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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.

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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 David on 10/12/2018

Turn up on time, inspected damage, gave good advice on prevention of possible more damage in future, finished job quickly. Excellent service.

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.

Latest homeowner review

Reviewed by Hannah on 7/12/2018

Excellent job done. Turned up on time, very tidy. Very polite and kept me updated on the job. Would recommend.

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 Helen on 26/10/2018

Very reliable hard working team! Can’t fault them! A**

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 Geraldine on 9/11/2018

Absolutely fantastic Company, on budget, clean and tidy, brilliant job. Nothing was too much trouble for Ben and Martin. I felt comfortable asking any questions and they had a wealth of knowledge and great suggestions. Half way through the build I suffered a bereavement and that's when you know you have picked the right people because they handled a very delicate situation with great proffessionalism and kindness but never losing sight of the job. Thank you very much Ben, Martin and Mark for a great Loft co

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.

Laminate and carpet fitting, painting and decorating, garden projects/decking.

Latest homeowner review

Reviewed by Gillian on 30/11/2018

Really pleased with the work, cleaned up after and excellent craftsmanship. Would highly recommend.

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

Based in Kent ,I provide a friendly and reliable service with over 15 years experience Within the construction and landscape industry. I Undertake all constuction and landscapes works from really small jobs to full garden designs to extensions , I have highly experienced tradesmen that work along side me to complete the work to a very High standard. Having worked for big company's foryears ,on big multi million pound landscapes and construction contracts Iv developed the knowledge and been taught the way to get the job done safely efficiently and to high spec.

Latest homeowner review

Reviewed by Gary on 1/12/2018

Kane and his two guys done a fantastic job in clearing my garden, removing a garage and getting to a level . Worked very hard in awful weather conditions. Would highly recommend him !!

Quality Work - Competitive Prices David Hooker started Roofing in and around Norfolk way back in the 1960s, completing thousands of jobs and creating a successful family business that has spread across generations. As a result, Hooker is now one of the most recognised names in the roofing trade in the area. Robert (David's Son) with over 30 years of experience has continued his fathers legacy in creating his own successful Roofing service.

Latest homeowner review

Reviewed by Evans on 5/10/2018

It was a pleasure to have Robert and his team working for us. Clearly Robert has extensive experience as a roofer and was the only person of the three who quoted who correctly identified all of the issues with our roof. He devised appropriate solutions to rectify the issues without trying to over sell something we didn't need. He completed the work within the time he estimated and worked cleanly. Highly recommended.

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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

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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.