Loft conversion companies in New Malden

Name: Loft Conversion Company
Brand: MyBuilder
SKU: loft-conversion-company
Rating: 4.3 (6 reviews)

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Some of our top rated loft conversion companies in New Malden

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Surrey loft chessington
No reviews yet
Loft Conversion Company in New Malden
My name is Mariusz and I have 20 years of experience in building loft conversion. During this time I did manage to buil 170 of them by my on hands.
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BM Construction
No reviews yet
Loft Conversion Company in New Malden
We are loft conversion and extension specialist. We offer a comprehensive service and can take care of all aspects of your loft or extension project.
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POLISH DECORATING SERVICES LTD
Rating: 4.9 out of 5
Loft Conversion Company in New Malden
We are not the cheapest but we are Master Builders experienced in all aspects of building works including bespoke services. Dedicated team of craftsmen always deliver jobs to the highest standards. We provide full certification for any gas or electrical works. City&Guilds- N.V.Q., P.A.S.M.A. and I.P.A.F. Over 15 years of experience in the UK.
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Latest review:
Extensions- 11 May 2018
After a rogue builder left me with 18 (eighteen) structural issues. Lez and his crew came in transformed my failed extension into a masterpiece. All aspects of the job was done to the highest quality and utmost care and attention to detail was shown to building control needs. They cleaned up after every day and made sure the house was habitable, as I had to live there. Every aspect of the build, from the carpentry, plastering and tiling was first class and their recommend electrician and plumbers were from the same stock. Total professionals. My only regret is that I did not use this builder the first time. The prices were reasonable and even building control had good word to say about their work. Thanks Lez
Su Su Construction Limited
Rating: 5 out of 5
Loft Conversion Company in New Malden
Welcome to Susu Construction: Your Premier London Construction Partner Are you searching for a London construction company that stands out for its excellence, commitment, and innovation? Look no further than Susu Construction, your go-to choice for top-notch construction solutions in the bustling capital of London.
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Latest review:
Groundwork & Foundations- 2 Dec 2022
We are very happy and glad to have found Su Su Construction. It is great to work with such an open minded contractor who is very experienced and diligent. To us architects it is really important to be able to explore alternative means of construction in order to create long lasting, beautiful and healthy environments and with SuSu we are on the right track. Highly recommend.
Grzegorz Tabisz
No reviews yet
Loft Conversion Company in New Malden
General Builders 15 years experience Insured References
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LEBELLE HERITAGE & RESTORATION LTD
Rating: 5 out of 5
Loft Conversion Company in New Malden
Lebelle Heritage & Restoration Lebelle Heritage & Restoration is a professional building and construction company specialising in renovations, refurbishments, and heritage restoration. We take on all types of projects, from full property renovations and structural upgrades to detailed interior finishes and the careful restoration of period features. Our team is skilled in both traditional craftsmanship and modern construction methods, allowing us to deliver work that is reliable, high-quality, and built to last. Whether we’re restoring the character of an older property or breathing new life into a modern home, we focus on precision, honesty, and clear communication throughout every stage of the job. We pride ourselves on delivering clean, efficient, and well-executed work that meets the needs of our clients and respects the integrity of each building. At Lebelle Heritage & Restoration, we build, renovate, refurbish, and restore with a commitment to quality and long-term durability.
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Latest review:
After a previous contractor took our money and left our loft extension unfinished, we were devastated and worried about how we would ever get our home back to normal. Then Lewis from Lebelle stepped in and completely turned things around. Lewis was patient, understanding, and incredibly professional. He worked quickly, kept costs under control, and finished the loft extension to a standard we’re so happy with. The stress he took off our shoulders was unbelievable. We honestly can’t thank Lewis enough. If you’re looking for someone trustworthy, skilled, and genuinely caring, Lebelle is the company to call.
DA BUILD LTD
No reviews yet
Loft Conversion Company in New Malden
"DA Build. LTD is a construction company owned by Albert Dauti, a professional carpenter with 13 years of experience. We are committed to excellence in all that we do. We believe that on-time delivery of the highest quality projects for the best value is only part of the equation. The experience of the construction process is just as important as the results. We create positive, memorable experiences and lasting relationships because our actions are guided by our core values.We are known for our collaborative approach and problem-solving skills and working with our clients to develop a optimum build solutions to ensure best value. Our projects includes new build, loft extensions, refurbishment and summer houses."
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Resst Construction
No reviews yet
Loft Conversion Company in New Malden
Resst Construction Ltd has been delivering high-quality construction and refurbishment services since March 2011. With over 100 successfully completed projects, we have built a strong reputation for excellence, reliability, and attention to detail throughout South West and West London. We specialise in high-end refurbishments, transforming properties with exceptional craftsmanship and a professional approach tailored to each client’s vision. From residential renovations to complete property restorations, our experienced team is committed to delivering outstanding results on every project. Resst also focuses on Kitchen extensions, Loft conversions as well As Full house refurbs At Resst Construction, we pride ourselves on exceeding customer expectations through quality workmanship, clear communication, and dedication to client satisfaction.
