Dormer Loft Conversions in London

We’re a London-based design and build company specialising in loft conversions, basement conversions, and home extensions. We transform unused spaces into beautiful rooms you’ll never want to leave.

The dormer loft conversion is one of the most common types. It involves extending the existing roof to create additional headroom and floor space. A dormer is usually built at the rear or side of the property, and it can be designed in various styles, from flat-roofed to gabled or hipped.

Advantages

  • Adds a significant amount of space, ideal for a bedroom or office.
  • Provides good headroom throughout the room.
  • Usually doesn’t require planning permission, making it a straightforward option.

Best suited for

  • Terraced or semi-detached homes with limited loft space.

Why choose us?

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House Extension Types

There are several types of dormer loft conversions, each offering different looks and levels of space. Here are a few common options:

L-Shaped Dormer

Two dormers joined at a right angle - one on the main rear roof and one over the rear outrigger. It creates the largest amount of space of any dormer type and is typical of Victorian and Edwardian terraced houses.

Flat Roof Dormer

This is the most common type of dormer loft conversion. It involves adding a flat-roofed extension to the rear or side of your home, creating a large, box-shaped room. It is practical, provides lots of additional space, and is generally the most cost-effective option.

Gable Front Dormer

Also known as a gabled dormer, this type has a pointed roof that matches the existing roofline of the house. Gable dormers tend to have more visual appeal and can add a traditional look to your home, though they may cost a bit more than flat-roof options.

Hip Roof Dormer

A hip roof dormer is similar to a gable dormer, but instead of a triangular gable, the roof slopes on all three sides. This style is popular in homes with a hipped roof and blends in seamlessly with the existing structure.

Shed Dormer

A shed dormer has a single sloping roof, often set at a shallower angle than the rest of the house. It is a good option for those looking for extra headroom, and it is frequently used for homes with a higher roof pitch.

Our initial visit and quotes are free, so if you have a space you’d like to see transformed, simply contact us.

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Trusted by homeowners across the UK

Lindsey Woodward profile picture
Lindsey Woodward
2 weeks ago
Fantastic attic conversion with SimplyEasy. Our project manager Ben was amazing throughout the whole process. We were kept informed on every detail at every stage. The work was carried out really fast and finished on time. Highly recommend for any work you need on your home!!!
Logan Max profile picture
Logan Max
2 months ago
SimplyEasy Refurbs provided a fantastic bespoke design for our project – they really listened to what we wanted, came up with clever, space‑saving ideas, and delivered a finished result that feels perfectly tailored to our home
Kevin Lieng profile picture
Kevin Lieng
3 months ago
We recently had our loft converted and are absolutely delighted with the result. From the very first meeting with Seb, who took the time to explain all the options and answer our questions, we felt confident we had chosen the right company. He was knowledgeable, professional, and never made us feel pressured at any stage.
Throughout the project, Marius was our project manager. He kept everything running smoothly, communicated clearly, and ensured the work was completed to a very high standard. Marius’s team was very good, hardworking, and clearly took pride in their work, which really showed in the final finish.
The workmanship throughout was outstanding, and the finished loft has completely transformed our home. The attention to detail, quality of finish, and professionalism shown throughout the project exceeded our expectations.
A big thank you to Seb, Marius, and the entire team for delivering such a fantastic loft conversion. We would highly recommend this company to anyone looking to add valuable space and improve their home
Robert Baylay-Bell profile picture
Robert Baylay-Bell
4 months ago
I initially came across Simply Easy Refurbs (SER) online and followed their work for some time before my project reached the right stage. When I was ready to proceed, they were one of three companies I invited to quote.

From the outset, SER stood out for their efficiency, professionalism and clear understanding of the brief. As part of my due diligence, I spoke with three of their previous clients, all of whom gave strong, consistent feedback. This gave me the confidence to appoint them for a full refurbishment, including a loft conversion and rear extension.

