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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Gary shaw builder
Rating: 5 out of 5
Hi there , both me and my son are time served carpenters.we both class ourselves as multi trades tho as over the years we have picked up other trades . We like to stay on site all the time till contract is complete.
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Latest review:
The project involved renovating my end terrace house, there was brick work to the fire chimney breast, which is fabulous and everyone comments on how eye catching it is. There was plastering throughout with new doors architraves and skirting boards with new wood flooring through entire downstairs. Gary also redesigned and fitted new kitchen and bathroom he carried out the first fix electrical work. Gary was thoughtful and knowledgeable in the planning stages and resourceful during the project. He carried out the work to an exceptionally high standard with an excellent finish which far exceeded my expectations. Gary completed the work on the agreed time and on budget. Gary has an excellent manner with people and is trustworthy I felt comfortable to have him work in the house. His further strengths are the price and the fact that he tidied up every night.
paul white & sons
Rating: 4.1 out of 5
My name is Paul White. I have much experience running my own projects as well as bigger projects on local schools and Royal Mail buildings, NHBC work and cooperate projects. My son works with me as a plumber and plasterer We are CRB checked Conscientious and hard working References available We have spent the last few years doing full refurbs for HMO landlords So i have a full team at my disposal Gas engineer Electrician Plumbers Plasterers Carpenters Painters General builders
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Latest review:
Conversions - General- 12 Sep 2025
I hired Paul to do the refurbishment work of my property in early 2023 and paid the deposit as requested. He asked for money to buy material for the kitchen in Jul 2023. I paid and informed him my choice of items as requested. The work then stopped. He has not returned the money to me until now.
MLR Construction
Rating: 5 out of 5
MLR Construction has plenty of experience in the building trade ranging from joinery, bricklaying and much more
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Latest review:
Carpentry- 7 Jun 2021
All doors sorted out as requested at a reasonable price.
Duffy construction
Rating: 5 out of 5
I am a carpenter by trade, and also do a lot of roofing work, also sub contracted to a shopfitting firm where I do a lot of kitchens , I’ve been working for myself for 9 years now
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Latest review:
Roofing (Pitched)- 21 May 2019
I selected Mark because of his Carpenter skills, he came May bank holiday and to save more damage to Tiled Canopy he erected wooden support to prevent the canopy collapsing. This gave time for assessment to be done. Mark explained clearly re the work to be done and quoted a very competitive price. Work completed to our satisfaction he was very pleasant to deal with and reassuring plus being very tidy worker will recommend and use him again
Priority Carpentry and Building
Rating: 5 out of 5
An established business offering all aspects of carpentry & general maintenance in the Cardiff and South Wales area we are a professional,reliable and friendly service. All of our work is carried out to the highest standard by fully qualified carpenters and builders and all work is fully guaranteed.
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Latest review:
Carpentry- 25 Mar 2018
Job was to replace bowing joists and level ceiling, responded very quick and would defiantly hire again
BH Builders
Rating: 5 out of 5
I have been Self Employed for over 25 years and have many happy customers and recommendations. I want to make a fair living and have happy customers at the same time.
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Latest review:
Plumbing- 1 Apr 2018
I needed a bath fitted however my bathroom was small so major companies denied and was not able to support us. Buzz offered to come and check the sizes and was able to come up with a plan that was suitable. Now I have other jobs that he is doing for us. Also prices are great. He also does the job from beginning to end-finds the item and then fits it in. He also clears up after himself.
High 'N' Dry Roofing
Rating: 5 out of 5
An established roofing company based in the north west.
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Latest review:
Roofing (Pitched)- 28 Sep 2018
Neil was great he was really helpful and did a good job for a realistic price. Am definitely going to use him again.
Casey carpentry & joinery services
Rating: 5 out of 5
Casey Carpentry & Joinery Services is owned and ran by Sean Casey, a carpenter with 23 years experience and a trusted reputation for quality workmanship.
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Latest review:
Carpentry- 4 Apr 2016
Sean was very polite, friendly and helpful. He did the work quickly and made sure I was happy with everything before putting the carpets and grips back as they were.
J Vincent Carpentry
Rating: 5 out of 5
Hi I'm Joe I am fully qualified Carpenter/Joiner. We have a Joinery Workshop that is capable of making Windows and doors etc. We also run a Loft Conversion business which we do a number of conversions a year. We offer a friendly open service and can provide references if needed.
