Loft Conversion Companies in Chalfont St Giles

Name: Loft Conversion Company
Brand: MyBuilder
SKU: loft-conversion-company
Rating: 4 (7 reviews)

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Some of our top rated loft conversion companies in Chalfont St Giles

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Star 5 construction ltd
Rating: 5 out of 5
Loft Conversion Company in Chalfont St Giles
Hi everyone,Star 5 construction Ltd provides best quality of work with affordable price and finish your project with in giving time. For coustmer satisfaction we will provide you our liability insurance details. Our services: New build Extension. New loft conversation and new Roofing. Supply and fit new double glazed windows and doors, with K silicone rendering or Standard plastering. All types interior and exterior design and build. All types supplied and install steel beams. Free quotes and estimate. Many more offers if you need any information feel free to send us email with your plan, happy to provide you all the information.
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Latest review:
Mr singh and his team have done an excellent job,couldn’t have been more happier.Mr Singh’s experience and advice has saved me some serious money.really happy with the final product. It was big and complex task but it was completed in very efficient and professional manner.without any hesitation I’ll be recommending their services to friends and family
Bros con limited
Rating: 5 out of 5
Loft Conversion Company in Chalfont St Giles
experience in both commercial and private property renovations specializing in Extensions, House refurbishment, Loft and Garage conversions, Driveways and Patios. Please get in touch for a friendly free-of-charge no obligation consultation. Many thanks, Teodor
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Latest review:
I received quotes from multiple builders to build a garden office, and choose Teodor as he provided the best quote. His workmanship is top quality and he built me a fantastic garden office which I am enjoying immensely. Teodor was very professional and reliable, keeping me involved throughout the whole project. I will be using his services again in the New Year and can wholeheartedly recommend Teodor.
Harwinder
Rating: 5 out of 5
Loft Conversion Company in Chalfont St Giles
Welcome to my MyBuilder profile! With 25 years of experience in construction, I specialize in carpentry, roofing, loft conversions, and extensions. I've worked with numerous large companies, delivering high-quality results tailored to clients' needs. I'm committed to excellence, and I look forward to making your vision come to life.
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Latest review:
Roofing (Pitched)- 20 Apr 2023
Harwinder and his roofers did too quality work for us. First time we used them and we were very happy with the results. Reliable and reasonable. We would highly recommend them and we shall be using them in future
S&s construction
Rating: 5 out of 5
Loft Conversion Company in Chalfont St Giles
We can do , electric, plumbing, plastering , painting all building work
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Latest review:
It was a time challenge for me to move to newly purchased house as my rental agreement was due. I got Saby from personal reference. All home colour, wiring, removing old big boiler, water tank and rerouting of all pipe work. Roof repair , new two en suites construction, whole IKEA kitchen. He delivered as per our expectation and design in 8 weeks. No time waste and all material he arranged. I am very happy the way he professionally handled the work and delivered on time. I would recommend him. Make sure your design is ready and perfect. Discuss with him before start and avoid changes for best results.
Leon lofts & extensions
Rating: 5 out of 5
Loft Conversion Company in Chalfont St Giles
My name is Edward, I have specialised in loft conversations for the last 20 years. I have dealt with most problems that might occur in a property. I have always worked by word of the mouth because my reputation is immaculate. I take my time with the task at hand and get it done right, leaving all customers satisfied. New in the area and I’m trying to start a new clientele in the area. I would appreciate a chance to gain your trust by giving you quality work at affordable price.
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Latest review:
Carpentry- 22 Feb 2020
Edwart is not only highly professional, he is also multi-skilled and prepared to go the extra mile. He fitted an oak front door into a hardwood frame for us and made an excellent job of it. He is a carpenter, but also has expertise with electrics - he fitted outside lights and installed new kitchen dimmer switches as well. I was impressed by the way he was prepared to give up his time until all of the niggling issues were sorted out; he has something of the perfectionist about him. He therefore comes thoroughly recommended.
Project-Wise
Rating: 5 out of 5
Loft Conversion Company in Chalfont St Giles
We offer a friendly reliable service that is second to none and can put you in contact lots of past clients who will give us glowing references on request. I have spent 30 years in the building industry, a time served bricklayer who has gained a very good knowledge of all aspects involved and trade requirements. This is why I offer a service you can rely on and guarantee all our work, which is carried out to the highest standard.
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Latest review:
Bricklaying- 16 Sep 2015
