Loft conversion companies in Alton

Name: Loft Conversion Company
Brand: MyBuilder
SKU: loft-conversion-company
Rating: 5 (1 reviews)

Easily find verified Alton Loft Conversion Companies. Just post your job to get quotes from MyBuilder's Loft Conversion Companies in Alton.

Select a service

How it works

Post your job for free

Tell us about your job, and we’ll alert suitable tradespeople in your area. It’s simple and free.

Tradespeople respond

Once your job is posted, you’ll get responses from interested tradespeople through the website.

Review profiles and choose

Browse profiles, work history, and feedback, then choose who you wish to share your details with.

Some of our top rated loft conversion companies in Alton

164 Results

Sort by:

Stark Home Developments
Rating: 5 out of 5
Loft Conversion Company in Alton
Hi, we're Ben and Joe From Stark Home Developments. Over 10 years multi trade experience and 12 years electrical experience. Friendly and reliable No job too big or small. Carpentry work, general building & home improvements, electrical, loft conversions, garage conversions, extensions, there’s literally nothing we cant do for you!
Get in touch
Latest review:
Handyman- 28 Jul 2023
Ben did a great job, very fast and efficient
MGC (SOUTHERN) LIMITED
Rating: 5 out of 5
Loft Conversion Company in Alton
My name is Matt Carpenter I run GFD Construction ltd We have been working in in the construction industry for 20 years and based in the south of Hampshire, we offer the complete building package from design service to groundworks new builds loft conversions and so on... We offer you as a customer a very professional high end service which is stress and hassle free to achieve your perfect home.
Get in touch
Latest review:
Extensions- 12 Jun 2020
Matt, Rob and the team have been absolutely brilliant in managing and building our extension. There were a lot of challenges around the build to manage; we had awful December weather with rain every day but the team worked weekends to keep to schedule, and there were issues with the structural engineers plans and the kitchen designers - not to mention the arrival of lockdown, but they dealt with every issue brilliantly and positively. The team are a pleasure to have around the house, and Rob found a solution every time we had a challenge. The work is of a very high standard - we are amazed how well they have matched the exterior and they offered good advice for us on how to make the most of interior space as well as being very collaborative in finding ways to be as efficient with the budget as possible. This was not a huge external build but it was very complex inside as we were reconfiguring rooms & knocking through rooms, and the team managed a complicated process expertly. I highly recommend the Groundforce team to anyone looking at residential building work. They have been first class.
Balaz Enterprise Global Ltd
Rating: 5 out of 5
Loft Conversion Company in Alton
Balaz Enterprise Global is a premium home improvement and property refurbishment company based in Basingstoke, Hampshire. We serve homeowners, landlords, and property developers across Hampshire, Berkshire, and London, delivering high-quality results on every project — from single-room renovations to full property transformations. Our services include driveways and block paving, resin bound driveways, landscaping and garden design, brickwork and masonry, extensions and loft conversions, kitchen and bathroom fitting, plastering and rendering, flooring, painting and decorating, and full property refurbishments. Whether you need a front yard completely redesigned, a driveway laid, a bathroom stripped and rebuilt, or an entire house refreshed inside and out, we have the skills and experience to deliver. We are a registered company (Companies House No. 16373292) with over 10 years of hands-on experience in the trade. Every job is carried out to the highest standard — no shortcuts, no mess left behind, and no substandard materials. We take pride in our work and treat every property as if it were our own. We offer free, no-obligation quotes for all projects. Our team is fully insured, reliable, and committed to clear communication from the first call to the final clean-up. We work around your schedule and keep you informed at every stage. 📍 Based in Basingstoke — covering Basingstoke, Winchester, Southampton, Andover, Newbury, Reading, and Greater London.
Get in touch
Latest review:
I hired this company for multiple projects around my house, including a downstairs toilet, upstairs bathroom, hallways, media walls, and spotlights. I’m extremely happy with the quality of work and the overall service. I kept bringing them back for more jobs, which says it all. They were reliable, professional, and easy to communicate with throughout. Everything was completed to a very high standard and on time. Highly recommended — I would definitely use them again!
Belle partnership (Construction) ltd
Rating: 5 out of 5
Loft Conversion Company in Alton
We are a building and renovation company delivering high-quality residential and commercial projects with a focus on reliability, workmanship, and clear communication. Based in Magor, Wales and Farnborough serving London and the south of England and Wales. We have proven experience delivering housing association projects like HMO refurbishments, kitchen and bathroom contracts, and maintenance works. On the residential side, we carry out new builds, loft conversions, and extensions tailored to our clients’ needs. Clients including Stonewater, Guildford Council.
Get in touch
Latest review:
We hired Belle Partnership for a two storey extension and remodel of our home. The project included structural work (knocking through and installing steel beams), building the extension shell, roofing, new windows and doors, first and second fix electrics, plumbing and plastering. Communication was clear and professional from the start with any variations - either at our request or where small snags were encountered, which was inevitable on a project of this size - discussed and priced transparently before work proceeded which helped us keep control of the budget. The team were punctual and generally kept to the agreed programme. There were a few delays due to material lead times and weather, but these were communicated in advance and didn’t feel avoidable. We were kept informed of progress throughout, which made the process less stressful. Tidiness on site was good with the team keeping the working areas as organised as possible and cleared away debris regularly. We're very happy with the workmanship, the work being finished to a high standard. This was a significant undertaking for us and Belle Partnership helped us achieve what we wanted. Chris and his team were professional, approachable, and capable of delivering a substantial extension and remodel to a good standard. I don't think any project of this scale is entirely without minor issues but we felt they dealt with challenges responsibly and delivered what was agreed. We would recommend them to other homeowners considering a similar project.
Gen-3 Carpentry & Construction
Rating: 5 out of 5
Loft Conversion Company in Alton
We are a family based team and undertake many jobs ranging from extensions to renovations, specialists in oak frames and cut roofs. Kitchen installations bespoke cupboards and wardrobes. If you can imagine it we can build it.
Get in touch
Latest review:
Extensions- 19 Apr 2024
We greatly appreciate the professionalism and quality of workmanship by Ian and the build team over the Winter in completion of our extention. The team worked hard to make sure there was minimal disruption to the lives of my elderly parents during the build and showed flexibility in additional out of scope carpentry and steelworks. We are completely delighted with the overall vaulted ceiling ensuite room extensions.
Belle Sol Solutions
Rating: 5 out of 5
Loft Conversion Company in Alton
At Belle Sol Solutions, we are a dedicated construction repair company driven by a passion for precision and a commitment to excellence. With a focus on personalized service, we specialize in efficiently addressing a range of repair needs, from minor fixes to intricate restorations. Our skilled team brings a wealth of expertise to every project, ensuring that each repair is executed with meticulous attention to detail.
Get in touch
Latest review:
Renovation of a two bed dewling workmanship was fantastic kept me in the loop with every aspect of the job stuck to program,very reliable on time.and very professional. Highly recommended
Sinclair Carpentry
No reviews yet
Loft Conversion Company in Alton
I am a level 3 qualified Carpenter, and I have 15 years of experience in all aspects of carpentry. I have been lucky enough the past few years working on highspec mansion builds in Surrey and surrounding areas. I am conscientious,reliable and a clean worker. I aim to provide the highest level of skilled carpentry and joinery work combined with an excellent, personal service.
Get in touch
Bob hamblin carpentry services
Rating: 5 out of 5
Loft Conversion Company in Alton
1st and 2nd fix carpentry from roofs to kitchens and everything in between
Get in touch
Latest review:
Carpentry- 15 Feb 2022
We received a prompt response and fantastic workmanship. Couldn’t recommend him highly enough!
dg carpentry
Rating: 5 out of 5
Loft Conversion Company in Alton
Tidy and reliable carpenter with 9+ years in the trade covering all aspects of timber and UPVC. Bespoke wooden window/door replacements and repairs specialist, bespoke furniture and lots more. No job too small.
Get in touch
Latest review:
Windows & Doors (Wooden)- 21 Jan 2023
Dylan was fantastic and got the job done on time and for a great price. He couldn’t be more helpful. He’s certainly on my list for future jobs.
A S Parratt Builders LTD
Rating: 5 out of 5
Loft Conversion Company in Alton
We are a small family run business that has been established for over 40 years; we aim to provide the best possible service in a cost effective manner to maintain and ensure customer satisfaction. Working throughout Surrey & Hampshire, we provide everything from minor repairs to complete extensions.
Get in touch
Latest review:
Andy built a large single story extension at the back of our house in 2013. It is a contemporary design with two sets of large bi-fold doors, two roof lights with a modern rubber roof and zinc fascia. The work included laying a new patio and tiling inside also. A number of internal walls had to be removed so quite a complex job. This is the fourth project that Andy has completed on our house - prior works were bedroom and office extensions, wall removal in kitchen and exterior retaining wall. I have always been delighted with Andy's work hence using him for all of our projects on this house. He is very skilled, sets very high standards for both himself and any trades he brings in, has an amazing work ethic and is a builder that you can trust. I am more than happy to be a reference for Andy.
WH Carpentry
Rating: 4.4 out of 5
Loft Conversion Company in Alton
