Loft Conversion Companies in Chiswick

Name: Loft Conversion Company
Brand: MyBuilder
SKU: loft-conversion-company
Rating: 4.5 (8 reviews)

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Some of our top rated loft conversion companies in Chiswick

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Loft conversion
Rating: 5 out of 5
Loft Conversion Company in Chiswick
I specialise in Lof Conversion and extensions. I've been covering lofts for over 15 years. If you are looking to create extra space for you and your family then we can have this done for you, affordable and also providing a professional job.
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Latest review:
Loft Conversion- 7 Dec 2022
Job well done and fast too. Also very much appreciated that Soren left the place clean after finishing the job.
cKraft Design & Build Ltd
No reviews yet
Loft Conversion Company in Chiswick
I am an Architectural Designer and Project Manager with over eight years of experience delivering residential and commercial projects across London and the South East. My background covers architectural design, interior design, construction management, and large‑scale fit‑out projects, giving me both creative design expertise and strong practical knowledge of how buildings are constructed. I work across London, Greater London, Berkshire, Surrey, and nearby areas, and I also take on remote design projects nationwide. For clients who cannot accommodate site visits, I provide clear guidance on measurements, photos, and information needed so the project can run smoothly from start to finish. My specialist skills include planning drawings, building regulation packages, technical details, 3D visuals, and full construction documentation for extensions, loft conversions, refurbishments, and new builds. I’ve managed projects from £20k to £2m, coordinating with engineers, contractors, and homeowners to ensure designs are accurate, compliant, and buildable. Clients value my clear communication, attention to detail, and commitment to quality. I deliver practical, well‑thought‑out designs and a smooth experience on‑site or remotely.
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mink construction ltd
Rating: 3.5 out of 5
Loft Conversion Company in Chiswick
We offer a range of services that will suit most of your essential building and construction needs We work together as a team a highly qualified and professional construction outfit We can help you with design of all projects from small bathroom to new build house We offer: Loft conversion House extensions Flat roof Pitch roof New builds Home renovation Heating and plumbing Brickwork Electrical work Plastering Kitchen and bathroom
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Latest review:
Kitchen Fitting- 8 Sep 2021
Great guys, very happy with the job!
BBB Projects Ltd
No reviews yet
Loft Conversion Company in Chiswick
We provide a bespoke construction service, working directly with you or your architect/designer and engineer. After an initial outline cost assessment for your project we prepare a detailed specification and working budget based upon your specification. We do not provide a fixed contract but work very closely to an agreed budget and specification and use our experience to deliver a high quality building project within a controlled time frame.
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Sajmir
Rating: 5 out of 5
Loft Conversion Company in Chiswick
Painting decorations wall paper,silicone rendering,point bricks
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Latest review:
Painting & Decorating- 3 Jun 2026
Sajmir filled and repainted a crack in my bathroom to a high standard. He was v professional; working quickly, keeping me updated as the job went on and kept everything v tidy too. I’ll definitely hire him again myself and would recommend him to others.
O&C General Construction ltd
Rating: 4.2 out of 5
Loft Conversion Company in Chiswick
O&C General Construction is a construction company that specializes in renovations and general construction. The company has a wide range of experience, from renovations to new construction, and is able to provide a high level of service and quality workmanship. What inspired us to start our own business is adding value to people’s lives, by creating the perfect home for each client, by listening to their needs and create a project that’s perfect for them.
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Latest review:
Restoration & Refurbishment- 19 Apr 2026
Didn’t return to finish the job, respond to calls or messages in response to finishing the job. Sadly wouldn’t hire Ovi & Mihai (O&C) again. Friendly & responsive initially. Worked well, on time, eager to please, did a good job - not perfect but adequate, average attention to detail but corrected when asked. We initially had a faux chimney put in, they touted for more work & provided alcove shelving/cabinet ideas which we subsequently hired them for. They worked intermittently (dad around for first half of job then left for Romania) as this was agreed as best for both parties. However they left the job incomplete once paid (were paid on time, each time, with no bargaining). Didn’t respond to texts or calls, leaving cabinet doors unfinished, large chips & cracks unfilled. Laminate was also poorly cut around hearth stone, left chimney cutout unfinished with no cement to the base. Lack of respect and wouldn’t hire again as cannot trust they won’t disappear. Note previous reviews.
