Loft Conversion Companies in Mayfair

Name: Loft Conversion Company
Brand: MyBuilder
SKU: loft-conversion-company
Rating: 4.4 (12 reviews)

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Some of our top rated loft conversion companies in Mayfair

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P.S. Building Projects Ltd
Rating: 5 out of 5
Loft Conversion Company in Mayfair
"WE ARE A HOME EXTENSION AND LOFT CONVERSION SPECIALIST. WE ALSO OFFER A COMPLETE BUILDING SERVICE! A family-run business, Quick growing building company with more than 20 yrs building experience. And we’ve been providing the highest quality work for our customers ever since. Everyone here at P.S.Building Projects Ltd is dedicated to meeting your specific requirements, delivering bespoke work on budget and on time. Which means you’ll enjoy peace of mind from start to finish."
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Latest review:
Conversions - General- 11 Oct 2022
We've been seriously impressed with Pawel and his team. They opened up our rear dining room/kitchen wall using an RSJ, following our engineer's drawings perfectly. They also did a few bits of plumbing and bricked up one of the windows at the rear, which is where the new kitchen will be fitted. They were incredibly tidy and really pleasant and courteous to be around, which my wife was so grateful for given we live in a busy family house (most builders are not like this...), I can't thank them enough! We will definitely be using them again in the not-so-distant future!
Zef rrucaj
Rating: 5 out of 5
Loft Conversion Company in Mayfair
High focused professional operating in building projects. I like to sort out my clients’ needs and i am dedicated to deliver them the best possible work. Like to be punctual in any phase of my work. I offer the best work at the fantastic price .
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Latest review:
Fencing- 13 Mar 2022
Zef was prompt to respond and came on the agreed time to give me a quote. The quote was reasonable and he came back the next day on time to complete the job. I am very happy with the job, he was careful and left the site neat and tidy. Will definitely hire him for any future jobs.
Reinaldo
Rating: 5 out of 5
Loft Conversion Company in Mayfair
Hello, my name is Reinaldo Puerta and i owned a building company named Puerta Builders. My team of workers can deliver high standards of finishes, quality and schedules that meet requirements of our client’s expectations. Our company specialises in new construction, refurbishment of existing facilities, loft conversions and house extensions. We are able to offer the lowest rates with greater of quality and services. Puerta Builders looks forward to being part of your Work. Let us help you.
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Latest review:
Carpentry- 16 Apr 2017
For a number of reasons, Reinaldo is without doubt the best tradesman I have come across, After having Cowboy Builders ruin my brand new doors. The quality of his work was faultless, he was prompt, always on time and very efficient, his work and work area was always left clean and tidy, and his communication skills, with regards to problem solving and making sure that the work he was carrying out was to my requirements, was excellent. I gave Reinaldo a number of jobs to do over a few separate visits and was not let down once. I cannot recommend Reinaldo highly enough and will be using him again for any future carpentry & joinery works. Reinaldo is not a carpenter however a magician as he can spell his Magic on any given work with a smile.Thanks again ,Reinaldo great work!
Olgert Doko
Rating: 4.8 out of 5
Loft Conversion Company in Mayfair
My name is Olgert and my team and I are ready to give you a quote, on any building needs - painting, plastering, tiling, roofing, extensions and many other services. We are friendly, reliable and professional and we care about our work. Give us a call today for a free quote. We are located in North West London and we have more than 15 years experience in construction.
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Latest review:
Loft Conversion- 5 Jul 2023
Major refurbishment and reconfiguration project to 3-storey terrace taking 6 months. The building team were: Competitively priced Reliable Hard working Trust worthy And delivered to schedule I would happily recommend them and work with them again
Vasile Balta
Rating: 5 out of 5
Loft Conversion Company in Mayfair
Thank you for reading this I’m Vas( owner of BALTA COMPLETE CONSTRUCTION LTD)from 16 started as a apprentice in construction industry, have work over the years on big projects also small ones , when I was about 30 years old whit lots of experience in house refurbishment, extensions and lofts , decided to open my business, it was the best idea I take Ower focus as a business is a hight quality service, on all projects(big or small) and the feedback from the profile prof this As a person in charge whit the projects, I’m very easy to talk to, friendly , also more than happy to sort issues out Thank you for reading this As a business ower focus is on quality, high end finishes and trat each coustumer whit respect, and live them happy after the project is finished
