Loft Conversion Companies in Belgravia

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 Belgravia

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HWB construction
Rating: 5 out of 5
Loft Conversion Company in Belgravia
Our executive team's come from diverse backgrounds such as design, engineering and management. Dedicated and focused, our vision has always been to be a dynamic and innovative organisation. The joint experience of our executive team is well over 20 years and provides us and our partners with a significant level of expertise which is applied to each project. HWB’s unique approach means we can be flexible and bespoke in all we do when delivering excellence in the construction industry.
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Latest review:
Extensions- 28 Oct 2018
We appointed HWB to carry out a full refurbishment on our house, this involved re-gutting the interior and building an extension and loft conversion plus some landscaping in the garden. We spoke to many builders but finally appointed HWB based on their previous projects and professionalism. Appointing builders for any work is always difficult however we are delighted that we went with HWB. Throughout the project they have demonstrated high levels of professionalism, were very organised and worked to very high standards. They were collaborative throughout the whole project and kept us informed at every stage. As the project developed there were some changes made and HWB were flexible and open to new instructions made by us, as well as giving us valuable advice. Farag, Ayoub and the HWB team were always available to answer any questions and provided us with constant feedback on progress as well as identify new solutions to aid the development. They have a great team of workers who work to a high standard and are supervised throughout the project. We made the right decision going with HWB Construction and have no hesitation in recommending them.
Ryan O'Neill Carpentry and Building
No reviews yet
Loft Conversion Company in Belgravia
Hi I'm a Irish carpenter based in Balham . I have been working as a carpenter for 18 years.I have vast experience in all areas of Carpentry and Building . For the past 3 years, I have been specialising in loft conversions and refurbishments. I have a small respectful team who work hard. I oversee all work as lead carpenter, taking on and completing one job at a time.If shortlisted I can arrange to show you work in have completed. Regards Ryan
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Darren
No reviews yet
Loft Conversion Company in Belgravia
Hi there, this is Darren. We are a family run business with 20+ years in this industry. We have long experience in a wide range of the construction and decoration work: such as loft conversion, extension, roof repair, bricklaying, garden paving, rendering, plastering, tiling, and flooring. We pride ourselves on attention to details and consider for our clients. If you like the work that we have done in the photo gallery, please list us to engage into your project and deliver the best service.
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Jawad
Rating: 5 out of 5
Loft Conversion Company in Belgravia
Jawad builds provides reliable,high quality building covering repairs, renovation and all types of building work from A-Z.
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Latest review:
Damp Proofing- 14 Feb 2026
Great communication and great work.
OBM Properties
Rating: 5 out of 5
Loft Conversion Company in Belgravia
Renovating & maintaining buildings for over 40 years. Extensions, Loft Conversions, Refurbishments Fitted Kitchens, Bedrooms, Offices,Bathrooms Flooring , doors and windows. Interior & exterior decorating, Tiling, Glazing Property maintenance, Handyman service, curtain rails, shelving, storage solutions, picture, mirror hanging, no job too small gather jobs together for excellent value
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Latest review:
Painting & Decorating- 28 Oct 2024
Tony arrived on the same day of being selected for the job, and completed all the work to a very high standard. You will struggle to find a better quality decorator!
J N J Building Services LTD
No reviews yet
Loft Conversion Company in Belgravia
JNJ Building Services Ltd provides bespoke building and renovation services for homes in and around North & West London. We deliver innovative and intuitive solutions for our clients, offering a full range of services from design to completion. Our team works together to provide you with a hassle-free service from start to finish. We aim to minimise the disruption a building project can have on your home life with our commitment to punctuality and always working in a clean and tidy environment.
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Luminous builders ltd
Rating: 3 out of 5
Loft Conversion Company in Belgravia
At Luminous Builders we bring design, build, and refurbishment together under one roof. We treat every property as a living structure — crafted with care, precision, and integrity. Whether you need a bespoke renovation, detailed interior finish, or full property transformation, our mission is simple: to deliver spaces that inspire, endure, and shine.
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Latest review:
Bathroom Fitting- 26 Feb 2026
