Loft Conversion Companies in Keston

Name: Loft Conversion Company
Brand: MyBuilder
SKU: loft-conversion-company
Rating: 5 (9 reviews)

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Some of our top rated loft conversion companies in Keston

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BG Lofts and Extensions LTD
Rating: 5 out of 5
Loft Conversion Company in Keston
I am an expert in construction & refurbishment for residential & commercial properties inc new builds. I undertake all kinds of work inc structural work, refurbishment, steel work, drainage, plumbing, electrics, loft conversions, kitchen installation, carpentry inc bespoke furniture & help with planning & design. By trade I am a carpenter, with 10+ years of experience where I have completed 100's of jobs. I am well priced with a very high standard of finish. References can be supplied on request
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Latest review:
Extensions- 14 Nov 2019
Bogdan himself is extremely knowledgable and his years of experience in industry is clear to see, which makes choosing him great value for money. Before and during the project he offered solutions that we hadn't considered and the would in fact save us money and be of benefit to us in the future. His team is punctual, reliable, diligent, speedy and clean! They take pride in their work which has led to a highly satisfactory work in the final build. Bogdan also has great connections to third parties (e.g. to flooring and curtains/blinds providers) which is very valuable, especially when trying to coordinate different aspects and timings of a full house redecoration. His quotes and payment structures are fair, clear and concise which is also very helpful. His communication is excellent too. All in all, Bogdan's great work took away a huge amount of stress during these projects. I would highly recommend Bogdan and his team for any prospective works someone is considering.
WS Building
Rating: 4.8 out of 5
Loft Conversion Company in Keston
I am Builder with 30 years experience in all kind of building projects.Together with my team we can provide for you a complete building service and help with advice in any aspects of building works. We specialise in: conversions, extensions, renovations, reconfigurations, basements, lofts, new kitchens and bathrooms, flooring , doors, gardening, demolition works, roofing, steel installation, plastering, painting and decorating and all others of building works included electric and plumbing.
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Latest review:
Restoration & Refurbishment- 10 Nov 2025
Professional and on time, recommended
SURREY HILLS EXTEND AND RENOVATE LIMITED
Rating: 4 out of 5
Loft Conversion Company in Keston
At Surrey Hills Extend & Renovate we promise Quality and Craftsmanship. We take pride in delivering superior quality in every detail of our work, ensuring long-lasting and visually appealing results. We have a Customer-Centric Approach and your satisfaction is our top priority. We work closely with you, understanding your needs and preferences, to create spaces that truly reflect your vision.
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Latest review:
Conservatories- 17 Feb 2025
If I could give 0! Surrey Hills Extend and Renovate Limited is a company which is a scammer. Thye have scammed 80 Plus people. Do not use them. Now thye have declined to start workk and the Directors are going for Voluntary Liquidation after taking away millions. MyBuilder should have vetted the company before putting on their site
BBN BUILDERS LTD
No reviews yet
Loft Conversion Company in Keston
We the BBN BUILDERS LTD one of the fast, reliable and trustworthy in East London. Our company main goal is providing good work with customer satisfaction. We been in this business since 2017. We specialise in Extensions, Loft , refurbishment, New builds , outhouse and all other building work .
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Blackthorn developments ltd
No reviews yet
Loft Conversion Company in Keston
I am a carpenter and roofing specialist with over 20 Years experience, over the last 15 years I grew a construction company with many employees and many happy customers, but found at times that this format lost the personal touch with the client. I recently decided to bring the business to a close and start again doing the smaller projects with direct contact which each customer, to enable me to provide a consistent and tailored service to each customer with client satisfaction being the main priority. I specialise in loft conversions, small extensions, all aspects of carpentry, garden buildings, decking, roofing, insulation, tacking and project management. I also have a large contact list of all trades so can manage all parts of any project, however I generally look for projects with enough works suitable for me to complete personally so I can be present and working on the project from start to finish.
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Local to me Builders
No reviews yet
Loft Conversion Company in Keston
General builder with 30years experience from starting as a labourer to working my way up to SMSTS site manager Undertake all aspects of building and maintenance commercial and residential domestic
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S O’Sullivan carpentry and joinery
No reviews yet
Loft Conversion Company in Keston
Hi. My name is Stuart. I am a carpenter and joiner. I have been a qualified carpenter for 30 years. I have NVQ level 1. 2. 3. And a CSCS gold card. There’s no jobs to hard. From roofing to flooring. All 1st & 2nd fit cabinets kitchens. All types of bespoke work
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Unique Lofts Ltd
Rating: 5 out of 5
Loft Conversion Company in Keston
I am a specialist loft converter and currently convert approximately 40 lofts per year. We have over 20 years experience in the loft industry and my company is fully accredited by federation of master builders, trustmark and guild of mastercraftsmen. I have many reviews and can happily show previous conversions that have been completed. We work throughout london and surrounding areas and are always pleased to offer free quotations and advice for your project.
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Latest review:
Unique Lofts created a dormer loft with ensuite bathroom with shower cubicle in our mid-terrace 2 bed house. The team Mark allocated completed the structure of the loft within 5 weeks, faster than their estimation of 6 weeks. All trades persons used by or recommend by unique we're courteous, professional and considerate when we had to work from home. The main structure budget costed exactly as budgeted and all other costs were outlined in the quote. Communication with the build team and Mark was really good and they always answered any questions or concerns I had. The work done has been complimented by all who have seen it and we are still very happy with our new loft room. I am happy to recommend Unique Lofts and Mark to anyone who is considering the big task of converting their loft.
Star 5 construction ltd
Rating: 5 out of 5
Loft Conversion Company in Keston
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
ALTUN PROPERTY CONSULTANTS UK LIMITED
Rating: 4.7 out of 5
Loft Conversion Company in Keston
Altun Property Consultants is committed in delivering best customer service by completing projects With high standards for our customer The important fundamentals of Altun Property Consultants Uk LTD We believe that our passion to deliver service and accomplish project from paper to real life has enabled us to succeed in the work we do as a company we are a Member of the Construction Line Cold Member No:00407264 SSIP Acclaim Certificate Health &safety 00407264 Master Builders Federation No:146129 and QANW MemberShip No; 42575 FENSA No:MTC Number: 19882 Attention to detail established over the years of experience has allowed me to bring a positive change in many homes and we hope to continue doing so Also we do offer 2 year 6 year 10 year warranty
