Looking for a trusted loft conversion company in South West London?

At The Loft Room, we help homeowners unlock the hidden potential in their properties by transforming unused lofts into stunning new living spaces. Whether you’re creating a master suite, home office, guest bedroom, children’s room or self-contained studio, our expert team manages every stage of the project from design through to completion.

Based in Teddington, we specialise in South West London loft conversions including Richmond, Kingston, Twickenham, Hampton, Chessington, Teddington, New Malden, Worcester Park, Wimbledon, Sutton, Surbiton and surrounding areas across Surrey, Middlesex, Berkshire and Hampshire.

South West London is home to some of the UK’s most desirable Victorian, Edwardian and 1930s properties. These homes often have exceptional loft conversion potential, allowing families to gain valuable living space without sacrificing garden space or facing the cost and stress of moving.

Our team understands the unique character, planning considerations and structural requirements of homes across the SW, TW, KT and SM postcode areas, ensuring every conversion complements your property’s original style while adding practical living space.

Get in touch for a free no obligation quote


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Ben Chadwick profile picture
Ben Chadwick
22 August 2026
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We have just had our loft completed by the loft room. They were really easy to work with, took care of all the paperwork. They were great at communicating all the stages and their response time was excellent. Adrian was our builder and he was fantastic. Super thorough, reliable, fast, tidy and often gave us suggestions when we were unsure. The whole project was finished in about 6weeks! We wouldn’t hesitate to recommend The Loft Room to anyone. Many thanks!
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Ken O'Neill
19 August 2026
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We are so happy we decided to go ahead with The Loft Room. Everyone we met from our initial consultation with Paul to Lulian and his team and Helen and Melissa in the office have been great. We were especially impressed with the hard work of Lulian and his team even through the heatwave. They were friendly and professional and always ready to answer any questions we had. Thanks to Lulian for suggesting bigger Velux windows - they are amazing! All the trades involved were great - we will definitely use them again in the future. The work was completed on time and we are really happy with it. We would certainly recommend The Loft Room.
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jasmine zohdy
17 August 2026
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We used the loft room for our loft extension and are very pleased with the results. We were lucky enough to have Adrian and Andre build the dormer, the whole experience was excellent from start to finish. The work was completed incredibly quickly, yet the quality remained consistently high throughout. Adrian brought great ideas to the project that genuinely improved the final design, and he kept everything neat and tidy every single day. All the trades they works with — electrician, roofer, plumber and more — were equally reliable and skilled. There were no delays at any stage; each team arrived exactly when needed and kept the project moving smoothly. The administration side Helen and Mellisa was also superb, with clear updates and communication about progress and next steps. A very professional service all round.
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Amy Dobson
6 August 2026
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Off the recommendation of friends we engaged the Loftroom to refresh and extend our existing loft conversion, adding new insulation, skylights, a new shower room and additional bedroom. We have never done major work to a property before so benefited greatly from loft room supporting us start to finish with planning, designs and all the various trades needed. Our team lead Marius was excellent from start to finish. Him and his team were incredibly hard working, working quickly and to a very high standard. We were really impressed especially given they worked through multiple heat waves !!Their advise and guidance during the build was invaluable (see skylight in shower room!). We wouldn’t hesitate to recommend Marius and the wider loft room team (who were very supportive every step of the way) to anyone looking to complete a loft conversion or improve an existing one.
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Andrea Guerra
4 August 2026
