Loft Conversion Companies in Brentford

Name: Loft Conversion Company
Brand: MyBuilder
SKU: loft-conversion-company
Rating: 4.2 (9 reviews)

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Some of our top rated loft conversion companies in Brentford

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Landmark builders
Rating: 3.5 out of 5
Loft Conversion Company in Brentford
I am very disciplined with my work and i do all my job with patience and persistence so than i can do excellent work.Moreover i do all of my jobs with confidence, style as well as with the creativity. We provide various kind of construction services like painting and decoration, Demolition, Gardening, Flat roofing, Guttering, fencing, cleaning and Rubbish clearance
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Latest review:
Plumbing- 9 May 2025
I’m very disappointed with the service I received. I initially hired you to fix a leak, but the same issue reoccurred just a month later. When I contacted you, you said will go on a Monday and didnt turn up, when I sent you several messages after a week you said you were in the hospital, which I completely understood and respected. However, weeks later you promised to return on a Thursday to check the problem, and you never showed up or contacted me to explain. Since then, you’ve ignored my messages entirely. This lack of responsibility and communication is unacceptable, especially when dealing with ongoing issues in someone’s home.
NLD Construction LTD
Rating: 5 out of 5
Loft Conversion Company in Brentford
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.
TEDDINGTON.BUILDS LIMITED
Rating: 5 out of 5
Loft Conversion Company in Brentford
All types of construction works; extension, loft, kitchen, bathroom, shower, toilet,boiler,heating ,plumbing , job with you home, or apartment.Thank you
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Latest review:
Thanks so much Yuriy and his team TEDDINGTON BUILDS for providing fast and professional services. It was important for me to get my bathroom done according to deadlines and invoices. I am glad that I listened to advice of my neighbors and chose this company! High-quality, reliable and fast!
Gajan
Rating: 5 out of 5
Loft Conversion Company in Brentford
When you want to quality work then call me, I'm a Qualified electrician
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Latest review:
Electrical- 11 Aug 2025
Gajan did a brilliant job, went above and beyond what was expected. Very polite, turned up on time. Would highly recommend.
Loftxtnd Limited
Rating: 5 out of 5
Loft Conversion Company in Brentford
Hello! We are offering full range off work:full refurbishment,loft conversion,house extensions,driveway!
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Latest review:
The project lasted from July 2023 to Feb 2024 and comprised of: 1. Single story rear extension with new kitchen and underfloor heating 2. 75m2 patio 3. Internal reconfiguration including removal / installation of walls, new flooring, plumbing (including new boiler), new door frames, doors and skirting, redecoration, carpentry for cupboards 4. Ventilation of existing roof The team are both friendly and professional with Alin always on hand to manage any questions / situations as they arise. The work is clearly costed and every two weeks a valuation takes place to ensure transparency of work undertaken both in original scope and any extras. The quality of the build was excellent, something the building inspector commented on. Alin was recommended to me based on past work, and I in turn would highly recommend him.
Vadet Construction
Rating: 5 out of 5
Loft Conversion Company in Brentford
With over 20 years of experience in the construction industry. We provide high-quality services covering everything from strip-out to brickwork, electrical, plumbing, carpentry, tiling, plastering, flooring, and painting, leaving a tidy, clean site.
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Latest review:
Bathroom Fitting- 20 Jul 2026
We hired Vasile and his team in May for our bathroom refurbishment, and were relieved he could also handle painting and floor sanding. His organisational skills took pressure off us, managing works and trades seamlessly. He impressed us from the start with his attention to detail and despite a tight schedule, Vasile had no problem accommodating our needs. When further issues emerged mid-project, Vasile handled the added time and cost pressure with calm and professionalism and managed disruption to neighbours tactfully. He always offered smart solutions that balanced technical skill with aesthetics and had a can-do attitude. His team was equally great — experienced, careful with our flat, tidy, and respectful of communal areas. We couldn’t be happier with the results! He took real pride in his work, was patient throughout, and was always present for advice and guidance which we really appreciated. We felt in great hands from start to finish — highly recommended. Thank you!
Isher roof ltd
Rating: 5 out of 5
Loft Conversion Company in Brentford
*New roof *Roof repair *Flat roof *Slate roof *Chimney repair *Lead work *Guttering *Fascia & Soffit *Velux windows *Loft insulation *Loft boarding *Loft ladder
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Latest review:
Roofing (Pitched)- 14 Jun 2026
