constitutes good design in a tall building.

Notably, some thought the policy was too conservative and did not go far enough in supporting the provision of more tall buildings. Other suggested it would be better to use a merit-based approach to allow tall buildings to come forward anywhere in the city where they would be appropriate for their surroundings.

There were however a number of concerns raised about the use of tall buildings with several responses suggesting that recent tall building developments in the city had not been of sufficiently high quality. Some were concerned that more tall buildings would be oppressive and ruin the airy feel of the city that comes from it having fewer tall buildings than other major cities. There were also concerns raised about allowing taller buildings within the 400m buffers of transport corridors. Some felt that tall buildings in these areas would not be in keeping with surrounding low-rise buildings. It was suggested that where transport corridors ran through areas of open space the buffer should be removed. Others suggested that having a buffer was too permissible an approach and instead specific sites should be identified within the buffers that would be appropriate for tall buildings.

Several responses were concerned by the use of tall buildings around the edges of the Central Parks as it was thought tall buildings in these locations would hem in the parks and have a poor visual impact. Whilst those who raised this issue ideally did not want to see any further tall buildings around the edges of the parks, it was suggested that at the very least rows of tall buildings should not be allowed.

Whilst most developers supported tall buildings they did suggest that more detail and timetables were needed regarding potential masterplanning work in the City Centre that would determine where taller buildings would be located. Developers also raised concerns about the approach taken with regards to viewing platforms, suggesting such platforms should be created through a design-led approach and take account of the commercial operation of the building rather than be implemented through a blanket requirement.

Certain areas of the city were suggested by developers as being appropriate for tall buildings including Ocean Village and Highfield Campus.

Historic England also raised some concerns and suggested the need for a more balanced approach to the positive and negative aspects of tall buildings and improving linkages with existing evidence documents such as the Tall Buildings Study and Conservation Area Appraisals. They also encouraged policy require the use of visualisations to help in the determination of planning applications for tall buildings. Responses from neighbouring authorities reiterated that tall buildings near the city boundaries would need to take account of neighbouring areas.

Waterfront

Summary of responses (15 received)

Theme: Development Principles
Policy Name: Waterfront
Policy Number: DE4(S)
Options Y/N: N

There was general support for the objectives of this policy and the need to have greater and more connected access to the waterfront. Some felt the Council needs to be stronger with developers, securing public access ahead of development and enforcing agreements, whilst others recognise the issues that have arisen in some parts of the city around land ownership and maintenance of paths. There is some support for the relocation of the Red Funnel Ferry terminal, but it was considered this must remain in a central location as it is a vital link to the Isle of Wight. There were overall strong feelings that improvements are needed to Mayflower Park and Town Quay Pier to provide amenity/leisure space. There was support for greening and discouraging car use. There was also a comment regarding the existing paths, noting the policy does not include anything on their maintenance or improvement.

This is not something that is covered by a Local Plan but will be shared with relevant colleagues in the council.

Accessible and Inclusive Design

Summary of responses (6 received)

Theme: Development Principles
Policy Name: Accessible and Inclusive Design
Policy Number: DE5
Options Y/N: N

There were no objections to this policy, with general agreement that the city should be accessible and welcoming to all people. This may require a range of different solutions to meet different needs of different people.

Housing Standards

Housing Standards Policy Options

Theme: Development Principles
Policy Name: Housing Standards
Policy Number: DE6
Options Y/N: Y

Housing Standards Policy Options Agree Disagree
Key Option 1 – Space standards
Option 1a – The council is proposing minimum standards for all new homes to ensure that all new development meets minimum size requirements for the number of bedrooms to protect the living conditions of occupiers. This would also provide the opportunity for Registered Providers of affordable housing to acquire new homes as they would meet their existing space standards. 7 1
Option 1b – Space standards are only applied to the smallest properties - Applying internal space standards to studio, one and two-bedroom properties would address the problem of small flats and provides flexibility for developers of properties with three or more bedrooms. A minimum size of 37m2 could apply to house conversions for one-bedroom properties irrespective of whether the property had a double or single bedroom. 0 7
Option 1c – Not applying space standards – As permitted development is now required to meet national space standards, the size of properties built has increased. Not requiring development to meet space standards may result in higher numbers of homes and improve their affordability. 0 7
Key Option 2 – Accessibility standards
Option 2a – The policy requires a proportion of new development to be accessible to people with reduced mobility and wheelchair users either on completion or with only limited adaptations required in the future. The policy proposes applying increased standards to developments of 10 or more and 50 or more homes. The proportion and threshold will be determined after further work is undertaken including a viability assessment. 8 0
Option 2b – Applying alternative thresholds for the introduction of accessibility standards. 1 2
Option 2c – Not applying higher accessibility standards due to the challenges in delivering accessible properties in the city and with the large proportion of flats built. 1 6

