===== PAGE 1 ===== Retrofit – do I need permission? The table below provides guidance on where planning permission or listed building consent is required for different retrofit measures. Please note that permitted development rights are periodically amended. The Council will endeavour to make sure that the guidance provided in the table below is accurate and up to date. If you are unsure about whether permission is required, then you should seek advice from an expert or use the Council's pre-application advice service. You should also be aware that some retrofit measures are controlled under the Buildings Regulations. If you need further advice on this, please visit the Council's Building regulations page. ===== PAGE 2 =====
MeasureDwelling (excluding those that have had permitted development rights removed, or those located within the AONB or a conservation area)Dwelling in the AONBDwelling in a conservation areaDwelling which is the subject of an Article 4 Direction (subject to the specific nature of the direction)Listed Building
Electric vehicle charging pointWall mounted outlet Planning permission not required provided the outlet and its casing will not exceed 0.2 cubic metres, and provided it is not located on scheduled ancient monument land.Wall mounted outlet Planning permission not required provided the outlet and its casing will not exceed 0.2 cubic metres, and provided it is not located on scheduled ancient monument land.Wall mounted outlet Planning permission not required provided the outlet and its casing will not exceed 0.2 cubic metres. UpstandWall mounted outlet Planning permission not required provided the outlet and its casing will not exceed 0.2 cubic metres. UpstandPlanning permission required for both wall mounted outlets and upstands. Listed building consent potentially required for wall mounted outlets.
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MeasureDwelling (excluding those that have had permitted development rights removed, or those located within the AONB or a conservation area)Dwelling in the AONBDwelling in a conservation areaDwelling which is the subject of an Article 4 Direction (subject to the specific nature of the direction)Listed Building
Upstand Planning permission not required provided the upstand will not exceed 1.6 metres in height for residential or 2.7 metres in height for non-residential and provided it is not located on scheduled ancient monument land.Upstand Planning permission not required provided the upstand will not exceed 1.6 metres in height for residential or 2.7 metres in height for non-residential and provided it is not located on scheduled ancient monument land.Planning permission not required provided the upstand will not exceed 1.6 metres in height. (No more than one upstand per parking space).Planning permission not required provided the upstand will not exceed 1.6 metres in height. (No more than one upstand per parking space).
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MeasureDwelling (excluding those that have had permitted development rights removed, or those located within the AONB or a conservation area)Dwelling in the AONBDwelling in a conservation areaDwelling which is the subject of an Article 4 Direction (subject to the specific nature of the direction)Listed Building
(No more than one upstand per parking space).(No more than one upstand per parking space).
Double/triple glazingPlanning permission not required provided any replacement windows are 'similar in appearance' to the existing (i.e. have a similar visual appearance to those in the existing house, for example in terms of their overall shape, and thePlanning permission not required provided any replacement windows are 'similar in appearance' to existing (i.e. have a similar visual appearance to those in the existing house, for example in terms of their overall shape, and thePlanning permission not required provided any replacement windows are 'similar in appearance' to existing (i.e. have a similar visual appearance to those in the existing house, for example in terms of their overall shape, and thePlanning permission may be required if the Article 4 Direction places restrictions on the replacement of windows or doors.Listed building consent will be required.
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MeasureDwelling (excluding those that have had permitted development rights removed, or those located within the AONB or a conservation area)Dwelling in the AONBDwelling in a conservation areaDwelling which is the subject of an Article 4 Direction (subject to the specific nature of the direction)Listed Building
colour and size of the frames).colour and size of the frames).colour and size of the frames).
External wall insulationPlanning permission extbf{not} required.Planning permission required.Planning permission required.Planning permission required.Listed building consent required.
Internal wall insulationNot development (planning permission not required).Not development.Not development.Not development.Listed building consent required.
Ground source heat pumpsPlanning permission extbf{not} required.Planning permission extbf{not} required.Planning permission extbf{not} required.Planning permission extbf{not} required.Planning permission extbf{not} required.
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MeasureDwelling (excluding those that have had permitted development rights removed, or those located within the AONB or a conservation area)Dwelling in the AONBDwelling in a conservation areaDwelling which is the subject of an Article 4 Direction (subject to the specific nature of the direction)Listed Building
Listed building consent required if likely to affect a listed building or structure.
