Loft Conversion Companies in Muswell Hill

Name: Loft Conversion Company
Brand: MyBuilder
SKU: loft-conversion-company
Rating: 4.6 (9 reviews)

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Some of our top rated loft conversion companies in Muswell Hill

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Future Shapes
Rating: 4.9 out of 5
Loft Conversion Company in Muswell Hill
We are a company who believe in building an outstanding relationship with each and every one of our clients. We pride ourselves on achieving impeccable standards of work, earning trust with our clients through our friendly, reliable, thorough and clean work. We now have an exceptional reputation for delivering fantastic results and over-delivering on expectations with our clients.
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Latest review:
Restoration & Refurbishment- 31 Aug 2020
It was a pleasure dealing with Peter and his team from start to finish and we couldn’t be happier with the work that they did. I was impressed with Peter’s previous work and we developed a good rapport from the first meeting and I felt that I could trust him with the work. He was clear about the detail of the work that needed doing upfront and his quote was itemised to reflect what each element would cost. The work was done on time and of a high quality and Peter was responsive at all times to any questions or concerns we had. He also made great suggestions of how we could do things better and was open to our ideas and realising our dream. His team were punctual, friendly and took care of the house ensuring the work that they did was of a high standard at all times and attention to detail which really has made a difference now that the project is completed. I wouldn’t hesitate to recommend Future shapes to anyone and would certainly use them again.
Firtree building services ltd
Rating: 5 out of 5
Loft Conversion Company in Muswell Hill
Firtree building services ltd Has been trading since 2011 and specialises in residential extensions and loft conversions.
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Latest review:
Extensions- 13 Nov 2020
Matt and his team recently completed a fantastic job on our kitchen/extension and bathroom refurb. All of his team were great to work with and have on site, which really helped in what was at times quite a stressful space to remain living in. They always left the space as clean and tidy as possible which was appreciated. Matt specifically, was really flexible with us as we had delays in getting permissions and also were a little unclear on exactly what finish etc we wanted on things. He gave us genuine advice on everything from underfloor heating to the skylights and doors. We are so pleased with the finish of everything from the tiling and paving to the bathroom. Can't recommend Firtree enough, if we look to do the loft we will be straight back in touch. Many thanks to all, but special thanks to Matt, Sean, Dan and Joe who held it all together.
D.L.CONS LTD
Rating: 5 out of 5
Loft Conversion Company in Muswell Hill
Hi, I’m Dan, the owner of D.L.CONS LTD – a small, skilled, and reliable building company based in E9, London. With 25+ years of experience, I’ve pretty much done it all – and done it well. I specialize in bathroom and kitchen fitting, bricklaying, painting & decorating, and carpentry, and over the years, I’ve worked on everything from domestic extensions to shop renovations. Whether it's transforming a small bathroom or building an entire extension, my team and I focus on quality, precision, and attention to detail—because great craftsmanship speaks for itself. We mainly work in E9 and the surrounding high-end postcodes—Hackney, Victoria Park, London Fields,and Islington. If you're looking for top-quality workmanship with no shortcuts, I’d love to hear about your project. Let’s build something great together.
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Latest review:
Carpentry- 8 Apr 2026
I’m really happy with the work carried out. He came in to fix my steps after a previous builder had damaged them and left them unstable, and the difference is night and day. Everything now feels solid, secure and properly finished. He also fixed the skirting boards and installed my desk, all to a very high standard. What I really appreciated was how professional he was throughout and the advice he gave along the way, which showed real experience and care for the job. Overall, a really high-quality finish and a great attitude. I wouldn’t hesitate to recommend him.
Spectra K&T
Rating: 5 out of 5
Loft Conversion Company in Muswell Hill
Spectra K&T - Powering Your World Need reliable electrical services? Spectra K&T Electrical Service offers expert residential and commercial wiring, installations, upgrades, door entry systems and 24/7 emergency repairs. 21 years of experience. Our licensed electricians prioritises safety and efficiency with every project.
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Latest review:
Electrical- 9 Feb 2025
Great job. Fast and clean
Bulbuilder
Rating: 4 out of 5
Loft Conversion Company in Muswell Hill
I am from Bulgaria.
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Latest review:
Lovely father son business, professional, friendly guys. I asked them to build a plasterboard wall in order to create an extra bedroom in my house, the wall was finished well, within two days and they charged me a very reasonable rate, as a young women in business I find that tradesmen often try to overcharge me but these gentleman did not. They also took a look at leak that had occured which another professional plumber failed to solve and tried to charge me over £200 just to take a look! I have and will book them on a number of other jobs.
THE WISEHOME GROUP LIMITED
Rating: 5 out of 5
Loft Conversion Company in Muswell Hill
We're big enough to manage large projects and small enough to show care. Our aim is satisfied clients - Pre and post images - Excellent customer ratings and hopefully your endorsement. We're a diligent crew, committed to providing quality within a budget.
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Latest review:
Restoration & Refurbishment- 2 Mar 2021
Found Celino and his team to be professional, prompt and responsive. The refurb project was completed to a high standard and whilst experienced some delays due to Covid lockdowns, Celino managed this very well and remained flexible.