They made two visits first visit was to check and give an estimate they went up on a ladder moved some tiles to examine the damage and then they gave me three choices of action I opted for the replacement roof complete which they did they took the job they arrived on time were tidy professional clean and polite. Their price was competitive i highly recommend Isher roof ltd and the team. Thank you all for a job well done I shall and will be sure to use them in the very near future.
crownbuilders
Rating: 5 out of 5
Loft Conversion Company in Brentford
we are a genral building company we carry out all the trades within the construction of works single double extensions loft conversions Underfloor heating Megaflow systems bathrooms kitchens all work can be viewed any time all certificates on completion of works
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Latest review:
Windows & Doors (uPVC & Metal)- 12 May 2016
Peter is very friendly and is a great communicator. He gives you a detailed breakdown of the job and will advise if he thinks there is a better and cheaper way to do something.
Actonstruction
Rating: 4.1 out of 5
Loft Conversion Company in Brentford
Actonstruction as one of the premier builders in London carries out all aspects of building work including extensions, loft conversions, renovations, roofing, joinery and much more. We are focused on providing high-quality service and customer satisfaction.
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Latest review:
Loft Conversion- 14 Jul 2014
Very happy with the work. Hard workers and very tidy. Recommended!
KEVIN CONSTRUCTION SOLUTIONS LIMITED
Rating: 5 out of 5
Loft Conversion Company in Brentford
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.
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Latest review:
Fencing- 13 May 2026
Kevin turned up on time and did a solid job on my fence. Would use again
Blueprint Developments Limited
Rating: 5 out of 5
Loft Conversion Company in Brentford
Welcome to Blueprint Builders, where your dream space becomes a reality. Nestled in the heart of London, our team is at the forefront of design and construction innovation. We specialize in transforming spaces into luxurious living experiences, with services that include: - Elegant House Extensions - Meticulous Loft Conversions - Comprehensive Renovations - Bespoke New Builds And a wide spectrum of commercial and domestic building projects designed with your luxury and comfort in mind. At Blueprint Builders, your satisfaction is not just a goal—it's our promise. We're dedicated to bringing smiles to our clients faces through meticulous attention to detail, unparalleled craftsmanship, and a seamless client experience from start to finish. Stay connected with our journey of transformation on Instagram @blueprintbuilder. Follow us for a regular dose of inspiration through updated photos of our latest projects. Dreaming of a space makeover? Don't wait any longer. Contact us today for a complimentary site visit and a personalized quote. Let's make your vision a living, breathing reality.
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Latest review:
We recently had our 3-bedroom house renovated, along with a new rear extension build and a garage conversion, and I couldn't be happier with the results. The team demonstrated exceptional craftsmanship and attention to detail throughout the project. From the initial consultation to the final handover, they were professional, reliable, and transparent about costs and timelines. The renovation completely transformed our home, enhancing both its functionality and aesthetics. The rear extension seamlessly integrates with the existing structure, creating a spacious and light-filled living area, while the garage conversion provides a versatile space we can now use as an office. The team was approachable, accommodating any changes we requested during the build, and always left the site clean and organized at the end of each day. I was particularly impressed with their ability to stay on schedule despite some challenging weather conditions. If you're looking for a dependable team that delivers quality work, I highly recommend Blueprint.
JS CONSTRUCTION BUILDING SERVICES LTD
Rating: 5 out of 5
Loft Conversion Company in Brentford
Ive been working as a Builder in UK for over 20 years now doing all variety of jobs through the time. Im based in West London but me and my team can travel almost anywhere to get the job done. Like i mentioned through out the time i did all kinds of jobs from building houses from zero to small jobs as bathroom fitting or refurbishing. With my team i always try to make sure to fulfil needs of my customers. We are reliable.
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Latest review:
2 major projects: upgrade to our home and rental property over past year included: substantial extension, new kitchen, renewed plumbing/electrics, complete redecoration and external thermal cladding. Final costs as per original quote. Work of a high standard carried out on time. Honest, professional and easy to deal with. Will use them again. Highly recommended.
aman building services
Rating: 4 out of 5
Loft Conversion Company in Brentford
Aman Building Services pride in quality and satisfaction. We have been set up since 2009 and provide the following services; Driveways, New Build, Carpentry, Bathroom, Kitchen, Bedroom fitting, Loft Conversions, Metal Gate services, Plastering, Tiling, Roofing, Guttering, Porch, Plumbing and Heating, Painting, Glazing, Electrical, Landscaping, Garage/Outbuildings. We can also assist with Architect and Buildings Regulation services. NO JOB IS TOO SMALL
