Loft Conversion Companies in Chiswick

Name: Loft Conversion Company
Brand: MyBuilder
SKU: loft-conversion-company
Rating: 4.3 (10 reviews)

Easily find verified Chiswick Loft Conversion Companies. Just post your job to get quotes from MyBuilder's Loft Conversion Companies in Chiswick.

Select a service

How it works

Post your job for free

Tell us about your job, and we’ll alert suitable tradespeople in your area. It’s simple and free.

Tradespeople respond

Once your job is posted, you’ll get responses from interested tradespeople through the website.

Review profiles and choose

Browse profiles, work history, and feedback, then choose who you wish to share your details with.

Some of our top rated loft conversion companies in Chiswick

1750 Results

Sort by:

Ogival Ltd
Rating: 4.5 out of 5
Loft Conversion Company in Chiswick
Ogival Ltd, located in North Kensington, is a trusted local builder with extensive experience. Your one-stop provider of home refurbishments, property modifications, and alterations What separates Ogival from our competition is our exceptional service and support. We thrive on being a unique, personable company because building trusting relationships with our customers ensures a successful and enjoyable renovation project. We offer a full range of building services, from major rebuilds to smaller jobs We offer a 6-month Warranty on labour.
Get in touch
Latest review:
I have used this company for years for many different jobs including painting my whole house, tiling my bathroom, laying flooring, astroturfing my garden and also putting up fences too, they are very knowledgable, professional and polite, the work is always done efficiently to a very high standard and I’ve never had an issue. I recommend Emanuel and his team to everybody. If you want a company that care, I’d stick with Ovigal!
Wall Done SP
Rating: 5 out of 5
Loft Conversion Company in Chiswick
We believe your home should evolve with your lifestyle. Whether you're expanding your living space with a loft extension or completely renovating your property, we turn your ideas into reality.
Get in touch
Luz Vargas Architects
Rating: 5 out of 5
Loft Conversion Company in Chiswick
We achieve high standard construction projects by overseeing all our projects from start to finish in a professional manner and ensure that the construction phase of the project runs as smoothly as possible, to complete on time, and to give the client good value for money.
Get in touch
Latest review:
We were very happy that we chose Luz for the job. Her experience and insight helped us to make some difficult decisions about how to subdivide the space. Among the suppliers that we spoke to, her solution was unique. We would definitely recommend her and use her on future projects. Patrick & Inji.
HOAM BUILD LTD
Rating: 3.5 out of 5
Loft Conversion Company in Chiswick
At HOAM BUILD we have a genuine passion for constructing beautiful spaces. We build relationships with our clients and work collaboratively to create a home that you will love and be proud of. We are a female owned, custom home renovation company, driven to deliver quality over quantity which is what sets us apart from volume builders. Quality is embedded in everything we do, it’s habit and because of that, we have built a reputation for attention to detail, innovation and solution focussed thinking for our satisfied customers which has generated a large amount of repeat and referred business. Our core values remain very much embedded in the idea of investing in relationships, listening to our clients and working towards a common goal. Every project is treated with professionalism, dedication, attention to detail and care, with customer satisfaction being our first and ongoing priority. We pride ourselves on working with you as a true construction partner and delivering high quality projects on time and within budget.
Get in touch
Latest review:
We selected Hoam Build following several quotes from local builders. Deciding factors were their quote was competitive, their general responsiveness and their flexibility. The work was completed within budget and to a high standard. We were so impressed they have now completed three additional pieces of work and a fourth is planned for 2026.
Ewan Park
Rating: 5 out of 5
Loft Conversion Company in Chiswick
Hi, My Name is Ewan and I am originally from North Yorkshire. I am Well Skilled in all areas of Property Development, Extension and Conversion. I take great pride in all my works and that of those that may work with me. My Pricing is Fair and I don't inflate a construction price just because of a post code. I like to think I have some intelligent Banter but I will leave that assessment to you. Look forward to working with you.
