Loft Conversion Companies in Chiswick

Name: Loft Conversion Company
Brand: MyBuilder
SKU: loft-conversion-company
Rating: 4.4 (11 reviews)

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Some of our top rated loft conversion companies in Chiswick

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Pine Construction Ltd.
Rating: 5 out of 5
Loft Conversion Company in Chiswick
As a civil engineer and principal building contractor we consult, design, construct and project manage any dwelling and commercial projects from minor repairs to complete new-build as well as any type of restoration/renovation and basement construction projects.
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Latest review:
Extensions- 19 Oct 2017
The best team in London to work with they are highly skilled professionals and very easy to work with looking forward to work with them again
M j design and building ltd
Rating: 5 out of 5
Loft Conversion Company in Chiswick
Construction.
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Latest review:
Loft Conversion- 27 Sep 2020
I met Jay for the first time on mybuilder.com; my job, roof extension received a huge interest; Jay was one of the first that came to discuss and he had one of the best quotes; although we discovered in the last second that the structural calculations were different from what actually the structure is, he was not afraid to get involved, and we worked along the engineer all the way through; his attitude and his team attitude was professional from day 1 until the end; the team came every day at the same hour and they were working really hard; in fact after just 1 day, the old roof was off, new structure was on with a rain proof cover; this thing told me from day 1 how professional and hard working they are and confirmed me that he was the right choice; the extension was done in half time just as a confirmation of above; they accommodated all my requests (like fitting air con pipes); the end result was great, or even better than expected; I truly recommend him and would certainly work with him in future projects.
Archdom.ltd
No reviews yet
Loft Conversion Company in Chiswick
We are a design and build company with expertise in architectural, interior design and construction. Offering a complete service from design to final build. We develop the full potential of your space and build it to perfectly match our design.
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London sky construction
No reviews yet
Loft Conversion Company in Chiswick
Dear customer I happy to introduce my self , I do all domestic and commercial construction job , new build , full refurbishment include electricity, plumbing, carpenter , flooring, decorating, tile work , roofing , gardening and structure job as well . Our objective to satisfy the need of the client to get the maximum benefits that he can get it from the project . Our quote is realistic and competitive price according to the market .
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Newspace Interiors
No reviews yet
Loft Conversion Company in Chiswick
Newspace Building services specialist in Full House Refurbs Full Bathroom Renovation & wetrooms Kitchen Extensions & Lofts conversions Painting and Decorating
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house convert ltd
Rating: 4.6 out of 5
Loft Conversion Company in Chiswick
We have the manpower and ability to undertake jobs small or large. With a combined 30 years experience, we are a company that distinguishes itself with its close approach to the clients and their needs. When it comes to extensions and loft conversions, we bring a unique craftsmanship and use only high-quality materials to give you the best results. From simple changes to major renovations, we have your needs covered.
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Latest review:
Conversions - General- 22 Feb 2020
Quoted £500 to remove small kitchen wall (<1m wide), make adjacent wall good, and move light switch. Removed wall, moved switch, and kindly moved fridge. Said he'd return to make wall good. On two occasions I arranged to WFH and he failed to show up or let me know. On multiple occasions he said he might be able to do a day but then didn't confirm. He did come by when we weren't in one day to drop wood off to cover wall gaps. One day I arranged for our dog walker to be in at 1. She waited until 3. I messaged Daniel later to ask what happened. He apparently came at 1.20 and waited for 15 mins. I believe he turned up and our dog walker didn't hear door but it's unlikely he tried to knock multiple times over 15 mins, as she was listening for him. Agreed he would finish work in new year. In Jan again failed to confirm days/times on multiple occasions. Finally agreed noon on a Sat. Failed to show up/respond to messages. Eventually got through to him - said his phone was broken. No explanation re why he didn't show up. Agreed he'd come the next Sat but no show again. No response to message or to later one asking if he planned to finish the job. Received a missed call but nothing further. I've left it a month as hoped he would get in contact. It's clear he has run off with £500, leaving giant holes in wall. I work long hours and weekends are precious. I have no patience for someone who has no respect for my free time, or for fact it's not possible to WFH all the time.
Bizy Construction Ltd
Rating: 5 out of 5
Loft Conversion Company in Chiswick
Welcome to Bizy Construction ltd, a construction company located on the western fringe of Greater London, committed to delivering an exceptional service on budget and on time. We have a dedicated team committed to delivering exceptional New Build, House Refurbishments, House Extensions, Loft and Basement Conversions to a specific budget, while ensuring we meet our clients' expectations.
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Latest review:
Extensions- 3 May 2022