Summary of responses (17 received)

There was general support for improving the quality of homes and doing so by introducing a minimum space standard. Some comments from members of the public sought to encourage delivery of homes above the minimum standard whilst other cautioned against requiring too high a set of standards that might otherwise lead to a reduction in the overall number of new houses being delivered. Developers sought further evidence to justify the introduction of minimum space standards and to understand the impact this would have on viability.

There was also support for introducing accessibility standards with some comments highlighting how this would help people live in their own home for longer as their health and care needs change over time. Several comments considered that all new dwellings should be accessible whilst others considered having a proportion of accessible dwellings to be more pragmatic to ensure the overall delivery of more housing is not impacted. Nevertheless, a majority supported Option 2a of having a proportion of new dwellings to be accessible.

Developers highlighted that M4(2) standards for accessible and adaptable dwellings may become mandatory in Building Regulations within the next few years making it superfluous

to include this in the policy. Developers also sought greater clarity and flexibility around the different M4(3) standards for wheelchair and accessible dwelling. The proposed use of viability testing to help determine the proportions of accessible homes was welcomed by developers.

Energy and Net Zero Carbon Buildings

Energy and Net Zero Carbon Buildings Policy Options

Theme: Development Principles
Policy Name: Energy and Net Zero Carbon Buildings
Policy Number: DE7
Options Y/N: Y

Energy and Net Zero Carbon Buildings Policy Options Agree Disagree
Key Option 1 – Targets for space heating demand and air tightness
Option 1a – Require new development and conversions to meet targets for space heating demand and air tightness as set out in the policy. 9 1
Option 1b – Include a higher target of 60 kw/m2.yr for the space heating demand for listed buildings and other existing buildings which is easier to achieve than the general target. 2 5
Option 1c – Include higher targets or an interim level before the full targets apply and leave the delivery of net zero carbon to Building Regulations and Future Homes Standards. This will not fulfil the council’s statutory duty set out in the Climate Change Act and Planning Act and will not enable Southampton to achieve its carbon budget and deliver net zero carbon in line with Paris Agreement 1.5°C trajectory. 0 10
Key Option 2 – Decarbonisation of heating
Option 2a – All heating systems should be provided through low carbon fuels not fossil fuels. Where this is not possible, they should be designed to easily facilitate conversion at a later date. 11 0
Option 2b – Not include a requirement for the decarbonisation of heating systems, this would require homeowners to fund and install retrofit measures in order to achieve net zero carbon. 0 11
Key Option 3 – Embodied carbon
Option 3a – Require developments to calculate whole life carbon emissions and demonstrate measures to reduce these emissions. 7 3
Option 3b – Include targets to consider embodied carbon (in addition to the general approach in the policy). These could require development to achieve: - 2024- zero carbon regulated (Part L) operations (equivalent of Code 5) - 2030 – zero carbon all operations (equivalent of Code 6) - 2035 – whole life carbon assessment needed and at least 50% reduction against notional standard - 2040 – zero whole life assessment (construction, operational and ongoing extensions and repairs) Some offsetting likely to be needed. 5 4
Option 3c – Include targets for embodied carbon. Reduce embodied carbon by 40%. 6 4

Summary of responses (38 received)

In general, the policy approach has been welcomed, however, many respondents have differing views on the level and type of energy standards which should be applied to achieve net zero, including those who consider that energy standards should not be set by the City Vision and the policy should not go beyond or duplicate Building Regulations and Future Homes Standards as this would not allow the market to work in the favour of developers by creating economies of scale. Furthermore, concerns were raised that the standards would risk making development financially unviable or be a constraint in construction techniques where standards are being pushed towards passivhaus, whilst the standards should only be applied ‘where possible’.

Others considered that the policy allows developers too much flexibility which will result in buildings having to be retrofitted, or fitted in the meanwhile with low carbon technologies such as green hydrogen and biomass boilers which have less benefits than technology such as heat pumps to reach net zero. Furthermore, it was questioned why the same standards are not applied to ‘other buildings’ such as office to residential conversions, whilst the renewable energy part of the policy should have a better interface with policy EN1 to take into account the impact on heritage assets. It was suggested that all available facades and pitched roofs on new buildings should be covered to maximise solar renewable energy, whilst solar heating is missing from the policy considerations. It was suggested to improve compatibility between on-plot low carbon energy measures and district heating with sleeving for carbon accounting through Southampton's existing district energy network, and by using low temperature energy systems.

