Loft conversion companies in Canonbury

Name: Loft Conversion Company
Brand: MyBuilder
SKU: loft-conversion-company
Rating: 4.6 (10 reviews)

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Some of our top rated loft conversion companies in Canonbury

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LondoNest Ltd
Rating: 5 out of 5
Loft Conversion Company in Canonbury
Londonest is a London-based building company specialising in high-quality residential construction and renovation. We provide reliable and professional services including house extensions, loft conversions, full property refurbishments, kitchen and bathroom renovations, and general building works. Our team combines strong technical expertise with attention to detail to deliver projects that meet the highest standards of quality and safety. We work closely with our clients from the initial consultation through to completion to ensure every project is delivered on time, within budget, and to the client’s satisfaction. At Londonest, we pride ourselves on clear communication, transparency, and a commitment to excellent workmanship.
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Latest review:
We hired this builder for a 2-metre rear extension and a very large garage extension and we’re really happy with the result. The project needed a pile foundation which is a bit more complicated, but they handled everything very professionally. They listened to what we wanted and kept us informed at every stage, which really helped as we were living in the house while the work was being done. The team were friendly, easy to deal with and worked to a good standard. Overall a very good experience and we would happily recommend them.
AlfredM Building Contractors Ltd
Rating: 5 out of 5
Loft Conversion Company in Canonbury
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.
Miron
Rating: 5 out of 5
Loft Conversion Company in Canonbury
General billing Painting, loft conversion, extension, handyman
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Latest review:
Handyman- 15 Sep 2021
He was very well manned and professional and did a little work more work without charging extra. He is very tidy and the price was very reasonable. I will certainly hire him again in the future . Thx Miron xxx
THE WISEHOME GROUP LIMITED
Rating: 5 out of 5
Loft Conversion Company in Canonbury
We're big enough to manage large projects and small enough to show care. Our aim is satisfied clients - Pre and post images - Excellent customer ratings and hopefully your endorsement. We're a diligent crew, committed to providing quality within a budget.
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Latest review:
Restoration & Refurbishment- 2 Mar 2021
Found Celino and his team to be professional, prompt and responsive. The refurb project was completed to a high standard and whilst experienced some delays due to Covid lockdowns, Celino managed this very well and remained flexible.
Singh Lofts Ltd
Rating: 5 out of 5
Loft Conversion Company in Canonbury
Singh Lofts, building and maintenance have over 52 year’s managerial experience in the construction industry. We are known for our ability to deliver high-quality projects on time and budget. Regardless of a project’s size or complexity, we meet our client’s needs.
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Latest review:
Extensions- 8 Sep 2016
We hired Stone cbm to build our rear extension in Feb 2016 and the job finished on time in April. If there were a best builder award, the winner would be Jas. He is not your typical builder; his communication and execution skills are second to none. He listened to all our requirements like a friend and provide solutions like a pro. We are pleased with the finish. The project is just about on budget and on time, and could have been finished earlier if not for the other tradsman we called in to do other work causing delays. We had all sorts of problems with all the other tradesman and Jas was always there to give us a helping hand. In hindsight, we should have hired jas to do our other work as well as the extension to reduce all the stress. Project managing is much tougher then we thought especially when most of the tradesman out there simply do not care about their reputation at all (even the ones with many good reviews on mybuilder). Jas on the other hand is extremely organized and highly reliable. We would recommend Jas and his team wholeheartedly to anyone and looking forward to working with him again for our next project.
Loyalty Construction Ltd
Rating: 5 out of 5
Loft Conversion Company in Canonbury
New to this platform, but backed by over 20 years of construction experience. At Loyalty Construction, we combine extensive industry knowledge with quality workmanship, honest communication and reliable service. From refurbishments and renovations to general building works, every project is completed with care, professionalism and attention to detail. To introduce ourselves to the platform and give our first customers the opportunity to experience the quality of our work, we are offering 10% off to our first clients. We look forward to earning your trust, delivering excellent results and building a strong reputation through genuine customer reviews.
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Latest review:
Rodrigo and team at Loyalty renovated our house, fixing lots of minor issues across the house from wear and tear. They were very flexible and did a great job across the whole house inside and outside. We have had lots of compliments since they did the work of how well the house is presented.
MetroServe
Rating: 5 out of 5
Loft Conversion Company in Canonbury
An established building company we specialise in building extensions, renovations and redecorating. We typically perform Loft, Side or Rear Extensions, install kitchens and bathrooms, remodel as required and redecorate to a high standard. We are well known and highly regarded in North London and can provide numerous references. Run by an engineer we are considered highly professional. We encourage new customers to talk to our existing customers to hear first hand how we operate.
