What should I expect from a loft conversion company?

A specialist loft conversion company will handle the process from design through to completion. This includes providing detailed plans, dealing with planning permission or permitted development checks, ensuring structural safety (including joist strengthening and fire safety compliance), and managing all trades involved. You should expect transparent pricing, a clear schedule, and full adherence to Building Regulations.

Do loft conversion companies need insurance?

Yes. They should hold public liability insurance to cover property damage or injury, and employer’s liability insurance if they have a team. Companies offering design or structural services should also have professional indemnity insurance.

What questions should I ask before hiring a loft conversion company?

Ask whether they’ve completed similar conversions in properties like yours especially if it’s an older or listed building. Check who will manage planning applications and building control, what their typical timelines are, and whether they offer a fixed or itemised quote. It’s also useful to confirm how they handle unforeseen costs, subcontractors, and any aftercare once the project is complete.

Do I need planning permission for a loft conversion?

Not always. Many loft conversions fall under permitted development rights, especially dormer and rooflight-style conversions, provided they meet specific volume and set-back rules. However, if your home is in a conservation area, or you’re altering the roofline significantly, planning permission is usually required. A good company will guide you through the permissions process from start to finish.

How long does a loft conversion usually take?

The timeline of your loft conversion will vary lots depending on the size and type of conversion. A straightforward Velux or rooflight loft conversion can take around 4 - 6 weeks, while a dormer or mansard conversion may take 8 - 10 weeks or more. A loft conversion company should provide a clear schedule tailored to your design and property.

