Extension Builders in Alton

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.7 (10 reviews)

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Some of our top rated extension builders in Alton

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CG Brickwork
Rating: 5 out of 5
Extension Builder in Alton
CG brickwork Ltd are a leading bricklaying subcontractor with in the south east of England with a trusted reputation within the construction industry for combining a wide range of experience in various construction methods and producing genuinely high quality work which is, delivered on time and on budget. At CG brickwork we pride ourselves on our commitment to providing professional services at all times, whilst maintaining the highest quality of work.
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Latest review:
Extensions- 6 Oct 2018
This was a difficult job and it was completed really well, we are happy with the result 😊
Selected Refurbishments Limited
No reviews yet
Extension Builder in Alton
We deliver a wide range of building services in throughout the South East, for both domestic and commercial clients. Our areas of expertise range from Refurbishments, Redesigning Office Spaces to Multi-Storey Extensions. Our aim is to deliver quality residential & commercial refurbishment and construction services throughout the South East and nationally. From minor repair works, full multi-storey refurbishment projects, to landlord solutions and more!
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J S Plumbing and Heating
No reviews yet
Extension Builder in Alton
At J S Plumbing and Heating, we provide reliable, high-quality plumbing and heating solutions for homes and businesses. With years of experience and a commitment to excellent customer service, we handle everything from small repairs to complete system installations – efficiently and affordably. Whether you’re dealing with a dripping tap, no hot water, or planning a full heating upgrade, our certified engineers deliver fast, tide, and lasting results. We work with top brands and follow the highest safety standards to ensure your comfort all year round
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JAB Plastering & Building Services
No reviews yet
Extension Builder in Alton
Specialists in garage conversions & all aspects of plastering
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KCK builders
Rating: 5 out of 5
Extension Builder in Alton
We are a small, friendly company based in Basingstoke, Hampshire.We provide a vast range of services, everything from bathroom and kitchen refurbishments up to plumbing, electrical work and interior .
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Latest review:
Extensions- 25 Oct 2019
Krystian and his team did an excellent job for us on the new extension new bathroom and new Kitchen . They arrived on the day we agreed and got on with the work right away and the price we paid was the price quoted before the work begun .They were very professional hard working and payed excellent attention to detail.The finish was excellent and he and his team left the house clean and tidy after they were done.we are already recommending Krystian to friends and family that need work doing on their house Thank you Krystian for everything, we will definitely be back for other jobs.
3C cunningham construction
Rating: 5 out of 5
Extension Builder in Alton
Hi I'm Denis a professional carpenter able to take on loft conversion, extension & garden design. I work with a small team of colleagues where we can take on jobs from start to finish with no time away until the job is completed. We work to an achievable time scale with a high quality of workmanship.
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Latest review:
Carpentry- 18 Aug 2025
Dennis gave a good quote, answered any questions I had, was understanding when the door was delivered damaged and had to put the job back a week. He arrived on time, he was clean and tidy in his work and made easy work of fitting our wheelchair access bathroom door (3ft wide). We are very happy with the finished result and will definitely go back to him if we need a carpenter in the future.
Imperial Building & Landscapes Ltd
Rating: 5 out of 5
Extension Builder in Alton
Imperial are a building and landscaping solutions company offering a one stop shop for all building works. We have over 50 years combined experience between my business partner Chris and myself. As you would expect we are also a Trading Standards Approved company and Local Authority approved Contractor. Both Chris and myself would be fully involved with every project from start to finish along with our multi disciplinary team everyday until the project completion.
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Latest review:
Extensions- 27 Aug 2020
