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

8967 Results

Sort by:

jl plastering&maintenance
Rating: 4.7 out of 5
Always on time and trustworthy, will give free advice and i am all ways happy in my work. What I Do --------------------------------- I have over 40 years experience in the building trade and I am a multi tradesmen.
Get in touch
Latest review:
Stonemasonry- 25 Apr 2018
Our stone wall repair was completed quickly and to a very good standard. John kept the work area tidy and kept to the price quoted. Thank you!
Gary
Rating: 5 out of 5
Quality always guaranteed. We are a team of fully qualified and self employed joiners, who take pride in all our projects. We undertake all aspects of joinery and building. No jobs to big or to small. Free quotes
Get in touch
Latest review:
Hard Flooring- 16 Mar 2022
Gary and Liam came in and did a great job on our new flooring, skirting boards and other wee jobs. Really decent honest guys, kept us updated during the time they were here. Got them coming back to do some more work for us. Would highly recommend
8T Construction
Rating: 5 out of 5
8T Construction is a general contracting company specialising in residential renovations, extensions. We put a lot of attention into a high standard finishes and a good workmanship. For us, the biggest reward is a happy customer
Get in touch
Latest review:
Hard Flooring- 12 Oct 2021
Tomasz is a reliable and professional person who made us feel at ease and really helped us out during a stressful time. His work was completed to a very high standard as he went above and beyond to make sure we got the job done before our little girl was born. We wouldn’t hesitate in calling Tomasz if we need more work in the future. Thank you Tomasz and good luck!
Wright and Wythe Construction Limited
Rating: 5 out of 5
Fully qualified carpenter & bricklayer with over 15 years experience. All building work undertaken including All aspects of carpentry & brickwork. Alterations, extensions & new builds. Hard landscaping & fencing. Block paved drives. Fully fitted kitchens, bathrooms & tiling.
Get in touch
Latest review:
Extensions- 22 Jun 2018
We are 3 weeks in to a 5-6 week build. I really cannot speak highly enough of Owen, Will and Tom. Within 3 days they had created footings, knocked down walls, dismantled our kitchen and had steels in ready for the extension. The speed of progress has continued, the project management has been outstanding, everything delivered on the right day, without lots of materials being stored on site. They have been incredibly polite to our neighbours, ensuring they are parking with consideration and not inconveniencing anyone. I feel incredibly fortunate to have found this team via this site. We look forward to working with Wright and Wrythe on future projects, we wouldn’t go anywhere else.
K Design and Build Ltd
Rating: 5 out of 5
K Design and Build Ltd are domestic and commercial builders based in Sandhurst, Berkshire who create dream homes, extensions and businesses. We offer bespoke design, renovation, refit and build services to optimise the look and functionality of your space. Our elite team has a wealth of expertise, knowledge and experience to supply our clients with the highest standards of workmanship to a range of building projects
Get in touch
Latest review:
Extensions- 8 Feb 2022
Glad we chose Karl and his team for this project. They are diligent, hardworking and uncompromising on quality. Whilst our project isn't yet finished they have been doing a great job of it so far and have collaborated well with the unforeseeable challenges which have come up so far. We very much appreciate the fact that the tradesman they use are all good at their jobs and skilled workers. It's going really well so far and we're looking forward to it being complete soon in line with the original program.
G lofts (gra)
Rating: 5 out of 5
G LOFTS is part of G R Associates building contractors and as been trading for approx- 36 years + within the construction trade Most types of works is under taken from kitchen fitting bathroom fit outs and loft and flat conversion.
Get in touch
Latest review:
Loft Conversion- 22 May 2015
Hiring a good builder with all your expectation can be a very difficult experience. Especially to those who never done large scale building work. Having herd of people nightmare is one that you always dread that you may be the next victim. With George and Stephen there is probably few of a kind out there. I did three major work with George and I cannot highly thank enough of the quality of their work. George is very knowledgeable in the trade and has huge experience in getting the perfect loft. The added extra quality he has done on the gable end is something special. He is a multi-skilled tradesman and did all the work on his own with electric, plumbing, tiling, rendering etc. He also did good job in my bathroom too but that wasn’t an easy job having a bay window. The other work he did was the rendering whole of my external building. Again I did not expect this sort of rendering but the end results was exceptional. George kept his schedule and timing and finished within the predicted timescale. He was always on time and finished the daily with good clean and tidy of the whole area of his work. There was minimum disturbance throughout the house in the entire 8 week of his work. Lastly the professionalism within his work was always kept to the agreed standard, he always updated me with written work every week which I founded very helpful. I can recommend George to anyone and definitely too friends and family. Thanks again to G Lofts for everything.
Pro Bathrooms & Kitchens
Rating: 5 out of 5
Bathrooms Kitchens Central Heating/Plumbing Carpentry Tiling Plastering RSJ Steel Work/Knock Throughs Roofing Fault Finding Disability Access 24Hr Callout Worked on many projects for private customers, commercial and local authorities including insurance work. Highly skilled individual with attention to detail in all aspects of work and customer needs. I specialise in Full Bathroom & Kitchen renovations from floor to ceiling but also cover all aspects of the building trade.
Get in touch
Latest review:
Bathroom Fitting- 27 Aug 2020
What can I say! A true professional, polite and very trustworthy. Eddie has given us our dream bathroom, he advised us on the best way to fit our room out. His prices are very competitive. Would highly recommend Eddie.
Greg Coates Carpentry
Rating: 5 out of 5
Professional skilled Carpenter- Friendly, 15years Experience, Local working in Leigh-on-Sea/Rayleigh area for 7 years. Doors, skirting, staircases, made measure Mdf wardrobes/cupboards, kitchens, flooring, roofing, flat roofs, Hardi-plank cladding. Project management Loft conversions, Extensions, Porch, Timber frame, House refurbs, Part-builds, New builds.
