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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F D SERVICES FULHAM LTD
Rating: 5 out of 5
Loft Conversion Company in Chiswick
The profile of F D services has been enriched by hard-working, highly qualified professionals who always do their very best to achieve excellence in their work. As a result, F D services is a well-established and trusted gas company with extensive experience. Customers are always happy to request our services again and again, as well as to recommend the company.
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Latest review:
Gas Work- 7 May 2024
Florin has done a great job to replace my gas system boiler. He worked hard to finish the job in one day, in fact stayed late evening to make sure the job was completed. He registered the boiler, provided the building reg and Lanlord certificate. I will recommend him based on my experience and will use him again in future.
singhbuilder
Rating: 5 out of 5
Loft Conversion Company in Chiswick
Hi my name is Dil Singh, I'm a runing own business with 10years + experience, Multi skilled in all aspects of as a certified electrician, roofing and building.Able to deliver a high standard of work. All new work can be done guaranteed,References avalible on request. I done plenty jobs like electric work: change the consumer unit, wiring, design and inspection and testing, fault finding, loft conversion, extensions. I never let down my customers. Job done guaranteed from a to z by me.
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Latest review:
Loft Conversion- 26 Dec 2019
Working with Dil was a pleasure! From the the outset he was very helpful with calculating overall costs (over and above his costs) for the build to ensure everything had been catered for and was very thorough in checking that my ideas/plans were appropriate for the long term. It was through the initial discussion that some minor adjustments were made and for the better I believe, simple things like where the new Megaflow System should be placed. He was very quick and efficient in identifying where there may be issues upfront and has the right contacts to get things sorted to minimise problems further into the build. I had to get a new mains water pipe installed which to me was a a major job but he got it sorted very quickly through his contacts at a very reasonable cost. His team are very polite and they do a as good a job as possible to minimise impact on your daily living if like us you are living in the property during the process. Essentially a team of 3/4 guys who are capable of doing most things however Dil does call in specialist trade as and when needed to ensure the job gets done in a timely manner, for my build he called in roofers and certified plumbers for the boiler. Only negative is that you have to watch the silicone sealant finishing which is not the tidiest but a minor in the grand scheme of things and if you don’t like something you simply have to say and he will redo within reason. Overall a very happy customer
Bolshoi Developments Ltd
Rating: 5 out of 5
Loft Conversion Company in Chiswick
Company specialized in the residential space going from rear extension and loft conversions to full refurbishments and new builds
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Latest review:
Loft Conversion- 14 Aug 2022
Thanks to Thomas, we decided not to do a loft conversion now and do a more upscale conversion once we have the budget. We first planned to do a small-scale conversion, but after consulting with Thomas, he suggested several plans, including upscale ones and recommended us doing an upscale one rather than the small-scale one. His recommendation makes sense, and we decided to follow his suggestion. I had a great discussion with him. He is very open, honest and trustworthy.
NLD Construction LTD
Rating: 5 out of 5
Loft Conversion Company in Chiswick
Hello, we’re NLD Construction LTD - a reliable construction company specialising in extensions, loft conversions, refurbishments and all general construction work. With 25 years of experience, we deliver quality results on time and within budget. Let’s get your project started!
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Latest review:
It has been a pleasure to work with Arbi and the team for my refurbishment. They have a very professional and efficient approach on all matters. The quality and reliability of the work is unmatched. Everything was completed accorded to plan and on time despite my last minute adjustments. I highly recommend the team at NLD.
S.J Shatri Construction Limited
Rating: 5 out of 5
Loft Conversion Company in Chiswick
I believe great service comes from professionalism, attention to detail, and genuine care for customers. I’m dedicated to delivering reliable results, excellent communication, and an experience that leaves clients confident they made the right choice.
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SRK Constructions London Ltd
Rating: 5 out of 5
Loft Conversion Company in Chiswick
We offer a plethora of construction services and are known for excellent k-rendering, electrical fitting, plumbing, and carpet service. We have been in the industry for more than 14 years and our work varying from small to large projects speaks about our experience in the field. We believe in creating with heart and building with the mind. We are trustworthy contractors and always strive to meet the quoted budget. Clients’ satisfaction is the topmost priority of the SRK constructions.
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Latest review:
Bathroom Fitting- 12 Apr 2022
Sandeep was the first builder who I ever met who finished job before time . His team has worked very hard and did job as per our expectations . Before this I used 3 different builders and no one finished job on time . I will recommend him for any building related job .
G&J Renovation ltd
Rating: 4.7 out of 5
Loft Conversion Company in Chiswick
G&J Renovations ltd provides best quality of work as extension refurbishment new build painting plastring loft conversion and all building work
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Latest review:
Restoration & Refurbishment- 4 Mar 2026
Gurpreet and his team done my whole house renovation. Including the kitchen roof, new ceilings, skim/plaster all rooms, new tiles and flooring, all new wiring for the house, change the boiler location and fitted a new boiler .. have absolutely loved this team, especially Gurpreet. . The guy is always there to answer and follow up on any work . The work has been completed to the highest quality and really a trusted and a professional team !!... Even after the work is done, there will be few things but you can contact Gurpreet and he will sort it out for you... Overall a great experience working with this team !! ..I will be looking to get this team for all my future works !!!
JKD building service
Rating: 5 out of 5
Loft Conversion Company in Chiswick
14 years experience with House extension, loft conversion, kichen, bathroom and many more.
