Loft Conversion Companies in Hampstead

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

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

Select a service

How it works

Post your job for free

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

Tradespeople respond

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

Review profiles and choose

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

Some of our top rated loft conversion companies in Hampstead

1870 Results

Sort by:

Rapid Response Contractors
Rating: 5 out of 5
Loft Conversion Company in Hampstead
We are a family run business. No job is too big or too small for us. I have been in the building trade from a early age, and qualified in gas and electrical engineering. My wife handles all admin and material orders for the company whilst im hands on with my team of workers.
Get in touch
Latest review:
Loft Conversion- 27 Aug 2017
Sheraz and his team completed a loft conversion in our house in Harrow, inclusive of new staircase, en-suite bathroom, doors fitting throughout, painting, tiling, plumbing and electrics. We are delighted with our beautiful light and airy new loft bedroom! The quality of the workmanship is excellent, the team were professional, easy to work with throughout the project and completed under 10 weeks. They kept us informed and consulted throughout the build, discussed concerns, provided recommendations and practical solutions to the problems encountered along the way. They really wanted to do the best job they could do for us, were patient explaining the details and readily available to advise and answer any questions. We got to see a project Sheraz was working on as part of our research, spoke to the previous client and felt confident going into the project. At the outset we were provided with the breakdown of the build stages, costs and timescales. They were considerate to our neighbours and accommodating of fellow tradesmen. They also did a number of small additional jobs, which was a huge bonus. Overall we found Sheraz and his team very friendly, reliable and trustworthy. We would use Sheraz and Rapid Response again, and can recommend them without hesitation. We are also happy to provide additional feedback and/or pictures upon request.
Kubo Construct LTD
Rating: 5 out of 5
Loft Conversion Company in Hampstead
Kubo Construct is a professional construction company specialising in home renovations, extensions, and conversions across Hertfordshire and London. We deliver a bespoke, end-to-end service, creating high-quality living spaces tailored to your lifestyle and requirements. Whether you’re planning a home extension or a property conversion, our experienced architectural designers, interior designers, and skilled builders work closely with you to maximise space, improve functionality, and add lasting value to your home. We put your vision first, offering a complete and stress-free approach to both home extensions and conversions. Our process begins with a free consultation to discuss your requirements, ideas, space, and budget. From there, we manage the entire design process and every stage of the build, ensuring full compliance with building regulations, structural requirements, and the highest standards of craftsmanship. If you already have design plans in place, we can seamlessly bring them to life with our in-house team of skilled builders.
Get in touch
Latest review:
Kubo Construct did an amazing job on my beauty studio. They took all my ideas on board and turned the space into something modern, clean and genuinely beautiful. The room had quite a few issues to start with—mold under the flooring, bold moss green and red walls, and exposed gas pipes—but they knew exactly how to handle it. They gave honest, realistic advice and found solutions that worked, and now you’d never even know any of that was there. The whole process felt easy and straightforward, and the end result is exactly what I wanted. Highly recommend!
RJ Farinha Architectural Services Ltd
Rating: 4.6 out of 5
Loft Conversion Company in Hampstead
RJF Architecture is a Company specializing in residential architecture. We prime ourselves for behind a business with a face, we like to meet our clients and get involved rather than producing some drawings and forget about you. Both the Design and Site experiences accumulated in the last 10 years working in projects ranging between the 30k and the 180M assure the confidence to achieve the success of your project.
Get in touch
Latest review:
Architecture- 19 Aug 2022
I do need to talk to the architect more,
SM Builder Expert ltd
Rating: 5 out of 5
Loft Conversion Company in Hampstead
At SM Builder Expert Ltd the core value is customer satisfaction. SM Builder Expert ltd provides solutions for your construction needs; including building extensions, loft conversions, New build, rebuilding and refurbishing, internal alterations, painting and decorating, as well as garden and patio works. We have a very good track of previous completed jobs, with necessary recommendations and contacts at request.
Get in touch
Latest review:
Bathroom Fitting- 29 Sep 2020
Sergiu and his colleagues did a great job refurbishing our bathroom. Always punctual, clear with costs and extras and delivering great work overall. We can definitely recommend them!