Two good Brickies did a grey job on building a double cavity wall on my garage / gym. Really pleased with the wrk, everything plumb and level, nice finish on the mortar joints of the outer red brickwork. Would definitely use these guys again.
Sandha brothers construction ltd
Rating: 5 out of 5
Loft Conversion Company in Chalfont St Giles
hi.my name is Sharnjit and we have a expert team who build up a nice job. I have a 15 years experience. We done lot of extension. Loft Conversions . New builds house. I have many satisfied customers. Can provide excellent references.
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Latest review:
Bathroom Fitting- 8 Aug 2019
Sharnjit did a very good job on my bathroom he gave very good advice I am please with my shower.
JS CONSTRUCTION BUILDING SERVICES LTD
Rating: 5 out of 5
Loft Conversion Company in Chalfont St Giles
Ive been working as a Builder in UK for over 20 years now doing all variety of jobs through the time. Im based in West London but me and my team can travel almost anywhere to get the job done. Like i mentioned through out the time i did all kinds of jobs from building houses from zero to small jobs as bathroom fitting or refurbishing. With my team i always try to make sure to fulfil needs of my customers. We are reliable.
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Latest review:
2 major projects: upgrade to our home and rental property over past year included: substantial extension, new kitchen, renewed plumbing/electrics, complete redecoration and external thermal cladding. Final costs as per original quote. Work of a high standard carried out on time. Honest, professional and easy to deal with. Will use them again. Highly recommended.
Adam Renovations Ltd
Rating: 5 out of 5
Loft Conversion Company in Chalfont St Giles
Adam Group Ltd is an established residential construction and development company, incorporated in 2010, specialising in high-quality refurbishments, extensions, loft conversions and new build projects across London and the South East. We work with homeowners, investors and local authorities on projects ranging from £150,000 to £3 million, covering everything from full house refurbishments and structural reconfigurations to large-scale extensions, loft conversions and ground-up developments. Since inception, we have successfully delivered over 250 projects, building a strong track record for reliability, quality and consistent delivery. In 2025 alone, the company achieved a turnover of £4.5 million, reflecting both our capacity and the level of projects we undertake. Our team provides an end-to-end service, including planning coordination, structural works and full construction delivery. We are experienced in working alongside architects, engineers and local authorities to ensure projects run smoothly and comply with all regulatory requirements. We maintain a 4.9-star rating on Google, with the majority of our work coming from repeat clients and referrals — a testament to our professional approach, clear communication and attention to detail. If you are planning a refurbishment, extension or new build and want a contractor with a proven track record and the capability to deliver complex residential projects, we would be happy to discuss your requirements.
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Latest review:
Loft Conversion- 5 May 2017
Artjom and his team have done a wonerful job on our loft conversion and house renovation. We are very pleased at the transformation. Although not the cheapest quote we obtained, they were highly professional, kept the noise down and cleaned up after themselves. We also added several other jobs to our initial quote and they undertook these as requested. It is important to keep a record of everything you ask to be done. They worked very fast and were able to complete everything within 2 months - it helped that our house was empty at the time, so they didn't have to deal with us living there at the same time as the works were being carried out. Overall, I would highly recommend Adam Renovations for any building works you need done to your property.
15158290 Ltd
Rating: 5 out of 5
Loft Conversion Company in Chalfont St Giles
JVS Da-Vinci Builders is a reputable construction company based in Southall, London, with extensive experience in residential and commercial projects. Our skilled team has successfully completed over 30 projects, specializing in services such as loft conversions, extensions, refurbishments, interior design, and custom cabinetry. We are committed to delivering high-quality craftsmanship, exceptional customer service, and innovative solutions that enhance the functionality and aesthetic appeal of our clients’ spaces. Through our meticulous planning, design, and building processes, we ensure that every project is completed to the highest standards and within budget.
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Latest review:
I recently hired Vithesh for a loft conversion, and I couldn't be happier with the results! He completed the project with exceptional quality and efficiency. The structural floor beams and steel structure were flawlessly installed, and the roof comes with a reassuring 10-year warranty. What impressed me the most was his ability to complete the structural job in just 3 weeks, even though the original estimate was 5 weeks. His commitment to meeting deadlines and delivering high-quality work is truly commendable. I’m absolutely thrilled with the outcome and will definitely be calling him for any future projects in my home. Thank you, Vithesh, for a job well done!
Alex
Rating: 5 out of 5
Loft Conversion Company in Chalfont St Giles