CM Building LTD
Rating: 5 out of 5
Loft Conversion Company in Muswell Hill
At CM Loft Conversions, we specialise in luxury loft conversions, home extensions, and full refurbishments for both residential and commercial properties across London. Our dedicated team is renowned for transforming spaces with unparalleled craftsmanship and meticulous attention to detail. Whether it’s a high-end home, a modern office, or a commercial property, we deliver projects that elevate both form and function. By seamlessly blending design innovation with practical solutions, we ensure every project not only enhances the aesthetic appeal of a space but also maximises its value and usability. At CM Loft Conversions, we are passionate about creating bespoke spaces that reflect the unique needs of our clients. From concept to completion, we focus on the fine details and provide a smooth, stress-free experience. Whether you’re looking to transform your home, expand your business premises, or refurbish a commercial unit, our team is committed to delivering results that exceed expectations.
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Latest review:
I met Charlie and his team from CM Builders Ltd when they were completing a loft extension and ground floor extension for one of my neighbours. Quotation and budget I was given an estimate subject to drawings as I was on a strict budget that I had to keep to for the build. Charlie was able to help me keep to the budget, both at the final agreed plan and during the build. The project was complex in that whilst it was a loft extension, all of the house was rebuilt. The only thing kept was the external walls and first floor rafters. Whilst the footprint of the first floor was not being changed I wanted to bring it up to current building standards with extra insulation. All of the plumbing and electrics were also replaced including a new boiler. The overall build has come in on budget, save for agreed enhancements that I did not think of at the planning stage and or building regulations such as double ceiling fire plaster boards. There were also items such as the original stairs that I wanted to keep, but Charlie was able to increase the height space in the kitchen making the worktop much more usable for tall people for a larger part of the kitchen. These were suggested to me as potential options as part of the build. Stage payments The stage payments have all been sensible throughout the build and linked to the ongoing work schedule. I have not therefore had any concerns in this regard. Quality of work This was a very complicated build as unlike the ground floor the first and new second floor are “L” shaped. The new 2nd floor included an en-suite and 2 bedrooms. Overall the house has been increased from 2 bedrooms 1 bathroom, to four doubles and 2 bathrooms. The quality of work is excellent and Charlie project manages his team to ensure that they all deliver to a high standard- if it is not done correctlt they do it again, with Charlie spotting any issues. Timeline of build This has generally gone to plan very well. As with any build you have to be realistic as things will happen outside of anyone’s control. When issues have arisen Charlie manages them to a conclusion. Also be realistic if you are having to manage to a tight budget. I had to plan for various stage receipts of cash before I could order the kitchen and bathroom items - make sure you understand how this impacts the build and availability of the work force, recognising that CM Builders have to book kitchen fitters and plumbers. CM Builders are also very helpful in that they have sorted out issues with the brick work of my freestanding garage (nothing to do with the build) and also a neighbour’s wall that could have been dangerous to the public, should it have failed. Conclusion The whole family are very pleased with the outcome and we now have the equivalent of a brand new house that has been built to a very high standard. This has definitely been worth doing both from a valuation perspective and quality of life perspective. I would not hesitate to instruct Charlie and his team again.
Compact Building Ltd
Rating: 4.8 out of 5
Loft Conversion Company in Muswell Hill
Compact Building LTD Renovations | Refurbishments | Plumbing – Across London From full home makeovers to small upgrades, we deliver expert results with 0% interest payment options. Make It Compact. Make It Perfect.
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Latest review:
Bathroom Fitting- 21 May 2026
Petru fitted a new shower tray. It was a complicated job due to the location of the piping. Petru was very meticulous and ensured he completed the job correctly and to a high standard.
Fast5 Limited
Rating: 5 out of 5
Loft Conversion Company in Muswell Hill
Are You Tired of Dealing with Builders? We Have the Solution! ✓ Honest and Transparent Pricing ✓ On-Time Project Completion ✓ One-Stop Shop for All Your Building Needs ✓ Residential and Commercial Construction Expert ✓ Health and Safety Compliant ✓ Regulatory Compliant ✓ Insured Don't let construction headaches ruin your home renovation dreams! Contact us today and experience the difference.
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Latest review:
I recently had the pleasure of working with Fast5 for the refurbishment and renovation of my house in London, and I couldn't be happier with the results. The team displayed a high level of professionalism, expertise, and attention to detail throughout the entire project. From the initial design phase to the physical construction, they demonstrated their commitment to customer satisfaction. The comprehensive range of services offered by them included architecture design, interior design, and physical construction, ensured that every aspect of my home renovation was handled with precision and completed to the highest standards. The team's expertise and experience were evident in their work.
Eugen
Rating: 4.8 out of 5
Loft Conversion Company in Muswell Hill
