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There are different types of loft conversions. To decide what sort of conversion would be suitable, consider the shape and line of your existing roof,  and your permitted development rights.  

Dormer loft

Suitable for most houses


The Dormer is the most popular type of loft conversion This is a structural extension which projects vertically from the slope of the existing roof, creating a box shape. Internally the dormer will have vertical lines and horizontal ceiling. This loft extension generally requires no major changes and allows for the installation of large windows or Juliet balconies. They are suitable for almost all UK house styles usually always fall under permitted development. 


Example Plan: 2 bedroom/1 bathroom

Example Plan: 1 bedroom/1 bathroom 

1 bed 1 bath dormer.jpeg


Ideal for a mid-terrace period property

An L-shaped dormer - which wraps around the side and rear of the property - is a popular option. Victorian and Edwardian terrace and end-of-terrace houses with a two-story rear extension are ideal for this. It offers the largest amount of space that can be created to offer separate rooms.  


Example Plan: L-shape Options

Example Plan: L-shape with middle shower room

Example Plan: L-shape with front shower room

se22thompsonroad L-shape.jpeg

Hip to Gable Dormer

End of terrace, semi-detached or detached


If you are semi-detached or end of terraced, you may also wish to consider a gabled dormer, which is much like a dormer but has a more traditional inverted "v" shaped roof. This type of loft conversion extends your property on the sloping side, effectively replacing the sloping roof This may be a more visually aesthetic choice for the front of your property.  

Example Plan: 1 bed 1 shower room

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Apex or Velux Conversion

Lofts with sufficient head height,  conservation areas

An apex or otherwise known as roof light conversion is where you don’t alter or expand the existing space at all, but simply add in windows and reinforce the floor to transform an attic into a comfortable living space. It is slightly cheaper than other loft types, and is most likely to get approved in conservation areas. You will, however, need to have a minimum of 2.25 headlight in the middle of the room leaving space to build up the floor. This head-height means that the stairs will have to go in the middle of the room. 

Example Plan: 1 bed, 1 bath


Mansard Loft Conversion

Terraced, or end of terrace and conservation area

A mansard loft conversion is constructed by raising the party wall (the wall shared with your neighbors). The roof remains flat, while one outer wall slopes gently inwards usually at 72 degrees. Windows are usually housed within small dormers. Mansards are typically found at the rear of the house, and although they are suitable for many property types, they are most popular in terraced houses. They will almost always require planning permission and are more likely to gain approval if your neighbors have them.

Example Floor Plan: 1 bed 1 bath

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Mansard L-shape loft Conversion

Terraced, or end of terrace or conservation areas

Not every property can have a mansard. An L-shape mansard, much like the above mansard, will most likely require planning permission. The only difference is the addition of a mansard to the rear outrigger. This addition is well worth considering.and would add extra space to include an additional bedroom or a bathroom 

Example Floor Plan: 2 bed 1 bath

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