Su Su Construction Limited
Rating: 5 out of 5
Loft Conversion Company in Chiswick
Welcome to Susu Construction: Your Premier London Construction Partner Are you searching for a London construction company that stands out for its excellence, commitment, and innovation? Look no further than Susu Construction, your go-to choice for top-notch construction solutions in the bustling capital of London.
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Latest review:
Groundwork & Foundations- 2 Dec 2022
We are very happy and glad to have found Su Su Construction. It is great to work with such an open minded contractor who is very experienced and diligent. To us architects it is really important to be able to explore alternative means of construction in order to create long lasting, beautiful and healthy environments and with SuSu we are on the right track. Highly recommend.
DMK Builders
Rating: 4.8 out of 5
Loft Conversion Company in Chiswick
DMK builders is a family run business specialising in general interior refurbishment, kitchen fitting, carpentry and joinery and much more. We can renovate your property from start to finish, design and make furniture including wardrobes, tables, fireplaces, staircases etc. We pride ourselves in quality and innovation in our work. Micheal, our carpenter has 20 years’ experience in the construction industry, our other team members have the skills to assure quality and dedication towards any job.
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Latest review:
Kitchen Fitting- 23 Aug 2019
Professional approach to all aspects of work involved. Good knowledge of elecreics and plumbing. Kitchen units, work top and tiling carried out to a high standard. Recommended.
LEBELLE HERITAGE & RESTORATION LTD
Rating: 5 out of 5
Loft Conversion Company in Chiswick
Lebelle Heritage & Restoration Lebelle Heritage & Restoration is a professional building and construction company specialising in renovations, refurbishments, and heritage restoration. We take on all types of projects, from full property renovations and structural upgrades to detailed interior finishes and the careful restoration of period features. Our team is skilled in both traditional craftsmanship and modern construction methods, allowing us to deliver work that is reliable, high-quality, and built to last. Whether we’re restoring the character of an older property or breathing new life into a modern home, we focus on precision, honesty, and clear communication throughout every stage of the job. We pride ourselves on delivering clean, efficient, and well-executed work that meets the needs of our clients and respects the integrity of each building. At Lebelle Heritage & Restoration, we build, renovate, refurbish, and restore with a commitment to quality and long-term durability.
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Latest review:
After a previous contractor took our money and left our loft extension unfinished, we were devastated and worried about how we would ever get our home back to normal. Then Lewis from Lebelle stepped in and completely turned things around. Lewis was patient, understanding, and incredibly professional. He worked quickly, kept costs under control, and finished the loft extension to a standard we’re so happy with. The stress he took off our shoulders was unbelievable. We honestly can’t thank Lewis enough. If you’re looking for someone trustworthy, skilled, and genuinely caring, Lebelle is the company to call.
Jhand construction ltd
Rating: 4.5 out of 5
Loft Conversion Company in Chiswick
Hi i have 14 years experience in construction industry we do loft conversion, extensions please feel free contact us
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Latest review:
Plastering- 21 Aug 2025
Best construction company, amazing staff. Thank you so much for the service.
Garey Limited
Rating: 5 out of 5
Loft Conversion Company in Chiswick
General building
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Latest review:
Very reliable and high quality of work.
Urban Construction Management Limited
No reviews yet
Loft Conversion Company in Chiswick
We have been in business since 2015, and working with a number of leading contractors within the construction industry in the country. We have carried out works from new builds to refurbishments, and specialise in loft conversions and extensions, garden rooms, kitchens and bathrooms, and structural alterations. We have all the relevant insurance - employment liability, public liability and professional indemnity cover. We are certified by Construction Line, CHAS, Safe Contractor and BMTrada (Fire Door Installer).
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Florjan Shatri
Rating: 3 out of 5
Loft Conversion Company in Chiswick
Brick work paving pointing extantion
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Latest review:
Bricklaying- 9 Feb 2023
Not hired - error cannot cancel job - no fault of contractor