Hi I offer good quality work which includes general construction works, painting interior, exterior, walls and ceiling repair and wood work I also offer handy man jobs, decking installation and repair,groundwork jobs.
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Latest review:
Carpentry- 4 Jun 2026
I recently had Alex install my 12-foot pegola, and I couldn't be happier with the result. From start to finish, Alex was patient, listened carefully to what I wanted, and took the time to ensure everything was done properly. He is hardworking, reliable, respectful, and kept the work area tidy throughout the project. What impressed me most was how efficiently he worked without compromising on quality. The pegola was completed to a very satisfactory standard, and the finished result looks fantastic. I would have no hesitation in recommending Alex to anyone looking for a skilled and trustworthy tradesperson. I would gladly use his services again for future projects.
FBF Construction Ltd
Rating: 5 out of 5
Loft Conversion Company in Chalfont St Giles
We take all types of jobs from demolish a house and rebuild at the highest standards.
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Latest review:
Florin extended and completely refurbished our 4-bedroom semi-detached house. This included extensive steelwork, underfloor heating, complete re-plumbing and rewiring, excavation, and an entirely new slate roof as well as varying extensions up to three floors high. I cannot say enough good things about his workmanship, professionalism and reliability. His workmanship makes a perfectionist like myself happy. He is also completely professional: even with our difficult neighbours he was always courteous and understanding, and even helped them sort out issues at a moment’s notice that had nothing to do with his building work on our property. And he is also thoroughly reliable. I cannot think of any instance where he committed to something and did not deliver — he even managed to finish all the work on our house ahead of schedule and on budget. We have been so happy with his work that we contracted him to build us a summer house as well, from scratch, and to complete revamping our front garden including elements of hard landscaping. Again he delivered flawlessly and we are very happy with the result. We also continually receive positive comments from people passing by and just seeing the front garden. We have used several other builders in the past on other properties, including far more expensive ones, and none compare to his level of competence, attention to detail in his workmanship, his complete professionalism and thorough reliability. Now that we have found Florin, we will never look for another builder again. I just hope once others experience what he delivers for themselves he will still have some availability for us in the future!
SPH
Rating: 5 out of 5
Loft Conversion Company in Chalfont St Giles
With over 20 years of experience in Carpentry, building, Electrical, and plumbing services we are able to take on ambitious bespoke projects as well as provide an effective maintenance service for any plumbing or electrical issues . We can build extensions, loft conversions, fit kitchens, bathrooms, and carry out all electrical and plumbing services.
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Latest review:
Bathroom Fitting- 30 Jul 2019
Stefan did a great job gutting my en suite and putting a new bathroom in. Great attention to detail and flexible with changes some things as I wanted. Good time keeping you and would recommend!
Botnari Construction
Rating: 5 out of 5
Loft Conversion Company in Chalfont St Giles
Botnari Construction. Every project is unique to every homeowner with small details having significant importance. What matters to our clients is what matters to us and these are the problems that we like to solve. We specialise in all Construction works with many years being in the industry, making sure we deliver a fast, efficient and well-organised project at its best.
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Latest review:
Botnari Construction recently completed a project for me and I was extremely impressed with the way they work. From the quality completed to great time management I was very happy with the works carried out. Will definitely be using in the future. 10/10
G&R Carpentry
Rating: 5 out of 5
Loft Conversion Company in Chalfont St Giles
We are a small business that takes on most aspects of building work and have the correct trades for the jobs that are required .
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Latest review:
Carpentry- 15 Feb 2018
Very pleased with the end result. The radiator cover Gary made, matched perfectly the others I had and fitted perfectly, great finish too
Arif domi limited
Rating: 5 out of 5
Loft Conversion Company in Chalfont St Giles
Hello, I’m Arif Domi, Your Trusted Fencing Expert! At Arif Domi Limited ,we specialize in high-quality fencing solutions tailored to your needs. Whether you’re looking for security, privacy, or a decorative touch for your property, we offer expert craftsmanship and durable materials to ensure your fence stands strong for years to come. With our experience, we take pride in delivering professional installations, repairs, and custom designs for residential and commercial properties. Customer satisfaction is our top priority, and we’re committed to providing reliable service at competitive prices. Let’s discuss how we can enhance your property with the perfect fence. Contact me today for a free consultation and quotes. Looking forward to working with you!
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Top rated Loft Conversion Companies