A number of respondents were concerned that the policy wording was vague and open to interpretation to know exactly what the policy requires, especially where the policy uses terms such ‘aspirational’ and ‘maximise’. Others sought more detailed guidance on calculations such as offsetting, and that unregulated emissions should not be considered by the policy given their difficulty to control.

Differences in opinion were raised over the approach to valuing the net zero impact of embodied carbon in re-using existing buildings. Many considered that there should be

presumption to prioritise retrofitting and repurposing existing buildings. Others supported a more pragmatic approach to assess whether there would be greater net zero benefits by replacing an existing building with a more efficient one, whilst organisations such as the University of Southampton were concerned an inflexible approach to demolition would undermine the programme to redevelop their estate. There was uncertainty over how the carbon life cycle assessment would work in practice and be monitored given the limited details set out in the policy. Others pointed out added benefits of tackling fuel poverty by reducing the carbon footprint of buildings.

Sustainable Design of New Development

Sustainable Design of New Development Policy Options

Theme: Development Principles
Policy Name: Sustainable Design of New Development
Policy Number: DE8
Options Y/N: Y

Sustainable Design of New Development Policy Options Agree Disagree
Key Option 1 – Sustainability standards
Option 1a - development is required to meet set BREEAM and BREEAM Communities standards, specific Buildings Regulations (2021) mitigation and Passivhaus certification. 6 1
Option 1b – require development to achieve higher standards due to the importance of issues. This could include Passivhaus certification on a higher percentage of housing or at a lower threshold. 6 1
Key Option 2 – Design led approach
Option 2a - require all development to take a design led approach to climate change adaptation and follow the cooling hierarchy, proportionate to the size of development. 6 1
Option 2b – include a threshold for the size of developments that need to take a design led approach to climate change adaptation and exclude householder developments. 0 6

Summary of responses (11 received)

There are mixed views whether the policy approach will proportionately address the carbon emissions impact of development.

Respondents from the development industry considered that a more flexible approach should be applied to support design evolution, with the option to use alternative accreditation bodies, and the policy should set lower standards to ensure that the costs of

development remain feasible with no requirements to meet BREEAM or passivhaus certifications. Others raised the issue that some of the standards set out in the policy are mandatory by Building Regulations so should not be included in the City Vision. Additionally, evidence for the passivhaus target set for large scale residential development has not been justified.

In taking an alternative view, most other respondents were concerned that the policy approach would lead to a greater need to retrofit buildings built at a lower standard and, therefore, suggested a more ambitious approach to set higher standards for all developments to achieve passivhaus, and the passivhaus standard should be achieved by a greater proportion of homes within a largescale residential development including affordable homes. Additionally, a standard near passivhaus should be applied to retrofitting existing homes.

Waste and the Circular Economy

Waste and the Circular Economy Policy Options

Theme: Development Principles
Policy Name: Waste and the Circular Economy
Policy Number: DE9
Options Y/N: Y

Waste and the Circular Economy Policy Options Agree Disagree
Key Option 1 – Sustainability standards
Option 1a - development is required to provide Construction Environmental Management and Circular Economy Statement to demonstrate how issues are addressed and meet requirements for the storage of refuse and recycling materials. 7 0
Option 1b – require development to address the storage of refuse and recycling materials without including minimum standards for the number, type and size of facilities to provide greater flexibility and recognise the size limitations of new developments. 0 6

Summary of responses (3 received)

In general, the policy approach was supported. It was suggested that the policy ‘must’ require developers to first consider whether re-using existing buildings is possible to avoid demolition and rebuild in order to minimise waste generated and reduce carbon emissions.

