Types of Loft Conversions

The type of loft conversion you need, will depend on a few factors; mainly the type of property you have, and any planning restraints that might be applicable to your property. There are four main types of loft conversion that we build: dormer, Velux, hip to gable and mansard loft conversions.

Dormer Loft Conversions

Types of loft conversion

Dormer loft conversions are the most popular loft style; they offer great flexibility with the choice of room layout in the loft and also maximize the total area of new space that can be constructed. Rear dormers can be constructed in most terraces and semi-detached properties, and the majority of them can be constructed without the need for planning permission.    

Key Points

  • The need for good apex height
  • Volume limits
  • Visual impact 


  • Maximises space 
  • Optimal room layouts
  • Usually carried out under permitted development

Mansard Loft Conversions

types of loft conversion

This type of conversion is generally designed and built within the inner London areas; where conversions need to follow the mansard design of existing roofs slopes and lofts. More often, this type of conversion is the preferred design option from a local planning perspective.

Key Points

  • Often used when planning issues are prevalent
  • Sloping roof / wall structure


  • In keeping with local and the building characteristics
  • Usually carried out under permitted developments  
  • Reduced visual impact

Hip to Gable Loft Conversions


This type of loft conversion will create more space compared with the types shown above. A hip to gable loft conversion is often the best way to extend and build into the roof space when the house has a hip end roof; these are commonly found on most early 1900’s semi-detached houses. The outside end wall is built up to form a gable wall and the roof ridgeline is extended. A rear dormer is then constructed on the rear.

Key Points
  • Volume limits
  • Possible planning issues
  • Maximises space for new loft area

Eaves Loft Conversions

Eaves Loft Conversions

An eaves loft conversion allows you to convert your existing loft space without altering the roof profile of your house. This is the simplest and least expensive way to add extra living space to your property. Sometimes referred to as a velux loft conversion, an eaves loft conversion is carried out within the existing roof space. This type of loft conversion has no dormers, and natural light is supplied into the newel loft room through velux roof windows installed into the roof pitch

Key Points
  • No planning issues
  • Good apex height  
  • Compromised headroom
  • Cost effective
  • No planning restrictions or volume limits

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