My ins.ta.gram : London Starling Prodecor London Starling ProDecor – Bauwerk Approved Limewash Specialist London Starling ProDecor is a specialist decorative finishing company based in London, officially recognised by Bauwerk Colour as an approved limewash applicator in the United Kingdom. With more than 10 years of experience in premium painting and decorative finishes, we deliver authentic limewash surfaces that combine craftsmanship, texture, and timeless elegance. Our expertise includes colour consultation, sample applications, surface preparation, and the professional application of Bauwerk limewash finishes for residential and commercial interiors. We work closely with homeowners, interior designers, architects, and developers to achieve unique, natural-looking spaces with exceptional attention to detail. Serving London and surrounding areas, we are committed to delivering high-quality workmanship, personalised service, and outstanding results on every project. Best regards, Painter and Decorator Eugen
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Latest review:
Painting & Decorating- 23 Feb 2026
Polite and thorough. Limewashed kitchen/living area. However no caulking, no prepping of paintwork, left the job unfinished - although he said it was finished. Had to get another painter to go over the work that he left.
PLANNING APP LTD
Rating: 5 out of 5
Loft Conversion Company in Muswell Hill
We create architectural drawings. We are specialised in applications for planning permission and building regulations and co-operate with local structural engineers for structural calculations, party wall surveyors and building companies. Our projects include extensions, lofts, garages, house&flat conversions in different councils all around London. If you are thinking of extending, converting, or splitting your property do not hesitate to contact us for a free first consultation & quotation.
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Latest review:
CAD / Drawings- 23 Sep 2020
Marius has been doing a great job and put in an extra effort to ensure we were happy with the outcome. I can not recommend Marius highly enough, especially as he managed to fix an issue with the council that we had from someone else drawings. He was patient and very well prepared. Went an extra mile and gave us different ideas/options. He was flexible with timings and most importantly with price. Had by far the best quote and did an exceptional job.
Rapid Response Contractors
Rating: 5 out of 5
Loft Conversion Company in Muswell Hill
We are a family run business. No job is too big or too small for us. I have been in the building trade from a early age, and qualified in gas and electrical engineering. My wife handles all admin and material orders for the company whilst im hands on with my team of workers.
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Latest review:
Loft Conversion- 27 Aug 2017
Sheraz and his team completed a loft conversion in our house in Harrow, inclusive of new staircase, en-suite bathroom, doors fitting throughout, painting, tiling, plumbing and electrics. We are delighted with our beautiful light and airy new loft bedroom! The quality of the workmanship is excellent, the team were professional, easy to work with throughout the project and completed under 10 weeks. They kept us informed and consulted throughout the build, discussed concerns, provided recommendations and practical solutions to the problems encountered along the way. They really wanted to do the best job they could do for us, were patient explaining the details and readily available to advise and answer any questions. We got to see a project Sheraz was working on as part of our research, spoke to the previous client and felt confident going into the project. At the outset we were provided with the breakdown of the build stages, costs and timescales. They were considerate to our neighbours and accommodating of fellow tradesmen. They also did a number of small additional jobs, which was a huge bonus. Overall we found Sheraz and his team very friendly, reliable and trustworthy. We would use Sheraz and Rapid Response again, and can recommend them without hesitation. We are also happy to provide additional feedback and/or pictures upon request.
Miri G construction LTD
Rating: 5 out of 5
Loft Conversion Company in Muswell Hill
Hello everyone, I have 20 years experience in construction handyman, I have my team. We do Loft conversion Extension Brickwork Landscaping
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V.f. Construction
Rating: 5 out of 5
Loft Conversion Company in Muswell Hill
Hello, My name is Pavlin ,I have over a decade of experience in wide range of construction and carpentry projects..I’m specialised in carpentry and wood flooring needs. If you’re looking to install new brands, hardwoods floors , refinishing existing ones, or repairing specific areas, I’m dedicated to achieve results that transformers your space with beauty and durability. I work closely with clients. I ‘m looking forward to the opportunity to work with you.
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Latest review:
Hard Flooring- 24 Nov 2024
Great job, quick and efficient. Thank you so much!
10/ten construction ltd
Rating: 5 out of 5
Loft Conversion Company in Muswell Hill
Hi I am Landi, 33 years old, I’m in construction industry over 15 years. Build your future with us! We are constantly developing our skills and expanding the knowledge, so as to provide you with modern and effective services. Our team is always up-to-date with all the most important novelties in the field, what makes it possible for us to apply innovative techniques and use professional tools. Thanks to that, we can perform complete refurbishment perfectly. If you choose us to be your building contractors, you can be certain that every project will be precisely planned and carried out. 10/TEN CONSTRUCTION LTD
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Latest review:
Carpentry- 6 Dec 2024
We recently had Landi around to quote on a number of jobs we needed doing around our house. We booked him to fix our roof, which was leaking water - he and his team did an absolutely fantastic job. They were responsive, thorough and did a great job. We won't hesitate to recommend him to anyone and get him back for any work we need doing.
Hamid siddique
Rating: 5 out of 5
Loft Conversion Company in Muswell Hill
NVQ Diploma Holder & CSCS Card Holder Commercial Contractor & Shop Fitter
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Latest review:
Painting & Decorating- 23 Sep 2021
Hamid is very professional and hard worker. He help me 4 days to advance my job. I strong recommend him! Emerson from Top Finish Decorator's.