Shopfronts, Signage and Advertisements

Shopfronts, Signage and Advertisements Policy Options

Theme: Development Principles
Policy Name: Shopfronts, Signage and Advertisements
Policy Number: DE10
Options Y/N: Y

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Shopfronts, Signage and Advertisements Policy Options Agree Disagree
Option 1a - utilise the criteria as set out in Policy DE10 to guide and control the design of shopfronts. This will ensure there is a defined approach to how shopfronts should look. However, this may require further guidance to ensure it is suitably implemented by applicants. 3 0
Option 1b – utilise a less prescriptive approach than the criteria set out in Policy DE10. This could allow for more flexibility and innovation in the design of shopfronts to respond to retail trends but could have a detrimental effect on local character and amenities. 1 2
Option 1c – utilise a more prescriptive approach and include additional criteria to that set out in Policy DE10. This could ensure there are tight controls to the design of shopfronts that can reinforce high quality design and a traditional appearance. However, this could stifle innovation, be unnecessary in some commercial shopping areas and require additional resource to guide and determine planning applications. 0 3

Summary of responses (1 received)

There was support indicated for the proposed approach to the design of shopfronts with comments expressing support for Option 1a to utilise the approach as drafted in policy

Parking

Parking Policy Options

Theme: Development Principles
Policy Name: Parking
Policy Number: DE11
Options Y/N: Y

Parking Policy Options Agree Disagree
Key Option 1 – Where the Parking Standards will be Published
Option 1a - To continue setting out the parking standards in the Parking Standards SPD – this is the Councils preferred approach as it would allow flexibility for the standards to be updated in a future successor Parking Standards SPD. 6 1
Option 1b – The policy to set out the standards of provision which are expected including where these apply within the city – this option would be less flexible in tying the Council to a set of parking standards over the lifetime of the Local Plan. These would then not be able to be reviewed and updated in a future successor Parking Standards SPDs. 0 7
Key Option 2 – Approach to Setting Parking Standards
Option 2a - to continue with the approach currently set out in the Parking Standards SPD with maximum standards which currently identify high accessibility and standard accessibility areas – this is the Councils current preferred policy approach which helps to maintain a balanced and controlled provision of vehicle parking across the city. 6 1
Option 2b – to consider an alternative approach to parking standards across the city. E.g. minimum parking requirements rather than maximum parking standards – this is an alternative approach the Council could consider with the future provision of vehicle parking. 1 5

Summary of responses (19 received)

Many of the responses wanted to see a different approach to parking than may have taken place in recent decades. There was general consensus that parking levels in new developments should be reduced, if not made entirely parking free, in areas with good accessibility to services and public transport such as the City Centre and near train stations. Consequently, it was suggested in several responses that any parking standards in the City Vision should be maximum standards and seek to reduce the demand for car travel. There were suggestions that levels of parking in the city should be analysed to see where demand could be reduced and spaces freed up for other uses such as parklets.

Responses from most developers supported the flexibility of including the parking standards in an SPD although some preferred them to be included within the City Vision as they would be easier to look up alongside other standards in a single place such as an appendix.

There was support for including cycle parking standards and for recognising the need to provide parking for different types of cycles. However, it was suggested that cycle parking should also take better account of the physical abilities of the cyclist as well, by providing more accessible spaces for those who struggle with cycle parking racks.

There were suggestions that references in the policy and supporting text to issues around inadequate levels of parking should reflect that this is often a consequence of poor urban design and should be addressed as such to tackle issues such as parking on pavements.

Several responses raised the issue of a lack of park and ride facilities in the city and that this should be addressed within this policy.

Electric Vehicle Infrastructure

Electric Vehicle Infrastructure Policy Options

Theme: Development Principles
Policy Name: Electric Vehicle Infrastructure
Policy Number: DE12
Options Y/N: Y

Electric Vehicle Infrastructure Policy Options Agree Disagree
Option 1a - all developments to meet the standards for the provision of charging infrastructure for electric vehicle appropriate for the specific type of development, subject to viability. 5 2
Option 1b – require a minimum standard of provision from larger developments with the remaining provision viability tested to ensure that larger developments achieve at least a minimum standard of provision. 2 3

Summary of responses (11 received)

The consultation responses were generally supportive of the policy approach, with the exception that a respondent considered the City Vision should not duplicate Building Regulations Part S which already requires EV charging to be provided by development, and EV should only be encouraged as an interim solution while shifting to car journeys to public transport and active travel. Others considered that the policy approach should be less flexible for developers to take into account development viability. In addition, it was suggested the policy should make provision for the EV charging infrastructure demand for cyclists including e-cargo bikes, kerbside parking, and parking courts outside Council tower blocks. Others felt that parking infrastructure for other kinds of vehicles should be provided such as hydrogen powered vehicles.

Southampton International Airport

Summary of responses (1 received)

Theme: Development Principles
Policy Name: Southampton International Airport
Policy Number: DE13
Options Y/N: N

There was feeling that this policy is a little one sided in protecting the airport and should consider impacts of the airport on surrounding proposed development.