Summary of new planning rules for householders

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Class A - Extensions and improvements
Class B - Roof extensions
Class C - Roof alterations
Class D - Porches
Class E - Outbuildings, enclosures, swimming pools and oil and gas containers
Class F - Hard surfaces
Class G - Chimneys, flues and soil and vent pipes
Class H - Microwave antenna (e.g. satellite dishes)

Class A - Extensions and improvements

Permitted development subject to the following limits and conditions:

no extension forward of the principal elevation or side elevation fronting a highway
no extension to be higher than the highest part of the roof
maximum depth of a single storey rear extension of 3m for an attached house and 4m for a detached house
maximum depth of a rear extension of more than one storey of 3m including ground floor
on designated land* no permitted development for rear extensions of more than one storey
maximum eaves height of extension three metres within 2m of boundary
maximum eaves and ridge height of extension no higher than existing house
side extensions to be single storey with maximum height of 4m and width no more than half that of the original house
two storey extensions no closer than 7m to rear boundary
roof pitch to extensions higher than one storey to match existing house
materials to be similar in appearance to the existing house
no verandas, balconies or raised platforms
side facing windows to be obscure-glazed, any openings to be 1.7m above the finished floor level
on designated land* no cladding of the exterior and
on designated land*, no side extensions.

* Designated land (article 1(5) land) including National Parks and the Broads, Areas of Outstanding Natural Beauty, Conservation Areas and World Heritage Site.

Class B - Roof extensions

Permitted development subject to the following limits and conditions:

a volume allowance of 40m³ for terraced houses
a volume allowance of 50m³ for detached or semi-detached houses
no extensions beyond the plane of the existing roof slope facing onto the highway
no extension to be higher than the highest part of the roof
materials to be similar in appearance to the existing house
no verandas, balconies or raised platforms
side facing windows to be obscure-glazed; any opening to be 1.7m above the finished floor level
roof extensions not to be permitted development in designated areas and
extensions to be set back, as far as practicable, at least 20cm from the eaves.

Class C - Roof alterations

Permitted development subject to the following limits and conditions:

any alteration to project no more than 150mm from the existing roof plane
no alterations to be higher than the highest part of the roof and
side facing windows to be obscure glazed; any opening to be 1.7m above the finished floor level.

Class D - Porches

No change to existing permitted development.

Class E - Outbuildings, enclosures, swimming pools and oil and gas containers

Permitted development subject to the following limits and conditions:

no building, enclosure, pool or container forward of the principal elevation fronting a highway
buildings to be single storey with maximum eaves height of 2.5m and maximum overall height of 4m with a dual pitched roof or 3m for any other roof
maximum height 2.5m within 2m of a boundary
no veranda, balconies or raised platforms
maximum 50% coverage of garden
on designated land* buildings, enclosures, containers or pools at the side of properties will require planning permission and
within the curtilage of a listed buildings any outbuilding will require planning permission.

* Designated land (article 1(5) land) including National Parks and the Broads, Areas of Outstanding Natural Beauty, Conservation Areas and World Heritage Site.

Class F - Hard surfaces

Permitted development subject to:

any surface installed in the front garden of more than 5m² to be either porous or to run-off to a porous or permeable surface.

Class G - Chimneys, flues and soil and vent pipes

Permitted development subject to:

the height being less than 1m above the highest part of the roof and
on designated land* no installations on the principal or side elevation that fronts a highway.

* Designated land (article 1(5) land) including National Parks and the Broads, Areas of Outstanding Natural Beauty, Conservation Areas and World Heritage Site.

Class H - Microwave antenna (e.g. satellite dishes)

No change to existing permitted development.