4.6

Top rated Loft Conversion Companies

Our Loft Conversion Companies in Muswell Hill, are rated 4.6 out of 5 based on 9 reviews from customers like you.

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What services are offered by loft conversion companies in Muswell Hill?

Converting a loft often entails many jobs - some of which you likely haven’t even considered! Fortunately, a professional loft conversion company in Muswell Hill will be able to handle multiple services, ensuring your transformed loft is fit for purpose.

Some of the services loft conversion companies can provide include:

Full loft conversions: Complete design and build projects when structural alterations are needed
Dormer loft conversions: Add extra headroom and floor space with a dormer extension
Velux or rooflight conversions: Ideal for lofts with good existing height; minimal structural change required
Hip-to-gable conversions: Extend the sloped roof to create more usable space
Mansard conversions: A major structural change offering maximum space.
Loft storage conversions: Add flooring, lighting, and insulation for clean, usable storage
Skylight or roof window fitting: Install natural light solutions like Velux windows
Staircase installation: Design and build bespoke stair access to your new loft
Insulation, heating, and ventilation upgrades: Ensure comfort and compliance with energy standards
Design and planning services: Architectural drawings, planning permission, and building regulation approval

Post your job to MyBuilder and you'll be matched with loft conversion companies in Muswell Hill who are interested and available to help. And with the reviews of past customers and the freedom to compare the quotes of similar tradespeople, all in the same place, the ball’s in your court.

Average costs of loft conversion companies in Muswell Hill

Loft conversions tend to be charged on a project basis, rather than by the hour, as they often involve weeks or even months of work.

The cost of your loft conversion depends on a few things, including the style of loft conversion and materials you choose and the size of your property.