Get in touch
Latest review:
Windows & Doors (uPVC & Metal)- 4 Feb 2019
very good high quality very professional friendly service,one very satisfied customer
Zebra Property Limited
Rating: 5 out of 5
Loft Conversion Company in Chiswick
Looking to increase space within your property, restructure the layout, a new bathroom/kitchen or just re-decorate. We do it all. We have put in basements, loft conversions, side returns and even a swimming pool. We provide a 'do it all' service at the highest of qualities for all our clients.
Get in touch
Latest review:
Restoration & Refurbishment- 20 Jul 2015
We hired Zebra Property for a complete strip out and refurbishment of a GF flat. The JOB: The job included initial removal of existing bathroom, kitchen and flooring. The works itself were for a side return wrap around kitchen extension, basement refit, installation of new kitchen and bathroom, new windows (including velux) and bifold doors, tiling and complete decoration throughout. FEEDBACK: Zebra were a great company to work with on this job. Communication levels were clear. There were inevitable delays to the project but there was always a focus to get back on track and deliver as quickly as possible. The resulting finish is a high standard throughout the property, with any minor snags completed quickly. Thank you!
MAT9 Construction Ltd
Rating: 5 out of 5
Loft Conversion Company in Chiswick
I am a builder for 20 years. My speciality is it refurbishment of residentials as well as commercial projects,house extensions, loft conversions, decorating, bathrooms fit outs ,kitchens designs and instalations, suspended mf ceilings, grid and metal panels ceilings, partition walls, internal and external cladding, glass walls, flooring (laminate, wooden,decking, tiles), roofing (flat roofs, cut roofs), timber frame structures (garden sheds, garden houses, garden offices, garages.)
Get in touch
Latest review:
Carpentry- 17 May 2019
Tom and his colleague Konrad were fantastic They came round 3 times prior to undertaking the work to discuss exactly what we wanted To achieve and meticulously planned it out. They were prompt on the delivery of the work and even came back twice after to ensure the painting was perfect. On top of this they are both absolutely top guys who were easy to get on with and very transparent regarding costs We’ve already booked additional work and would highly recommend these guys to friends and family. Can’t speak highly enough about them Many thanks Chris
Prodec Construction ltd
Rating: 5 out of 5
Loft Conversion Company in Chiswick
With over 16 years experience our reputation has developed very soundly as a specialist building contractor. We work on many types of projects including domestic houses, health care sector, and housing developers. Our service is designed around delivering the highest standard and quality.
Get in touch
Latest review:
Painting & Decorating- 18 Jun 2025
Martin has done an excellent job for us. He is professional, polite and helpful.
MW Home Improvements Limited
Rating: 5 out of 5
Loft Conversion Company in Chiswick
We are doing all types of house refurbishments and improvements. No job is too big or small for us. Skilled handiwork on high standard.
Get in touch
Latest review:
Bathroom Fitting- 10 Jan 2023
Martin was very thorough from the beginning when giving me my quote. He did a very thorough job of making sure everything was to my liking. I cannot fault the quality of the work, my bathroom looks excellent! Martin is a really friendly guy and is very knowledgeable and was able to guide me when I did not understand. I would recommend him to anyone.
Tawfik Werfalli
Rating: 5 out of 5
Loft Conversion Company in Chiswick
At Miko Construction, we specialise in high-quality residential refurbishments, extensions, and fit-outs. We’re a small, experienced team that takes pride in delivering well-crafted work with clear communication throughout. Whether it’s a full home renovation or a bespoke interior project, we bring a personal, hands-on approach from start to finish.
Get in touch
Latest review:
Tawfik’s team was very professional and very knowledgeable, they done a great work including helping me with the design and understanding the process required to complete a project at this size, he completed the electrical work tested it and also included great ideas with the LED lights that made A beautiful design at the end, he also recommended a lot of subcontractors in the area are very competitive in their price and practically manage the project with me from inception to completion.
