Loft Conversion Companies in Walham Green

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 Walham Green

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PB Solutions
Rating: 5 out of 5
Loft Conversion Company in Walham Green
PB Solutions has over 15 years in construction industry and offers its customers a number of trades. We take pride in our work and have excellent feed back from costumers. We offer competitive prices in comparison for the quality of work. We offer advise to clients as well as solutions to any size or complexed project.
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Latest review:
Kitchen Fitting- 13 Dec 2025
Paulo and team came to help me renovate my kitchen, they've done an amazing job on a very old kitchen with many deeply neglected issues including having been flooded several years ago. Excellent quality of work, very skillful - I am a bit of a perfectionist. They were sensitive to my budget and helped me source the best deals on units and advised me on what worktops to get and always available with advise and guidance that was honed with decades of experience. I felt they took on the job as if they were working on their own house - getting the best materials and work done within the budget. Paulo and team worked very hard and I felt they took care of every little detail, checking with me what I wanted and gave me options while pointing out the pros and cons with patience and good nature. 10 out of 10!
City Building & Design
Rating: 5 out of 5
Loft Conversion Company in Walham Green
Team of builders, decorators,Tilers, electrician and plumbers offering general building work In central & North london. We offer Bathroom & Kitchen installation. Painting & Decorating. Tilling & plastering Wiring & electrical work Plumbing and central heating General building maintenance
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Latest review:
Bathroom Fitting- 24 Apr 2024
Really happy from start to finish. Hamid and his team were a pleasure to deal with. Super polite and considerate, excellent communication and we’re really happy with our new bathrooms and closets. Would definitely recommend and use again for our next project.
UKA HOUSING SOLUTIONS
Rating: 5 out of 5
Loft Conversion Company in Walham Green
Our company specialises in the design and installation of custom and high-quality loft conversions and house extensions across London and the M25. While offering a personalised service, we bring the skills and experience required to ensure your loft conversion is completed to the highest standard and agreed timeline. Whether you are looking to add value to your property or create more space, our team will handle everything from planning permission to architectural design and construction
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Latest review:
Loft Conversion- 1 Aug 2025
Sami completed our loft conversion to a high standard, on time and within the agreed budget. He was respectful, supportive, and very knowledgeable. He offered helpful input and practical suggestions throughout the project. When I came up with ambitious design ideas that would have cost a fortune, he provided honest, pragmatic advice and suggested smart, cost-effective alternatives that saved us a lot of money. He communicated clearly, was easy to work with, and kept everything running smoothly. He also recommended trusted tradespeople when needed, all of whom did excellent work. In addition to the loft, Sami and his team completed other jobs around the house with the same high standard and care. I wouldn’t hesitate to recommend him — reliable, skilled, and genuinely committed to quality. A fantastic builder who takes pride in his work and delivers results you can trust. We’re absolutely delighted with everything he’s done.
Rose Projects
Rating: 5 out of 5
Loft Conversion Company in Walham Green
At Rose Projects we build to your lifestyle, A family run business with a fresh approach covering all aspects of Construction. Craftsmanship is our main focus always maintaining high standards. We work along side Architects, Engineers and Designers We have an organised team of qualified tradesmen which take pride in there work with projects completed on time and budget. References available upon request, Come and see previous projects for ideas.
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Latest review:
Extensions- 26 Sep 2022
Excellent work with the garden office/gym. Finished really nicely and exactly what we were looking for. Took quite a while but well worth the wait. We requested a labour quote and worked with Alf on a receipts basis for material and other costs. This worked out perfectly for us both. Alf's initial estimate of the materials cost was virtually spot on, which is very impressive given the inflation rate for building materials. Thanks again for all your hard work!
Alpha Projects
Rating: 5 out of 5
Loft Conversion Company in Walham Green
I am a construction professional with a well-rounded background that spans from domestic refurbishments to super-prime residential projects. I began my career working on smaller projects such as bathroom and kitchen refurbishments, loft conversions, and house extensions, gaining hands-on experience in every stage of the build process. Over time, I progressed into managing and delivering high-end and luxury residential refurbishments, where precision, detail, and client expectations are at the highest level. My blend of architectural training and on-site experience allows me to approach projects with both design sensitivity and practical efficiency. I am skilled in budget management, construction programming with Powerproject, and the use of digital tools including Bluebeam, AutoCAD, and Revit to coordinate and deliver work to the highest standards. Whether working on a bespoke renovation or a large-scale development, I am committed to providing quality workmanship and a seamless client experience.
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Latest review:
We are absolutely thrilled with our recent kitchen renovation! The entire process, from start to finish, was incredibly smooth and efficient, issue that did arise were handled efficiently. The workmanship is truly top-notch, with every detail handled with precision and care. The team completed the project within an reasonable time frame and the quality of the final result has completely transformed our home. Thank you again to Umit and his team at Alpha Projects!
CHIRO Alliance Limited
Rating: 5 out of 5
Loft Conversion Company in Walham Green
Chiro Construction covers all types of building work including major renovations, lofts, extensions, commercial conversions and bespoke carpentry. We manage all aspects of the build from inception to completion, from demolition to decorating. With a proven track record of delivering a wide range of high-end projects, we have a 98% approval rating from over 50 positive reviews. Most of our work comes from previous client referrals. Call or email us today for a chat to discuss your project.
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Latest review:
Restoration & Refurbishment- 4 Sep 2020
Octavian is a really great guy, very reliable, never disappoint, maintained good communication with us all the time. As a customer, obviously the most important part is great craftmanship, we have used other teams before and you can easily tell the difference between his work and the others. From things such as painting (you can tell they have paint and sand multiple times to provide such great finishing), tile installation (the gap between each tile is tiny, and they are very flat), Octavian’s team can get them all done. This job involves a full flat refurbishment, so the flat was completely stripped, knocked down a few walls, install new pipes / wire etc. During his work he has spotted many things that we have not noticed before. Unlike some other contractors who do not care, they will just finish what they were asked to do and leave. Octavian spotted it and recommend us the best solution for it, to provide the best outcome for the project. It is important to find someone who do care about the customer and the project. We will use him again for our future projects. Thanks. Tommy
Inside Out
Rating: 4.9 out of 5
Loft Conversion Company in Walham Green
Inside Out was formed in 2009. We are an established, London based building company operating throughout London and within the M25. We deliver an honest and straight forward service, with quality workmanship at the forefront of everything we do.
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Latest review:
Kitchen Fitting- 22 Jan 2023
Really honest professional work. Stuck to my timing against all odds as I successfully added on a few jobs aside the kitchen. Very friendly team, no stress. Extremely tidy and thorough. Would recommend Inside out under Nico again and again.
CM Building LTD
Rating: 5 out of 5
Loft Conversion Company in Walham Green
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.
Aquaspark ltd
Rating: 5 out of 5
Loft Conversion Company in Walham Green
We are plumbing, Heating and general building company based in south west London. We are fully GAS SAFE qualified and fully INSURED. Expert in all makes of Boiler repairs and installation. Carry most of the parts in van to fix then n there to avoid cost to client. we work on Very REASONABLE COST AND ALL our work is GUARANTEED. Under floor heating Central heating Bathrooms Gas safety inspections AS A VAILLANT APPROVED CONTRACTOR WE OFFER UP TO 10 YEAR GUARANTEE ON NEW BOILERS
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Latest review:
Gas Work- 6 Feb 2019
Gajraj from Aquaspark provided a very prompt and professional service. He was quite pleasent to speak to, and explained me the problem and solution in detail. He fixed my fireplace and cleaned up after completing. Really please about the overall experience.
apex roofing solitions
Rating: 5 out of 5
Loft Conversion Company in Walham Green
Dedicated roofer experince in installing , repairing and maintaing various types of roofing work including roof structures and wood work proven track record of completing projects on time within budget.
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Latest review:
Roofing (Pitched)- 14 Apr 2026
Great communication, fast and efficient were done in a day.
Carl Mcinerney
Rating: 5 out of 5
Loft Conversion Company in Walham Green
Hi, I’m Carl. I’m 46 years old and have been in the industry since I was 16. We’re based in West London but have completed projects all over the UK over the last few decades. Our main clients have been predominantly based in Cobham on exclusive high end residence’s over the last 5 years, so we have a wealth of experience in fine detail finishing, cabinetry, structural and fit out, along with all other aspects. We’re happy to advise on all projects and complete to the highest standard.
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Latest review:
Carpentry- 31 Mar 2025
Very pleased now the job is completed 🙂
Lucas Build London Ltd
Rating: 5 out of 5
Loft Conversion Company in Walham Green
Hi. My company exist from 10 years. We are doing house extensions, loft conversions and full refurbishments. I look after every my work, im always being in touch with Clients, and always happy to give advise. Im working together with my builders, that is why work going smooth and always before or on time. Please call for free quote. Thank you
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Latest review:
Lukasz and his team built a lower floor kitchen extension and downstairs WC for my wife and I. From start to finish, they were extremely professional and helpful. They were the perfect builders for first time renovators such as ourselves, guiding us through difficult decisions, while sticking religiously to their timescales. They began with helping us scope out the design, adding useful insight and advice. They then set to work, making our vision a reality. Their work ethic was superb, and we were ecstatic with the level of craftmanship exhibited. Like any building project, there were unforeseen costs and issues, but these were always handled very fairly and efficiently by Lukasz and his team. We are over the moon with the end product! I would (and have) recommend Lukasz to anyone looking to undertake building work.