Colin, Keith and the team where brilliant and our new porch is fantastic giving us the extra room we need. I would definately use them again if reqiured. Thanks guys
ELITE DEVELOPMENTS LLD LTD
Rating: 5 out of 5
Extension Builder in Alton
At Elite Developments, we're more than just builders – we're dream enablers. With a passion for craftsmanship and a commitment to excellence, we specialize in bringing your vision to life, one project at a time. Whether it's constructing your dream home, renovating a cherished space, or enhancing your property's value, our team of experienced professionals is dedicated to delivering exceptional results. From concept to completion, we prioritize communication, integrity, and superior workmanship, ensuring that every project exceeds your expectations. With Elite Developments, your dream build becomes a reality
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Latest review:
The team from Elite Developments did an excellent job from start to finish. Stripping old tiles, battens and felt and the re-roofing with breather membrane, new battens and tiles including leadwork and rebuilding of chimney. Great workmanship and managed to keep the water out even in some horrendous weather.
Buildana Building Solutions Ltd
Rating: 5 out of 5
Extension Builder in Alton
Here at Buildana Building Solutions we pride ourselves on providing reliable, excellent quality and competitively priced building services for your project. Our priority is to ensure complete customer satisfaction from our work and project managed from start to finish with us. We are a very dedicated team who always put our customers first. We undertake All aspects of plastering. Extensions. New builds. Full house refurbishment. Garage conversions. Driveways. Landscaping. Kitchens. Bathrooms.
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Latest review:
Extensions- 13 Feb 2022
Nick and his team did a brilliant job removing a wall, replastering a wall/ceiling and adding coving/skirting to make it look like it had always been like that. Nick went the extra mile when we came across a couple of unforeseen issues. The place was left clean and tidy each day (which was most appreciated). Great communication before/during the job. Highly recommended.
Stark Home Developments
Rating: 5 out of 5
Extension Builder 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!
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Latest review:
Handyman- 28 Jul 2023
Ben did a great job, very fast and efficient
Belle partnership (Construction) ltd
Rating: 5 out of 5
Extension Builder 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.
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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.
MBV Building
Rating: 5 out of 5
Extension Builder in Alton
Hi My building experience spans 30 years as a bricklayer & groundworker. I have taken many projects from start to finish involving all the other required trades to produce a quality dream realised for the client whose satisfaction is to me paramount.
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Latest review:
Bricklaying- 7 May 2019
First class service ! Mark responded swiftly and professionally job was booked in for the following day which is what I needed. Prompt, happy and a can do attitude. Nothing was to much trouble. Planning next job already. Great workmanship. Highly recommend.. Invite with confidence.
MGC (SOUTHERN) LIMITED
Rating: 5 out of 5
Extension Builder 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.
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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
Extension Builder 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.
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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!
ADBrickwork
Rating: 5 out of 5
Extension Builder in Alton
Here at ADBrickwork we take on everything brickwork Including extensions, garden walls, repointing garage conversions & restructural work. We Also take on Patios, fencing & turfing All our work is carried out to a high standard
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R contractors & services Ltd
Rating: 5 out of 5
Extension Builder in Alton
Hi There, If you’re looking for your perfect contractors then look no further. We aim for nothing more than the best customer satisfaction possible. Insuring the projects run smoothly with as little impact on the day to day life of the clients. We do this by working as efficiently as we can by managing all stages of the project and planning ahead. We want our clients to enjoy the process of building their dream home. Please contact anytime for bookings or advice Thank you
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Latest review:
Great company highly recommend, Charlie and the team worked on our rental property in Didcot, was recommended by friends. Would use again!