Our Loft Conversion Companies in Chalfont St Giles, are rated 4 out of 5 based on 7 reviews from customers like you.

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What services are offered by loft conversion companies in Chalfont St Giles?

Converting a loft often entails many jobs - some of which you likely haven’t even considered! Fortunately, a professional loft conversion company in Chalfont St Giles will be able to handle multiple services, ensuring your transformed loft is fit for purpose.

Some of the services loft conversion companies can provide include:

Full loft conversions: Complete design and build projects when structural alterations are needed
Dormer loft conversions: Add extra headroom and floor space with a dormer extension
Velux or rooflight conversions: Ideal for lofts with good existing height; minimal structural change required
Hip-to-gable conversions: Extend the sloped roof to create more usable space
Mansard conversions: A major structural change offering maximum space.
Loft storage conversions: Add flooring, lighting, and insulation for clean, usable storage
Skylight or roof window fitting: Install natural light solutions like Velux windows
Staircase installation: Design and build bespoke stair access to your new loft
Insulation, heating, and ventilation upgrades: Ensure comfort and compliance with energy standards
Design and planning services: Architectural drawings, planning permission, and building regulation approval

Post your job to MyBuilder and you'll be matched with loft conversion companies in Chalfont St Giles who are interested and available to help. And with the reviews of past customers and the freedom to compare the quotes of similar tradespeople, all in the same place, the ball’s in your court.

Average costs of loft conversion companies in Chalfont St Giles

Loft conversions tend to be charged on a project basis, rather than by the hour, as they often involve weeks or even months of work.

The cost of your loft conversion depends on a few things, including the style of loft conversion and materials you choose and the size of your property.

That being said, here are average prices for common types of conversion work:

Full loft conversions: £45,000–£70,000+
Dormer loft conversions: £55,000–£85,000+
Velux or rooflight conversions: £25,000–£45,000
Hip-to-gable conversions: £50,000–£80,000+
Mansard conversions: £70,000–£100,000+
Loft storage conversions: £10,000–£20,000
Roof window fitting or skylight installation costs: £1,000–£2,500 per window
Staircase installation costs: £2,000–£5,000
Insulation, heating, and ventilation upgrades: £2,000–£6,000
Design and planning services: £1,500–£4,000

Take a look at our guide to loft conversion costs to get a more detailed breakdown of the different options available when using a Chalfont St Giles loft conversion company.