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Latest review:
Restoration & Refurbishment- 17 Nov 2016
David and his team were really helpful and thorough from start to finish. Would definitely recommend.
creative solutions 4 you limited
Rating: 5 out of 5
Loft Conversion Company in Canonbury
a small building and restoration company, a builder with over 20 years of experience, we take proud of our projects building a good relationship with our clients.
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Latest review:
Loft Conversion- 27 Apr 2022
Completely Surpassed Expectations! We had Williams and his team in to do some under eaves storage. We had what we had in mind, which they quoted for, and whilst doing the work, they identified better ways of doing things, implemented them and still stuck to the agreed price. As these guys do this more than me, they are able to use that expereince, educate the client and achieve phenomenal results. Great value for money, now i have a large, light and usable storage space where I had next to none, my only problem is finding the stuff to fill it with. They even installed lighting meaning it works that much better. Get them in for a quote, if for no other reason than just to understand your options. His team are hardworking, friendly and do the work with a great sense of humor, taking pride in what they do. Gracias Williams!
Vivic Construction Limited
Rating: 5 out of 5
Loft Conversion Company in Canonbury
Vivic Construction is a professional construction company specialising in high-quality residential building and renovation projects. We provide reliable, efficient and fully managed construction services, from initial planning through to completion. Our services include loft conversions, extensions, renovations, roofing, structural works, and general building works. We focus on delivering quality workmanship, attention to detail and practical solutions tailored to each client’s needs.
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Latest review:
Carpentry- 12 Oct 2026
Very professional project management. Planned and came on time did the work professionally left the house clean and tidy. In the planning phase they discussed this options. Would recommend them to anyone.
P.S. Building Projects Ltd
Rating: 5 out of 5
Loft Conversion Company in Canonbury
"WE ARE A HOME EXTENSION AND LOFT CONVERSION SPECIALIST. WE ALSO OFFER A COMPLETE BUILDING SERVICE! A family-run business, Quick growing building company with more than 20 yrs building experience. And we’ve been providing the highest quality work for our customers ever since. Everyone here at P.S.Building Projects Ltd is dedicated to meeting your specific requirements, delivering bespoke work on budget and on time. Which means you’ll enjoy peace of mind from start to finish."
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Latest review:
Conversions - General- 11 Oct 2022
We've been seriously impressed with Pawel and his team. They opened up our rear dining room/kitchen wall using an RSJ, following our engineer's drawings perfectly. They also did a few bits of plumbing and bricked up one of the windows at the rear, which is where the new kitchen will be fitted. They were incredibly tidy and really pleasant and courteous to be around, which my wife was so grateful for given we live in a busy family house (most builders are not like this...), I can't thank them enough! We will definitely be using them again in the not-so-distant future!
Pentire electrician
Rating: 5 out of 5
Loft Conversion Company in Canonbury
My aim to make sure electric is safe to use and comply with BS regulation and customers are satisfied with my work and happy
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Latest review:
Electrical- 2 Mar 2015
Did the job well, pleased with the outcome of the work carried out. Happy to recall for future work.
ALT’s Builders
Rating: 5 out of 5
Loft Conversion Company in Canonbury
We are a family run business with more than a decade of experience. At ALT’s Builders Ltd we pride ourselves on an efficient and friendly service, and achieve 100% costumer satisfaction ethic. So no matter how big or small your job is we can help. ALT’s Builders Limited is a leading and reputable Construction Company serving around London Ever since we opened for business, we’ve taken a comprehensive approach to construction industry, providing our clients with a wide range of services to cover their needs. our clients are our Number one priority and we go extra mile to make sure they’re completely satisfied. we stand by the excellence of our work and provide clients with personalized attention based on their specific needs. With this service, we’re fully prepared to tackle even the most complex projects and stand by the exceptional quality of our work.
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Latest review:
Loft Conversion- 6 Jul 2026
Brief was a loft conversion + our front driveway completed in East Dulwich, South East London in Q1 2026 and we’d happily recommend Altin from ALTs builders if your in need of a good quality builder: - Competitive price - Good comms throughout - Hard working and extra hours as required to keep project on time - Highly reviewed on checkatrade.com / mybuilder.com company profiles - Overall professional job which we are super happy with When finishing up with us he then started another project down the road off the back of our recommendation and I know they are also very happy with him as a builder!
rrahman
Rating: 4.7 out of 5
Loft Conversion Company in Canonbury
We are a trusted loft conversion specialist dedicated to transforming unused attic space into beautiful, functional living areas. With years of experience in design, construction, and project management, we deliver high-quality loft conversions tailored to each client’s needs. Our services include dormer, hip-to-gable, and mansard loft conversions, all completed to the highest standards using premium materials. From initial consultation to final handover, we manage every stage of the process, ensuring a smooth and stress-free experience. We pride ourselves on attention to detail, transparent pricing, and excellent customer service. Whether you need an extra bedroom, home office, or living space, we help you maximise your home’s potential and add lasting value.
