Mansard Loft Conversion in London

Loft Conversion: Mansard

Expanding into your roof with a mansard loft not only gives you an extra room (or two, or three), it increases your property’s value and — crucially — does so in a visually striking way. Seen those Instagram influencers’ beautiful attics? You can achieve that chic look too.

Mansard loft conversion: key fact

This is one way of increasing usable space in your house amongst many others, so it’s worth thinking about the finer details, to be sure you choose the best option. Get to know more about this type with our guide. You can expect:

Attractive end result
Sizeable space added
Suitable for all properties: terraced/semi-detached/detached
Mid-price point compared to other styles
Considerable amount of construction work
Typically requires planning permission/building regulations approval
Usually built at rear
Flat roof and sloping, almost straight wall (72 degrees)
Small dormer windows
Juliet balconies possible

What could you use it for? There are lots of possibilities, including:

Bedrooms: most popular choice, consider if you’d prefer one large one with a walk-in wardrobe, en-suite bathroom etc, or two smaller ones
Office: work from home in style with a dedicated room away from living areas, helping to differentiate between family time and work mode
Nursery: baby’s own haven with plenty of opportunity to grow into
Bathroom: especially important when adding sleeping sanctuaries at the top of the house, choose from a WC only, shower cubicle, or full tub

Mansard loft conversion: cost

Starting at £40,000

The question of price is an important one, of course. It can be useful to compare it to other options, so you know what will work best for you. This variety will typically cost less than a hip-to-gable or L-shaped dormer, but more than a Velux or standard dormer project. So it sits in the middle of the range.

The final amount you pay will be determined by many factors, including:

Size
Design
Windows
Finish

It’s vital to align your budget with your expectations, and that’s where the pros come in. We can explain where to save money, what you don’t want to scrimp on, and how to maximise the potential of your roof space to balance cost with quality.

Mansard roof loft conversion companies in London

Looking for a firm to complete your works to budget, on time, and to a high standard? Fittra Construction’s here to improve your home and realise your dreams. We offer:

Complimentary consultation
End-to-end project management
Full, tailored design
Building regs
Planning permission applications
Legal advice
5% deposit
Straightforward payment schedules
Buyers’ discounts
Liability insurance at £10M employer’s, £5M public/products
NHBC-registered
Accreditations: FMB, NFB, TrustMark, Considerate Constructors

Interested in Mansard conversion?

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Why Work With US

FREE CONSULTATION

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24/7 COMMUNICATION

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£10M EMPLOYER’S

liability insurance

FREE SCHEDULE

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Integrated, In-house Team Will Work On Your Project

Benefits from our trade discounts

£5M public & products liability

10% only deposit payments

Detailed cost breakdown

In the End You Will Get

A HIGH-END PRODUCT DELIVERED ON TIME AND ON BUDGET!

SEE WHAT PEOPLE ARE SAYING

Testimonials

Team at Fittra possesses all the attributes necessary to be an excellent contractor: they know their market extremely well; they are diligent, responsive, and yet very understanding with their clients. They are very professional and offer cost saving alternatives when possible. The thing that has impressed me the most is the professionalism, knowledge and helpfulness of all the workers. Hanwell, New Build

We did our house fully renovation last year July 2019 – December 2019 with Fittra. We are very pleased with the results – our new kitchen (rear extension with lantern roof light), loft conversion, hardwood flooring, underfloor heating, tiling and etc.. Ivan and his team are truly professional. They finished the job with timely manner and customer satisfaction. Their breakdown quotes are easy to understand and easy to work with. We are highly recommended for Ivan, Igor and the team. Great job!!! Isleworth

The work that Fittra did for me was a full house renovation – this did not include any new build or extension work but it did include moving a number of internal load bearing walls and extending external openings to install large sliding doors. The work was reasonably complex structurally as the upper floor is steel beam and concrete block construction. Externally all windows and doors were changed, guttering and fascias were changed and a new tiled deck constructed to give an outside/inside feel. Internally, walls were moved, new door openings created or widened to give a modern open plan look and feel. Maidenhead