Throughout the project, SER maintained a high standard of professionalism. Communication was consistent, with regular check-ins to ensure everything remained on track and aligned with expectations.

I would not hesitate to recommend Simply Easy Refurbs to anyone considering a full home refurbishment.
Katrina Gimbrere profile picture
Katrina Gimbrere
5 months ago
We used Simple Easy Refurbs to do our loft conversion and are very happy with the service. They used highly skilled builders and helped us resolve any issues that did crop up. They communicated well and I would recommend them to anyone looking to convert their loft.
Vanessa Pinnock profile picture
Vanessa Pinnock
5 months ago
Brilliant execution
We had a very good experience with Simply Easy Refurbs, the communication was always on point whether email, what's app or telephone. The dedicated what's app group is a great platform to check on the progress, share ideas visually etc. We had a good working relationship with all the team but especially with Tomas, our design was executed to a very high standard. All the works carried out was highly professional, done to a high standard and good quality materials were used. All the tradesmen involved worked exceptionally hard sometimes staying later than expected just to get the job done!
We're very happy with the end result. We have a future proof, modern design and the loft conversion has created so much space! We would highly recommend this firm for renovation projects! Thanks again to Seb, Tomas and the team.
Nick Hodgson profile picture
Nick Hodgson
1 year ago
We had a great experience with Sebastian and his team. Our mansard loft conversion has added a whole new floor to our flat and provided an amazing new bedroom for our daughter. Our builder Loren and his team were excellent - the work was done on time and to cost; any issues were swiftly dealt with. As expected, we had to get a fire sprinkler system installed - with hindsight we could have started shopping around for a company to do it before building control confirmed it would be necessary; but we were lucky - we found a company who could do it quickly and that meant there was no delay to our project. The aftercare has been fabulous - only today their electrician came back to move a fan in the new bathroom ceiling that was in the way of our new cupboard doors. We couldn’t have asked for more from SimplyEasy Refurbs: we’d recommend them 100%.
Valerie Bourdieu profile picture
Valerie Bourdieu
1 year ago
I had a very specific idea for my loft and the team made it happen. Great advice, great quality work. I had so many positive comments from friends and relatives. Also, I recently put my house on the market and viewers loved the loft, I have no doubt that the loft helped my house sell faster. Plus, you pay for what you signed for, no hidden fees, furthermore timing was again to what was agreed! I would have no hesitation to recommend SimplyEasy Refurbs!
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Recent Dormer Projects

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Dormer Loft Conversion In Tooting

This newly completed dormer loft conversion in Tooting had the finishes kept deliberately neutral and minimal, to maximise the feeling of space and light. This project created space for a new bedroom and ensuite bathroom.

Dormer Loft Conversion In Norbury

This recently completed dormer loft conversion in Norbury created a wonderful amount of space for the homeowners. Not only were we able to design and build a new primary bedroom, but also a small office, walk in wardrobe with built in storage, and an ensuite bathroom. The Juliet balcony is a lovely touch too.

Dormer Loft Conversion In Wandsworth

This recently competed dormer loft conversion in Wandsworth was on an end terrace building. This project unlocked space for a new bedroom for the growing family, a bathroom, some built in storage, and a little nook to sit and rest.

Dormer Loft Conversion In Catford

A lovely light-filled dormer loft conversion in Catford, South London. The family wanted more space flexibility, creating an office, a bedroom-slash-workspace, and a spacious bathroom.

Dormer Loft Extension In Carlshalton

A bright dormer loft extension in Carshalton, proving that you don’t need all the space in the world to add value to your home. This compact loft conversion unlocked space for a nursery room that can double as an extra bedroom.

Dormer Loft Conversion In Beckenham

A classic dormer loft conversion in Beckenham, London. The space was given over entirely to a spacious primary bedroom with built in storage and Juliette balcony, with a full sized en suite bathroom.

