Loft Conversion Companies in West Hampstead

Name: Loft Conversion Company
Brand: MyBuilder
SKU: loft-conversion-company
Rating: 4.5 (8 reviews)

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Some of our top rated loft conversion companies in West Hampstead

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First Int. Project Limited
Rating: 4.4 out of 5
Loft Conversion Company in West Hampstead
Back on MyBuilder after 7 years !!! Design and build Architectural team Structural engineers team Build and construction Our business is based on TRUST | QUALITY | CARE Our company cover the following trades: -steel erecting - steel structures -roofing - loft conversions -plasterers - internal skimming -painters and decorators -kitchen installers -bathroom fitters -bricklayers - for extensions -landscapers -electricians -gas engineers -carpenters - floor, doors, structural -windows installers -bespoke furniture
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Latest review:
Bathroom Fitting- 15 May 2017
We hired Inside/Outside to re-do our bathroom. New sink, bath, toilet, tiles, lower ceiling, re-hang the door and move the radiator. They were polite, honest, professional and very hard working. When they came round to quote they were noticeably more thorough and showed more attention to detail than others. Their quotes were very competitive, their work was good and they removed all the rubbish as well. They also came back afterwards to check everything was working and to deal with a couple of 'snags'. We will be using them again.
KML BUILDING (UK) ltd
Rating: 4.5 out of 5
Loft Conversion Company in West Hampstead
KML is a Central London-based building company with a strong reputation for quality, reliability, and attention to detail. We specialise in home extensions, refurbishments, HMO conversions, and general building works — providing tailored solutions for both residential and commercial clients. As a small, hands-on team, we offer a personal service from start to finish, ensuring every project meets the highest standards of craftsmanship and compliance.
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Latest review:
Bathroom Fitting- 13 Oct 2025
Camilo was supposed to meet me today to give me a quote. He missed our appointment without any notification. I am not here to chase people to do their job. The job will be advertised again, as he was not hired.
Restoration and Refurbishment Specialists Limited
Rating: 5 out of 5
Loft Conversion Company in West Hampstead
Cubitt Wren is a London refurbishment and restoration firm. Full refurbishments, renovations, extensions, kitchen and bathroom installations, loft conversions, and restoration of period and listed homes. Every job is run directly by a Project Director of the firm. Work is delivered by our in-house trades — carpentry and joinery, plaster, stone, tiling, decoration. One team, one point of contact. Written scope and fixed pricing before we start. Clear programme. Transparent variations — any change priced and approved in writing. A real defects period after handover.
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Latest review:
We recently had our bathroom refurbished by Cubitt Wren in London, and we couldn't be happier with the result. From start to finish, they were reliable, professional, and always turned up when they said they would. The work was completed quickly without compromising on quality, and the whole team was polite and respectful throughout. Communication was excellent the entire way through. They kept us updated at every stage, answered any questions we had, and made the whole process stress-free. The finished bathroom looks fantastic, and it's clear they take real pride in their work. I would definitely use Cubitt Wren again in the future and wouldn't hesitate to recommend them to anyone looking for a reliable and skilled company.
TWO BROTHERS INNOVATION LTD
Rating: 5 out of 5
Loft Conversion Company in West Hampstead
Hey, I’m Wesley Director of this company, our team is composed by 12 people (carpenter, bricklayer, painter) we love to build your dream, always working hard to develop the best results for your project. Two Brothers Innovation Ltd started trading in 2018. The company covers Wembley to Westminster and is able to support homeowners with jobs in the following categories: Bathrooms, joinery, loft conversion, extension and renovation.
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Latest review:
Wesley’s team did a great job sanding down and filling my stairs and painting them. They did the same for my front door. Very professional team, super helpful and friendly.
Loft conversion
Rating: 5 out of 5
Loft Conversion Company in West Hampstead
I specialise in Lof Conversion and extensions. I've been covering lofts for over 15 years. If you are looking to create extra space for you and your family then we can have this done for you, affordable and also providing a professional job.
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Latest review:
Loft Conversion- 7 Dec 2022
Job well done and fast too. Also very much appreciated that Soren left the place clean after finishing the job.
Su Su Construction Limited
Rating: 5 out of 5
Loft Conversion Company in West Hampstead
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.
LEBELLE HERITAGE & RESTORATION LTD
Rating: 5 out of 5
Loft Conversion Company in West Hampstead
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.
London & Kent Best Kitchen & Bathroom Solutions Ltd.
Rating: 5 out of 5
Loft Conversion Company in West Hampstead
Our highly skilled team of builders, carpenters, electricians, decorators and plumbers are reliable, trustworthy and dedicated to achieving the highest quality finish for your project; however large or small. Each project is tailored to your requirements and managed via a single point of contact.
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Latest review:
Bathroom Fitting- 26 Nov 2020
Sylwester and team did a fantastic job and were incredibly accommodating and polite with all of our requests. Would definitely recommend.
H&J Properties 02 Ltd
Rating: 5 out of 5
Loft Conversion Company in West Hampstead
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.
LDN Construction
Rating: 4.6 out of 5
Loft Conversion Company in West Hampstead
With over 20 years of experience, we specialise in loft conversions, roofing, extensions and more. We primarily operate in Greater London, Our team possesses diverse skills and knowledge, ensuring top-quality results. We take pride in delivering exceptional customer service, professional workmanship, and thorough aftercare. Choose us for your next project and experience the best in the business.