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Latest review:
Conversions - General- 24 Apr 2026
I recently had extensive work completed in my flat by Vas, and I couldn’t be happier with the result. The service was excellent from start to finish. Not only was the quality of the work consistently high, but the whole experience was smooth and stress-free. What really stood out was Vas’s level of skill and versatility. Every aspect of the project was handled with care and professionalism — from plumbing and new water heating pipes, to new electrics, installing a new kitchen, laying a beautiful wooden floor, renovating the bathroom, and even replacing doors with a sliding door system. Each element was completed to a very high standard. On top of that, Vas was friendly, proactive, and easy to communicate with throughout. Nothing ever felt like too much trouble, and it was clear he takes real pride in delivering great results. It was genuinely a pleasure to deal with Vas, and I would highly recommend his services to anyone looking for reliable, high-quality work. Thank you again!
Til construction LTD
Rating: 5 out of 5
Loft Conversion Company in Mayfair
TIL Construction LTD is a well-establish company that provides a complete and cost-effective solution for your building needs. We pride ourselves on a team of highly skilled craftsmen and professionals ready to deliver any sized construction project from start to finish. Whether it’s a new build, extension, loft conversion, or renovation, we can help with a portfolio of building work across London and other cities within the UK.
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Latest review:
Carpentry- 5 Aug 2023
A gréât expérience. Thé team were very professional, well priced, and did a great job. They left our apartment immaculately clean and fixed all issues we had. They were extremely polite and responsive and did a great job in the timeframe and for the quoted cost. Highly recommend
Mladen Skoric
Rating: 5 out of 5
Loft Conversion Company in Mayfair
SM2 Construction Solutions Ltd – General Building & Full Refurbishment Specialists We specialise in complete property refurbishments, structural alterations, loft conversions and extensions across London. Our work includes full internal renovations, kitchen installations, bespoke carpentry, flooring, decorating and project coordination of all trades including plumbing, electrical and plastering. We focus on delivering projects on time, on budget and to a high professional standard. Recent projects include full flat refurbishments completed within 6–8 weeks. Reliable, organised and fully insured.
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Latest review:
Carpentry- 24 Nov 2020
Mladen provided a competitive quote and did a good job of re-painting the exterior wood cladding and window sills of our house within a tight timescale. I would recommend him and his team for future work.
AVStructures
Rating: 5 out of 5
Loft Conversion Company in Mayfair
A.V. Structures is a construction company working with top-rated contractors and providing services to private clients around London. Our highly experienced team of builders has excellent skills and knowledge gained delivering projects locally and abroad. We approach each building process following Environmental, Health, and Safety guidelines. All our quotes are free, and we will always try to get a quote to you within a week of us visiting your property.
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Latest review:
Demolition- 24 Nov 2021
We employed A.V Structures for the building of an external wall around our property, the removal of a garage and the installation of railings and gates. Throughout the 4 week programme we could not have been happier with their work. Arrival was prompt, their pace of work displayed energy and purpose. They were mindful of us and our neighbours and made sure the area was left clean and tidy at the end of each days work.in addition the workmen were courteous and kept us fully informed. Alex, the owner of the company, kept in close contact with us to assure himself of our satisfaction. He came on site at intervals to check that all was going according to plan. We therefore felt completely confident that quality and outcomes were important to him. Employing A.V Structures was a decision we were pleased to have made. We would use them again without hesitation and recommend them highly to anyone considering similar work.
Abu Fahad Design & Build
Rating: 3.9 out of 5
Loft Conversion Company in Mayfair
I am an Architecture & Planning Consultant. I have been practising architecture for over four years now.I have experienced many complex planning applications and managed to achieve approvals successfully. In my team, I have structural engineers and builders to provide a full package to my clients from design to build.
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Latest review:
Architecture- 7 Feb 2019
Professional, honest and reliable.
Garey Limited
Rating: 5 out of 5
Loft Conversion Company in Mayfair
General building
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Latest review:
Very reliable and high quality of work.
Exquisite Design & Build Ltd
