Dormer Attic Conversions

Dormer Attic Conversions

We are loft conversion specialists and provide every type of loft conversion in the UK.

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Dormer Loft Conversion Plans

Dormer loft conversions can be a great way to add more space to your property through the loft, opening up a lot of room and giving you an entirely new part of the home to work with.

Even in its most basic form, a dormer loft conversion can lead to a major increase in living space. However, like all loft conversions, a dormer conversion can be tough to figure out at first.

Knowing the specifics of what you want and understanding the limits of dormer conversions can be important for maximizing the habitable space in your home.

Our experts can offer some excellent dormer conversion options that will turn your original roof into a brand new space, created bespoke for you as a client.

Just like any type of loft conversion work, we aim to give our customers exactly what they want, no matter how specific it might be.


What is a Dormer Loft Conversion?

Dormer loft conversions are an extension on your roof that adjusts the overall roof space and shape.

The extra space comes in the form of a brand new box-shaped structure built through your existing roof slope, effectively giving your house in a brand new space.

Dormer loft bedrooms are a common sight, but all types of dormer loft can be used for almost any project or niche.

A dormer conversion is a valuable addition to any home, offering more usable floor space to even the smallest terraced property.

Types of Dormer Loft Conversion

Dormer loft conversions can be quite varied, with certain styles fitting a particular loft space more than others. However, the dormer loft conversion that you choose really depends on your needs and what kind of space you're planning to create.

Flat Roof Dormer

Flat roof dormers are the most 'standard' option, focusing on a simple change of the roof structure to create more loft space.

Shed Dormer

Shed roof dormers are like a flat roof dormer, only the roof slopes down. Other than this, they're almost identical in most respects.

Gable Fronted or Doghouse Dormer

Gable-fronted dormer conversions (or dog house dormer conversions) extend the roof perpendicular to the original roof, creating a new gable wall extension. This places the gable dormer on the flat sides of the gable roof rather than the sloping sides.

L-Shaped Dormer

L-shaped dormer lot conversions are built over any L-shaped part of your home. This usually makes it the best new dormer loft conversion for a property that has an extension attached to the existing house.

Hip Roof Dormer

A hipped roof dormer has a sloping roof on three sides, trading some interior space for a style that fits better with a traditional roof look.

This type of loft conversion is best used if you want visual consistency above everything else.

Mansard Dormer

A mansard dormer is a rear extension with a flat roof and vertical sides, offering a huge amount of loft space.

These are suitable for a loft conversion where additional space is most important but can take a lot more time and effort to construct.

Named after the French architect Francoise Mansard, these lofts are some of the largest that any home can get.

However, they're also very complex and require a structural engineer to properly plan out.

Pros and Cons of a Dormer Loft Conversion

A dormer loft conversion can be a great addition to any home, but knowing the basic pros and cons helps you understand what most dormer loft conversions can and cannot do. The more prepared you are for the finished loft conversion, the better.


  • Dormer loft conversions add a lot of additional living space that can be used however you prefer - including as a master bedroom suite.
  • A roof dormer adds more natural lighting to your attic, thanks to the new roof windows.
  • Dormer windows open up nicer views.
  • All dormer loft conversions can lead to improved architecture, greater curb appeal, and higher home value.
  • An L-shaped dormer can help provide more space in parts of the home that have been left unused, such as areas above extensions.
  • A loft conversion is very versatile and can be used for almost any purpose.
  • A dormer can get natural light, natural airflow and provide a nice space for day-to-day routines.


  • Dormers often require planning permission, with complex dormer lifts needing higher levels of planning permission.
  • Larger dormer lofts can cost quite a lot more to create.
  • Even a simple flat roof dormer takes a lot of effort and labour to construct.
  • Dormer lofts need a lot of structural work, especially if they're being built to replace an existing poorly-converted loft.
  • The type of dormer loft conversion you get will heavily depend on your home's design, so some loft conversion options will be easier on your home than others.

Best Dormer Loft Conversion Company in

We offer a wide range of loft conversion options that are all suitable for the modern home, whether you want a major dormer conversion on Victorian terraced houses or a simple dormer window design on your detached house.

We have worked with countless clients in the past and have been able to provide the ideal loft conversion options for each of our customers.

All of our work is handled bespoke and tailored to their needs, no matter how specific or niche the end result might be.

All of our dormer loft conversion work is done to the highest possible standard of quality, and we aim to be the best in our field with every project that we take on. Even the smallest conversions get a lot of planning, attention, and care.

Dormer Loft Conversion Cost

How much does a dormer loft conversion cost? This all depends on the conversion itself and how it's constructed, as well as the legal details involved.

The average dormer loft bedroom can cost anywhere between £30,000 to £60,000, depending on the scale of the work being done.

Certain loft options reduce this cost significantly, and each project is unique, so every single conversion needs its own price estimates.

Dormers and Building Regulations in

Following planning permission and building regulations is important to creating any loft conversion.

We will always make sure to secure relevant planning permission before starting a project, even if that planning permission involves multiple major checks.

Not all lofts require planning permission: small changes, such as adding windows to a semi-detached house loft, can fall under permitted development.

Permitted development allows many non-intrusive projects to be completed without planning permission.


Frequently Asked Questions

Do you need planning permission for a dormer loft conversion?

Not all loft conversions need planning permission, but only if they make minimal changes to your home.

Things like modifying a roof slope into a flat roof or creating walls can require planning permission, but adding a window might not.

Remember that there can also be arrangements that require your neighbours to sign off on the plans too, like the Party Wall agreement. Being in a conservation area or listed building can also limit your options.

Is a dormer loft conversion worth it?

A dormer loft conversion can be invaluable, opening up more space in any property. Even a semi-detached property can end up with a new en-suite bathroom or even a dormer loft bedroom with its own separate bathroom space.

Whatever you use the loft for, it offers far more space without needing to actually extend your home, making efficient use of space that would otherwise just go ignored.

Can I put a dormer in my roof?

Dormers fit into almost any roof type, no matter what kind of pitched roof angle you have. The only differences will be in the planning: an older semi-detached house with a pitched roof might need different design elements to a modern trussed roof house.

Whether you have flat roofs or your roofs slope, even things like roof trusses can be worked around.

Does a dormer add value?

Dormers can add significant value to your home, whether it's a simple modern house or one of many Victorian terraced properties. The only time a dormer doesn't add value is if something goes wrong with the installation, but our experts won't let that happen.

How long does a dormer loft conversion take?

The exact time it takes to construct a dormer loft conversion varies heavily between individual projects, so there isn't a single defined answer. It all depends on the complexity of the project and what kind of specifics are involved.

Our experts can give you a roughly accurate prediction of how long the work will take, but delays are also an occasional problem if certain materials can't be sourced easily. In most cases, a conversion will take between eight and ten weeks.

Is my home suitable for a dormer loft conversion?

Whether you have an older home with a simple pitched roof or an ultra-modern property that uses the latest design elements, a dormer is almost always an option. The only exceptions would be in cases where the roof doesn't even allow for a loft, like a flat-roofed building.

A dormer loft is often as simple as adding vertical walls to part of the roof to create a new room, making it a very versatile and adaptable option. Even if one design won't work for your home, another likely will.

Get in Touch

If you want to know more about the loft conversion options we can offer in and the kind of work that we can do, then contact us directly and get in touch. We can create countless different loft designs to work with any kind of client, and our experts will find the perfect loft option for you.



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