Dormer Loft Conversion


Are you thinking for a Loft Conversion that gives your home a versatile fit? An additional floor and head space that isn’t just a great solution for your property, but also planning, costing, and regulations of building. Doesn’t that sound great? Loft Conversion London; just a perfect fit.

Loft conversion is undeniably, an ideal way to increase the usable floors pace and add head height that gives you more options than any other. But, what exactly is Dormer Loft Conversion London?

What is a Dormer Loft Conversion?

The Dormer loft conversion is built out of the existing slope of the roof; it is an extension of the existing roof that allows extra additional floor and headroom in lofts having limited space. It is an addition, to the existing roof, it’s like a box-shaped structure added onto a pitched roof, creating the walls that are vertical to the slope and 90 degrees to the floor.

It is a kind of conversion that is cost-effective in a way to add extra space to house.  The Dormer extension protrudes from roof slope and can be changed to suit variety of styles.  This type of loft conversion aids to foster minimal disruption to most of the work, as it is carried out from the scaffolding outside home. There are varied types of dormer loft conversion and which one of it will best suit for your home will entirely depend on the type of property (terraced, detached, semi-detached) and current roof size and shape.

It is regarded as the most common type of loft conversion for some reasons -

● Creates additional headspace and floor space 

● Cost-effective.

● No need for permission within specific conditions and limitations.

A Dormer conversion can be added to the side, or front part of the property, it can be considered adding an unsuited, a study, home office, or a bedroom. It depends on the existing structure of your house and the type of dormer conversion you are looking for in your home. 

The Dormer loft conversion is a cost-effective way to add extra space to your house. The Dormer extension normally protrudes from the rear of the property, the dormer attic protrudes from the roof slope and this can be changed to suit a variety of styles. We have worked with some dormer loft conversions that have resulted in additional space of up to 50 cubic meters. This type of loft conversion gives minimal disruption as most of the work is carried out from the scaffolding outside your home. There are several types of dormer loft conversion and the best suited for your home will entirely depend on the type of property (terraced, detached, semi-detached) and your current roof shape.

Varieties of Dormer Lofts in London

Dormer Lofts are built in a different shape, from the usual flat and shed-shaped to the gabled, pediment, hipped and arched.

Flat Dormer

Flat Dormer conversions which are the most common of all conversions as they tend to give the maximum amount of internal space. On the contrary, they might not look as attractive from the outside, but the extra internal space makes it up for the lack of good looks. The gable-fronted and hipped-roof dormers are much more appealing to the eye; however, they may not give much internal space and will surely cost more to build due to the extra bit of complexity.  Just for your own knowledge, there are some local councils in London that do not allow dormers so before you select the choice of your loft conversion, ensure you check the rules with your local planning department.

Gable Roof Dormers

The Gable Roof Dormer is the best loft conversion solution for terraced properties. This is also known as the dog-house dormer, which is a more complex conversion which requires the gable wall extension upwards to meet the current ridgeline, with a new sloping roof area also built towards the new gable end.  This conversion does not require planning permission. We simply work on the existing pitched roof in order to maximize space. By adding vertical windows, you increase the sunlight and space.

Hip Roof Dormer

The hip roof dormer is quite like the gable roof dormer in terms of the general structure; however, the actual roof layout is different. A hipped roof dormer is a conversion where the roofs slope on all three sides of the structure.  This conversion is attractive to look at but this type of conversion results in less internal usable space. Areas around the UK that are prone to high winds favor this type of loft conversion. Overall it is a complex conversion to construct due to the sloping planes.

Shed Roof Dormer

The Shed Roof Dormer is a similar conversion to that of the flat roof, the only difference being the angle at which the roof slopes down. The shed roof dormer has only a single sloping plane. These are the best suited for properties of the Victorian era or homes with a gable roof.

Arched Dormer

Last on the Dormer Loft Conversion variety is the Arched Roof Dormer. This is loft conversion that has an arched roof and best suited for period properties of the Victorian era.



The right kind of loft conversion London is influenced by 3 major factors –

  1. The type of roof you actually have right now
  2. The main purpose you want to use the loft for
  3. Your budget, yes!


The most important factor to consider when starting to think about converting the loft space within your home is your existing loft structure. You can consider a dormer if you have a pitched roof and loft space.