Fittra completed a rear extension, loft conversion and full refurbishment of our house in Ealing late last year. This included new bathrooms, heating system (including underfloor heating), electrics and plumbing. When obtaining quotes, Fittra’s prices were in the middle of the three companies who came back to us with costs, but the fact that it was fully itemised (unlike the other costs we received) gave us piece of mind that we knew exactly what we were getting for our money. Ealing

Can’t speak highly enough of Fittra and the job they did. They completed a rear extension, side return and loft extension and pretty much a full refurbishment of our house and garden in SW London. They not only did an incredible job, but they were also great to work with too. Vadym and Ivan’s team were incredibly efficient and hardworking and really amenable and collaborative. I have recommended them to a few friends subsequently, and will continue to do so. Wandsworth

Our Projects

Twickenham Renovation: Where History Meets Modern Elegance

In the picturesque setting of Twickenham, our latest project breathes new life into a two-storey end-of-terrace house, marrying high-quality renovation with historical charm. The addition of a loft extension introduces a spacious family bedroom with an en-suite and a study enhancing the home’s functionality and appeal. The renovation encompasses a thorough overhaul of the interior, inclu...

Earls Court Transformation: Luxury Living Redefined

In Earls Court, a landmark project designed by Leufroy and Teo Architects, and built by Fittra, breathes new life into a Victorian building, converting it into three luxury apartments across 400 square meters. As the main contractor, Fittra has masterfully executed an extensive renovation, including a new basement and a rooftop terrace with exclusive amenities like a barbecue and lounge area....

Earls Court Transformation: Luxury Living

In the heart of Earl’s Court, London, a five-story edifice has been transformed through an extensive renovation, culminating in the creation of 10 exquisite studio apartments, each designed to cater for the discerning tastes of professionals. This project, characterised by its comprehensive overhaul both inside and out, showcases oak flooring, bespoke joinery, and wardrobes, maximising every in...

Slough

Modern Living Redefined in Slough's New Development On the outskirts of London, in a popular residential area of Slough, a new development project introduces a modern two-storey, five-bedroom house that redefines suburban living. This new build combines the latest in architectural design with the comforts of home, creating a perfect setting for family life. The house is designed w...

Raynes Park

Modern Makeover in Rayners Park with Loft Extension In Raynes Park, an extensive renovation transforms a detached property, introducing a modern loft extension above the garage. This project enhances the home's functionality and aesthetic appeal, blending traditional charm with contemporary design. The loft extension adds valuable living space, adaptable for various uses such as a...

West Brompton

Chelsea Charm Reimagined in West Brompton In the prestigious neighborhood of Chelsea, a two-bedroom apartment from the 1880s has been meticulously renovated, marrying its historical essence with modern elegance. Located in West Brompton, this project involved significant structural changes, the introduction of soundproofed oak flooring, and bespoke internal doors that pay homage to the a...

Chelsea

In Chelsea, a five-story building underwent an extensive renovation process to achieve high standards of sophistication and luxury. We worked alongside an investment company to create six stunning two/three-bedroom apartments that combine comfort and elegance. Throughout the apartments, oak floors were used, and bespoke joinery and wardrobes were installed, ensuring that every space was ...

Brompton

This project features a full renovation of a block of 10 studio apartments within a 5-storey building in the Brompton. Working closely with an investment management company, our goal was to create exceptional living spaces that would attract young, successful professionals. Each studio apartment was thoughtfully designed to maximise space and functionality, while incorporating stylish an...

Do you have questions?

Frequently Asked Questions

What is the difference between a dormer and a mansard?

The only difference with a mansard is that the slope across the face of the mansard will make the construction look softer from the outside. But it will sacrifice some head height compared to a dormer that is built vertical off of the back wall.

How long does it take to build a mansard roof?

For a mansard loft conversion, around six to eight weeks is a typical timeframe for the the actual building work. However, the planning stage can also take a considerable amount of time, especially if planning permission is required.

Can a mansard roof have a flat top?

The flat top of the mansard roof provides a very poor drainage system which could lead to leaks or even roof collapse. The complex design of the roof means that it takes longer for roofers to fix it, and most may not even be familiar with the design in the first place.

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02082 438568