Worst job ever. The first day he came at 10.30am started the job left at 9pm said it would take a day & a half. The next day he said he would be here at 8.30am again he came at 10.30am & his words were I’m going to finish in 2 hours maximum. By 3pm he still hadn’t finished & I heard him speaking to someone on the phone saying that he would be there in 45 minutes.then he told me he needed a part for my job & he would be a couple of hours, he came back 4 hours later without a part.Again he was here till 9.30pm. He said he had finished. I went to look and his work was bad. I complained he said he would come back the next day. the next he said he had finished & I told him I wasn’t happy he came back the next day. He tidied up his mistakes.he shaved the bottom of the door off a bit as it wouldn’t close coz of the new tiles & he left, as he was leaving he said please give me a good review. I said I’ll tell the truth & he said but the truth isn’t good. He didn’t stick the threshold back on.
In Out Constuct
Rating: 3 out of 5
Loft Conversion Company in Belgravia
My company In Out Construct we are a professional building company which you the client can fully trust. We specialise in most building aspects such as : Refurbishments, Wall openings, structural steel installations, Loft conversions, removal of chimneys, kitchens, bathrooms installation, Kitchen extensions, painting decorating. We always aim to fulfill our customer needs, comply with all British Standard regulations and make sure all our work is of best standard, and complited on time.
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Latest review:
Kitchen Fitting- 16 Jul 2018
Very good work and completed on time. Highly recommended.
House2Home
Rating: 5 out of 5
Loft Conversion Company in Belgravia
House to Home Atelier is a local building company based in Abbey Wood, South East London. We specialise in end-to-end home renovations and construction, from initial design and planning to final finishes. Our team delivers loft conversions, house extensions, full refurbishments, bathrooms, kitchens, and bespoke interior solutions, always with a focus on quality, efficiency, and maximising space. We combine traditional craftsmanship with modern solutions, ensuring every project is completed on time, on budget, and to the highest standards. With our experience and carefully selected team of skilled tradespeople, we take care of everything from structural work and plumbing to carpentry, plastering, and finishing touches. We are local, accountable, and hands-on, so you always know who is managing your project. Your home is your investment, and we treat it as our own. Whether it’s a small repair or a full-scale renovation, we deliver solutions that maximise space, enhance character, and provide lasting quality.
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Latest review:
Works consisted of hip to gable loft conversion under permitted development and a refurbishment of the first floor of a semi-detached house into a four bedroom/bathroom layout, including new windows, balconies, wiring and plumbing as well as sound proofing the walls. With 100m2 of works this was my first introduction to a major building project and I was worried by the horror stories I have heard about builders. From the outset Monika set my mind at rest, listening to what I wanted, making helpful suggestions, offering tips for instance on how to save on the scaffolding and always asking me when choices needed to be made. She took the trouble to ensure that I knew what was happening, with daily photos of progress without the need for me to climb scaffolding. I was working to a tight timescale and budget, which Monika understood, and even having accommodated a number of changes including some additions, the project came in on time and on budget. All of the workers on the site were very professional and the quality of the work and the attention to detail was exceptional. I have no hesitation in recommending Monika and her team - I went into this project apprehensive and not sure what to expect; thanks to Monika, I came out the other side delighted by and looking forward to working with her and her team again to renovate my ground floor.
Mathew Crane
No reviews yet
Loft Conversion Company in Belgravia
I'm Mathew Crane, a qualified and apprenticeship served carpenter with 11 years of experience in all aspects of 1st and 2nd fix carpentry. I have experience in new home build construction and renovation, extension and loft conversions. From foundations all the way to finishing joinery, I am competent and experienced.
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a-z renovations and construction
No reviews yet
Loft Conversion Company in Belgravia
My name is Avni, Our company is called 'a-z renovations & construction' we take all different kind of projects whether they are small or big. all of our jobs are mainly recommended. our jobs are: Extensions, loft conversions, mezzanine floors, plastering and plumbing, wall & floor tiling, painting and decorating, kitchen and bathroom fitting, carpentry, patio and garden fixing. we cover London and home counties.
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PRASH DEVELOPMENTS LIMITED
Rating: 5 out of 5
Loft Conversion Company in Belgravia
PRASH DEVELOPMENTS LTD specialises in construction of Large Luxury New build Home, HMO & Flat developments, Extensions and Loft conversions We are team of skilled professional with 13 years of combined experiences. We pride ourselves in offering best quality hassle free service with effective pricing and timely delivery. Please feel free to contact us for any construction related information.
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Latest review:
The builders were in time and a great job done in one day when others quoted for 3 days job — all done with great professionalism and satisfaction — will give them 10⭐️
Adrian Construction Services Limited
Rating: 4.6 out of 5
Loft Conversion Company in Belgravia
ABOUT ADRIAN CONSTRUCTION SERVICES LTD has been operating in for over 10 years. Being a domestic building company we have worked in every aspect of Renovation and new Build We are proud of our lasting, repeat- business relationships with clients in a wide range of industries, built by meeting their needs, exceeding their expectations, and delivering on our promises.
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Latest review:
Tiling- 1 Sep 2020
**HIGHLY NOT RECOMMENDED** I have not seen such an unprofessional service provider in my entire life. His guys lack the basic skills of tiling and created a mess of my new home. Issues: 1. They spill water in my bedroom with carpet and in lobby with wooden flooring which got damage 2. Whole house was filled with tile dust, 3. the tiles were not cleaned 4. tiles waste a separate issue 5. my balcony looked like a garbage room 6. cement marks on walls, ceiling and walls needs a paint work 7. to my utter disgust they left tiles pieces in my toilet. 8. Also the tiles are so poorly installed that I think I was better off without them. I wish there was an option to upload the pictures so people could understand my pain. Upon giving him calls to see the mess created by his guys he was reluctant at 1st to come and said he is tired & cant come. On sharing pics, he decided to show up & promised to clean the mess & complete the task. But after 2 weeks of struggle his guys shows up 3 times for 2-3 hour each. But today he finally decided to quit without doing his job. Now I need to find a new Contractor to complete the work. Also, He promised that he does quality work, to start when he visited and quoted me a price and said that he would send the quotation on mybuilder and thats how it works. He sent quotation 3 days later with 65% increase in price and later negotiated to 30% higher than original
Sandhya Mahadevan
No reviews yet
Loft Conversion Company in Belgravia
I am a Structural Engineer with experience delivering structural design for residential and commercial projects. I specialise in alterations to existing buildings, including wall removals, loft conversions, extensions, and steel and timber design. I provide clear calculations, drawings, and practical solutions that meet Building Regulations and site constraints.
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Victoria Park Interiors ltd
No reviews yet
Loft Conversion Company in Belgravia
I’m a 61 year old hard wood joiner, I’ve worked on big projects all my working life, And a vast array of buildings, I worked for a company for 20 years and specialise in high end interiors and building works.
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Unique Lofts Ltd
Rating: 5 out of 5
Loft Conversion Company in Belgravia
I am a specialist loft converter and currently convert approximately 40 lofts per year. We have over 20 years experience in the loft industry and my company is fully accredited by federation of master builders, trustmark and guild of mastercraftsmen. I have many reviews and can happily show previous conversions that have been completed. We work throughout london and surrounding areas and are always pleased to offer free quotations and advice for your project.
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Latest review:
Unique Lofts created a dormer loft with ensuite bathroom with shower cubicle in our mid-terrace 2 bed house. The team Mark allocated completed the structure of the loft within 5 weeks, faster than their estimation of 6 weeks. All trades persons used by or recommend by unique we're courteous, professional and considerate when we had to work from home. The main structure budget costed exactly as budgeted and all other costs were outlined in the quote. Communication with the build team and Mark was really good and they always answered any questions or concerns I had. The work done has been complimented by all who have seen it and we are still very happy with our new loft room. I am happy to recommend Unique Lofts and Mark to anyone who is considering the big task of converting their loft.

4.4

Top rated Loft Conversion Companies

Our Loft Conversion Companies in Belgravia, 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 Belgravia?

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

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 Belgravia loft conversion company.

Find a loft conversion company in Belgravia 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 Belgravia.

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 Belgravia can view your job and register their interest.

Step 2: Review and compare Belgravia 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 Belgravia 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 Belgravia 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 Belgravia

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 Belgravia?

A local loft conversion company in Belgravia 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 Belgravia 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 Belgravia 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 Belgravia

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 Belgravia before agreeing to start the work.

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

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