Job done by Bizy Construction Ltd, Was done to the highest standard every team member was very polite and helpful. All the work was done using in house trade person nothing was contracted out so all the work went very smoothly. New kitchen/rear extension excellent. My wife and I are very pleased with all the work done by Bizy Construction Ltd, and would use them again. We would recommend them to anyone who need a reliable building/construction company. Zied was excellent give us advice and idea as if he was a private adviser. Which we appreciate and valued I can’t praise the workmanship enough or find any thing to complain. Thank the team that work on my property.
Statecraft Building Ltd.
Rating: 5 out of 5
Loft Conversion Company in Chiswick
We strive to provide the best building services posible within and outside London. Our company has been built on continuous recommendation, repeat custom and quality workmanship. We offer full building services and you can be sure we`ll take care of the job.
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Latest review:
Milen, initially came as I had a leak in my ensuit where the tiles had lost their grout. He was very honest in giving me advice, and regrouted at a very reasonable price. He then came a month later to remove the tiles in the shower and replace the plaster protection board, then retiled. He purchased all the products and gave me advice on the most valuable sustainable tiles. The work was carried out a to very high level, I would most definitely hire Milen in the future, and highly recommend him.
Mariusz Moniuszko
No reviews yet
Loft Conversion Company in Chiswick
I have had a registered general contracting company since 2004. I have also achieved Master Builder status
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Skillco Limited
Rating: 5 out of 5
Loft Conversion Company in Chiswick
Transforming spaces with precision and flair! Our expert team delivers flawless finishes, vibrant colors, and impeccable attention to detail. From residential to commercial projects, we bring your vision to life with professionalism and a commitment to excellence.
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Latest review:
Sharne did a great job and would recommend to others.
Robert
No reviews yet
Loft Conversion Company in Chiswick
I am an experienced construction worker based in Ealing Broadway, London, with 25 years in the industry. I specialize in complete bathroom installations and tiling, including preparation, waterproofing, fitting sanitary fixtures, and high-quality finishing. I am reliable, punctual, and focused on delivering durable, precise work that meets clients’ expectations.
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Douglas carpentry and building
Rating: 4.9 out of 5
Loft Conversion Company in Chiswick
Douglas carpentry and building has over 10 years experience in all aspects of building work. We as a company have very high standards to accommodate all your building work needs from internal doors, skirting, architraves, built in wardrobes to all general building work. Hard working, dedicated, reliable, clean and tidy and here to give you a fair and honest quote. Please look at previous work on my Instagram page @douglascarpentry23
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Latest review:
Carpentry- 14 May 2026
Replaced a rotten external single door. The existing door frame was reused, as per request. This frame wasn't perfectly square which Alex had to compensate for. Alex arrived on time and completed the work without any unresolved issues, taking all offcuts and old door away for disposal.
Gs uk construction ltd
No reviews yet
Loft Conversion Company in Chiswick
First of all I will talk very politely all customers and second thing is I will give good price for every customer and and i will give discount
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M&D BUSHATI BUILDERS LTD
No reviews yet
Loft Conversion Company in Chiswick
We do general builder jobs, We are respectful, serious and professional.
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BSM Interior Ltd
Rating: 4.9 out of 5
Loft Conversion Company in Chiswick
Your search for qualified and skilled builders ends here. Made Construction Simple is a team of licensed and insured specialists builders in London with over one decades of combined experience. From extensive loft conversion, extension,refurbishments to bathroom and kitchen renovations, we offer a wide range of services. You can rest assured that we have the expertise to efficiently handle your construction project. Good and dependable work isn’t possible without the necessary qualifications. Every professional on our team is qualified and highly experienced. We undertake all aspects of planning, building and construction services according to the highest standards of workmanship. We prioritise quality, safety and consistency at every step of the way. Our services are compliant with local authority laws and government regulations. We pride ourselves on our exceptional attention to detail. In addition to superior functionality and durability, we don’t forget about how the final result looks. We strive to deliver the best of structural integrity and aesthetics.   Our professional builders go above and beyond to earn your trust. We are dedicated to starting and completing jobs on time for 100% customer satisfaction. If there are any unforeseen delays, you will be promptly informed and kept in the loop. We also ensure that every project is within the specified budget.
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Latest review:
Carpentry- 26 Aug 2025
Great experience with Bled. Would recommend!
Adrian kercuku
No reviews yet
Loft Conversion Company in Chiswick
I have a wealth of experience in house refurbishment and have successfully accomplished a myriad of projects over the past few years, adhering to safety standards and meeting the client's timeline and budget while maintaining the highest standard of quality. I am confident I can provide a successful and satisfactory outcome for any house refurbishment project.
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4.4

Top rated Loft Conversion Companies

Our Loft Conversion Companies in Chiswick, are rated 4.4 out of 5 based on 11 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.