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We recently completed a loft conversion with The Loft Room, adding two generous rooms, a bathroom and a proper landing, and we are delighted with the result. The new floor feels like a natural part of the house rather than an addition, and the quality of the finished space is excellent. A special mention must go to Dave, who managed the project with patience, kindness and a genuine commitment to getting things right. Building work inevitably brings challenges and changes along the way, but Dave was consistently approachable, practical and willing to find solutions. He took real pride in the work and cared about the final outcome, which made a significant difference to us. The whole team worked incredibly hard in our home, and we are very grateful for what they created. It was a major project for our family, and the additional space has genuinely transformed how we can use and enjoy the house. We would happily recommend The Loft Room and especially Dave.
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Brooke Owusu-Bempah
27 July 2026
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Getting a loft conversion done is a big decision. We were honestly quite nervous about it, especially given the investment involved and the number of horror stories you hear about building projects going wrong. Thankfully, our experience with The Loft Room was the complete opposite. From day one, the whole process was handled brilliantly. Everyone we dealt with, from the office team through to the various tradespeople who worked on our home, was professional, friendly and incredibly well organised. What impressed us most was that our loft was completed in just 9 weeks, and the quality of the workmanship never felt rushed. A special mention has to go to Ashley C. He wasn't just the team leader overseeing the project. He was the lead carpenter and the driving force behind the entire build, coordinating all of the contractors, managing the day-to-day work, and making sure everything stayed on track. More than that, he felt like a genuine partner in the project. He understood that we had a budget to work within, took the time to listen, offered great ideas to maximise the space, and always made us feel completely comfortable and informed. His communication was exceptional throughout. No question was ever too small, no concern was ever brushed aside, and he was always happy to walk us through things, sometimes more than once when we needed reassurance. Having someone like Ashley on site every day made what could have been a stressful experience feel surprisingly straightforward and enjoyable. Every contractor who came into our home was polite, respectful and highly skilled. There wasn't a single issue throughout the build, and it was obvious that everyone took pride in their work. In fact, by the end of the project, it was genuinely a little sad to see the team finish. Ashley had become such a reassuring and professional daily presence that we'll genuinely miss seeing him and the crew around. We're now at the final decorating stage and can't wait to move into and enjoy our beautiful new space. We've been talking about our experience to anyone who'll listen, recommending The Loft Room to neighbours and friends, and proudly showing people the transformation. If you're considering a loft conversion, we honestly couldn't recommend The Loft Room highly enough. They've completely exceeded our expectations in every way. 10/10 for quality, professionalism, communication and customer service. And if you're lucky enough to have Ashley C. leading your build, you'll be in extremely safe hands. He played a huge part in making our project such a success.
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Harry G
20 July 2026
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We had our loft conversion completed by The Loftroom Teddington at the start of the year, and we're absolutely delighted with the finished result. The extra space has made such a difference to our home, and the quality of the work has been excellent. A big thank you to Ash, who did a fantastic job and was always friendly, hardworking, and happy to answer any questions we had each morning (and throughout the day!). We'd also like to thank Paul, who was great from our very first interaction, as well as Melissa and Helen in the office, who kept everything running smoothly, and Rich, who regularly popped in during the build to check on progress. As with any building project, there were a few small niggles, but these were dealt with quickly, professionally, and efficiently. It was reassuring to know that the team stood by their work and were committed to making sure everything was right. Overall, we've had a really positive experience from start to finish and wouldn't hesitate to recommend The Loftroom Teddington to anyone considering a loft conversion. Thank you to the whole team!
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nick davis
17 July 2026
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Marius and his team were punctual, quick and clean and did a good job on our loft extention. Would recommend them.
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A Z
15 July 2026
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Many thanks to Paul, Melissa, Helen, Maggie and our project manager Mihai! The whole team is great, and the tradespeople they used are highly professional and do excellent work. Thank you for delivering my project right on schedule and with fantastic results.