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DP BUILD SERVICES LIMITED
No reviews yet
Loft Conversion Company in New Malden
Welcome to DP BUILDERS At DP BUILDERS, we pride ourselves on being a leading construction company dedicated to excellence, innovation, and quality craftsmanship. With 15 years of experience in the industry, we have successfully completed numerous projects ranging from residential buildings to commercial complexes and infrastructure developments. Our mission is to deliver exceptional construction services that not only meet but exceed our clients' expectations. THANK YOU
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H&J Properties 02 Ltd
Rating: 5 out of 5
Loft Conversion Company in New Malden
H&J Properties is your friendly, reliable small team with over 10 years of experience in the building industry. We design, plan, build, and project manage, so you can rely on us for a full round of service. From floor and wall tiling to full kitchen and bathroom installations, we’ve got your home covered. We handle plastering, painting, drylining, insulation, and more with precision and pride. Need a loft, rear or basement extension, a new roof, or concrete work? No problem. Whether it’s bricklaying, basement waterproofing, or installing windows and doors, we bring craftsmanship and care to every job. Big or small, we build it right. Please message us directly for more project images.
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Latest review:
We have contracted H&J Properties for our house refurbishment in London. I was impressed with the team's professionalism and project management from start to finish. We had no plans or planning approved, so we wanted a design and build company who will be able to look after the project from start to finish. They did just that. Working with the architects and the planning application before starting the project planning. As always, there are, of course, unforeseen issues arising with the old houses in london but I could't be happier with the communication received from the team. Thanks for the great job.
London Bespoke Homes Ltd
No reviews yet
Loft Conversion Company in New Malden
General construction company offering maintenance, repairs, extensions , lofts and refurbishment to both commercial and domestic clients.
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Jake Gillam Carpentry
No reviews yet
Loft Conversion Company in New Malden
I'm a carpenter based in South West London with 10 years experience in the trade. I am flexible in the jobs I undertake and my work is to a high standard. I offer a friendly and reliable service.
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Alex
Rating: 4.8 out of 5
Loft Conversion Company in New Malden
Hi I offer good quality work which includes general construction works, painting interior, exterior, walls and ceiling repair and wood work I also offer handy man jobs, decking installation and repair,groundwork jobs.
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Latest review:
Painting & Decorating- 2 Oct 2026
Alex and Lubek were efficient and completed the task to a great standard. Communication throughout the job was easy and timely and we would definitely use them again!
Alliu22
No reviews yet
Loft Conversion Company in New Malden
My name its Xhonild. And i will introduce myself as the kindest and lovely person you will meet I decided to start as self employed after 5 years working on the trade and after working and getting lot of experience i thought starting up as self employed.
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Qube Projects Ltd`
Rating: 3.7 out of 5
Loft Conversion Company in New Malden
Here at Qube Building we aim to maintain a high level of customer service from initial meeting right through until completion. All work is carried out to the very highest standards using all qualified and certified trades. My brother and I have been in the building industry for a combined 25 years, I specialise in brickwork and groundworks - while my brother is a carpenter who can put his hand to most. We undertake most works from hanging a door to building an extension! References on request.
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Latest review:
Extensions- 22 Aug 2022
Happy with the overall work that was completed by Qube and the guys are friendly but did feel the communication lacked towards the end of the project
HBW
No reviews yet
Loft Conversion Company in New Malden
30 years experience in refurbishments conversions and extensions however smaller jobs (eg door hanging, stair fitting ) also undertaken.
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4.3

Top rated Loft Conversion Companies

Our Loft Conversion Companies in New Malden, are rated 4.3 out of 5 based on 6 reviews from customers like you.

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What services are offered by loft conversion companies in New Malden?

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

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 New Malden loft conversion company.

Find a loft conversion company in New Malden 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 New Malden.

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 New Malden can view your job and register their interest.

Step 2: Review and compare New Malden 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 New Malden 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 New Malden 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 New Malden

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 New Malden?

A local loft conversion company in New Malden 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 New Malden 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 New Malden 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 New Malden

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 New Malden before agreeing to start the work.

Do I need planning permission for a loft conversion in New Malden?

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