Loft Conversions in London

Outgrown your space or keen to add lasting value to your home? A London loft conversion can give you the extra living space you need and save you the hassle and expense of moving. It can also significantly improve your home’s saleability.

How Does Our London Loft Conversion Service Work

If you have an idea of any scale; from a tiny, small loft conversion to an ambitious full semi-detached house loft conversion or detached house loft conversion, we can help. Over the years, Red Box has increasingly become the loft conversion company London residents have turned to for guidance. 

Our team has a wealth of experience gained through a range of projects. We’ve worked with residents like you to achieve their London loft conversion dreams – from creating countless home office spaces to adding new spacious bedrooms.

Converted loft in South West London

Initial Quotation

We start all loft conversion projects with a visit to your property to gain a detailed understanding of your project. We will ask you about your ideas, needs, budgets & timeframe. We transparently price every job so you don’t have any surprises along the way.

Loft Conversion Design

As one of the best loft conversion specialists London has to offer, we can help with the design process in a number of ways. If you already have an architect in place, we can work hand in hand with them. If not, we can help you with the design work ourselves. We can even draw up your ideas and provide any required CAD drawings and help if planning permission is required.

Pre-Conversion Survey

Most reputable loft conversion companies in London will want to undertake a survey for large or complex conversion projects. They will probably involve an architect too. Simpler projects might not require expert input, but still need careful planning. As one of the best loft conversion companies in London, we are always available to provide wholly independent advice however you are approaching the job.

Loft Specialists In London

As a loft conversion company in London with 17+ years experience, Red Box has worked in all property types creating new bedrooms, bathrooms, playrooms, studies and home offices. We have created extra storage space (sloped ceilings are perfect for storing books) and given children space to play too. Your only decision is how you want to take advantage of the extra space.

So, if you’re browsing for “loft conversion specialists near me,” look no further! Whatever style is best for your property – roof light, dormer, hip-to-gable or mansard – as a trusted company, our builders will ensure you get a finished product that is right for the style of your home and within your budget.

We also specialise in home repairs, bespoke extensions and other building projects – take a look at our gallery for some inspiring examples.

Loft Conversion

Different Loft Conversion Types

There are four main project types – roof light, dormer, hip-to-gable and Mansard. The best style for your home will depend on the type and age of your house as well as your budget. As a specialist, we have worked with every kind of loft extension London homeowners have thrown at us.

It is important to note that many projects are covered by permitted development rights and won’t need planning permission unless you live in specific areas. This means most small loft conversions, office spaces and bathroom conversions in London are relatively straightforward. A larger Mansard conversion, however, will nearly always requires planning consent as they change the roof shape and structure. However you wish to proceed, we always recommend getting professional advice. Mistakes can prove costly.

Roof Light Conversion

What Is A Roof Light Conversion?

Rooflight loft conversions (also known as Skylight or Velux) are, perhaps, the simplest type of project for most homeowners. They don’t involve changes to the shape and pitch of the roof. Redbox has a proven track record of managing roof light conversion projects of all shapes and sizes. Just ask us for a quote.

Rooflight loft conversions simply require skylight windows, a proper floor and a staircase to make the room more accessible. As a result, the cost of a roof light conversion tends to be less than for an equivalent dormer, mansard or hip-to-gable project. If you are considering expanding you home by converting loft space, this might be the answer.

What Is A Hip-To-Gable Conversion?

Hip-to-gable projects are only suitable for semi-detached and detached houses as they need a free sloping side roof. They work by extending the sloping ‘hip’ roof outwards to create a new vertical ‘gable’ wall. This creates valuable extra space for a bedroom, bathroom or home office.

A hip-to-gable project cost is typically higher than for other terraced, detached and semi-detached options as it involves changing the roofline. If you have a detached house with sloping roofs at either end, you have the option of a double hip-to-gable extension.

Hip To Gable Conversion
Dormer Conversion

What is a Dormer Conversion?

You see a lot of Dormer loft conversions in London. They are recognisable as the box shaped structure added onto a pitched roof. The conversion creates interior walls that sit at a 90 degree angle to the floor. This helps to expand not only your headspace, but floorspace too.

It is worth considering a dormer if you have a pitched roof. They are often popular because they create new headspace. Dormers are perfect for lofts that are just that little bit too small.

What Is A Mansard Conversion?

A Mansard extension is the most dramatic and space-making option. This style extension runs the whole length of your home’s roof and features a flat roof, with the back wall sloping inwards at an angle of 72 degrees. Windows are usually fitted within small dormers which extend from the roof to project light into the new space.

Investing in mansard loft conversion in London typically appeal to homeowners who want, in effect, to have an extra floor without the hassle of moving. It can add considerable value to a property too. A Mansard extension can be added to the property’s rear or front if permission allows too.

mansard conversion

Loft Conversions in South London & Beyond

We are based in Fulham with satisfied clients across South London Our track record, however, extends across London and the South West. It includes everything from ambitious Mansard loft conversions in North London to tiny bijou bedroom loft conversions in West London too. Geography is rarely an issue. If you are looking for help with a loft conversion project, do not hesitate to contact us.

How Much Does A Loft Conversion Cost?

The first questions a client will ask Red Box are always about loft conversion prices. They depend on many factors, from the type of extension you want, to where you live and whether you need planning permission.

The average price of a basic project may cost £20,000-£30,000, however, the final cost will be influenced by the age and style of the property and the type of work you want. On the upper scale, a full double Mansard or dormer conversion, for example, will maximise your upstairs space but will cost more.

Many homeowners across South West London have trusted Red Box to quote for loft conversion work in their homes. Contact us to arrange a visit and we could do the same for you.

Frequently Asked Questions

We have done countless loft conversions in London and have a wealth of knowledge and experience. We have collated some FAQS below.

A nationwide study recently found that adding an extra bedroom and en-suite bathroom through a loft conversion might add an average of 21 per cent to the value of a property. In London, according to another study, the increase could reach 24.5 per cent.

Most conversions will not need planning permission. You will, however, need permission if the converted space exceeds 40 cubic metres for terraced houses and 50 cubic metres for detached and semi-detached houses. Extensions beyond the plane of the existing roof slope, higher than the existing roof or using different materials might need permission. Homes in areas, including National Parks or Areas of Outstanding Natural Beauty (AONB), might need separate permissions to convert their loft space. Building Regulations will need to be considered too.

Not necessarily. Large or complex conversion projects undoubtedly benefit from an architect, but simpler projects might not require expert input. Depending on your level of confidence, you can undertake the work yourself. Either way, start by contacting Red Box and we can provide wholly independent advice.

The average loft conversion takes between 4 and 8 weeks, however, the actual duration will vary depending on a range of factors including your design and ambitions. We can discuss schedules when we give you a quote.

Why Choose Red Box

We specialise in home improvements, extensions, kitchen fitting and bathrooms as well as the associated services of plumbing, electrical and full decoration work.

Our team work closely with architects and designers, either engaged by us or which you may have already engaged. We are happy to follow your design or work with you on a design to fit your budget and taste.

We’d love to hear from you!

For any questions please fill out the quick form on the right to drop us an email and we will be in touch.

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House Extensions

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