Find a loft conversion company in Chalfont St Giles with MyBuilder

When you’re planning major work like a loft conversion, you’ll want to find the right tradesperson for the job. The great news is, MyBuilder has already done all the time-consuming work for you.

All you need to do is post your job on MyBuilder, completely for free, and we’ll share it with loft conversion companies near you in and around Chalfont St Giles.

Step 1: Post your job on MyBuilder

Provide a detailed description of your loft conversion project, including the type of conversion you want, any structural changes, preferred materials, and your ideal timeline. Once posted, local loft conversion companies in Chalfont St Giles can view your job and register their interest.

Step 2: Review and compare Chalfont St Giles loft conversion companies

Browse the profiles of interested loft conversion companies. On MyBuilder, you can view photos of previous projects alongside customer reviews, compare quotes, and see the types of conversions they specialise in.

Step 3: Contact and discuss your project

Once you’ve reviewed local Chalfont St Giles loft conversion companies, you can reach out to those that interest you to ask questions, clarify details, and request more specific quotes. At this stage, be sure to discuss vital aspects like planning permission, design options, and estimated timelines to ensure the company meets your requirements.

Step 4: Hire the right Chalfont St Giles loft conversion company

Once you’re satisfied with their experience, quotes, and approach, you can confirm your hire and start planning your loft conversion.

You can also take a look at our loft conversion specialist hiring guide to help inform your choice. All tradespeople undergo checks at registration - such as verifying ID documents, company details, and certifications for regulated jobs and doing skill assessments - allowing you to hire with confidence.

Questions to ask local loft conversion companies in Chalfont St Giles

Choosing the right loft conversion company for your job requires finding someone who understands your home and your goals.

Find out which company can share your vision by asking the following questions:

What experience do you have with loft conversions in Chalfont St Giles?

A local loft conversion company in Chalfont St Giles will know the types of properties and building styles common in your area, as well as the planning and building regulations that apply. Ask about similar projects they’ve completed locally.

Are you insured, and do you offer a warranty for your work?

Insurance protects your home during the loft conversion process, while a warranty shows the company’s confidence in the quality and durability of their work.

How do you handle planning permission and building regulations?

Established loft conversion companies in Chalfont St Giles should understand local planning rules and building regulations. Ask how they’ll manage permissions, inspections, and compliance to avoid delays or legal issues.

What is included in your quote?

Ensure the quote covers all essential aspects of the loft conversion: structural work, windows or skylights, staircases, insulation, labour, and any additional fees. Understanding this upfront prevents unexpected costs later.

Do you manage the project from start to finish?

Some Chalfont St Giles loft conversion companies offer full project management, coordinating architects, builders, and tradespeople. Others may only handle part of the conversion. Clarifying this early on helps you understand what support to expect.

FAQ: Common questions about loft conversions in Chalfont St Giles

How long does a loft conversion take?

Typically, a loft conversion can take between 6 and 12 weeks, depending on complexity, planning permissions, and any structural work required. Be sure to discuss the timeline with any potential loft conversion companies in Chalfont St Giles before agreeing to start the work.

Do I need planning permission for a loft conversion in Chalfont St Giles?

Many loft conversions fall under permitted development, but some require planning permission, especially if you’re adding a dormer, extending the roof, or living in a listed building. A professional Chalfont St Giles loft conversion company can advise and handle permissions for you.

Will a loft conversion affect my home insurance?

Yes, you’ll need to update your home insurance to cover the conversion. Inform your provider about structural changes, additional rooms, and any changes to utilities or heating systems.

Can I stay in my home during the loft conversion?

Many loft conversions allow you to remain in your home, though noise and dust are inevitable. Some Chalfont St Giles loft conversion companies offer strategies to minimise disruption, but in complex projects, temporary relocation may be advisable.