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Latest review:
Bathroom Fitting- 28 Nov 2024
in my place, everything looks fine. but they used long screws penetrated the downstairs pipeline, which made my life very hard, intense relationship with neighbors, neighbors tries to break in. and this problem is still going on. i don't know how to fix it.
W4 Builders
Rating: 5 out of 5
Loft Conversion Company in West Hampstead
We do all kind of building services in west London. We do painting, decorating as well as plumbing and electrics. We do bathrooms and house extensions and full property refurbishments.
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Latest review:
Robert Biegala has done laminate flooring, decorating and other tasks in my office in Farringdon. It was pleasure to work with Robert as he is a reliable, responsible and trustworthy person. His communication was consistent and reassuring. Robert is proactive and finds solution to any problems which arise during works. I would highly recommend his services.
AlfredM Building Contractors Ltd
Rating: 5 out of 5
Loft Conversion Company in West Hampstead
AlfredM Building Contractors LTD Construction company specialising in • Loft Conversions • Extensions • Full House Refurbishments • Domestic & Commercial Building Services • New Build Eager to bring your dream project to life. Dedicated, efficient and passionate.
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Latest review:
Carpentry- 18 Jan 2025
Alfred and his team have done a great job. Replaced the floorboards, joists, installed insulation and damp proofing and sent the extra mile. Highly recommended and I am already using them for a host of other work.
Muro Construct ltd
Rating: 5 out of 5
Loft Conversion Company in West Hampstead
Muro Construct Ltd is a family-owned construction company dedicated to providing personalized, high-quality building services to homeowners and businesses. With a focus on attention to detail, reliability, and clear communication, we bring your vision to life with every project we take on. Whether it’s a home renovation, a commercial build, or general repairs, we take pride in delivering exceptional craftsmanship and ensuring that every job is completed on time and within budget. At Muro Construct Ltd, we treat every project as our own, offering a hands-on approach and building lasting relationships with our clients.
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Latest review:
Kitchen Fitting- 14 Jul 2026
Excellent from start to finish. Good communication, good price, quiet and hard working. Have no hesitation of recommending Murat for future jobs. We are planning to use him again.
Prodec Construction ltd
Rating: 5 out of 5
Loft Conversion Company in West Hampstead
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.
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Latest review:
Painting & Decorating- 18 Jun 2025
Martin has done an excellent job for us. He is professional, polite and helpful.
ST Maintenance London Limited
Rating: 5 out of 5
Loft Conversion Company in West Hampstead
Welcome to ST Maintenance London, Are you looking for top-quality painting, decorating, and general maintenance services? You've come to the right place. With 15+ years of experience, we pride ourself on delivering exceptional craftsmanship, attention to detail, and reliable service that transforms your space into something extraordinary. Whether it's a fresh coat of paint, a complete redesign, or essential upkeep, were committed to ensuring your satisfaction. Let’s make your vision a reality—efficiently, affordably, and beautifully. Contact me today to discuss your next project.
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Latest review:
I had the pleasure of Charlie and Kurt coming to do some work for me at one of my properties as the place hadn’t been touched in years and needed some serious TLC! They had replaced the ceiling in the bathroom, redone the decking and refitted some appliances as well as repairing the pointing outside and redecorating the entire house. This was a big job as the house is old and had defects all over in awkward places but they made sure to complete all touch ups to ensure the finish was to a good standard. They even tidied up the garden and had replaced some benches I had outside for free which was very much appreciated. Definitely recommend them for any jobs locally big or small! Thanks again guys :)
Total Interior Solutions
Rating: 5 out of 5
Loft Conversion Company in West Hampstead
Are you seeking a team who put your needs first? Then Total Interior Solutions is the team for you. We listen from the outset to what you would like your end result to be and this continues throughout the job which is completed to your complete satisfaction. Our team is ready to help you.
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Latest review:
Bathroom Fitting- 9 Jan 2015
Aggi and Pedro were excellent. They helped me to decide what fixtures and fittings I needed (including also doing some research themselves) and when it came to fitting the new bathroom they did it to a high standard and were tidy/cleaned up after themselves. I would recommend them.

4.5

Top rated Loft Conversion Companies

Our Loft Conversion Companies in West Hampstead, are rated 4.5 out of 5 based on 8 reviews from customers like you.

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What services are offered by loft conversion companies in West Hampstead?

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

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 West Hampstead loft conversion company.

Find a loft conversion company in West Hampstead 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 West Hampstead.

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 West Hampstead can view your job and register their interest.

Step 2: Review and compare West Hampstead 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 West Hampstead 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 West Hampstead 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 West Hampstead

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 West Hampstead?

A local loft conversion company in West Hampstead 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 West Hampstead 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 West Hampstead 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 West Hampstead

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 West Hampstead before agreeing to start the work.

Do I need planning permission for a loft conversion in West Hampstead?

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