Rules for adding Outbuildings using Permitted Development

Transcription of the video

In this video, I go through the rules for adding outbuildings, rooflights, porches etc using Permitted Development.

This is video No 6 in a series of videos that started with Video No 1 considering eligibility for Permitted Development. Video No 2 listed the 10 conditions applicable to all extensions.

Outbuildings Time 0 00 1104
Adding Outbuildings with Permitted Development

It is recommended that you watch videos 1 and 2 before you watch this one.

In this video, we will examine these Classes:

  • Class C – roof alterations, such as re-roofing or adding roof lights
  • D – porches
  • E – outbuildings
  • F – hard surfaces
  • G – chimneys and soil pipes
  • H – microwave antenna

Class C: Roof Alterations

Class C provides permitted development rights for roof alterations that are not covered by Classes A and B. For example, it covers the installation of roof lights. There are no restrictions on placing rooflights or skylights on elevations facing a highway. They must not project more than 150 millimetres from the existing roof plane.

Outbuildings Time 0 01 0812 edited
Projection of rooflight

Class D: Porches

Class D allows you to build a porch outside any external door of a house, except where the house was created through a change of use. The maximum porch height is 3m above ground level.

Outbuildings Time 0 01 2620 edited
Maximum height for porch

The ground area covered by the porch is limited to 3 square metres and it must be more than 2m away from any curtilage boundary that fronts a highway. Curtilage is explained in Video 2.

Outbuildings Time 0 01 3526 edited
Distance of porch from highway

Class E: Outbuildings

Class E allows the construction of buildings, enclosures, swimming pools or other types of pool within the curtilage of a house.

Outbuildings ancillary to the main dwelling

Their purpose must be incidental to the enjoyment of the house and must not include normal residential uses. This means that they cannot be used as separate self-contained accommodation or as a primary residential space such as a bedroom, bathroom, or kitchen.

Outbuildings Time 0 02 0816 edited
Excluded types of outbuilding

Acceptable usage includes garden sheds, storage buildings, garages, garden decking, the keeping of poultry, bees, pet animals, birds or other livestock for the domestic needs or personal enjoyment of the house occupants.

Outbuildings Time 0 02 1429 edited
Allowable types of outbuilding

Class E also allows the siting of a container used for domestic heating purposes for the storage of oil or liquid petroleum gas. The maximum capacity allowed is 3,500 litres.

Outbuildings Time 0 02 4411 edited
Fuel container is allowable outbuilding

Buildings which are attached to the house are not permitted under Class E (they are subject to the rules of Class A).

Outbuildings Time 0 02 5100 edited
Attachments to house not permitted in Class E

Instead of using the phrase “any building, enclosure, pool or container”, I will use the term “Outbuilding” when describing the following limitations.

No outbuilding can be situated on land forward of a wall forming the principal elevation of the original house. Principal Elevation is discussed in Video No 4: Side Extension.

Outbuildings Time 0 03 1220 edited
Outbuildings forward of main house

The outbuilding is limited to one storey only.

Outbuildings Time 0 03 2505 edited 1
Single-storey only

The maximum outbuilding height is (i) 4 metres for a dual-pitched roof (or a hipped roof)

Outbuildings Time 0 03 3106 edited
4m maximum height

(ii) 2.5 metres where the outbuilding is within 2 metres of the boundary of the curtilage

Outbuildings Time 0 03 3805 edited
Maximum height when close to boundary

(iii) 3 metres in any other case

Outbuildings Time 0 03 4311 edited
Maximum height in other cases

The maximum eaves height is 2.5 metres.

Outbuildings Time 0 03 4510 edited
Maximum eaves height

The outbuilding must not be situated within the curtilage of a listed building

Outbuildings Time 0 03 5502 edited
Outbuilding on listed property

The outbuilding must not be related to a microwave antenna

Outbuildings Time 0 03 5907 edited
Association with microwave antenna

For a house within article 2(3) land, outbuildings located more than 20 metres from any wall of the house cannot have a total ground coverage of more than 10 square metres

Outbuildings Time 0 04 1427 edited
house within article 2(3) land

For a house within article 2(3) land, outbuildings cannot be sited between a side wall of the house and the boundary of the curtilage.

Outbuildings Time 0 04 2511 edited
Outbuildings at side of house

Class F: Hard Surface

Class F allows the provision of a hard surface.

Where the proposed hard surface area exceeds 5 square metres and sits on land between a highway and a wall forming the principal elevation of the house, the hard surface must be either porous material or designed to direct run-off water to a permeable area within the curtilage.

Outbuildings Time 0 04 4800 edited
Porous hard surface

Class G: Chimney, Flue or Soil Pipe

Class G allows the installation of a chimney, flue or soil pipe on a house.

The chimney or pipe can exceed the highest part of the roof by up to 1 metre.

Outbuildings Time 0 05 0422 edited
Flue height above roof

For a house on article 2(3) land, the chimney or pipe cannot be installed on a wall or roof slope which (i) fronts a highway, and (ii) forms either the principal elevation or a side elevation of the house.

Outbuildings Time 0 05 1903 edited
Article 2(3) land limitations

The terms ‘fronts a highway’ and ‘principal elevation’ are discussed in Video No 3: Side Extensions.

Class H: Microwave Antenna

Class H allows the installation of a microwave antenna, such as a satellite dish, on a house or within the curtilage of a house.

Outbuildings Time 0 05 5525 edited
microwave antenna within curtilage

The length of the antenna is measured in any linear direction and excludes mounting brackets.

Outbuildings Time 0 06 0103 edited
Maximum length of antenna

An antenna cannot exceed 1 metre in length or 0.6m where installed on a chimney.

Outbuildings Time 0 06 0500 edited
Antenna installed on chimney

You are not allowed more than 2 antenna, one of which is limited to 0.6m. An antenna installed on a chimney cannot protrude above the chimney

Outbuildings Time 0 06 2521 edited
Height of antenna above chimney

An antenna installed on a roof without a chimney cannot protrude above the highest part of the roof

Outbuildings Time 0 06 3224 edited
Antenna installed on house

An antenna installed on a roof with a chimney cannot protrude above the highest part of the chimney, or 0.6 metres measured from the highest part of the ridge tiles of the roof, whichever is the lower

Outbuildings Time 0 06 4706 edited
Installation limits for antenna

The maximum cubic capacity of an antenna is 35 litres

Outbuildings Time 0 06 5510 edited
allowable volume of antenna

For a house on article 2(3) land, an antenna must not be installed (i) on a building which exceeds 15 metres in height, OR

Outbuildings Time 0 07 0519 edited
Permitted height of building

(ii) on a chimney, wall or roof slope which faces onto, and is visible from a highway OR

Outbuildings Time 0 07 1129 edited
Antenna visible from highway

(iii) if located in the Broads, is visible from a waterway

Outbuildings Time 0 07 1907 edited
Antenna visible from waterway

Thats it for this video

In the next one, video No 7, I’ll go through the rules for adding 1 or 2 storeys under Permitted Development.

Outbuildings Time 0 07 3021
The next video is ready for you!