Air source heat pump (ASHP) IMPORTANT: Noise Standards An ASHP cannot exceed 42dB at aPlanning permission not required provided - a) No more than 1 ASHP for non-detached houses or block of flats. No more than 2Planning permission not required provided - a) No more than 1 ASHP for non-detached houses or block of flats. No more than 2Planning permission not required provided - a) No more than 1 ASHP for non-detached houses or block of flats. No more than 2Planning permission not required provided - a) No more than 1 ASHP for non-detached houses or block of flats. No more than 2Planning permission required. Listed building consent required if likely to affect a
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MeasureDwelling (excluding those that have had permitted development rights removed, or those located within the AONB or a conservation area)Dwelling in the AONBDwelling in a conservation areaDwelling which is the subject of an Article 4 Direction (subject to the specific nature of the direction)Listed Building
distance of 1 metre from the centre of a neighbour's habitable room window, known as the 'assessment point'. Please see Microgeneration Certificate Scheme (MCS) Planning Standards (MCS 020) - UNDER REVIEWASHP for a detached house. b) No wind turbines c) The volume of the ASHP's outdoor compressor unit (including any housing) will not exceed 1.5 cubic metres d) No part of the ASHP will be installed within 1 metre of the boundaryASHP for a detached house. b) No wind turbines c) The volume of the ASHP's outdoor compressor unit (including any housing) will not exceed 1.5 cubic metres d) No part of the ASHP will be installed within 1 metre of the boundaryfor a detached house. b) No wind turbines c) The volume of the ASHP's outdoor compressor unit (including any housing) will not exceed 1.5 cubic metres d) No part of the ASHP will be installed within 1 metre of the boundaryASHP for a detached house. b) No wind turbines c) The volume of the ASHP's outdoor compressor unit (including any housing) will not exceed 1.5 cubic metres d) No part of the ASHP will be installed within 1 metre of the boundarylisted building or structure.
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MeasureDwelling (excluding those that have had permitted development rights removed, or those located within the AONB or a conservation area)Dwelling in the AONBDwelling in a conservation areaDwelling which is the subject of an Article 4 Direction (subject to the specific nature of the direction)Listed Building
https://mcscertified.com/wp-content/uploads/2021/10/MCS-020.pdf https://mcscertified.come) The ASHP will not be installed on a pitched roof f) The ASHP will not be installed on a flat roof and be within 1 metre of the external edge of that roofe) The ASHP will not be installed on a pitched roof f) The ASHP will not be installed on a flat roof and be within 1 metre of the external edge of that roofe) The ASHP will not be installed on a pitched roof f) The ASHP will not be installed on a flat roof and be within 1 metre of the external edge of that roof g) The ASHP will not be installed on a wall or a roof which fronts a highway h) The ASHP will not be installed so that it is nearer to anye) The ASHP will not be installed on a pitched roof f) The ASHP will not be installed on a flat roof and be within 1 metre of the external edge of that roof g) The ASHP will not be installed on a wall or a roof which fronts a highway h) The ASHP will not be installed so that it is nearer to any
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MeasureDwelling (excluding those that have had permitted development rights removed, or those located within the AONB or a conservation area)Dwelling in the AONBDwelling in a conservation areaDwelling which is the subject of an Article 4 Direction (subject to the specific nature of the direction)Listed Building
highway which bounds the curtilage of the site than the part of the dwellinghouse, which is nearest to that highwayhighway which bounds the curtilage of the site than the part of the dwellinghouse, which is nearest to that highway
Roof mounted solar PV/solar thermal equipmentPlanning permission not required provided - a) The solar PV will not protrude more than 0.2 metres beyond the plane of thePlanning permission not required provided - a) The solar PV will not protrude more than 0.2 metres beyond the plane of thePlanning permission not required provided - a) The solar PV will not protrude more than 0.2 metres beyond the plane of thePlanning permission not required provided - a) The solar PV will not protrude more than 0.2 metres beyond the plane of theListed Buildings consent will be required. Planning permission will be required.
