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Find a loft conversion specialist

This page has everything you’ll need to know about finding and hiring a local loft conversion specialist. Learn about this trade and how they can help you around the home.

Browse Loft Conversion Specialists

Take a look at our Loft Conversion Specialists profiles, read reviews and request quotes directly.

Greater London Build is a team Loft Conversion Specialists this includes plumbers, electricians, roofers & plasterers. Offering additional services to complete your Loft Conversion to the very end. We'll go above and beyond to ensure you are satisfied.

Latest homeowner review

Reviewed by Bud on 18/1/2018

Excellent builders, gave a detailed quote with time taken to explain things. Very trustworthy and very easy to get along with. Workmenship is of very high quality on my loft conversion. They will be carrying out another build for me later this. I would highly recommend them.

Any general maintaince undertaken reliable friendly and reasonable, been in the trade for around five years, will like to help you with getting the job done

Latest homeowner review

Reviewed by Louise on 22/1/2019

Excellent young man fantastic job and done quickly and professionally

A small friendly company with 20 years experience. We undertake all aspects of roofing work from maintenance to a new roof . All estimates are free. We are fully insured with heat insurance too.

Latest homeowner review

Reviewed by susan on 20/2/2019

I was very pleased with the professionalism of Anthony. He arrived on time and his work was excellent. He left the site clean and tidy. Lovely man to deal with.

jaben roofing are an established professional fully insured roofing and loft conversion company covering the south east and london. we are specialists in all aspects of roofing including flat and pitched roofs we also offer a full loft conversion service

Latest homeowner review

Reviewed by Sarah on 22/2/2019

no comments given

At DMCC Construction ,we have over 30 years experience in the Construction industry. All operatives that work for DMCC are time served tradesmen. We take pride in our work and lead by example in the construction industry. We cover all aspects of building and roofing works.

Latest homeowner review

Reviewed by Carla on 22/2/2019

Such an amazing group if lads!! Can't thank them enough for everything they have done over the last 2 weeks!! We've had major pointing work done and interior plaster work which they have done an amazing job! Thanks to Carl, Paul, Curtis,Mick,Michael,Nicky & Dennis ?? very polite bunch and extremely tidy workers! Would highly recommend them to anyone needing work doing to their home. Thanks again guys!! ????

Insulation Direct is a fast-growing family company that is doing its best to raise awareness to reduce energy consumption. Insulation Direct has now expanded into offering advanced insulation solutions to help the UK save on their energy bills.

Latest homeowner review

Reviewed by Paul on 4/1/2019

Easy to deal with and friendly service. Turned up when agreed and cracked on with the job and left things very tidy. Happy to recommend to others and use their services again

We are a specialist Loft Conversion company with over 15 years experience. We offer a complete solution, design, planning and construction for your project. With references all over London you are welcome to view past projects. Call for a free quotation.

Latest homeowner review

Reviewed by Abid on 28/1/2019

When looking for a builder for my loft conversion my main aim was to find someone honest, reliable and professional and my experience of Unique Lofts was that they were all of these things. The team in charge of the build were experienced, approachable and committed to doing a good job. The job started in mid-August 2018 and went until late Oct/Early November and everything went to plan. I now have a converted loft that I am extremely happy with. I would recommended Unique Lofts unreservedly.

HOUSE CONVERSIONS - EXTENSIONS - KITCHENS - BATHROOMS - ROOM DESIGN - BESPOKE FEATURES - ALL BUILDING WORK CONSIDERED

Latest homeowner review

Reviewed by May on 23/1/2019

Excellent job done. Very professional from the offset and throughout, and no hidden costs very fair prices! The standard of the job was brilliant and I couldn’t recommend a better service. I’ve had a lot of builders in and out of my home in the past years, and I can honestly say Winch Construction were up there. Amazing job.

Latest homeowner review

Reviewed by Jagdeep on 8/10/2018

Outstanding work from GTB who were willing to take on my project midway (after our previous builders left) at a fair price. They rescued the build and finished to a high standard working quickly and with consideration. Highly recommended.

Assured builders ltd is a complete building service covering all aspects of building trade from footings to finishings. We thrive on our quality and attention to detail. From bathroom/kitchen renovations to full extensions and loft conversions.

Latest homeowner review

Reviewed by Kemelia on 8/10/2018

Summary of experience: • Team is extremely hardworking • Professional workers completed to high standard • Offered good advice due to extensive experience • Remained visible throughout project • New kitchen, chimney breast removed, loft conversion, new front wall, flooring • Exceptional tradesman-ship • Great assistance with legal requirements (party wall agreement) • Very good communication • Honest, trustworthy team with high integrity • DEFINETLY WOULD RECOMMEND, EXTREMELY PLEASED WITH THE RESULT

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Loft Conversion Specialists - what you need to know

What a loft conversion specialist can help with

  • Loft conversions.
  • Garage conversions.
  • Extensions.
  • Roof light conversions.
  • Dormer conversions.
  • Hip-to-gable conversions.
  • Mansard conversions.
sm loft conversion 1

Having a loft conversion is a major piece of work but depending on your circumstances it might well be easier than moving. You’ll gain a substantial amount of space, plus you’ll also add significant value to your home.