Find Local Loft Conversion Companies Near Me

Some of our top rated loft conversion companies

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MCO Building Contractors
Rating: 5 out of 5
We undertake all aspects of carpentry and roofing, we also specialise in fence panels, wooden decking and composite decking.
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Latest review:
Carpentry- 23 Apr 2021
Fantastic company. Came and hung 6 internal doors. They were incredibly polite/friendly. Did a fantastic job!! Extremely tidy - when I came home you wouldn't have even known anyone had been in the house. Can't recommend them enough!!
Paul Loughlin Joinery
Rating: 5 out of 5
I have over 25 years experience as a joiner from traditional roofing to kitchens,wardrobes and hand made furniture. My dad has 40 years experience as a bricklayer. We don't offer to build new extensions,but we are happy to refurbish and renovate any property and remove or build load bearing walls. We provide a top quality service for a fair price, this ensures we get repeat business from customers. We also have registered gas fitters,electricians and plasrerers that work alongside with us.
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Latest review:
Windows & Doors (Wooden)- 4 May 2020
Great job done by a friendly and professional tradesman. Thank you.
Developments4Investors ltd
Rating: 5 out of 5
We develop, convert renovate properties for investors, landlords and home owners if you currently have properties that need modernising or just need updating to current regulations to be sold or let to achieve maximum value or converting into your dream home, We can help All of our work is guaranteed from design to completion by qualified, time served tradesman ranging from Joiners, Plumbers, Electricians Bricklayers, Plasters and Decorstors.
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Latest review:
Conversions - General- 29 Jul 2022
Thank you for your speedy response to our request and also we were impressed how quickly you came to assess the work and started the job. We are pleased with the work and thank you for including our later amendments and additional pieces of work needed. You have worked to our budget, advised us of efficient and effective products and helped us to fine tune our design. You have communicated well throughout and helped us to keep our project open during renovations by working flexible hours and keeping the space tidy. We look forward to working with your team on phase two of our project.
WL Carpentry
Rating: 5 out of 5
Hello, I am a well experienced Carpenter with over 10 years experience. I have a strong and reliable network of other trades if your project has the need for them including architects. I like to keep all projects tidy, professional and on time. I pride the WL Carpentry name and look to deliver a high standard from the start to the finish. All quotations are free and at a time to suit you. My clients needs always come first.
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Latest review:
Carpentry- 16 Nov 2019
I cautiously hired Wade last minute to do the roof carpentry on my garage as another guy let me down. Wow! What a worker! Great quality job. This guy doesn't hang about either! One very happy customer 😊
Another Storey Loft Conversions Ltd
Rating: 4.7 out of 5
We're a dedicated family run business with over 20 years experience in the industry. We undertake any joinery projects large or small and pride ourselves in 100% customer satisfaction, whilst keeping our costs at low affordable prices.
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Latest review:
Loft Conversion- 1 Oct 2018
What an amazing Job Shaun and his team have done. It Was hard trying to pick someone to do the job, but Shaun seemed very clued up and answered all of our questions promptly prior to hiring him for the job, and I'm so glad we did. We couldn't be happier with our double dorma which has all been signed off by Building regs today. Shaun was good at listening to what we wanted, and making suggestions to help us decide on a few things. He kept the mess to a minimum and was always on the other end of the phone if we needed him. I wouldn't hesitate in hiring Shaun again or recommending him to anyone in the future.
SDC JOINERY LTD
Rating: 4.6 out of 5
Joiner with 20+ years of experience we take on all aspects of building and joinery work we have plumbers and electricians so we can do all jobs in house and project manage larger projects
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Latest review:
Hard Flooring- 16 Dec 2025
Completely unprofessional person unreliable came in first day then disappeared for 3 days kept on jumping between jobs. The work he did for us on laminate flooring was awful. He had no idea on how to do the stairs properly. He made a mess in the bathroom when taking the skirting boards off and broke all of the tiles at the bottom then he tried to hide it with the skirting boards. He left gaps between the walls and the skirting boards. He was turning up for work at 7 pm because he took other jobs. He quoted us £1500 but charged us £1745 and once he received the payment he refused to rectify the faults and left the rubbish outside in the front garden saying that it wasn’t his job to take the old laminate flooring away despite having agreed to do it when he accepted the job We had a horrible experience with Stephen and warn other people about this guy
Phillips Projects
Rating: 5 out of 5
Phillips Projects are a family run building company based in North London. We specialise in bathrooms, loft conversions, extensions and refurbishments. We have 50 years combined experience within the building trade. We offer professional and trustworthy advise.
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Latest review:
Loft Conversion- 5 Dec 2016
I could not recommend One Stop Lofts more highly. An extremely efficient job carried out to time, finished to an excellent standard and at a very competitive price. Very flexible and adaptable to changing ideas, this family team were a pleasure to work with. We would wholeheartedly support using Ray, Matt and Brad for any future work for ourselves and commend them to other potential clients.
Watson Revamps
Rating: 5 out of 5
We are a leeds based company and pride ourselves on being efficient and providing the customer with high quality workmanship. Fully qualified with over 10 years experience in all aspects of joinery and home improvements such as 1st & 2nd fix joinery, kitchen fitting, fencing to full home renovations, loft conversion and extensions. Free estimates on any job no matter how big or small and are always happy to give our specialist advice.