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Latest review:
Restoration & Refurbishment- 24 Apr 2019
I hired Dursun Altun and his team for a full refurb of 3 bed house. His business co-ordinator Ayse was helpful throughout the whole process and listened to the design requirements we had. Dursun provided full new plumbing and new boiler and all new electrical work. We had all our windows and doors replaced and are happy with the work done. His team fitted new bathroom, shower, toilet and also the kitchen. They also did some carpentry and provided shelves and doors for closets. His team decorated/painted and cleared up at the end of the job making sure it was all left clean and tidy. They did a good job and delivered on time! Dursun and Ayse made sure we were happy with the job and were lovely to work with. The job was done to a good standard and I would recommend them.
A S Builders
Rating: 5 out of 5
Loft Conversion Company in Keston
We are a family run business in construction industry since 1990, initially started by my father and now his sons have joined the business and looking to revitalised the business through the use of up-to-date technology. We undertake all types of building work through our team of skilled labour from a small job up to New Build. Our most recent job was conversion of a detached property to 7 HMO's.
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Latest review:
Extensions- 29 Apr 2026
Heera, Jagthar and team was my first personal experience with builders. Let me tell you, it was a pleasure to have them do our porch and other renovations in the house. They are so courteous, hard working and provided a great service. Firstly, I had a comprehensively written quote breaking down all of the steps required. Heera then ensured to keep me in the loop of any developments/any changes of plan required, outlining the reasons why and options, making it easy to understand and work together to completion. Their finish was to a high quality and they would always go the extra step to ensure this. I highly recommend AS Builders for any job and will definitely use them again in the future, and would recommend to my friends and family also. If you are considering them, grab a free quote and go from there... That's what I did! Thank you AS Builders for our renovations!
ANGEL HOUSE
No reviews yet
Loft Conversion Company in Keston
We offer a wide range of services, which includes all services related to the construction, repair, landscaping of residential or commercial real estate and its surrounding zone. Our large team consists of real qualified professionals with many years of experience in various construction projects.
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Swiftbuid Solutions Ltd
No reviews yet
Loft Conversion Company in Keston
An experienced and dedicated builder with over 10 years of hands-on experience in residential, commercial, and industrial construction projects. Proficient in a wide range of building techniques, including loft conversion, house extension, house renovation etc, with a focus on quality, safety, and client satisfaction
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LoftSmart Loft Conversions
No reviews yet
Loft Conversion Company in Keston
We are loft conversion specialists with over 20 years experience creating liveable rooms. We provide full project management services from design to build to completion.
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Fire Safety Works Limited
Rating: 5 out of 5
Loft Conversion Company in Keston
Lofts ,extension, Full refurbishment plastering Painting and decorating wallpaper and much more on commercial and domestic properties 12 years of experience
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Latest review:
Painting & Decorating- 4 Jul 2017
Andi and his team did a fantastic job including removal of wallpapers, skimming and repainting walls and ceilings in no time.... the team worked wonders day and night handing back the property ahead of our move in day!! Andi is easy to talk to, extremely hardworking, keeps his promise and does it all with a smile! I wish I was like that at work when my boss gives me job :) Very pleased we hired Andi
CT plumbing
Rating: 5 out of 5
Loft Conversion Company in Keston
We are a trusted and professional plumbing company dedicated to delivering high-quality services for residential and commercial customers. With a strong focus on reliability, efficiency, and customer satisfaction, we handle everything from routine maintenance and repairs to full system installations. Our experienced and fully qualified plumbers are equipped to tackle a wide range of issues, including leaks, blocked drains, pipe replacements, boiler services, and emergency callouts. We use modern tools and proven techniques to ensure every job is completed to the highest standard. At the heart of our business is a commitment to honest pricing, clear communication, and dependable service you can rely on. Whether it’s a small repair or a large project, we aim to provide solutions that are both effective and long-lasting.
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Latest review:
I recently had some plumbing and decorating work carried out by CT Plumbing, and I’m really pleased with the results. The work was completed to a high standard, and everything was done efficiently and professionally. They were reliable, kept everything tidy, and clearly take pride in what they do. Communication was great throughout, and the finished work looks excellent. I wouldn’t hesitate to recommend CT Plumbing and would definitely use them again in the future.

Top rated Loft Conversion Companies

Our Loft Conversion Companies in Keston, are rated 5 out of 5 based on 9 reviews from customers like you.

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What services are offered by loft conversion companies in Keston?

Converting a loft often entails many jobs - some of which you likely haven’t even considered! Fortunately, a professional loft conversion company in Keston 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 Keston 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 Keston

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 Keston loft conversion company.

Find a loft conversion company in Keston 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 Keston.

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 Keston can view your job and register their interest.

Step 2: Review and compare Keston 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 Keston 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 Keston 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 Keston

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 Keston?

A local loft conversion company in Keston 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 Keston 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 Keston 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 Keston

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 Keston before agreeing to start the work.

Do I need planning permission for a loft conversion in Keston?

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 Keston 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 Keston loft conversion companies offer strategies to minimise disruption, but in complex projects, temporary relocation may be advisable.