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:
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:
End-to-end project management
Full, tailored design
Planning permission applications
Straightforward payment schedules
Liability insurance at £10M employer’s, £5M public/products
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.Read More
“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. “Read More
“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.”
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.
“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!!!”
This beautiful renovation features a bespoke wooden staircase with low level wall lights, designed by the client. They match the cedar fencing in the garden, which also has matching storage cupboards and a special pizza-making area. A naturally lit home office sits on the top floor, designed with a touch of minimalism, similar to the […]
The client on this project is a designer and a project manager, so working together produced very unique and exciting results. Many of the refurbishment’s features were designed by the client, such as the artistic wallpaper and the bespoke joinery package, which was implemented by our experienced joiner. The client was inspired by certain ideas […]
The property was completely rebranded with organic and rustic designs, infiltrated with contemporary features. A full refurbishment, rear extension and L-shaped dormer transformed this house. All the natural light you can see in the rear extension is thanks to the floor-to-ceiling sliding doors and aluminium skylights. As for comfort, there are walk in showers, wet underfloor […]
This refurbishment project was absolutely thrilling to accomplish, with a solid team of interior designers and a delightful, intelligible client. Although the 1980s house was structurally complex, with heavy concrete planks in the original structure, as opposed to traditional wood, our team managed to support the existing structures and integrate new features to modernise the […]
This classic 1960s house in the London Borough of Richmond-upon-Thames required modernisation through a complete renovation.We worked closely with the client to create a new contemporary space that gave the residents more space and improved facilities while seamlessly blended in with the local area.
This project focused on renovating the terraced house by adding a rear extension and converting the loft. Two large skylights were installed to brighten up the living area and a new bedroom with en-suite shower created on the top floor. The extension added space to the side and rear of the property; this allowed for […]
The client chose us for this Wandsworth property to complete a house renovation, an L-shape dormer loft conversion as well as a wraparound ground floor extension. Open plan kitchen was created to maximise the living space and modern design gave it a gorgeous look. Our team added new sky lights over the kitchen island to […]
We provided design, engineering, construction and project management on this exciting renovation in the London Borough of Wandsworth. The project consisted of a two-storey extension, a brand new, bespoke open plan kitchen; new windows throughout, a new bathroom, stairway, complete plumbing and electrical, and enhanced lighting throughout and a rear-facing bay window.
We completed this substantial and ambitious new build in march 2019. With a large rear garden and extensive parking, the home makes perfect use of its natural space. A bespoke kitchen, with direct access to the garden, is one of the home’s standout features, as are the luxury bathrooms. The first floor features three spacious […]
This project includes a spectacular kitchen installation with a new dining and living area, which is as modern as it is welcoming in its design. We paid close attention to the layout to achieve a spacious, crisp and immaculate area. During the heat of lockdown, the client expressed concerns over staying safe from COVID-19, so […]
The client decided on full renovation of this detached bungalow. Our team built a rear extension with lantern roof light and converted the attic into the living space. They also added 2 new bathrooms to the property, installed underfloor heating throughout the house, changed the entire plumbing and rewired all electric systems. During the final […]
We recently completed the full refurbishment of this stunning home in Acton, West London. The extensive project included a brand new open plan kitchen with natural light coming from a huge bespokely designed skylight. The project also included a new loft dormer, a completely new roof, two bathrooms, brand new electrics and a state-of-the-art […]
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.
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.
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.