KEVIN CONSTRUCTION SOLUTIONS LIMITED
Rating: 5 out of 5
Loft Conversion Company in Chiswick
Kevin Construction is a London-based, well-organised construction company specialising in large-scale developments alongside leading UK firms. We offer a full suite of services—from extensions and conversions to structural alterations and landscaping. With a dedicated team, digital management tools, and a focus on quality, we guide every project from planning to successful completion.
Get in touch
Latest review:
Fencing- 13 May 2026
Kevin turned up on time and did a solid job on my fence. Would use again
W5 Construction ltd
Rating: 5 out of 5
Loft Conversion Company in Chiswick
I am Robert Kaminski, and founded W5 Construction Ltd in 2012. My team and I have several decades of experience in construction, and are specialists in helping domestic customers maximise their existing space. We are based in Ealing and cover all areas of West London. We take pride in exceeding our client's expectations, managing your project from start to finish, allowing you to have a stress free experience.
Get in touch
Latest review:
Restoration & Refurbishment- 6 Aug 2020
Great job done. The guys were very hardworking and the finish is to a very high standard.
Buildmore Homes Ltd
Rating: 5 out of 5
Loft Conversion Company in Chiswick
We are a construction company based in Bayswater , with over 15 years of experience in construction, we can handle anything.Make your house become a home and be one of ours happy customers. We take pride in our workmanship and 100% customer satisfaction is our priority. We will try our absolute best to eliminate any unnecessary inconvenience and provide to our client with a positive building experience.
Get in touch
Latest review:
Plumbing- 1 Oct 2018
Marcos, came to replace my basin sink tap and box in some pipe work. reasonable price and good quality workmanship. he prompt on arrival very reliable and would use his services again. A++ my builder
Mr Syed Zaidi
Rating: 5 out of 5
Loft Conversion Company in Chiswick
We carry out all types of building work to a very high standard. We pride ourselves on our friendly team and can do attitude. We will treat your home Like ours and make every effort to you updated before, during and after the works. We are extremely hard working and always give 100% on each job we undertake.
Get in touch
Latest review:
Fencing- 1 Aug 2026
Excellent service from start to finish. Communication was clear, friendly and reliable throughout, and the team replaced all 14 broken fence panels quickly and to a high standard. They worked efficiently and left the garden clean and tidy afterwards. I am very pleased with the result and would highly recommend them.
Bubble.Build
Rating: 5 out of 5
Loft Conversion Company in Chiswick
Studio Bubble We specialise in delivering High Quality Architectural services. Our young experienced team of Architectural technicians can help you with all your drawing requirements for a low cost. We specialise in assisting you with you with Planning applications and documents that will help you with quotations for contractors.
Get in touch
Latest review:
Having a good set of detailed drawings which covers all areas from the start of the job makes my life so much easier and the job run so much smoothers, Callum was very helpful from the start through to the end. I will 100% use him for all my work in the future and I will certainly recommend!
CJ Carpentry
Rating: 5 out of 5
Loft Conversion Company in Chiswick
We are joiners by trade, passionate on what we do over the years. We have combined over 32 years of experience on carpentry/joinery itself. As there is always demand, we started delivering any type of construction work, full house refurbishment, kitchens, bathrooms etc. Always preserving our high quality of work, honesty, professionalism. Fully committed to anything we can come across, always find clients, architects solutions so we can achieve everyone’s dream, expectations.
Get in touch
Latest review:
Carpentry- 18 May 2022
Very professional and friendly tradesman. Work was carried out perfectly and I couldn't recommend him high enough. Brilliant work ethic and he went the extra mile to carry out the works impeccably. Privellage to work with him.

4.3

Top rated Loft Conversion Companies

Our Loft Conversion Companies in Chiswick, are rated 4.3 out of 5 based on 10 reviews from customers like you.

Quality screening

Easily find verified local tradespeople. Just post your job to get quotes from tradespeople near you across the UK.

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.