Get in touch
Latest review:
Carpentry- 22 Feb 2020
Greg was brilliant! He phoned me up in the morning and came round to complete the job the same day. The cost was more than reasonable and he cleaned up what very little mess there was. This may only have been a small job but I was really pleased with the outcome. I would certainly look to hire him again the future should the need arise.
ATICO
Rating: 5 out of 5
My name is Thomas and I'm owner manager of ATICO. If you use us for your building work, I hope that your experience reflects our passion for working with the customer to create quality job at a price considered to be fair to all.
Get in touch
Latest review:
Loft Conversion- 6 Nov 2018
Tomasz installed a loft extension and rearranged the kitchen and bathroom in our Earlsfield flat. He did a superb job. Always highly professional, offering sensible ideas and sound advice, he delivered a fabulous job on time and on budget. I recommend him very highly indeed.
Glenn nixon
Rating: 5 out of 5
All aspects of carpentry doors kitchens built in cupboards all types of flooring partition work Coving
Get in touch
Latest review:
Carpentry- 25 Nov 2021
Glen worked making jobs done i.e new panelled doors, so they fitted perfectly. Would definitely recommend.
Cordy Construction
Rating: 4.4 out of 5
When it comes to choosing a building company, Cordy Construction stands out for several reasons. First, our team is highly skilled and experienced, ensuring top-notch craftsmanship and attention to detail in every project. Second, we prioritize open communication with our clients, keeping you involved and informed every step of the way. Lastly, we are committed to delivering projects on time and within budget, while never compromising on quality. With Cordy Construction, you can trust that your vision will be brought to life with professionalism and excellence.
Get in touch
Latest review:
Plastering- 13 May 2025
Great communication. Really helpful especially with grade 2 listed building needs. Would recommend!
G&M Davis Building And Property Services
Rating: 4.7 out of 5
I'm Gary a 40 year old builder. I work to very high standards and pride myself on being on time, honest and extremely hard working. My motto is, there are no problems, only solutions. And ensure I do all I can to give every customer exactly what they want.
Get in touch
Latest review:
Bathroom Fitting- 5 Apr 2019
Gary was the total professional, finished the job to a brilliant standard in under the time he estimated. The finished result of our bathroom is exactly what we requested, finished to a very high quality. He worked over a weekend to ensure we were not waiting for our bathroom to be back in action and he was work tidy and respectful of our home. I would highly recommend.
N.S. Builders (London) Ltd
Rating: 5 out of 5
we undertake all kinds of building work such as extensions, loft conversion, full house renovation and much more. we have more than 18 years of experience in the construction industry. we normally undertake extensions, loft conversions and renovations.
Get in touch
Latest review:
Extensions- 30 Jul 2020
Very happy with the job carried out. The team were professional, efficient with the foundations, groundwork and overall extension build. Extremely patient and flexible, happy to help with extra jobs and charged fair price. Good communication and worked on weekends where necessary to get the job done. Would recommend and will be using again on future works and projects.
AVStructures
Rating: 5 out of 5
A.V. Structures is a construction company working with top-rated contractors and providing services to private clients around London. Our highly experienced team of builders has excellent skills and knowledge gained delivering projects locally and abroad. We approach each building process following Environmental, Health, and Safety guidelines. All our quotes are free, and we will always try to get a quote to you within a week of us visiting your property.
Get in touch
Latest review:
Demolition- 24 Nov 2021
We employed A.V Structures for the building of an external wall around our property, the removal of a garage and the installation of railings and gates. Throughout the 4 week programme we could not have been happier with their work. Arrival was prompt, their pace of work displayed energy and purpose. They were mindful of us and our neighbours and made sure the area was left clean and tidy at the end of each days work.in addition the workmen were courteous and kept us fully informed. Alex, the owner of the company, kept in close contact with us to assure himself of our satisfaction. He came on site at intervals to check that all was going according to plan. We therefore felt completely confident that quality and outcomes were important to him. Employing A.V Structures was a decision we were pleased to have made. We would use them again without hesitation and recommend them highly to anyone considering similar work.
Ogival Ltd
Rating: 4.5 out of 5
Ogival Ltd, located in North Kensington, is a trusted local builder with extensive experience. Your one-stop provider of home refurbishments, property modifications, and alterations What separates Ogival from our competition is our exceptional service and support. We thrive on being a unique, personable company because building trusting relationships with our customers ensures a successful and enjoyable renovation project. We offer a full range of building services, from major rebuilds to smaller jobs We offer a 6-month Warranty on labour.
Get in touch
Latest review:
I have used this company for years for many different jobs including painting my whole house, tiling my bathroom, laying flooring, astroturfing my garden and also putting up fences too, they are very knowledgable, professional and polite, the work is always done efficiently to a very high standard and I’ve never had an issue. I recommend Emanuel and his team to everybody. If you want a company that care, I’d stick with Ovigal!
LMG Building Services Ltd
Rating: 5 out of 5
We are a family run business offering you a personal touch. Work is always completed to a high standard. We are members of the Federation of Master Builders & Our previous customers will be happy to confirm the level of Service, Quality & attention to detail that we provide as standard.
Get in touch
Latest review:
Conversions - General- 3 Dec 2021
Would 100% recommend Lee. His professionalism and attention to detail was fantastic. Always available for questions outside of working hours (rare for a builder) and an overall nice guy. I'm definitely keeping his number for any future work I do.