Costs for common loft conversion jobs

Type of conversion Low High
Roof light conversion £20,000 £30,000
Dormer conversion £30,000 £40,000
Hip-to-gable conversion £25,000 £35,000
Mansard conversion £35,000 £45,000

Can your loft be converted?

If you have a look down your street, that’ll give you the quickest indication of whether your loft can be converted. If there are similar houses with loft conversions, it’s very likely you can have one too.

You should also look at the internal height of your loft as it currently is. If the tallest part of it is at least 2.2m-2.5m you shouldn’t have any issue converting.

A typical roof is supported with either trusses or rafters, which are easily identified by just looking in the loft. Rafters follow the edge of the roof, meaning the space below it is empty. Trusses criss-cross through the loft.

Trusses cost more to convert because extra structural support is needed to replace them.

Lastly you should also think about how much space you have below the loft. A staircase will have to be built so that the loft conversion is habitable, which will take up some space in the room below – can you afford to lose that space?

What’s a roof light conversion?

If your loft is pretty spacious already, and could function as a room without needing to extend the walls, then a roof light conversion could be for you. It’s the least disruptive conversion and will turn your loft into a habitable room. You’ll get windows installed, as well as a floor and a stairwell, plus they’ll obviously spruce the room up with any necessary insulation, plasterboard and decorating.

What’s a dormer conversion?

These are the most common and most suitable for a sloped A-shaped roof. The extension simply protrudes from the slope of the roof to create extra space.

What’s a hip-to-gable conversion?

A ‘hip’ roof is where your roof slopes down towards the side of your property, usually on a detached or semi-detached house. Much like a dormer, this side of the slope is extended to create a new room.

What’s a mansard conversion?

Mansard conversions basically make all sides of your roof vertical, which is the most expensive conversion, but also results in the most space.

The qualifications your loft conversion specialist needs

If your loft conversion specialist has any sort of membership or qualification that isn’t covered below, it’s always a good idea to just ask for proof. They might also have a card from the Construction Skills Certification Scheme

Trade bodies

 The first thing you can do when considering a loft conversion specialist is to check they’re registered with an official trade body. There are several in the UK such as The Chartered Institute of Building (CIOB) and the Federation of Master Builders (FMB). These bodies have criteria that must be met in order to become a member, demonstrating the extent of their experience.

For example, with CIOB membership they look for things like degrees, technical qualifications, military training and educational backgrounds.

 You can see a full list of bodies on the British Associations site, or with TrustMark.

Planning permission for loft conversion jobs

Planning permission isn’t normally needed, but permission is required where you extend or alter the roof space and it exceeds certain specified limits and conditions.

Insurance for loft conversion specialists

Public liability insurance

Your loft conversion specialist definitely needs to have public liability insurance, which will cover you and them if someone gets hurt or if the property is damaged.

Insurance-backed warranties or guarantees 

You can get this as part of the cost of the work, if your specialist offers it. Check exactly what’s covered - it should include the cost of finishing or fixing the work if there are any issues.

Home and contents insurance

If you have home or contents insurance, check with your insurer to make sure you'll be covered while the work is going on. You might have to pay more for your insurance during and after the work. Your insurer will probably want to know what builder you’re using and what insurance they have.

Building regulations for loft conversions

These are the key things you’ll need to be aware of, but it’s best to consult the Planning Portal for full, up-to-date info.

Fire safety - you’ll need fire-resistant doors for the new room, along with mains-powered smoke alarms.

Floors and beams – all structural floors and supports will need to be sufficient for the new room.

Sound insulation between rooms and walls.

Stairs – you need a permanent staircase rather than a ladder or retractable staircase, so that the room can be easily escaped from in case of a fire.

Walls – new walls will have to support existing or new roofs where existing supports have been removed.

Questions you should ask a loft conversion specialist

  • Do they have public liability insurance and what does this cover?
  • Are they registered with a competent person scheme and will they take care of all planning permissions / building regulation approvals?
  • Do they offer insurance-backed warranties?
  • How long have they been trading for?
  • Can they give you up to 3 references of recent work they’ve completed?
  • Do they use sub-contractors or their own employees?
  • What experience do their sub-contractors/employees have and are they covered by insurance?
  • Will they give a guarantee/warranty for the work and how long does it last?
  • Will they source all materials and equipment?

See the latest questions that homeowners have been asking loft conversion specialists.

Loft conversion ideas

See how a loft conversion can be a great value home improvement, perfect for gaining extra space. You can also read Phil Spencer’s thoughts on loft conversions too.

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  • Get quotes

    Up to 3 tradespeople can provide a quote, but on average you'll get 1-2.

  • Check ratings

    Look at each tradesperson's profile page to see their ratings and reviews.

  • Pick a tradesperson

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  • Job done

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Type of conversion: Dormer conversion Room(s) to be in the conversion: 1 x bathroom, 2 x bedrooms we would like a quote as soon as possible so...

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How our service works

  1. Create a job - it's free

    We'll connect you with the right tradesmen, from over 30 different trades.

  2. Get quotes

    Up to 3 tradesmen can provide a quote, but on average you'll get 1-2.

  3. Check ratings

    Look at each tradesperson's profile to see their ratings and reviews.

  4. Pick a tradesperson

    Use our homeowner checklist for extra tips on choosing a tradesperson.

  5. Job done

    Leave a rating for your tradesperson based on quality, reliablity and value.