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Latest review:
Loft Conversion- 20 Jan 2023
Really lucky to find Rahman as our choice of builder. Communication and quality of work was second to none all done for a fair price. Any issues or delays he was expecting he communicate to me as soon as he knew. His team were great, all professionals and cleaned up after each day of work was complete. Highly recommended and look forward to working with him again on my future projects.
SVR CONSTRUCTION
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Loft Conversion Company in Canonbury
I have 15 years of experience in North London working for an construction company and now I am starting on my own business for that i don’t have any reviews The company ii worked for they are doing houses for most footballers in Hadleywood
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Ed’s loft conversions Ltd
Rating: 5 out of 5
Loft Conversion Company in Canonbury
We specialise in loft conversions, Extension to a complete house refurbishment.
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Latest review:
I engaged Edi to work on a full renovation and refurbishment of a 4 bedroom detached house with front and back gardens on Blackheath’s Cator Estate. Edi did an extensive amount of work, including stripping out; plumbing; plastering; windows installation; carpentry; and decoration. In addition, after commencing the property work, once the scaffold had been erected, following sensible advice, Edi and his team replaced the roof and fully insulated the attic; fitted additional electric points; rebuilt the garden patio; and replaced the flooring throughout, in addition to other important jobs including re rendering and pointing of chimneys, building new wardrobes in the main bedrooms; and upgrading the radiators. A new kitchen, and two new bathrooms have been fitted. The kitchen redesign meant knocking through a wall with the lounge to create a larger space. Edi is a highly skilled craftsman, who thinks creatively as he works to make best use of the space, including shelf fittings, and additional lighting for example. He has built some beautiful wardrobes, and the internal decorations have brightened up what was previously a rather shabby looking house. In addition to the above, I wish to commend Edi for his professionalism, courtesy, and passion for doing the best work possible. On all the site visits I attended, and every time I spoke with him on the phone, it was striking how much he cared about the work that he was doing, his desire to ensure that the house would look the best. I always left site visits with the feeling that he cared so much about the house that he could be safely relied on to give the best advice to enable us to make the right decisions. I also noticed that Edi and his team would take the upmost care to keep the property safe, tidy and in good shape throughout the project. He can be fully trusted to look after any site he works on. He is intelligent and careful when it comes to safety and security. It has been a pleasure for Edi and his team to work with us over a period of around 6 months, and he did so much to reduce the stress of a significant project so that we could always rely on him to work methodically, patiently and sensibly, and to make best use of the resources available. His pleasantness shines through, and everyone I know who has spoken to him has always provided me with the most positive feedback I have no hesitation in recommending Edi to anyone who wishes to engage him for future projects, and is most deserving of the good words that I and others that work with him have to say about him.
OL and Edward Limited
Rating: 4 out of 5
Loft Conversion Company in Canonbury
Years in business: since 1996 At OL & Edward Limited, we take pride in delivering creative solutions which are as practical as they are eye-catching – no matter if it’s a home interior makeover or commercial development; from concept through completion each project gets special attention down to even the tiniest details for maximum impact results worth celebrating about! But don't just take our word for it – experience first hand why clients come back again (and again!) by taking advantage of any one of our services today: Full home renovation, bathroom and kitchen installation, flooring, tiling, consultation, design, exterior works and much more
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Latest review:
Restoration & Refurbishment- 17 Feb 2025
Great job on cleaning and refurbing our 2 bed flat. Very professional and responsive. Would hire them again in a heartbeat.

4.6

Top rated Loft Conversion Companies

Our Loft Conversion Companies in Canonbury, are rated 4.6 out of 5 based on 10 reviews from customers like you.

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What services are offered by loft conversion companies in Canonbury?

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

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 Canonbury loft conversion company.

Find a loft conversion company in Canonbury 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 Canonbury.

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 Canonbury can view your job and register their interest.

Step 2: Review and compare Canonbury 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 Canonbury 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 Canonbury 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 Canonbury

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 Canonbury?

A local loft conversion company in Canonbury 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 Canonbury 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 Canonbury 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 Canonbury

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 Canonbury before agreeing to start the work.

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

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