Rating: 5 out of 5
Loft Conversion Company in Mayfair
Welcome to Exquisite Design & Build, a premier construction company based in London. We specialise in delivering exceptional construction work and Architectural & Structural Design services to both Commercial & Residential Clients. Our comprehensive offerings include the full range of Building & Refurbishment Works, Planning Applications, 2D & 3D Design and Visualisations, Structural Design, Project Management and detailed Estimates. “Exquisite” - carries the implication that every detail of our work, is of rare and appealing excellence. We transform your vision into reality with precision and professionalism, ensuring a seamless and satisfying experience from concept to completion. Our company is TRUSTMARK registered company, a Government-endorsed sign of consumer protection for home improvements, repairs, renewable energy installations and low energy retrofits. We are also member of the FEDERATION OF MASTER BUILDERS.
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Latest review:
Exquisite Design and Build recently reworked and refurbished our new, six bedroom detached house, having previously completed a kitchen extension at our last property. Andrei’s work is of an incredibly high standard. He shows great attention to detail throughout the entire process. Not only does he execute the work beautifully, but he offers great design ideas and and suggestions. With regard to contracting, pricing and invoicing, Andrei provides clear and accurate documentation which gives us complete trust in his ability to work within our budget. Andrei and his team are an absolute pleasure to work with; hardworking, punctual and tidy. I have recommended them to three other friends, all of whom chose to work with him on their extension/refurbishment projects and were equally delighted with the results. I would not hesitate to recommend Exquisite Design and Build to anyone, regardless of the size and complexity of their project.
MartinRoofing & BuilderService
Rating: 4.8 out of 5
Loft Conversion Company in Mayfair
Professional/qualified Roofer/Joiner/carpenter/handyman/ Fibreglass CYB/BBA/RoofingApprovedContractor/TekSealApproved/NVQ3/ConstructionSkillsCertificationScheme, Roofing/loft/Extension/Floor/ interior work and Decorator/Painter team. Steel welding/Lead work/Structural wood work/Cooperative witch Certificates electrical/ plumbing contractors/Free Quote&Warranty .Many years of experience, friendly cooperation. Clear valuation/Quote. Always find the best solution. Performs only professional work!
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Latest review:
Roofing (Pitched)- 14 Nov 2017
Marcin was a pleasure to deal with! He is knowledgeable and professional - he came and explained clearly what needed to done, he emailed me materials' list required and suggested suppliers with product links and he was very helpful at agreeing between us who will be supplying what material. He came and did the job without disruption, in an efficient manner. While he was quick he was thorough to ensure the job is done to a correct standard. He is smart and finds solutions that work. I wish every tradesperson was like him!
Ed’s loft conversions Ltd
Rating: 5 out of 5
Loft Conversion Company in Mayfair
We specialise in loft conversions, Extension to a complete house refurbishment.
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Latest review:
I engaged Edi to work on a full renovation and refurbishment of a 4 bedroom detached house with front and back gardens on Blackheath’s Cator Estate. Edi did an extensive amount of work, including stripping out; plumbing; plastering; windows installation; carpentry; and decoration. In addition, after commencing the property work, once the scaffold had been erected, following sensible advice, Edi and his team replaced the roof and fully insulated the attic; fitted additional electric points; rebuilt the garden patio; and replaced the flooring throughout, in addition to other important jobs including re rendering and pointing of chimneys, building new wardrobes in the main bedrooms; and upgrading the radiators. A new kitchen, and two new bathrooms have been fitted. The kitchen redesign meant knocking through a wall with the lounge to create a larger space. Edi is a highly skilled craftsman, who thinks creatively as he works to make best use of the space, including shelf fittings, and additional lighting for example. He has built some beautiful wardrobes, and the internal decorations have brightened up what was previously a rather shabby looking house. In addition to the above, I wish to commend Edi for his professionalism, courtesy, and passion for doing the best work possible. On all the site visits I attended, and every time I spoke with him on the phone, it was striking how much he cared about the work that he was doing, his desire to ensure that the house would look the best. I always left site visits with the feeling that he cared so much about the house that he could be safely relied on to give the best advice to enable us to make the right decisions. I also noticed that Edi and his team would take the upmost care to keep the property safe, tidy and in good shape throughout the project. He can be fully trusted to look after any site he works on. He is intelligent and careful when it comes to safety and security. It has been a pleasure for Edi and his team to work with us over a period of around 6 months, and he did so much to reduce the stress of a significant project so that we could always rely on him to work methodically, patiently and sensibly, and to make best use of the resources available. His pleasantness shines through, and everyone I know who has spoken to him has always provided me with the most positive feedback I have no hesitation in recommending Edi to anyone who wishes to engage him for future projects, and is most deserving of the good words that I and others that work with him have to say about him.