About The Loft Room

The Loft Room is a family-run business founded and now managed by two expert carpenters with over 30 years’ experience in the industry and hundreds of bespoke loft conversions in London and the South of the UK under their belts.

Most of our work comes through recommendations, which we’re really proud of. Our customers genuinely love what we do, and we’re honoured to have received over 350 consecutive 5-star Google reviews from happy clients. That kind of consistent feedback is something you don’t see every day in our industry, and it speaks volumes about the care and standards we bring to every project.

It’s not just our customers that love our work. Our projects have also been featured in leading media publications including Luxury Lifestyle Magazine, House Beautiful, 25 Beautiful Homes, The Art of Design Magazine, and I-Build Magazine – further acknowledgment of the quality of design and expert craftsmanship that goes into our projects.

For further information about us and our loft conversion process, visit the links below:

Happy SW London customers

Customer Stories from South West London

At The Loft Room, we always strive to go above and beyond for our customers. We’re proud of the loft conversions we’ve project managed and are pleased to share a selection of our work, including some of the best loft conversions in South West London.

Why South West London homeowners choose us?

We strive to make the entire process as seamless and hassle-free as possible, from initial contact right through to the finishing touches. Our focus is to deliver a loft conversion that you truly love, suits your requirements, and adds value for years to come.

What set us apart?

  • Bespoke design approach – At the planning phase, we’ll collaborate closely with you to design layouts and storage options that suit your lifestyle, maximise space, and act as a natural extension to your home.
  • Transparent pricing – No hidden extras. Our prices are clear and set out to you before any work begins so you always know where you stand. We manage all payments through one account for clarity and simplicity.
  • We’re perfectionists – We leave no stone unturned, carrying out regular quality inspections at every stage. This ensures every detail is completed to the highest standards, while keeping your home as tidy and well-managed as possible throughout the process.
  • Outstanding customer service – A large percentage of our work comes via recommendations and returning clients, reflecting the strong relationships and trust we’ve built over the years.
  • Friendly, supportive team – Our team is available to support you at every step, offering expert guidance and quick answers whenever you need them.
  • 10-year guarantee – Invest in your home with confidence knowing our 10-year warranty fully covers the quality of our craftsmanship.

Get in touch for a free loft conversion consultation

If you’re considering a loft conversion in South West London, including Richmond, Teddington, New Malden & more, fill out our form today and we’ll be in touch asap to discuss your plans and provide a free, no-obligation quote.


How much does a loft in South West London cost?

A question often asked by homeowners is about the average cost of loft conversions in South West London. While every project is unique, loft conversions in South West London typically range from £35,000 – £100k+ depending on several factors.

Factors impacting the final cost include the type of conversion, the size and structure of your property, planning requirements, and the specification of finishes you choose. For example, a simple rooflight conversion will generally cost significantly less than a larger dormer or hip-to-gable conversion with an en-suite bathroom.

At The Loft Room, we provide clear, detailed quotations with no hidden surprises, so you’ll know exactly what’s included before any work begins. Our experienced team can guide you through the options available and help you find the most cost-effective way to maximise the space and value of your home.

Cost of a loft room in SW London

Planning permission & building regulations

Many loft conversions in South West London fall under Permitted Development Rights, meaning planning permission often isn’t required. However, requirements can vary depending on your property type, location, and whether you fall within a conservation area or article 4 direction.

Across South West London, different London borough councils such as Richmond upon Thames, Wandsworth, Kingston upon Thames, Merton, Sutton and Hounslow each have their own planning considerations and local guidance, which we take into account from the very start of your project.

Regardless of planning status, all loft conversions must fully comply with Building Regulations to ensure structural safety, fire compliance, insulation standards, and overall build quality.

We manage the entire process on your behalf, including:

  • Planning applications (if required) with your local London borough council
  • Building regulations approval and inspections
  • Party wall agreements with adjoining neighbours
  • Liaising with local planning departments throughout the project

Our experience working across South West London means we understand exactly how different councils assess loft conversions helping to streamline approvals and avoid unnecessary delays.

FAQs

Most loft conversions in SW London take between 8 and 12 weeks to complete, depending on the complexity of the project. Larger or more bespoke designs may take longer.

Many properties in South West London, including Victorian and Edwardian terraces, are well suited to rear dormer loft conversions. Semi-detached and detached homes may also benefit from hip-to-gable or L-shaped dormer conversions, depending on the roof structure.

Many loft conversions in South West London can be completed under Permitted Development rights, meaning planning permission is not usually required. However, all loft conversions must comply with Building Regulations to ensure the work is safe and structurally sound. Larger extensions, mansard loft conversions, properties in conservation areas, or listed buildings may require planning permission. During your consultation, we will advise on exactly what approvals your project will need.

In most cases, no. The majority of our clients remain in their homes throughout the construction process. We work hard to minimise disruption and keep your home clean, safe, and functional.

Yes. A loft conversion is one of the most effective ways to increase the value of a property in South West London. While every home is different, a well-designed loft conversion typically adds 10–25% to a property’s value, particularly when it creates an additional bedroom and bathroom.

In areas such as Wimbledon, Richmond, Twickenham & Teddington, where space is at a premium, loft conversions often deliver particularly strong returns. A rear dormer loft conversion that adds a master bedroom with an en-suite can be especially attractive to buyers and families looking for extra living space.

Loft Conversions London
Loft conversion areas we cover
Loft conversion areas we cover