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MeasureDwelling (excluding those that have had permitted development rights removed, or those located within the AONB or a conservation area)Dwelling in the AONBDwelling in a conservation areaDwelling which is the subject of an Article 4 Direction (subject to the specific nature of the direction)Listed Building
wall or the roof slope when measured from the perpendicular with the external surface of the wall or roof slope b) The solar PV will not be higher than the highest part of the roof (excluding any chimney) c) In the case of solar PV on a flat roof, the solar PV will not be 0.6wall or the roof slope when measured from the perpendicular with the external surface of the wall or roof slope b) The solar PV will not be higher than the highest part of the roof (excluding any chimney) c) In the case of solar PV on a flat roof, the solar PV will not be 0.6wall or the roof slope when measured from the perpendicular with the external surface of the wall or roof slope b) The solar PV will not be higher than the highest part of the roof (excluding any chimney) c) In the case of solar PV on a flat roof, the solar PV will not be 0.6wall or the roof slope when measured from the perpendicular with the external surface of the wall or roof slope b) The solar PV will not be higher than the highest part of the roof (excluding any chimney) c) In the case of solar PV on a flat roof, the solar PV will not be 0.6
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MeasureDwelling (excluding those that have had permitted development rights removed, or those located within the AONB or a conservation area)Dwelling in the AONBDwelling in a conservation areaDwelling which is the subject of an Article 4 Direction (subject to the specific nature of the direction)Listed Building
metres higher than the highest part of the roof (excluding any chimney) d) The solar PV will not be installed on a building within the curtilage of a of a listed building e) Not on scheduled ancient monument landmetres higher than the highest part of the roof (excluding any chimney) d) The solar PV will not be installed on a building within the curtilage of a of a listed building e) Not on scheduled ancient monument landmetres higher than the highest part of the roof (excluding any chimney) d) The solar PV will not be installed on a building within the curtilage of a listed building e) The solar PV will not be installed on a wall which fronts a highway f) Prior Approval will be requiredmetres higher than the highest part of the roof (excluding any chimney) d) The solar PV will not be installed on a building within the curtilage of a listed building e) The solar PV will not be installed on a wall which fronts a highway
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MeasureDwelling (excluding those that have had permitted development rights removed, or those located within the AONB or a conservation area)Dwelling in the AONBDwelling in a conservation areaDwelling which is the subject of an Article 4 Direction (subject to the specific nature of the direction)Listed Building
where solar panels are located on a flat roof in conservation areas and National Landscapes
Ground mounted solar PVPlanning permission is not required provided - a) No more than one stand-alone solar b) The stand-alone solar will notPlanning permission is not required provided - a) No more than one stand-alone solar b) The stand-alone solar will notPlanning permission is not required provided - a) No more than one stand-alone solar b) The stand-alone solar will notPlanning permission is not required provided - a) No more than one stand-alone solar b) The stand-alone solar will notPlanning permission required.
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MeasureDwelling (excluding those that have had permitted development rights removed, or those located within the AONB or a conservation area)Dwelling in the AONBDwelling in a conservation areaDwelling which is the subject of an Article 4 Direction (subject to the specific nature of the direction)Listed Building
exceed 4 metres in height c) The stand-alone solar will not be installed within 5 metres of the boundary of the curtilage of the site d) The stand-alone solar will not be installed within the curtilage of a listed building e) The surface area of the solar panels formingexceed 4 metres in height c) The stand-alone solar will not be installed within 5 metres of the boundary of the curtilage of the site d) The stand-alone solar will not be installed within the curtilage of a listed building e) The surface area of the solar panels formingexceed 4 metres in height c) The stand-alone solar will not be installed so that it is nearer to any highway which bounds the curtilage of the site than the part of the dwellinghouse which is nearest to that highway d) The stand-alone solar will not be installed within 5exceed 4 metres in height c) The stand-alone solar will not be installed so that it is nearer to any highway which bounds the curtilage of the site than the part of the dwellinghouse which is nearest to that highway d) The stand-alone solar will not be installed within 5
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MeasureDwelling (excluding those that have had permitted development rights removed, or those located within the AONB or a conservation area)Dwelling in the AONBDwelling in a conservation areaDwelling which is the subject of an Article 4 Direction (subject to the specific nature of the direction)Listed Building
part of the stand-alone solar will not exceed 9 square metres or any dimension of its array (including any housing) will not exceed 3 metresf\nNot on scheduled ancient monument landpart of the stand-alone solar will not exceed 9 square metres or any dimension of its array (including any housing) will not exceed 3 metres.\nNot on scheduled ancient monument landmetres of the boundary of the curtilage of the site\nThe stand-alone solar will not be installed within the curtilage of a listed building\nf) The surface area of the solar panels forming part of the stand-alone solar will not exceed 9 square metres or any dimension ofmetres of the boundary of the curtilage of the site\ne) The stand-alone solar will not be installed within the curtilage of a listed building\nf) The surface area of the solar panels forming part of the stand-alone solar will not exceed 9 square metres or any dimension of
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MeasureDwelling (excluding those that have had permitted development rights removed, or those located within the AONB or a conservation area)Dwelling in the AONBDwelling in a conservation areaDwelling which is the subject of an Article 4 Direction (subject to the specific nature of the direction)Listed Building
its array (including any housing) will not exceed 3 metres.its array (including any housing) will not exceed 3 metres.