Loft Conversion in London



A growing family means a need for a bigger house. Or if there is a necessity to add rooms, there is a need for more space for them. Those who can afford may just move to a larger house to avoid the hassle of construction.

Adding an extension of a house can be costly, since that needs construction of a new wing. For this reason, many homeowners in the UK are torn between setting aside their dream of improving their home and taking the risk of going beyond their credit line. Good thing they have the choice of loft conversion which is cheaper and easier to acquire.

Yes, loft conversion is a practical way to maximise the space in your house and add a new area for your desired purpose. Compared to moving houses or adding an extension to your abode, this is much more affordable too.

Types of loft conversion

types of loft conversion

Bigness loft conversion team is specialised in different types of loft conversion:

What are the types of loft conversion that Bigness offers? We do all kinds of loft conversion. If you have no idea which fits your house best, then check out the main loft conversion types that we specialise in:

  • Velux (Roof Light) loft conversion;
  • Dormer and l-shaped dormer loft conversion;
  • Mansard and l-shaped mansard loft conversion – All sides of the roof have double slopes. The upper slope is usually less steep than the lower one.
  • Double mansard loft conversion;
  • Hip-to-gable and l-shaped hip-to-gable loft conversion;
  • Loft conversion with full back addition;
  • Loft conversion with pod room;
  • Loft conversion with roof terrace;
  • Gabled Roof – This kind of loft conversion involves a sloping roof on two sides. The output shows a triangular wall segment at the sloped roof.
  • Gambrel – This is a two-sided roof that has two slopes on every side. The lower slope is steeper.
  • Hipped Roof – This roof has four sloped sides. The two longer sides elevate at the top.
  • Flat – This may look flat but it actually has a little slope that allows the water to flow off.
  • Catslide or Saltbox – This roof has one side which is longer.

Loft Conversion Builders in London


For loft conversion needs, Bigness is the leading name in providing quality service here in the UK. We have been providing London and nearby cities with building constructionbuilding refurbishments and property maintenance services for years. Until now, we are the trusted brand by many home and business owners when it comes to property development.

So, why are we the best?

Loft conversion planning

Typically, the company begins with initial inspection of your attic room. The loft conversion specialists will determine if it is possible to convert in the first place. Next step is planning everything like the design, style, space, etc.

Whether you like a contemporary or traditional room, Bigness can surely help you with it. Since the company knows that your home is one of your major assets, it aims to provide you with quality time with the architects on how you plan to do the loft conversion.

Loft conversion guarantee

It is guaranteed that you will get good value from any cost you wish to spend. The company’s specialists will give you its best to make the service affordable as possible without compromising high quality. It also understands how important comfort is to your home.

Bigness wants to minimize disruption during loft conversion. In contrary, it aims to maximize new opportunities not just for your home but also for you.

Seasoned Specialists

There are a lot of companies in the UK which also offer loft conversion services. However, it is always best to consult the experts to avoid waste of money and regrets.

The Bigness team is composed of experienced specialists in building construction. Bespoke loft conversion is one of our specialties, and we have the right people to accommodate our clients’ needs and wants. Only the best loft conversion professionals are allowed to work on our projects.

We have formally-trained project managers and contractors who are knowledgeable about the job. Rest assured that all throughout the project, the team working on your loft is professionally managed and supervised. Our team makes sure that everything is perfectly done because we have no room for mistakes. We value the trust and money of our clients.

Fast and Convenient Service Guaranteed

Bigness understands that our clients need to have their loft converted in the quickest time possible to minimise hassle. We know how hard it is when there is a bunch of people going in and out of your house and you cannot have complete privacy. It is also not easy dealing with the dust and mess of the construction.

For this reason, we make it a point to really finish each loft conversion project within seven to fourteen days, depending on the size of the attic and the design. We also use the latest and advanced tools that help us get the job done in a short time.

Moreover, Bigness offers off-site construction so our clients do not have to be troubled by the construction disruption. It also takes lesser time to install the new features of your loft by this means. That is why we are confident that we can finish the installation in two weeks.