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Latest review:
Restoration & Refurbishment- 19 May 2024
Work completed yesterday
SS ROOFING SPECIALIST LIMITED
Rating: 5 out of 5
Loft Conversion Company in Brentford
At SS Roofing Specialists LTD, we provide professional roofing and building services across all over the UK. Whether you require a full re-roof, a small roof repair, flat roofing , Chimney repair, Gutter installation, Pointing ,our experienced team is ready to help. As fully insured company, we give our clients confidence that their property is protected throughout the process. From the initial consultation to the final handover, we take pride in delivering an efficient, professional and approachable service. At SS Roofing Specialists Ltd, we believe in building lasting relationships through exceptional craftsmanship and dedicated service. Your satisfaction is our top priority, and we aim to exceed your expectations on every project.
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Latest review:
Roofing (Pitched)- 19 May 2026
Quick and came round same day. Unfortunately one of the jobs they did on the roof was not done properly and it’s still leaking.
Livinroom Developers Ltd
Rating: 5 out of 5
Loft Conversion Company in Brentford
Our expertise lies in project management of loft conversion and kitchen extension which is carefully coordinated to ensure a seamless and integrated package service from start to finish. Our role is to be the single point of responsibility taking the burden off the client. This includes managing what are often complex building processes from inception through to completion and hand over.
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Latest review:
I recently completed the building of an orangery extension (with skylight) to my semi-detached townhouse in NW London. The extension was to be used as a new kitchen while the existing kitchen converted to a living room. I awarded the contract of building the extension to Anthony and I was pleasantly impressed with the quality of work delivered. Anthony Project Managed the entire process from beginning to end and ensured that all my expectations were surpassed. His hands-on attitude to every detail of the work was quite reassuring. I am glad to say that Anthony and his team are very good professionals and they delivered the project on time and within budget, even going over and beyond the original scope of works in order to ensure that all my latter requests were addressed appropriately.
A S Builders
Rating: 5 out of 5
Loft Conversion Company in Brentford
We are a family run business in construction industry since 1990, initially started by my father and now his sons have joined the business and looking to revitalised the business through the use of up-to-date technology. We undertake all types of building work through our team of skilled labour from a small job up to New Build. Our most recent job was conversion of a detached property to 7 HMO's.
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Latest review:
Extensions- 29 Apr 2026
Heera, Jagthar and team was my first personal experience with builders. Let me tell you, it was a pleasure to have them do our porch and other renovations in the house. They are so courteous, hard working and provided a great service. Firstly, I had a comprehensively written quote breaking down all of the steps required. Heera then ensured to keep me in the loop of any developments/any changes of plan required, outlining the reasons why and options, making it easy to understand and work together to completion. Their finish was to a high quality and they would always go the extra step to ensure this. I highly recommend AS Builders for any job and will definitely use them again in the future, and would recommend to my friends and family also. If you are considering them, grab a free quote and go from there... That's what I did! Thank you AS Builders for our renovations!

4.2

Top rated Loft Conversion Companies

Our Loft Conversion Companies in Brentford, are rated 4.2 out of 5 based on 9 reviews from customers like you.

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What services are offered by loft conversion companies in Brentford?

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

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 Brentford loft conversion company.

Find a loft conversion company in Brentford 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 Brentford.

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 Brentford can view your job and register their interest.

Step 2: Review and compare Brentford 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 Brentford 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 Brentford 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 Brentford

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 Brentford?

A local loft conversion company in Brentford 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 Brentford 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 Brentford 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 Brentford

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 Brentford before agreeing to start the work.

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

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