Maximise your attic with an L-shaped (or “dog leg”) dormer. Perfect for certain types of properties, this loft conversion gives you two sections at right angles, joining at the corner. With all this extra space, you can finally have that guest room, master bedroom, en-suite and walk-in wardrobe you’ve always dreamed of.
What house styles can have an L-shaped loft conversion?
Terraced and semi-detached properties from the Victorian period are most suitable for this project, when they have:
Keep to certain guidelines and you won’t need planning permission for your expansion, as it’ll come under Permitted Development. These currently include:
No more than 50m³ added (detached/semi), 40m³ (terraces)
Not in conservation district
Not a listed building
No balcony (Juliet allowed)
No materials that aren’t in keeping with original structure
The part facing neighbours might require permission. The company carrying out the work should take into consideration all of these factors.
There are also Building Regulations that your construction firm needs to adhere to. Areas that need to be approved/certified include:
Headroom (2m height usually required)
Stability of structure
Glass/windows/balconies and flashings
L-shaped dormer loft conversion cost
It’s one of the most expensive ways to extend your home, but don’t let that put you off. An L-shaped dormer loft conversion price is high because it adds so much floorspace with usable headroom alongside — almost as much as your existing first floor.
The cost is about £15K more than a standard one, but given that you get another part for an additional room, it’s an investment well worth making. It’ll enlarge your liveable areas significantly, and increase the value of your property should you sell in the future.
Timeframes are longer, naturally, with an average of 7-10 weeks. So it’s understandable that the cost is higher in line with extended labour plus extra materials.
Why choose Fittra?
With 10 years experience we offer an end-to-end service, encompassing:
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 majority of L-shaped dormer loft conversions do not require planning permission as they usually fall within the 40/50 cubic metres which is allowed under UK Permitted Development rules
Structural integrity is key in any loft conversion. Steel beams are the most commonly used within loft conversions, particularly as they offer more flexibility in terms of structure.
An L-shaped dormer conversion is where two dormer builds are constructed in a way that they join together. Usually one dormer will be built on the rear outrigger roof and the other on the main roof, which is what gives it the instantly recognisable L-shape.