john d limited
Rating: 5 out of 5
Loft Conversion Company in Walham Green
Thank you for taking time to look at our profile. We are a company with over 20 years experience in domestic and commercial installations. We are able to help from simple maintenance, fault finding and testing to complex new installations. Customer satisfaction is taken seriously as well as punctuality, neatens and honesty in doing business with our clients.
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Latest review:
Electrical- 14 Jun 2020
Greg, explored all possible solutions whilst keeping the changes to the ascetics as minimal as possible. He talked me through his plans and we booked him in. We are very happy with the work and would definitely call Greg again should I need more electrical work doing.
Maine Carpentry
Rating: 5 out of 5
Loft Conversion Company in Walham Green
Maine Carpentry is an established building and joinery company supporting commercial and domestic customers in London and South East of England. Based in Ealing, West London, with highly trained and professional carpenters with over 15 years experience. Our aim is to provide a high quality professional service to all our clients, meet clients expectations and complete work with outstanding customer satisfaction. Our reputation is in the hands of our customers, which has seen Maine Carpentry’s name being passed from one satisfied customer to another. Find us on Instagram @mainecarpentry
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Latest review:
Carpentry- 2 Sep 2025
Maine carpentry built an electrical cupboard for us in our industrial unit, and we couldn’t be happier with the results. He was extremely reliable, completed the work within the agreed budget, and delivered excellent craftsmanship. The overall quality of his work is outstanding, and we would be very happy to recommend him to others.
Maycor Building Services Ltd
Rating: 5 out of 5
Loft Conversion Company in Walham Green
At Maycor Building Contractors, we specialize in delivering top-quality construction and renovation services across the UK. With a strong commitment to excellence, we cater to both domestic and commercial clients, ensuring each project meets the highest standards. Our Services Domestic Renovations: From kitchen and bathroom remodels to full home refurbishments, we transform living spaces to match your vision. Commercial Projects: We handle office fit-outs, retail space renovations, and other commercial property improvements, ensuring minimal disruption to your business operations. New Builds & Extensions: Our team manages new construction projects and property extensions, delivering results on time and within budget. Why Choose Us Experienced Professionals: Our skilled team brings years of experience to every project, ensuring quality workmanship. Customer-Centric Approach: We prioritize clear communication and client satisfaction, tailoring our services to meet your specific needs. Reliable & Trustworthy: We pride ourselves on our reliability, completing projects efficiently and to the highest standards. Get in Touch Ready to start your next construction or renovation project? Contact us today for a free consultation and quote.
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Latest review:
Carpentry- 6 Aug 2019
Victor definitely is a quality builder who with his team works very hard to deliver a professional finish. In the end rather than just the doors, Maycor Building Services also redecorated the flat. They arrived on time and stayed late and I got reports back from the neighbours with comments about how hard they worked!
Daniels Contractors & Development ltd
Rating: 5 out of 5
Loft Conversion Company in Walham Green
Daniel's Contractors is a team of building professionals with over 20 years' experience in the construction and renovation of commercial and residential properties. We pride ourselves on ensuring customers are completely satisfied with not only the finished project but also the process. This means our customers are usually recommended to us by friends and existing clients. As a result, we have more and more customers returning to use our services.
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Latest review:
Roofing (Pitched)- 29 Jan 2019
Very pleased with the work that Daniel’s Contractors continue to do for our home. We have now hired them to fix the leak in the roof, fix doors throughout our home and we recently had an extension / kitchen done. We are so happy we went with them. We cannot recommend them enough and will continue to use them whenever we need building work. Russ is easy to work with and takes a huge amount of pride in his work. All the builders were respectful of our home, were extremely hard working and worked quickly. The extension and kitchen is of a high standard and even better than we imagined. We couldn’t be happier.

4.4

Top rated Loft Conversion Companies

Our Loft Conversion Companies in Walham Green, 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 Walham Green?

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

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 Walham Green loft conversion company.

Find a loft conversion company in Walham Green 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 Walham Green.

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 Walham Green can view your job and register their interest.

Step 2: Review and compare Walham Green 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 Walham Green 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 Walham Green 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 Walham Green

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 Walham Green?

A local loft conversion company in Walham Green 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 Walham Green 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 Walham Green 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 Walham Green

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 Walham Green before agreeing to start the work.

Do I need planning permission for a loft conversion in Walham Green?

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