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For information about the guidance on this page and how it should be applied, visit Using this SPD.
Where proposals deviate from the guidance here, the Council will need to be satisfied that proposals are high quality and not detrimental to neighbourhood amenity. Pre-application submission is encouraged.
Two storey rear extension in Walthamstow (Neil Dusheiko Architects. Photographer: Tim Crocker)
7.6 Two storey rear extensions
7.6.1
For details of permitted development rights for two storey rear extensions to houses, refer to this page on the Planning Portal. If the proposal does not fulfil the criteria stated here, planning permission will be required.
7.6.2
Proposals for double storey rear extensions must:
at first floor level, extend no more than 2m from the original rear wall for terraced properties and semi-detached properties, and no more than 3m for detached properties.
not extend beyond the 45-degree line(s) as measured in plan from the middle of the nearest habitable room window(s) on the original rear wall of any neighbouring properties.
have eaves at the same level as, or below, the eaves of the original home.
7.6.3
Where homes have already been extended, consideration will be given to the cumulative impact on character and neighbouring amenity.
7.6.4
The inclusion of balconies or terraces may be supported, but each case will be considered individually and on its own merits, given potential neighbour and privacy impacts.
7.6.5
Biodiverse/green roofs should be considered for any newly introduced flat roof. Read more about green roofs here.
Two storey extension, maximum depth of 2m at first floor level
Two storey side and return extension clad in Douglas fir timber (Poroban. Photography: Ollie Hammick)
Retrofit considerations for two storey rear extensions - this can also be viewed in the right-hand side bar
Learn about the retrofit ideas above, and other retrofit measures, using the links below:
For information about the guidance on this page and how it should be applied, visit Using this SPD.
Where proposals deviate from the guidance here, the Council will need to be satisfied that proposals are high quality and not detrimental to neighbourhood amenity. Pre-application submission is encouraged.
Two storey rear extension in Walthamstow (Neil Dusheiko Architects. Photographer: Tim Crocker)
7.6 Two storey rear extensions
7.6.1
For details of permitted development rights for two storey rear extensions to houses, refer to this page on the Planning Portal. If the proposal does not fulfil the criteria stated here, planning permission will be required.
7.6.2
Proposals for double storey rear extensions must:
at first floor level, extend no more than 2m from the original rear wall for terraced properties and semi-detached properties, and no more than 3m for detached properties.
not extend beyond the 45-degree line(s) as measured in plan from the middle of the nearest habitable room window(s) on the original rear wall of any neighbouring properties.
have eaves at the same level as, or below, the eaves of the original home.
7.6.3
Where homes have already been extended, consideration will be given to the cumulative impact on character and neighbouring amenity.
7.6.4
The inclusion of balconies or terraces may be supported, but each case will be considered individually and on its own merits, given potential neighbour and privacy impacts.
7.6.5
Biodiverse/green roofs should be considered for any newly introduced flat roof. Read more about green roofs here.
Two storey extension, maximum depth of 2m at first floor level
Two storey side and return extension clad in Douglas fir timber (Poroban. Photography: Ollie Hammick)
Retrofit considerations for two storey rear extensions - this can also be viewed in the right-hand side bar
Learn about the retrofit ideas above, and other retrofit measures, using the links below:
Two storey rear extension in Walthamstow (Neil Dusheiko Architects. Photographer: Tim Crocker)
Two storey extension, maximum depth of 2m at first floor level
Retrofit considerations for two storey rear extensions - this can also be viewed in the right-hand side bar