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Latest review:
Bathroom Fitting- 22 Nov 2019
Perfect job and attention to detail. Wall & floor tiles look perfect. Very tidy, clean and hard working builder. Nothing seemed to be a problem. I also painted the wall. Love the bathroom now. Thank you !
PMK Electrical limited
Rating: 5 out of 5
Loft Conversion Company in Chiswick
NICEIC registered, fully insured. ELECTRICAL: Rewires, new installations, lights upgrades, fault finding, maintenance, testing and inspection. PLUMBING: Sanitaryware upgrade, leaks fixing, heating systems, drains, new installations, maintenance. HANDYMAN in the team.
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Latest review:
Electrical- 31 Jan 2025
Came in, discussed the job and a few little options. Got it done in a timely fashion. Cleaned up after himself. Offered help if I have any future issues with the charger. Excellent service and will definitely recommend!
CM Building LTD
Rating: 5 out of 5
Loft Conversion Company in Chiswick
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.
R.L. Carpentry & Building Work
Rating: 5 out of 5
Loft Conversion Company in Chiswick
Hello to All I`m Ralph. I have 20 years experience in construction industry. I`m kitchen installation specialist. Over the years I have been working on many kitchens supplied by B&Q, Ikea, Howdens, Magnet, Wren, Wickes, etc. I am multi skilled tradesman so I can provide wide range of service. Electric,plumbing,painting/decorating, carpentry 1st 2nd fix.I`m professional, honestly, trustworthy and polite person. Providing service on highest standard. I love my job so I`m happy during the work.
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Latest review:
Kitchen Fitting- 12 Oct 2025
Ralph did a great job and went extra.
KACA CONSTRUCTION LTD
Rating: 4.8 out of 5
Loft Conversion Company in Chiswick
Kaca construction Ltd is a prospective, family run building company based in London . We supply high quality services in residential construction field. We work closely with our customers, designers and architects to make sure we meet the clients’ expectations. We listen, understand and deliver what the client wants from the point of the planning to the point of delivering your dream home. Our team is offering all the general building work, we specialize in extensions, lofts, exterior and interior work. we have complete team of professionals including architects, engineers and designers to provide end-to-end services, also we can help with applications for the local authorities and building regulation services. All work is fully insured and guaranteed for your peace of mind. We pride ourselves in a great customer service and our reliability. So if you're looking for a construction company in London with many years’ experience in the construction trade then look no further than Kaca Construction Ltd. Whether it’s a query or a quote we would be very happy to assist you. We cover all London area and near by .
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Latest review:
Loft Conversion- 26 Nov 2020
I would highly recommend Kaca Constrution, Elson and his team were extremely professional, polite and the work was carried out to an excellent standard. I am extremely pleased with the result! I heavily researched builders before choosing Kaca Construction. The service was brilliant! The team always arrived on time and completed each stage of my project perfectly. This was the first building project that I have done (a loft conversion - hip to gable with dormer). Elson helped so much – from project planning, to connecting me with reliable suppliers - his advice was always reliable, clear and priceless. Elson was also very flexible, he always listened and tailored the project to my specific needs. I found him to be very knowledgeable and experienced. I highly recommend Kaca Construction and would definitely work with them again in the future. Excellent service and top quality work!
new vision construction(uk) ltd
Rating: 5 out of 5
Loft Conversion Company in Chiswick
New Vision Construction (UK) Ltd is committed to provide the highest quality professional construction services. This commitment can only be maintained through the efforts of its people. We provide quality construction services to our clients. The pride we have in our work enables our clients to enjoy the construction process with confidence.The craftsmanship quality we produce is visible in all our finished projects regardless of the projects size.
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Latest review:
Bathroom Fitting- 17 Jul 2020
Very professional & skilled builder. Aswell as a full bathroom refurbishment he took extra time on the small details to really make it a special end result. Me & my family are very pleased with Ranjits work. A very helpful and knowledgable man. Thanks Ranjit for a great bathroom for me & my family to enjoy.
Dave lofts
Rating: 5 out of 5
Loft Conversion Company in Chiswick
Thankyou for viewing 😊 A bit about myself •specialist in all types of carpentry •roofing work undertaken repairs or renewals • reliable & Trustworthy •Hardworking •friendly Always happy to discuss jobs and give professional advise Dave
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Latest review:
Carpentry- 28 May 2025
Dave did a great job, he was on time and very clean, did a very good job for us
Rayway limited
Rating: 5 out of 5
Loft Conversion Company in Chiswick
Over 15 years of experience in building and construction industry
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Latest review:
Restoration & Refurbishment- 18 Feb 2021
Ray was an absolute professional. He fitted a new downstairs toilet which required a new soil pipe and associated groundwork as well as new stud walling to partition the space. He did most of the work himself, but brought in others for the pieces where he wanted an expert. He was flexible to small changes and was happy to take on additional work when unforeseen issues were discovered. The areas he had worked in were quickly cleaned before he left each day. Overall the work was completed to a good quality and at a reasonable price.
Rutba design & build ltd
Rating: 5 out of 5
Loft Conversion Company in Chiswick
I provide complete building services like loft conversion, side & rear extensions, kitchen, bathroom, plumbing, underfloor heating, electric & driveways, painting & decorating etc.
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Latest review:
Absolutely great quality of work and outstanding service. Jagjeet and his team have done a great job without any delays. Honest and hard working. Very happy to recommend Rutba

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.