Development Management Policies - Direction of ... - Islington Council

3 Managing Environmental Resources
- other minor measures, such as draft proofing and energy efficient lighting
(ii) where the scheme involves substantial works to the existing building, such as the external
fabric:
- all of the above measures, and
- solid wall insulation (where no cavities exist)
F. Proposals not covered by the above policies, including householder applications and
other minor extensions of less than 100m 2 , will be encouraged to apply cost-effective energy
efficiency measures to the existing property, where practical, in addition to requirements
applicable to the extension itself.
3.0.12 Note 1 : Policy DM 12 C does not apply to those minor changes of use, extensions of less
than 100m 2 and minor works, where there will be no new units, no intensification and no
significant construction works or changes to the building fabric.
3.0.13 The cumulative impact of minor schemes on climate change is likely to be significant. This
policy will ensure minor schemes maximise levels of energy efficiency and achieve the
highest viable levels of CO 2
reduction.
3.0.14 The design of proposals is required to take account of a range of factors, including building
shape, orientation, insulation, glazing, air-tightness, ventilation, heating and lighting. Best
practice standards to be achieved will be set out in the Sustainable Design SPD and any
amendment to and / or replacement of this document, and in any additional guidance
issued.
3.0.15 Parts B and C of the policy establish standards considered to be viable in minor schemes,
following detailed feasibility testing. In cases where compliance with CO 2
emissions targets
is argued not to be feasible, this will be assessed based upon a range of factors, including
technical considerations and financial viability. All remaining emissions are required to
be off set: this includes the remaining regulated CO 2
emissions not eliminated through
on-site measures, all unregulated emissions for minor residential schemes and unregulated
emissions for minor non-residential schemes. The off-setting of regulated emissions only
for non-residential schemes is due to the energy usage of many non-residential uses and
the viability of off-setting, based on the policy evidence base.
3.0.16 Conversions of properties to residential flats and some changes of use result in an
increased carbon footprint due to increased occupancy. Part E of this policy will minimise
the impact of conversions in terms of CO 2
and energy use, without a significant impact on
development viability.
3.0.17 Extensions to properties result in an increased carbon footprint, due to the increased
surface area of the property, increased heating and lighting requirements, and the ability
of the property to accommodate a greater number of occupants. Part F of this policy seeks
to minimise the impact of extensions and to achieve as close to zero carbon as possible,
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Islington Council Development Management Policies - Direction of Travel