Different Types of Loft Conversion

loft image in blog on Different Types of Loft ConversionThere are several different types of loft conversion.

Loft Conversion Styles:


Your Guide

 

Basic Types

  • Dormer loft conversion
  • Mansard loft conversion
  • Hip to gable loft conversion
  • Velux loft conversion


Other Types

  • L shaped loft conversion

L shaped dormer loft conversion L shaped mansard loft conversion L-shaped hip to gable loft conversion


  • Gambrel roof loft conversion
  • Bungalow loft conversion-
  • Full back addition loft conversion
  • Pod room loft conversion
  • Loft conversion with roof terrace
  • Truss roof loft conversion

Buzz Words

  • Terraced house loft conversion
  • Victorian terrace loft conversion
  • Victorian loft conversion
  • Semi detached loft conversion
  • Gable end loft conversion
  • New build loft conversion
  • Low roof pitch /
    raised roof loft conversion
  • Modern loft conversion
  • Mezzanine loft conversion
  • Basic loft conversion
  • Luxury loft conversions
  • Small loft conversion
  • Large size loft conversion
  • Diy loft conversion
  • Double mansard loft conversion –
    (true mansard)
  • Double dormer loft conversion

bedroom image in blog on Different Types of Loft Conversion existing and proposed elevations in blog on Different Types of Loft Conversion

kitchen extension image in blog on Different Types of Loft ConversionThis client in Hertfordshire applied for a simultaneous kitchen extension with his loft conversion.

Descriptions

loft image in blog on Different Types of Loft ConversionThis is a full back addition loft conversion.

Dormer loft conversions are the most common. The front pitch has skylights added and the rear pitch has a dormer structure incorporated to give more head-height. The dormer can be full size or smaller, retaining the aesthetic balance externally. It is popular to apply for the maximum size if feasible, since internal space is so desirable.

Dormer types

  • Flat roof (the most common)
  • Gable-front dormer
  • Hipped-roof dormer
  • Shed dormer (single plane pitch)

A loft with a pod-room is where an additional room is added above the back extension at a later date than the loft conversion. Ideally it is cheaper to do both at the same time. The pod can be a snug, an office, or (if space permits) a sizeable extra bedroom or bathroom.

 

A full back addition loft conversion builds out over your rear extension where possible. These types are the largest because you are creating a whole new floor with several rooms.


A mansard roof is a curb roof with 2 pitch angles on all 4 sides. The lower pitch is steeper and has the windows. A mansard loft conversion creates maximum space as you are adding another floor. The low pitch roof on top could be taken for a single plane roof with steep sides, as it is not visible from street level.)

small dormers photo  in blog on Different Types of Loft Conversion

Small, flat roof front dormers in South West London.

 

Gambrel roofs are curb roofs like mansards, but with only 2 double pitch sides. The other 2 sides are gable ends. (Gambrel roofs tend to be used on American-style barns.)

Hip roof loft conversion: the Loft is converted but the hip roofline is retained. This gives a smaller internal living space than hip to gable, but is slightly less contentious as regards planning concerns.

A hip to gable loft conversion adds more space for the bedroom and stairwell, but can be con-tentious for planning purposes if it creates asymmetry on the streetscape, unless the other end of terrace owner applies at the same time.

An L shaped mansard loft conversion is good for maximising added space, e.g. one large, open bed-room with an en suite bathroom or shower unit.) L shaped dormers may incur a higher fee with your architect, due to structural complexity and possible contention.

In a velux loft conversion, planning ap-proval is easier as the roof line is left intact. However, if you later add a dormer, it is less cost-effective to break through the finish and first fix than to have applied for it at the outset.

diagram of frame which replaces truss in blog on Different Types of Loft Conversion

The dark frame can safely replace the truss.

Gambrel roofs are curb roofs like mansards, but with only 2 double pitch sides. The other 2 sides are gable ends. (Gambrel roofs tend to be used on American-style barns.)

A truss roof loft conversion is where the modern W shaped truss that supports the roof can be removed safely once steel beams are in place. If the base of the truss to the apex is 2.3m then the loft is big enough to convert. As well as the steels, the truss is replaced by a standard frame as shown by the darker line in the adjacent diagram.

A mansard roof is a curb roof with 2 pitch angles on all 4 sides. The lower pitch is steeper and has the windows. A mansard loft conversion creates maximum space as you are adding another floor. The low pitch roof on top could be taken for a single plane roof with steep sides, as it is not visible from street level.)

 

We can Help

If you would like to know about your chances for planning approval for different types of loft conversion, council planning department timelines, or build cost estimates, give our planning team a call. We have a large team of architectural, interior & brand designers, and planning consultants under the same roof. This saves time and costs because we don’t have to contract out to get drawings or planning consultations. Also, you can see some examples of our loft conversions here.

 

Lofts & Permitted Development

Your PD rights can apply to different types of Loft Conversion, and partly depend on existing development of the site after 1948, despite being carried out by a former owner. Your loft will not be a PD if:

  • You live on Designated Land.
  • The new volume exceeds 40m3 for terraced / semi detached houses.
  • The new volume exceeds 50m3 for a detached house loft conversion.
  • Your are extending proud of the existing roof slope plane at the front, if it faces a road.
  • The external materials used in the loft conversion differ from the existing property.
  • The proposed extension goes higher than the existing roof.
  • It includes a balcony, veranda or raised platform.
  • Side window are not obscured, can be opened, and the opening mechanism is less than at 1.7m above its respective floor.
  • Roof extensions are set back less than 20cm from the eaves or hangs over the wall of the house.
loft drawing in blog on Different Types of Loft Conversion

This dormer loft conversion in Sutton needed a full planning application.

  • Your roof or loft project may impact bats. (To proceed, you also need a bat survey and a licence).
 

You Choose

We don’t tie clients into all the stages, so you can just do the planning stage with us. However, our architectural team can create Building Regulations drawings – for Building Control – at the pre-build stage once you have got your planning approval. Moreover, if our clients commit to planning, pre-build and construction support, we would discount their quote.

 

Get in Touch…


Discuss different types of Loft Conversion with us

We are happy to instruct structural engineers or technical surveys on your behalf if required. In addition we offer construction support via tender packs and contract administration. Give our team a call on 0203 409 4215 or leave your details via the contact button below. Our team will call you back for a free consultation and no-obligation quote for planning drawings.

 
 

 

 

 

Further Information

If you would like to see more information about different types of loft conversion, see the Planning Portal’s page on loft conversions.