4.7

Top rated Extension Builders

Our Extension Builders in Alton, are rated 4.7 out of 5 based on 10 reviews from customers like you.

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What types of services are offered by local extension builders in Alton?

Building an extension is a major milestone for any home. It’s not just about adding extra space, it’s a big step that can transform how you live day to day, opening up new possibilities for comfort, lifestyle, and family needs.

This is why it’s so important to find the right extension builders in Alton for you. They can help with a variety of tasks and projects, including:

Extending your home with an extra room
Two+ storey extensions
Adding partition walls to create more rooms
Building annexes or external structures

To find the right extension builder near you, simply post your job on MyBuilder. Explain the type of help you’re looking for, and then home extension builders in Alton who are available and interested can respond to your post.

Browse profiles, read customer reviews and get quotes from your chosen Alton extension builders, all before you decide who to hire.

What are the hourly rates of extension builders in Alton?

Before getting started with your extension project, it’s important to have a clear budget in place. On average, extension builders in Alton will charge between £16 and £42 per hour.

Single-storey rear extensions cost between £20,000 and £60,000 depending on size and finish.
The cost of double-storey extensions, which add more space and value, can range from £100,000 to over £170,000.
Larger wrap-around extensions that combine multiple extension types can range from £40,000 to over £120,000.

The cost of an extension will vary depending on your property. For instance, extending in certain areas may require structural adjustments to ensure stability, which can increase your material and labour costs.

To get an accurate price for your home extension, request detailed quotes from several Alton extension builders near you on MyBuilder. This allows you to compare what each quote covers and how much your Alton home extension project is likely to cost.

Find extension builders in Alton with MyBuilder

Hiring the right extension builder in Alton with MyBuilder couldn’t be easier. Just follow these simple steps:

Step 1: Post your extension project on MyBuilder

Whether you’re planning a single-storey extension, a loft conversion, or adding a new room, post your job on MyBuilder to find local Alton extension builders. Once your job is live, we’ll share it with home extension builders in Alton who can express their interest.

Step 2: Compare different extension builders in Alton

When you start receiving interest, review profiles of local Alton extension builders, check their previous work, and read real customer reviews. Ask about timelines, materials, and request detailed quotes.

Step 3: Hire Alton extension builders with confidence

After gathering all the information and quotes from your chosen home extension builders in Alton, compare their experience, guarantees, and costs before choosing who to hire.

You’ll also have confidence knowing that every tradesperson on MyBuilder is verified through several checks, including:

ID verification: When a tradesperson joins MyBuilder, we ask for a valid ID, such as a passport, ID card, or eIDAS certificate.
Company verification: For tradespeople operating under a company, we make sure every tradesperson has a registered business.

Did you know? Our continuous monitoring and complaints process ensures that tradespeople who don’t meet our standards are promptly removed from MyBuilder’s platform.

Alton extension builders are ready to help. Use MyBuilder today to find the right professional for your home extension.

What to ask a Alton extension builder before hiring?

Before hiring an extension builder in Alton or extension building company in Alton, ask a few key questions to make sure you’re choosing the right professional for your home extension project.

What qualifications and experience do you have as an extension builder in Alton?

An extension builder in Alton should have a strong track record with similar projects and relevant building qualifications or trade memberships, such as the Federation of Master Builders (FMB) or TrustMark.

Will my home extension meet all building regulations and planning requirements?

Your Alton extension builder should ensure the project complies with Building Regulations and, where necessary, handle or assist with planning permissions. Ask how they manage building control inspections and what documentation you’ll receive once the project is complete.

What experience do you have with similar extensions in Alton?

Ask to see examples of their previous work, or view examples of their work on MyBuilder. Ideally projects similar to yours in scale and design. This helps you assess the Alton extension builder’s ability to deliver a result that meets your expectations.

How long will the extension take to complete?

Extension project timelines can vary depending on size, complexity, and weather. A typical single-storey extension might take around 8 - 12 weeks. Request a detailed schedule so you know what to expect and when key milestones will be reached.

Do you offer a guarantee for your work? Most Alton extension builders offer a guarantee or warranty on their work, often between 1 and 10 years depending on the project and materials used. This gives you assurance that any issues will be resolved after completion.

If you still have questions about the professional you are looking to hire, we have a full detailed guide on hiring the right builder here.

FAQ: Common questions about home extensions in Alton

Can an extension builder in Alton help with planning permission?

Yes, many extension builders in Alton can guide you through the planning process. They can help prepare drawings, advise on local requirements, and liaise with your local council to ensure your project meets all necessary regulations.

Can an extension builder in Alton handle everything from design to construction?

Many Alton extension builders offer full design-and-build services, managing both the architectural planning and construction stages. Ask your builder whether they can provide a complete package or if you’ll need to hire an architect or designer separately.

Will an extension builder in Alton help with materials and finishes?

Yes, most extension builders in Alton can source materials and offer advice on finishes that suit your design and budget. You can also choose to supply certain materials yourself, just make sure this is agreed upon before work starts.