Creative Loft Conversions

Creating additional space for your home

Types of loft conversion

Rear Dormer

This is the most popular type of the conversion and most likely falls within lawful permitted development. (Click on above image for technical information).

A dormer loft extension includes a vertical wall built from the bottom of the rear roof slope, then a flat roof is installed from the higher part of the roof slope to meet the previously built vertical wall.

This not only maximises headroom but also projects most of the house floor space upwards.

Hip to Gable Dormer

This type of conversion is very popular with 1930’s style semi-detached properties and most likely falls within lawful permitted development. (Click on above image for technical information).

A vertical triangular gable wall is built from the bottom of the side roof slope to the highest ridgeline and then the front roof slope and ridgeline is extended to meet this gable wall.

Then the rear dormer construction is repeated as in the previously rear dormer section to give a projection of almost all of the house floor space upwards.

Velux Conversion

This type of conversion remains within the existing structure of the roof, therefore it is the easiest and cheapest way to convert adding only velux roof windows to the existing roofline creating enough space normally for one bedroom and a small en-suite shower room.

This conversion is the most likely out of all conversions to fall within lawful permitted development (Click on above image for technical information).

L Shaped Dormer

This type of conversion is suitable for most L Shaped Victorian properties with the formation of a dormer to the main block of the property and then another attached dormer to the rear addition of the property normally creating enough space for two bedrooms and a shower room.

This conversion normally uses all of the volume within lawful permitted development (Click on above image for technical information).

Rear Mansard

This type of conversion is above all the most aesthetically pleasing for the external design and is favoured by most planning authorities as a successful application.

The rear mansard is created with a 72 degree pitched rear wall built sloping backwards from the bottom of the roof slope with small vertical dormer windows protruding outwards.

The side parapet walls are then raised in matching brick work and also pitch back at the 72 degree angle.

L Shaped Mansard

This type of conversion as mentioned before in both Rear L Shaped Dormer and Rear Mansard is again aesthetically pleasing for a successful planning application.

This conversion can achieve again two bedrooms with one shower room and popular for successful planning applications to flats or maisonette properties.

Permitted development explained

A loft conversion for your house is permitted development, not requiring an application for planning permission, subject to the following limits and conditions:

  • A volume allowance of 40 cubic metres additional roof space for terraced houses*
  • A volume allowance of 50 cubic metres additional roof space for detached and semi-detached houses*
  • No extension beyond the plane of the existing roof slope of the principal elevation that fronts 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 floor
  • Roof extensions not to be permitted development in designated areas**
  • Roof extensions, apart from hip to gable ones, to be set back, as far as practicable, at least 20cm from the original eaves
  • The roof enlargement cannot overhang the outer face of the wall of the original house.

*Bear in mind that any previous roof space additions must be included within the volume allowances listed above. Although you may not have created additional space a previous owner may have done so.

**Designated areas include national parks and the Broads, Areas of Outstanding Natural Beauty, conservation areas and World Heritage Sites.

 

Please note: The permitted development allowances described here apply to houses and not to:

  • Flats and maisonettes
  • Converted houses or houses created through the permitted development rights to change use
  • Other Buildings
  • Areas where there may be a planning condition, Article 4 Direction or other restriction that limits permitted development rights.

Contact Us

For an obligation free consultation / survey and quotation please contact us below. Or email us from the our Contact page

Tel: 0800 689 5905
Email: info@penthouselofts.co.uk

Address:

Penthouse Lofts Ltd
137 - 139 High Street
Beckenham
BR3 1AG

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