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Latest review:
Loft Conversion- 17 Aug 2020
Summary Joe and his team brilliantly completed a complicated roof extension for us. It involved building out a dormer to the back of the house, re-arranging the stairs, re-arranging internal walls and fit out of many shelves and built in wardrobes. Organised Joe was extremely organised from the start, accurately pricing and then setting out a comprehensive contract. Then going on to organise the engineering calculations, wall party agreement and working with me to ensure my ideas were realised throughout the build. Skilled, safe, a joy to work with... Joe and his team were polite, tidy, safe, considerate and skilled in carpentry and roof building. They created a beautiful extension and added little pieces of detail that really helped personalise the works. They also have a good selection of supportive tilers, plasterers and painters who really help to create a well finished building design. Flexible and accommodated change easily. Through out the works Joe, responded to change really well, always accommodating ideas where possible and letting me know if there was any price or programme increase as a result beforehand so I could check my budget was okay. He was really inventive and great to work with often working out quicker and cheaper ways to get the job done without ever stinting on quality. In conclusion I recommend Joe and his team most highly.
Magna Building Services Ltd
Rating: 5 out of 5
At Magna Building Services we care about all the jobs we do taking pride in our quality of finish. With years experience in all aspects of building our skilled team will deliver whatever you need doing at a high quality for a fair price.
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Latest review:
Electrical- 8 Apr 2019
excellent dean was very polite also extremely good at his job would most certanley use this company again also recomend to famly and friends and thank you for your service
Scott Building & Landscaping
Rating: 4.2 out of 5
I have been in the building trade for 20years we undertake all groundworks & building work from gardens to new build houses.
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Latest review:
Groundwork & Foundations- 8 Oct 2025
Wayne arrived when he said he would, did the job and left everything perfect after groundworks. Much appreciated, highly recommend.
George Elliott & Associates
Rating: 5 out of 5
Consultant Structural Engineer. The company has been established since 1974. We provide structural engineering calculations on all domestic properties based on Building Regulation Plans provided by others. I am now a sole trader with a Structural Engineering qualification I Eng AMI Struct E. I am 54 years old and have 38 years experience.
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Latest review:
Conversions - General- 16 Aug 2017
Friendly, quick and efficient service. Would highly recommend
JRS Carpentry and Construction
Rating: 5 out of 5
Hi, I'd like to welcome you to JRS Carpentry And Construction. AS a company we always want the client to be happy with work quoted for and works completed. No job is too small and we are always happy to help with advise. We pride ourselves with nothing less than a high quality finish in every job we do.
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Latest review:
Carpentry- 5 May 2018
james arrived on time on the agreed date . did an excellent job ! very happy indeed with James - would ask him to work for me again anytime. . very neat and tidy. nice guy too ...
S & L Construction Torbay Ltd
Rating: 5 out of 5
Hi my name is Lee Singleton I'm a fully qualified carpenter, I have over 10 years in the trade, I'm a small carpentry & building company and all aspects of work are under taken. I enjoy my job and take pride in my work. I work to a very high standard.
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Latest review:
Loft Conversion- 9 Nov 2019
These guys were fantastic. The whole team was friendly, worked hard, always on site, tidy, professional and most importantly have done a brilliant job. Couldn’t recommend them enough. Sounds far fetched, but true.
B M Joinery
Rating: 5 out of 5
Over 20 years experience, covering all aspects of joinery, old and new, including flat pack, doors, floors and bespoke joinery.
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Latest review:
Fascias & Soffits- 4 Feb 2019
Hired Brian to replace the wooden fascia and soffits with upvc. Including scalloped barge boards and spires. He has done an excellent job for me. Very professional, very tidy and a friendly fella with it. The roofline looks as I expected and I am very pleased with the results. I would be very happy to recommend Brian in the future. He knows his business and is very reasonably priced.
ERCI BUILDING LTD
Rating: 5 out of 5
We are team of builders specialising in loft conversions, extensions and all aspects of general building and refurbishment, re-renovating homes. High quality standards are our priority. Specialists of our company have 10-20 years experience. Professional quotes in shortest time.
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Latest review:
Carpentry- 7 Nov 2013
Ervins done a great job. The wardrobe is now repaired and sturdy. In fact it is much more solid than it was before. He was also able to attend at short notice as everything had been taken out of the wardrobe so needed the job done urgently. Would not hesitate to use him again.