alintrade.ltd
Rating: 4.7 out of 5
Loft Conversion Company in Hampstead
Hello..my name is Alin . Best description of myself is honesty,determination,quality ,diligently but i let you covince yourself of this. Don’t hesitate to contact
Get in touch
Latest review:
Landscaping- 30 Jul 2025
Alin was professional and did a good job. He had a couple workers who were messy and we spent a lot of time cleaning up after them. But they worked hard and did a good job on our garden.
crownbuilders
Rating: 5 out of 5
Loft Conversion Company in Hampstead
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
Get in touch
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.
Statecraft Building Ltd.
Rating: 5 out of 5
Loft Conversion Company in Hampstead
We strive to provide the best building services posible within and outside London. Our company has been built on continuous recommendation, repeat custom and quality workmanship. We offer full building services and you can be sure we`ll take care of the job.
Get in touch
Latest review:
Milen, initially came as I had a leak in my ensuit where the tiles had lost their grout. He was very honest in giving me advice, and regrouted at a very reasonable price. He then came a month later to remove the tiles in the shower and replace the plaster protection board, then retiled. He purchased all the products and gave me advice on the most valuable sustainable tiles. The work was carried out a to very high level, I would most definitely hire Milen in the future, and highly recommend him.
Construction
Rating: 5 out of 5
Loft Conversion Company in Hampstead
Carpenter Joiner:level 2 Diploma (blue CSCS) 10 years experience in UK 10 years experience back home (Romania) Level 2 Diploma in Electrical &Electronic Engineering Technology (QCF) CERTIFICATE of Attendance Waterproofing in Buildings (Delta Membrane Systems) Certificate of Attendance GRP Roofing (fibreglass flat roof installation) Construction Industry Scheme (sole trader registered)
Get in touch
Latest review:
Carpentry- 17 Sep 2021
Viorel quoted promptly, arrived on time and did a a great job of the required carpentry jobs at my house - a cat flap and alterations to cupboards. I'm already talking with him about doing other jobs in the future so would definitely recommend Viorel!
All Done Services Ltd
Rating: 5 out of 5
Loft Conversion Company in Hampstead
At All Done Group, we bring over 40 years of master construction expertise, including 27 dedicated years serving London's most prestige postcodes, to high-end residential renovations, restorations, and complete refurbishments and general building works We specialize in the delicate balance required for listed properties and luxury homes, seamlessly executing complex structural alterations while delivering flawless architectural finishes. From initial groundwork and basement excavations all the way to intricate slate roofing and high-spec interiors, we manage every stage of the build with relentless precision and traditional craftsmanship. Working in close partnership with top London architects, structural engineers, and interior designers, we turn ambitious architectural concepts into exceptionally crafted living spaces. Whether restoring period details on a Grade II listed property, undertaking a full structural refurbishment, or executing a modern extension in central London, All Done Group provides the technical skill, project governance, and uncompromising standards your project demands. When experience, accuracy, and structural integrity matter most, trust a building partner backed by four decades of field mastery.
Get in touch
Latest review:
Top work at reasonable cost. Highly recommended.
A&D Maintenance
Rating: 5 out of 5
Loft Conversion Company in Hampstead
- Hanging and odd jobs - Repair - Furniture assembly - Electrical service - Painting and decorating - Pluming service - Carpentry and furnitures - Property refurbishment
Get in touch
Latest review:
Fencing- 7 May 2021
Happy with the work completed and good price. Very hard working
SMR DESIGN AND CONSTRUCTION
Rating: 5 out of 5
Loft Conversion Company in Hampstead
Hello there I am running a business house renovation. I have a professional team to do work with safely and professionally. Our first priority to keep customers happy with our work. We have 12year experience, Our service is Bathroom renovation, Plumbing work, Painting and Decorating, Floor fittings,
Get in touch
Latest review:
Kitchen Fitting- 15 Oct 2020
Satinder came at short notice and his work was neat. It was a small job, just laying 2 floor tiles and connecting a new cooker.
HJ Architect Ltd
Rating: 5 out of 5
Loft Conversion Company in Hampstead
HJ Architects is an architectural design studio based in Hampton, London. Established in 2016, we are an emerging practice, working on small carefully crafted projects that have a richness of detail. We have built up a portfolio of well designed residential and commercial projects, including Lawnsmead Cottage and Diamond Cottage, both within the green belt and bordering a conservation area. We emphasise the use of natural light and natural materials in our work, creating buildings and spaces that are elegant, timeless and contribute to their surroundings. The practice works with challenging briefs and solves complex problems with rational and clear design. Our conceptual ideas are developed and presented through sketches, models, drawings and dialogue. We believe good design makes the world a better place and can enrich peoples lives. We work closely with our clients from the outset to develop their brief into an imaginative, pragmatic and cost effective solution that is appropriate to its physical locale and context.