H&J Properties 02 Ltd
Rating: 5 out of 5
Loft Conversion Company in Chiswick
H&J Properties is your friendly, reliable small team with over 10 years of experience in the building industry. We design, plan, build, and project manage, so you can rely on us for a full round of service. From floor and wall tiling to full kitchen and bathroom installations, we’ve got your home covered. We handle plastering, painting, drylining, insulation, and more with precision and pride. Need a loft, rear or basement extension, a new roof, or concrete work? No problem. Whether it’s bricklaying, basement waterproofing, or installing windows and doors, we bring craftsmanship and care to every job. Big or small, we build it right. Please message us directly for more project images.
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Latest review:
We have contracted H&J Properties for our house refurbishment in London. I was impressed with the team's professionalism and project management from start to finish. We had no plans or planning approved, so we wanted a design and build company who will be able to look after the project from start to finish. They did just that. Working with the architects and the planning application before starting the project planning. As always, there are, of course, unforeseen issues arising with the old houses in london but I could't be happier with the communication received from the team. Thanks for the great job.
B&D Construction London Ltd
Rating: 5 out of 5
Loft Conversion Company in Chiswick
Hi Our company undertake jobs ,Loft Conversion, Extensions, Carpentry, Gardens, Plumbing/Electrical , Plastering and Decorating,
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Latest review:
We’ve had multiple jobs done by Silviya. The first was a small extension and downstairs and partial upstairs refurbishment with new kitchen and 2 bathrooms fitted. This large job was completed within 16 weeks and looks exactly as we hoped. Given the extent of works we moved out for the build. The second was the construction of an outbuilding and garden redesign (patio and astro fitted). Again the results are great. We lived in during this project and I worked from home without disturbance. The latest has been the re-fit of new windows, front door and fixing the front render. Again, the results are very professional and minimal disturbance while the work took place. Will definitely use him and his team again, should we need any more building work and recommend them to others
Star building and construction ltd
Rating: 5 out of 5
Loft Conversion Company in Chiswick
We have wide range of tradesmen available to carry out all different kind of jobs from Installing floors, building an extension, loft conversions, new builds and house renovations. We are dedicated to ensure that all our work meets the standards of our clients, hence why all our tradesmen are handpicked for each job. We thank you in advance for your consideration and welcome you to look through our portfolio. You
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Latest review:
New extension, kitchen, shower room, flooring, fiber glass roof, roof light, new electrics, plumbing, boiler installation, removal of chimney, rear patio, soakaway, painting and decorating Satnam has exceeded our expectations in carrying out the complete job to our satisfaction within the agreed time to a very high standard. We are extremely pleased with his work. Satnam helped us select good quality products from suppliers for much less cost than if we were to source them ourselves. He was honest, courteous, professional, flexible, open to changes and made suggestions to improve the overall look. He even passed on his builders' discounts to us. We highly recommend this ambitious young builder who has excelled in the trade. We wish Satnam and his team the very best.

4.5

Top rated Loft Conversion Companies

Our Loft Conversion Companies in Chiswick, are rated 4.5 out of 5 based on 8 reviews from customers like you.

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What services are offered by loft conversion companies in Chiswick?

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

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 Chiswick loft conversion company.

Find a loft conversion company in Chiswick 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 Chiswick.

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 Chiswick can view your job and register their interest.

Step 2: Review and compare Chiswick 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 Chiswick 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 Chiswick 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 Chiswick

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 Chiswick?

A local loft conversion company in Chiswick 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 Chiswick 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 Chiswick 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 Chiswick

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 Chiswick before agreeing to start the work.

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

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