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Latest review:
Kitchen Fitting- 15 Jun 2022
James came round quickly to quote my new kitchen fitting, and had a lot of helpful suggestions - one of which was to go for a Howden's kitchen as opposed to Ikea. This meant that the kitchen was considerably more expensive, but I definitely have a much higher standard of kitchen as a result, and there was no wait time at all compared to a considerable one at Ikea. Going with Howden's was made possible though James, and he arranged all of the planning and was on hand to contact throughout the process. The kitchen itself looks great. Super happy with how it turned out. Cheers mate!
Roebuck Developments
Rating: 4.7 out of 5
Roebuck Developments is a well established joinery/building company with a reputation for reliability, value for money, high standards and exceptional quality. Working closely with our customers to deliver a wide range of services some of which include, loft conversions, extensions new builds and refurbishments in the commercial, domestic and educational sectors.
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Latest review:
Restoration & Refurbishment- 21 Apr 2024
Great from start to finish
KIP BUILDERS LTD
Rating: 5 out of 5
Laying foundations; Digging foundations; Brick laying; Block laying; Timber walls fixing; Stud walls; Roofing; Carpentry First fix; Carpentry Second fix; Flooring; Windows fitting; I work as an extion builder. Focusing mainly working around these types of jobs. Working on building sites for over 16 years ..
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Latest review:
Carpentry- 29 Nov 2020
Kestutis and his team helped wth our garage conversion, they were highly professional, courteous, punctual and always have a can-do attitude. My wife and I were delighted and thrilled with the end result of their work. Kestutis was also helpful with renovation of our bathrooms and kitchen. We needed lots of work doing to our property. Kestutis was very helpful and helped to get this project completed on time and cost effective too! We would be very happy to use him again for any future project.
Trinafour Joinery
Rating: 5 out of 5
All Joinery services undertaken including fencing, decking, sheds, all internal finishings, flooring etc
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Latest review:
Carpentry- 21 May 2021
Very pleased with the shed repairs, which involved replacing one wall of our shed. Nick came promptly with all the material, worked hard to finish the job and took away all the debris. An excellent job. He also did some small joinery jobs in the house to our complete satisfaction. Very pleased to have found him!
Morningside Joinery
Rating: 5 out of 5
Small family business with 40+ years experience in the trade. All jobs big or small from locks, doors, windows, timber floors, renovations, kitchens, attic conversions, small repairs. All timber related works. Can also provide other trades if necessary.
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Latest review:
Hard Flooring- 17 Apr 2018
Gary and his team were very professional and did an excellent job fitting a laminate floor in my kitchen. The existing original flooring was uneven and they did a great job of fitting over the original floor boards and working around my newly-fit kitchen cabinets. Also, he was able to call on his network of tradespeople including a plumber and electrician at short notice to fix unexpected problems encountered during the job. Overall excellent workmanship, easy to communicate with, and very friendly. Highly recommended.
Collins carpentry
Rating: 5 out of 5
We are a small business based in the new forest. We undertake all aspects of carpentry from cut roofing to second fix as well as decking and garden room building to name a few. We always finish our work to a very high standard.
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Latest review:
Sam and his team constructed the warm roof and cedar clad our extension. He did a great job from start to finish. He was very courteous, on time and left the site tidy. I would not hestitate to recommend him.
Stevie carpentry
Rating: 5 out of 5
Carpenter/joiner/timber frame erector
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Latest review:
We required a new roof to our shed , Stevie McCleary provided both excellent advice, on the materials that should be used and the way he was going to proceed with the job. He kept me informed at every stage. He was polite , reliable, respectful and extremely professional at every stage of the job, which was completed in the timeline mentioned at the beginning of the job. I would not hesitate in using his services again in the future.
ABC Construction (SCOTLAND) Ltd
Rating: 5 out of 5
As an experienced Structural Engineer with the team of great builders (including joiners, roofers, plumbers, decorators etc.) I provide my clients with the Design and Build service.
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Latest review:
Restoration & Refurbishment- 13 Mar 2016
Thank you Andrew and team for all your hard work on our period flat refurbishment. Complete gutting of flat, slapping, floor relay, kitchen, bathroom, windows, wiring, plumbing.... basically a rebuild! Andrew was flexible and helpful throughout the building process and has returned to iron out any niggles post build. Love the flat now. Would definitely use ABC Construction again.
Building Restoration Specialist
Rating: 5 out of 5
Traditional approach to building, construction, restoration, renovation and repair. Qualified, competent and experienced.
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Latest review:
Guttering- 9 May 2018
Absolutely fantastic job. Worked like a trooper in all weathers. Nothing was too much Trouble and the work has been finished to a very high standard. Cleared up after himself each evening and worked through into the evenings often. Even the rain did not put him off and carried on working soaked through. If you are looking for a true expert for finlock guttering removal or replacement. Jason Shaw is your man. We had all concrete guttering around the bungalow removed and also removed from inside the conservatory. He made sure all openings were securely covered , taped up so we had no dust in rest of the house. We can highly recommend him .