Get in touch
Latest review:
Architecture- 27 Jul 2026
Henry does great drawings with a lot of thought and listening to what customer wants. We are super happy with the drawings and having our dream house step closer. Highly recommended!
ALLARAJ BROTHERS LTD
Rating: 5 out of 5
Loft Conversion Company in Hampstead
Welcome to ALLARAJ BROTHERS LTD At ALLARAJ BROTHERS LTD, we pride ourselves on delivering excellence in every project we undertake. With decades of experience in the construction industry, we have established a reputation for quality, reliability, and customer satisfaction. Our team of skilled professionals is dedicated to bringing your vision to life, whether it's a residential, commercial, or industrial project. We use the latest technologies and sustainable practices to ensure that every build is not only beautiful but also durable and environmentally friendly. We understand that each project is unique, and we tailor our services to meet your specific needs and preferences. From initial consultation to project completion, we work closely with you to ensure that every detail is executed to perfection. Choosing ALLARAJ BROTHERS LTD means choosing a partner who values integrity, transparency, and excellence. Let us help you create spaces that inspire and endure. Contact us today to discuss your next project and experience the difference that true craftsmanship and expertise can make.
Get in touch
Latest review:
Restoration & Refurbishment- 5 Jan 2025
Very happy with the professionalism, and friendly polite communication. Adem is a perfectionist and can see things I noticed no one else could. The quality of workmanship was excellent. Will definitely be using them again.
Leonard goli
Rating: 4.7 out of 5
Loft Conversion Company in Hampstead
Highty skilled construction with 10 years experience. Expertise in planning construction projects,defining scopes of work and labord costs. With plenty of experience in all aspencts of loft convention extensions barhrooms,kitchens,tiles,floor etc
Get in touch
Latest review:
Decking- 1 Jun 2026
Extremely helpful and professional. Thank you
Florin
Rating: 5 out of 5
Loft Conversion Company in Hampstead
I’ve got over 10 years experience in roofing industry,I’m a professional person,I’m not doing tipe of work that I never done it before,I don’t leave any jobs unfinished.I have done several roofing jobs for different companies base in London.
Get in touch
Latest review:
Roofing (Pitched)- 29 Nov 2022
Florin and his team did a very good job fitting a skylight and rubber roof. Communication was very good and the standard of workmanship and overall finish were excellent. I would strongly recommend him
Convert Extend UK Limited
Rating: 5 out of 5
Loft Conversion Company in Hampstead
We at Convert-Extend offer a full package from plans, planning permission, building control and a fully managed build to ensure customer satisfaction We have over the past 30 years worked for local surveyors, estate agents and happy home owners that would happily provide references As you can see from our portfolio we are capable builders groundworks and home quality builders with many years experience
Get in touch
Latest review:
At last I have found a company I can trust Steve and he’s team we’re very easy to deal with throughout the whole process the planning and finish was exemplary guided me through the whole process my son has a amazing space to live in very happy would highly recommend Keith Warner

4.3

Top rated Loft Conversion Companies

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

Quality screening

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

What services are offered by loft conversion companies in Hampstead?

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

Find a loft conversion company in 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 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 Hampstead can view your job and register their interest.

Step 2: Review and compare 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 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 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 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 Hampstead?

A local loft conversion company in 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 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 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 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 Hampstead before agreeing to start the work.

Do I need planning permission for a loft conversion in 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 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 Hampstead loft conversion companies offer strategies to minimise disruption, but in complex projects, temporary relocation may be advisable.