Knowhow decorating services ltd
Rating: 5 out of 5
Loft Conversion Company in Mayfair
This is a family run company and our main objective has been to provide the highest quality on the market. I have over 20 years experience in private properties and commercial properties. I take on full property renovations so this is not the only trade I cover, however this is the trade that I first started in 25 years ago
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Latest review:
Samouil and his team at KnowHow Decorating completed a major project restoring our house. Work scope included sorting the tired and broken windows , guttering , fascia panels. Replacing rotten window ledges was done with superbly crafted new hard wood. No task was too difficult as the house was looking shabby. Full painting inside and outside was really well done. We feel like we have a "new" house and Samouil and team are a pleasure to deal with. They go beyond to satisfy you . I do not hesitate to recommend them strongly and will use again anytime .
Perfectloft
Rating: 5 out of 5
Loft Conversion Company in Mayfair
Converting your loft into a beautiful living space may seem like a daunting task, but the results are always going to be worth the painstaking process. The loft conversion procedure does not have to be that difficult; all you require is to hire right people to do the right job.
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Latest review:
Kitchen Fitting- 4 Nov 2019
Bogdan and Marius were great. They constantly kept us updated with progress and came up with good solutions to any issues they encountered, checking we were OK with them before progressing. They were on time, efficient, helpful and tidied up after themselves. I would definitely recommend them.
Rise Up Building
Rating: 5 out of 5
Loft Conversion Company in Mayfair
We are loft conversion, extension, roofing and refurbishment experts - transforming spaces, exceeding expectations. At Rise Up Building LTD, we manage projects of all sizes, ensuring a smooth and stress-free experience. We serve all of London. With over a decade of industry experience. We pride ourselves on being fast, precise and personable, leaving you with your beautiful new space. Our commitment to delivering personalised service ensures maximum satisfaction every time. Contact us for inquiries.
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Latest review:
I recently hire rise up building to do my loft conversion, everything was done fast with care and quality, i really enjoyed having this guys around. Love it how they explained every step and every detail about the work. If you looking for some honest and professional contact rise up building, highly recommend them.

4.4

Top rated Loft Conversion Companies

Our Loft Conversion Companies in Mayfair, are rated 4.4 out of 5 based on 12 reviews from customers like you.

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What services are offered by loft conversion companies in Mayfair?

Converting a loft often entails many jobs - some of which you likely haven’t even considered! Fortunately, a professional loft conversion company in Mayfair 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 Mayfair 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 Mayfair

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 Mayfair loft conversion company.

Find a loft conversion company in Mayfair 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 Mayfair.

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 Mayfair can view your job and register their interest.

Step 2: Review and compare Mayfair 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 Mayfair 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 Mayfair 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 Mayfair

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 Mayfair?

A local loft conversion company in Mayfair 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 Mayfair 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 Mayfair 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 Mayfair

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 Mayfair before agreeing to start the work.

Do I need planning permission for a loft conversion in Mayfair?

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 Mayfair 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 Mayfair loft conversion companies offer strategies to minimise disruption, but in complex projects, temporary relocation may be advisable.