Dormer Loft Conversion In Battersea

A dormer loft conversion in Battersea, London. Featuring a new and enviably sized kitchen, leading onto a new sunny roof terrace, and a brand new bathroom too downstairs.

Dormer Loft Extension In Walthamstow

A dormer loft extension in Walthamstow, North London. This project unlocked space for a bright and warm primary bedroom, with a stylish and roomy shower room ensuite.

Dormer Loft Extension In Putney

This dormer loft extension in Putney unlocked a bright and sunny bedroom with built in wardrobes and an ensuite bathroom. The family loved the area and didn’t want to move, but needed more space. This was the perfect solution.

View All Projects


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Dormer Loft Conversions

What is a Dormer Loft Conversion?

The cost of loft conversions usually ranges from £20,000 to £40,000 for small to medium homes. Medium to large houses can expect prices between £30,000 and £60,000, while larger or complex attic conversions might cost upwards of £100,000.

Several factors affect the price, including the type of conversion you choose such as a dormer loft conversion, mansard loft, or l-shaped design. Materials, design complexity, and the size of your loft space also play a major role. We always offer a free survey and a fixed-price free quote to give you full clarity before you begin your project.

How much do Dormer loft conversions cost on average?

The cost of loft conversions usually ranges from £20,000 to £40,000 for small to medium homes. Medium to large houses can expect prices between £30,000 and £60,000, while larger or complex attic conversions might cost upwards of £100,000.

Several factors affect the price, including the type of conversion you choose such as a dormer loft conversion, mansard loft, or l-shaped design. Materials, design complexity, and the size of your loft space also play a major role. We always offer a free survey and a fixed-price free quote to give you full clarity before you begin your project.

How long does a a Dormer Loft Conversion Take?

The cost of loft conversions usually ranges from £20,000 to £40,000 for small to medium homes. Medium to large houses can expect prices between £30,000 and £60,000, while larger or complex attic conversions might cost upwards of £100,000.

Several factors affect the price, including the type of conversion you choose such as a dormer loft conversion, mansard loft, or l-shaped design. Materials, design complexity, and the size of your loft space also play a major role. We always offer a free survey and a fixed-price free quote to give you full clarity before you begin your project.

Do I need planning permission for a dormer loft conversion?

The cost of loft conversions usually ranges from £20,000 to £40,000 for small to medium homes. Medium to large houses can expect prices between £30,000 and £60,000, while larger or complex attic conversions might cost upwards of £100,000.

Several factors affect the price, including the type of conversion you choose such as a dormer loft conversion, mansard loft, or l-shaped design. Materials, design complexity, and the size of your loft space also play a major role. We always offer a free survey and a fixed-price free quote to give you full clarity before you begin your project.

Dormer vs Mansard - Which is right for you?

The cost of loft conversions usually ranges from £20,000 to £40,000 for small to medium homes. Medium to large houses can expect prices between £30,000 and £60,000, while larger or complex attic conversions might cost upwards of £100,000.

Several factors affect the price, including the type of conversion you choose such as a dormer loft conversion, mansard loft, or l-shaped design. Materials, design complexity, and the size of your loft space also play a major role. We always offer a free survey and a fixed-price free quote to give you full clarity before you begin your project.

Dormer Loft Conversion vs Velux Loft Conversion

The cost of loft conversions usually ranges from £20,000 to £40,000 for small to medium homes. Medium to large houses can expect prices between £30,000 and £60,000, while larger or complex attic conversions might cost upwards of £100,000.

Several factors affect the price, including the type of conversion you choose such as a dormer loft conversion, mansard loft, or l-shaped design. Materials, design complexity, and the size of your loft space also play a major role. We always offer a free survey and a fixed-price free quote to give you full clarity before you begin your project.

Enhance Your Home with a Dormer Loft Conversion

To learn more about the benefits of loft conversions or to discuss your property in more detail, talk to our experienced SimplyEasy Refurbs team today.

We’re a member of the Federation of Master Builders, and offer free quotes and price matching on all projects.

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