The Bigness teams also takes care of everything needed to make the project possible such as producing the design and processing the permits for the structural construction.

Client-fit Designs

Bigness knows each home has a different style and need. For this reason, all our loft conversions are uniquely planned and carefully tailored to meet the demands of our clients.

In every loft conversion project, Bigness always considers what our clients want. We see to it that in the architectural planning, each detail is approved by the clients. We are only here to help them realize their dream loft design, so we guide them in the process.

We use a state-of-the-art online tool that allows our clients to see their specified design in 3D. With the help of our design architects, the homeowners can see how their new loft will look exactly. So, right from the start, our team already understands what our clients need from us.

In addition, we can install other features like furniture, staircase, or a storage area. We can also take care of the lighting and electrical concerns. That is all part of our commitment.

Competitive costs for high quality service

To ensure safety in the course of the work, only qualified and professional loft conversion specialists are allowed to perform it. You can trust that each of the company’s contractor has the required kills and knowledge to carry out the process.

Truly, loft conversion is one of the ways to boost your home’s value when properly done. It can also increase your space without necessarily building an extension.

Bigness has the best specialists on this field. Please check Bigness loft conversion reviews page. Given the competitive costs for high quality service, what will make you think twice to try it?

High Quality Service for an Affordable Price

More than earning a lot, the main motivation of the Bigness team in working in the property development field is to help ordinary people live in comfortable homes. Therefore, we set all our services at the lowest rates possible. We want our services to be accessible to all kinds of people.

Our loft conversion service is at a very competitive rate. Compared to our competitors, our services are usually 5 to 10% cheaper. How do we do this?

From the start, we have already formed connections with construction material manufacturers in and out of London. With this, we can get our materials at a cheaper price, especially since we can compare their qualities and rates. Of course, our clients have the final say when it comes to choosing the materials to use.

Nevertheless, rest assured that we only use high standard materials. We want our projects to be long-lasting so that our clients can save from repairs in the future.


A professional loft conversion does not only add a room to your house. It also increases the value of your property. If time comes that you want to sell or lease your house, you can set it at a higher price. Therefore, this is a practical investment for you and your family.

For your loft conversion concerns, why not contact us at Bigness? We are always available to answer your questions. We have consultants who can give you insights on how your living space can be improved. No need to look for other companies. Bigness has everything you need for your property development.

We cover the following locations: Central LondonEast LondonNorth LondonNorth West LondonSouth East LondonSouth LondonSouth West LondonKensingtonChelseaBuilders in KnightsbridgeNotting HillWest BromptonVirginia Water, SurreyCobham, SurreyKeston, LondonEsher, SurreyRichmond, LondonChalfont St. Giles​Radlett, HertfordshireGerrards Cross, Buckinghamshire

Loft Conversion Design and Build Projects

For more details regarding the loft conversion design and build services, please check out the rest of our website. You can also check our loft conversion design and build projects gallery below to see what we have accomplished in years.

Larger jobs will be supervised by a quality control manager who will report to you with regular updates.

Request a Free Quote Now!
Call 0207 112 5356 or email us today!

We’ll beat any quote. Bring us a written quote and we’ll match it PLUS we’ll refund you 10% of the difference.

  • Request a Free Quote

    Get in touch today to discuss our range of building and construction services. Our experienced team are always happy to help and give advice!
  • Please select the type of services required.
  • We take privacy seriously, no spam.
  • Please provide your preferred day time contact number.
  • The postcode & address should belong to the location where the work is to be carried out.
  • Please tell us about your project: (describe your job): (required)
  • Drop files here or
    Include images and files relevant to your requirement e.g. examples of work you like, quotes from previous service providers etc.
    Maximum File Size: 10MB
    Allowed file extensions: jpg, gif, png, pdf, cdr, psd, doc, docx
  • This field is for validation purposes and should be left unchanged.
Logo Accreditations

Call 0207 112 5356 For a Free Site Visit and Quote!

Get in touch today to discuss our range of building and construction services.
Our experienced team are always happy to help and give advice!