Our specialist team provides a complete service, managing every stage of your loft conversion project from structural preparation through to final decoration.
Whether you are considering a dormer loft conversion in Richmond, a hip-to-gable conversion in Harrow, or a Velux loft conversion elsewhere in West London, we have the expertise to design and deliver a space that enhances your home and increases its value.
As an established loft conversion company, we handle:
• Planning permission and permitted development guidance
• Structural alterations and roof modifications
• Carpentry and joinery
• Electrical and plumbing installation
• Heating and fire safety insulation
• Internal finishes and decoration
Our goal is simple: to create high-quality loft conversions that maximise space, light and long-term comfort.
Bespoke Loft Conversions
With years of experience working on properties throughout Richmond, Harrow and wider West London, our loft conversion specialists understand local property styles, planning considerations and structural variations.
We design every loft conversion to:
• Maximise natural light using rooflights where appropriate
• Improve insulation and energy efficiency
• Maintain practical storage through accessible eaves space
• Integrate permanent or moveable stair solutions
• Complement the existing character of your home
From Victorian terraces in Richmond to detached properties in Harrow, our loft conversion company delivers tailored solutions with minimal disruption and efficient turnaround times.
Types of Loft Conversions We Offer
As a specialist loft conversion company operating across West London, we offer a wide range of conversion styles to suit different property types and requirements.
The dormer design is the most popular style that our loft conversion specialists install. As a box- shaped structure built into a pitched roof, the dormer creates more headspace and extends the floorspace. Usually installed on the side or rear end of the roof, this style allows for the option of a Juliet balcony. Unlike Mansard loft conversions, most dormer styles won’t require planning permission.
With this style of loft conversion, you may not need planning permission as it is likely to be a permitted development too. Although similar to a dormer style conversion, a hip-to-gable seamlessly blends into the original structure of your home with maximum headspace. This installation is perfect for both semi-detached and fully detached properties.
A Side Dormer is the same shape as a Rear Dormer but is situated on the side of the property. If your house is detached, you may have the option of having two side dormers. Side Dormers usually have flat roofs but, dependent on the local planning policies, may have pitched or crown roofs.
A Rear Dormer loft conversion is an extension to the existing roof creating additional floor space and head height. A Rear Dormer has square, vertical sides and most commonly a flat roof. Dependent on the size and type of the property and the planning constraints attached to it, a Rear Dormer can either be built stepped in from each side by approximately 300mm or built to the full width of the building.
A Piggyback loft conversion is formed by raising the existing perimeter walls in brickwork and pitching a new roof, which is stepped back from the front elevation of the property. By raising the brickwork and pitching a new roof a vast amount of head height is gained, as well as more living space. Typically, these kind of loft conversions can facilitate two bedrooms and a bathroom.
We would recommend a Mansard loft conversion if you are looking to expand the rear of your home. This installation will maximise your loft space by pitching the roof at a 72-degree angle. This allows you to increase your attic space by up to 70%. In effect, this style of conversion adds an additional storey to your property, which explains why it is the most complex of the three designs we have available.
Although this installation may require planning permission, our combined building, construction and roofing company can help you with consent by dealing with local authority departments in your area, on your behalf.
An L-Shape Dormer is of similar construction to a Rear Dormer with an additional back addition outrigger at the rear of the property. This usually extends over an existing first floor bathroom or bedroom. This type of loft conversion is not possible on all types of properties but is commonly found on those of the Victorian and Edwardian era. The back addition outrigger adds a vast amount of living space to the loft conversion with either the same head height as the main dormer or a slightly reduced head height due to local planning policies.
Velux loft conversions tend to be the most affordable, as they do not require roof or house alterations and planning permission is not usually required. In this type of conversion, Velux windows are added to increase the amount of natural light and brighten the loft area.
The aim of this conversion is to design a liveable space in your loft area which seems brighter and visually larger, making the most of the existing headroom. It is the easiest and cheapest option if you want to convert your loft into a liveable space, but there needs to be enough existing head height for this to be viable. Velux loft conversions are suitable for many types of property and, as the work can be completed quickly, it minimises the inconvenience of works taking place at your home.
Avoid Moving Costs
A loft conversion allows you to expand your living space without the significant expense of moving house. For homeowners in Richmond, Harrow and West London, this can mean avoiding stamp duty, legal fees and removal costs.
Increase Property Value
Well-designed loft conversions can substantially increase property value. Adding an additional bedroom and bathroom makes homes in West London more attractive to buyers.
Create Additional Living Space
Loft conversions provide flexible space for bedrooms, home offices, playrooms or guest accommodation. As an experienced loft conversion company, we design each project around your specific needs.
Improve Energy Efficiency
Modern loft conversions incorporate high-performance insulation, helping regulate internal temperatures throughout the year. Many clients across Harrow and Richmond notice improved heat retention after completion.
If you are considering loft conversions in Richmond, Harrow or anywhere in West London, speak to our experienced loft conversion company today.
From initial consultation and design to completion, National Roofing delivers professional, well-managed loft conversions tailored to your property and lifestyle.
Contact us today to arrange your consultation and take the first step towards transforming your home.
<p>A lot of people think that you need an extra large loft with lots of space to have a loft conversion however this is a myth. 90% of conventional lofts can be converted into fantastic space to add value to your home.</p>
<p>This depends on the size of your property and the complexity of the design, but we can typically finish a job in 9-12 weeks for most standard properties</p>
<p>We do everything that we can to ensure that the work does not impact your day to day life too much. However, considering it is such a large piece of work, it is likely to have some impact impact.</p>
<p>Almost any loft can be converted, but not always. There are some cases where a loft may need major work before it can be converted, usually if it contains vital water tanks and chimney stacks that have to be moved or removed. We can inspect your loft to figure out how suitable it might be for a conversion project, taking into account details like the floor structure, head height and vertical wall strength. If you’re in a listed building, an area of outstanding natural beauty or a conservation area, then you may not be able to make major changes easily.</p>
<p>Loft conversion projects tend to add at least 20% additional value to a house’s total worth, although this varies heavily based on the type of conversion done.</p>
<p>We are lucky that our many happy clients are thrilled to show people around their new space. We will always try to arrange a visit to a home with a similar loft conversion to that of your requirements. Our gallery also shows a variety of our complete loft conversions.</p>
<p>Yes, all National Roofing Loft Conversions, upon completion, come with our 10-year guarantee for peace of mind with the Building Control, electrical/gas certificates (if required).</p>