That being said, here are average prices for common types of conversion work:

Full loft conversions: £45,000–£70,000+
Dormer loft conversions: £55,000–£85,000+
Velux or rooflight conversions: £25,000–£45,000
Hip-to-gable conversions: £50,000–£80,000+
Mansard conversions: £70,000–£100,000+
Loft storage conversions: £10,000–£20,000
Roof window fitting or skylight installation costs: £1,000–£2,500 per window
Staircase installation costs: £2,000–£5,000
Insulation, heating, and ventilation upgrades: £2,000–£6,000
Design and planning services: £1,500–£4,000

Take a look at our guide to loft conversion costs to get a more detailed breakdown of the different options available when using a Muswell Hill loft conversion company.

Find a loft conversion company in Muswell Hill with MyBuilder

When you’re planning major work like a loft conversion, you’ll want to find the right tradesperson for the job. The great news is, MyBuilder has already done all the time-consuming work for you.

All you need to do is post your job on MyBuilder, completely for free, and we’ll share it with loft conversion companies near you in and around Muswell Hill.

Step 1: Post your job on MyBuilder

Provide a detailed description of your loft conversion project, including the type of conversion you want, any structural changes, preferred materials, and your ideal timeline. Once posted, local loft conversion companies in Muswell Hill can view your job and register their interest.

Step 2: Review and compare Muswell Hill loft conversion companies

Browse the profiles of interested loft conversion companies. On MyBuilder, you can view photos of previous projects alongside customer reviews, compare quotes, and see the types of conversions they specialise in.

Step 3: Contact and discuss your project

Once you’ve reviewed local Muswell Hill loft conversion companies, you can reach out to those that interest you to ask questions, clarify details, and request more specific quotes. At this stage, be sure to discuss vital aspects like planning permission, design options, and estimated timelines to ensure the company meets your requirements.

Step 4: Hire the right Muswell Hill loft conversion company

Once you’re satisfied with their experience, quotes, and approach, you can confirm your hire and start planning your loft conversion.

You can also take a look at our loft conversion specialist hiring guide to help inform your choice. All tradespeople undergo checks at registration - such as verifying ID documents, company details, and certifications for regulated jobs and doing skill assessments - allowing you to hire with confidence.

Questions to ask local loft conversion companies in Muswell Hill

Choosing the right loft conversion company for your job requires finding someone who understands your home and your goals.

Find out which company can share your vision by asking the following questions:

What experience do you have with loft conversions in Muswell Hill?

A local loft conversion company in Muswell Hill will know the types of properties and building styles common in your area, as well as the planning and building regulations that apply. Ask about similar projects they’ve completed locally.

Are you insured, and do you offer a warranty for your work?

Insurance protects your home during the loft conversion process, while a warranty shows the company’s confidence in the quality and durability of their work.

How do you handle planning permission and building regulations?

Established loft conversion companies in Muswell Hill should understand local planning rules and building regulations. Ask how they’ll manage permissions, inspections, and compliance to avoid delays or legal issues.

What is included in your quote?

Ensure the quote covers all essential aspects of the loft conversion: structural work, windows or skylights, staircases, insulation, labour, and any additional fees. Understanding this upfront prevents unexpected costs later.

Do you manage the project from start to finish?

Some Muswell Hill loft conversion companies offer full project management, coordinating architects, builders, and tradespeople. Others may only handle part of the conversion. Clarifying this early on helps you understand what support to expect.

FAQ: Common questions about loft conversions in Muswell Hill

How long does a loft conversion take?

Typically, a loft conversion can take between 6 and 12 weeks, depending on complexity, planning permissions, and any structural work required. Be sure to discuss the timeline with any potential loft conversion companies in Muswell Hill before agreeing to start the work.

Do I need planning permission for a loft conversion in Muswell Hill?

Many loft conversions fall under permitted development, but some require planning permission, especially if you’re adding a dormer, extending the roof, or living in a listed building. A professional Muswell Hill loft conversion company can advise and handle permissions for you.

Will a loft conversion affect my home insurance?

Yes, you’ll need to update your home insurance to cover the conversion. Inform your provider about structural changes, additional rooms, and any changes to utilities or heating systems.

Can I stay in my home during the loft conversion?

Many loft conversions allow you to remain in your home, though noise and dust are inevitable. Some Muswell Hill loft conversion companies offer strategies to minimise disruption, but in complex projects, temporary relocation may be advisable.