hi there we are a small company based in Basingstoke we've taken on a couple new members we now cover carpentry , Venetian plaster/textured walls,painting and decorating , tiling and much more . We cover fully fitted kitchens ,bathrooms and most building work , their isn't much we don't do . Always look forward to meeting new clients and building a relationship where you will call us back for future projects. Look forward to be hearing from you .
Get in touch
Latest review:
Tiling- 20 May 2022
Very good. Only a small amount of tiling but Warren arrived when he said and did the job very well. Happy to recommend WH Carpentry.
Hammer Home Improvements
Rating: 4.9 out of 5
Loft Conversion Company in Alton
Hello and thank you for viewing my profile. We are Hammer home improvements based in Basingstoke with over 15 years of carpentry, roofing, general building and maintenance experience. We take on all jobs in and around your home such as loft and garage conversions, all types of roof extensions including pitch and flat roofs, house renovations and roof maintenance, landscaping and decking. All jobs big and small. Free no hassle quotes. Fully insured.
Get in touch
Latest review:
Carpentry- 10 May 2019
Chris went out of his way to make sure everything was as I would like. Both I and my husband were delighted with his work. Everything was left tidily at the end of each visit. We would happily use him again. Thank you
Frontline loft rooms Ltd
Rating: 5 out of 5
Loft Conversion Company in Alton
Welcome to Frontline loft rooms Ltd, We specialize in loft and garage conversions. Frontline loft rooms is a family run business with 20 + years experience. We provide high standards of work and a professional approach.
Get in touch
Latest review:
Loft Conversion- 21 Oct 2022
Iain was very helpful and I am very pleased with the work carried out on our conversion. I will definitely be in touch again if more works are needed.
My Carpenter
Rating: 5 out of 5
Loft Conversion Company in Alton
MY Carpenter & Loft conversions A local carpentry company specialising in loft conversions and domestic renovation work A bespoke service tailored to your requirements, preliminary sketches prior to any fee's. We take pride in our work, we are a reputable and reliable service that you can trust. Get in touch with MY CARPENTER LTD
Get in touch
Latest review:
Loft Conversion- 12 Aug 2022
My Carpenter provided professional services in all aspects during the whole project life cycle, including quoting, planning, construction, on-site variation control, commissioning and handover. It was a fantastic experience working with the on-site project manager, Mitchell Bligh, who provided site management, advices and reported daily the project progress to me. Good communication and take care of client's concerns are the keys of success. The project completed in accordance with the agreed time plan, cost and with great quality. I would recommend My Carpenter to others with the similar construction requests.
Patryk
Rating: 5 out of 5
Loft Conversion Company in Alton
Professional and communicative, always examine all jobs and learn everything to be prepared for everything. I'm not quite good in describing myself, but all my job would say a lot about my professionalism.
Get in touch
Latest review:
Carpentry- 7 Mar 2026
Patryk fitted a new hatch and ladder and boarded our loft. He was brilliant and resourceful, making everything work around our old property layout. Other companies who had quoted before tried to make things a lot more complicated than necessary. We'd highly recommend him to all.
Alliance Carpentry
Rating: 5 out of 5
Loft Conversion Company in Alton
Alliance Carpentry are passionate about all things Carpentry. With many years experience in the industry you can be sure you’ve come to the right place. We pride ourselves on our customer service, punctuality, and job standard execution. We are fully transparent and communicate with our customers on everything, from start to finish, giving you that peace of mind knowing you have the right team in completing your works. Get in touch today to see how we can make your dream a reality!
Get in touch
Latest review:
Carpentry- 19 Aug 2024
Professional, diligent and friendly whils carrying out the job. Really happy with the final outcome. Would recommend and would use again.

Top rated Loft Conversion Companies

Our Loft Conversion Companies in Alton, are rated 5 out of 5 based on 1 review from customers like you.

Quality screening

Easily find verified local tradespeople. Just post your job to get quotes from tradespeople near you across the UK.

What services are offered by loft conversion companies in Alton?

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

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 Alton loft conversion company.

Find a loft conversion company in Alton 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 Alton.

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 Alton can view your job and register their interest.

Step 2: Review and compare Alton 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 Alton 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 Alton 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 Alton

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 Alton?

A local loft conversion company in Alton 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 Alton 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 Alton 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 Alton

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 Alton before agreeing to start the work.

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

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