Planning permission is generally not required, but when you cross the limitations set by the authorities, you may have to do some paperwork. A loft conversion is usually considered under permitted development, and is subject to some limitations and conditions -

● Allowance of 40 cubic meters additional roof space for terraced houses*

● Allowance of 50 cubic meters 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.

Loft conversion London usually works under limitations, however, the permission is still required. Loft Conversion London ensures to stand beside you to make a smooth transition. Take a look at the process to see how the Loft Conversion London guarantees client satisfaction from initiation to delivery.


  • Hassle-free construction with minimum noise and disturbance.
  • Dormer Loft Conversion London Doesn’t necessarily Require Planning Permission
  • No limitations to the options when it comes to style
  • This form of architecture allows you to optimize the space.
  • It also supports Installation of a Skylight
  • The vertical wall makes it easier for you to fulfill your ever needed storage space


There is no doubt that you will have to think about your house’s ceiling height when determining whether your loft is suitable for a loft conversion London. A traditional roof is about 2.2-2.4 meters high while a modern trussed roof has a minimum height of 2.4-2.6 meters. For a habitable space the preferred headroom level is 2.3 meters. This height need not be maintained over the entire floor area, and a lower height may be acceptable for a bathroom, hallway or kitchen. If your head height is lower than the above, this can be achieved by lowering underneath the floor ceilings.


  • Building up something that brings out a good return on investment and brings value to your space. Our honest, transparent credits help us add value and create an experience of a life time.
  • Try to work cost-effectively and focus more on the satisfaction of clients. With no hidden charges, our transparency policy makes us different from others.
  • By using the latest technology, and swift means of construction, we ensure to meet the potential development requirements. Quality work ensured by skilled people working with us.
  • By working on the idea that you have in mind and giving the right structure, we ensure Quality and Credibility for superior results.
  • Working hours matched with your work schedule. We work according to your work schedule and take out ways not to disturb your normal routine.

Some commonly asked Questions about Dormer Loft Conversions

Do Dormer Loft Conversions Require Planning Permission?

In many cases, dormer loft conversions in London, do not require any planning permission as long as they are within the permissible development conditions of the type of property you have. Unless your house or flat is in the conservation area then different rules will be applicable for loft conversions. You can find more information and the relevant regulations here.

How much do Loft Conversion in London Cost?

This is a bit of a tricky question to answer especially when we have not seen your property. The price is highly depending on the size of the conversion, complexity and the extra work involved such as fixtures and fittings. On record, the average cost of a standard loft conversion starts at around £30k but our experienced surveyor will first need to visit your house to discuss your requirements in detail before we can provide a definitive quote. 

Contact us if you would like to build a Dormer Loft Conversion within the London area

What should the ceiling height be for a Dormer Loft Conversion?

Ceiling heights are key in the determination whether your loft is suitable for conversion or not. A traditional roof is 2.2 to 2.4 meters high and the minimum requirement for a modern roof is 2.4 to 2.6 meters. The ideal level of headroom for any habitable space is around 2.3meters. This height is not necessarily maintained in the whole area, but a lower height may be fine for the bathroom or corridor. If your loft’s height is lower, then 2.2meters then loft conversion will be possible by lowering the ceilings of the floor underneath.

How to get natural light into a Dormer Conversion?

In a Dormer loft conversion, you can get natural light coming in from the dormer windows (vertical) and the skylights too. If you have a bigger internal space, then you can add a Juliet balcony to get more light into your loft.

What are the sizes for a Dormer Loft bedroom?

Just like any other bedroom, Dormer loft bedrooms can vary in size and shape, some are just as how the normal bedrooms size or shape would be, however some are of unusual shapes especially when the chimney is present. 


Loft conversion London has been in the industry for quite a time and has seen changes that took place over these years concerning designs of lofts. An effective loft conversion London is one definite asset for your home. It can provide additional space for effective use and add value to your home. Loft conversions create additional living rooms inside your home. These can be perfect for a new bedroom, playroom, home movie theater or bathroom. Though, a poorly converted loft can not only minimize the value of your property, but in some cases can also compromise with your security and the structural stability.

Loft conversion London has always tried to make the process smooth for the clients. With customer care 24*7  available, Loft Conversion London aims to clear ambiguity on Dormer Loft Conversion with expertise. 

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