Extension Builders in Alton

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.4 (11 reviews)

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Some of our top rated extension builders in Alton

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Hampshire Carpentry & Kitchens
Rating: 5 out of 5
Extension Builder in Alton
We can offer a full turn key finished build or renovation project we deal with all types of extensions /garden rooms and home offices I’ve been building and fitting for 15 years. All aspects of kitchen fitting taken on from removal to new kitchen , all work carried out by our team of fully qualified trades
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Latest review:
Carpentry- 28 Jan 2026
Simon went over and above to complete this for us. His flexibility and customer care very much appreciated
Forsyth Construction
Rating: 5 out of 5
Extension Builder in Alton
Forsyth Construction Surrey is owned and run by Mal Middleton - we build beautiful homes. From building an extension to creating a beautiful new bathroom, we can provide a full design and build service. Very experienced in both traditional construction and Sips systems. From initial concept through to final sign off from building control, we provide a stress free project management service at a fair price.
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Latest review:
Extensions- 7 Mar 2021
This was a small but complex extension. Mal and his team are skilled and experienced. They did an excellent job.
Bogue Construction
Rating: 5 out of 5
Extension Builder in Alton
At Bogue Construction our goal is not only to help design and build your new home but to make the process easy and enjoyable for you. We can help with all phases of your project from planning to completion. We are confident that you wont be disappointed choosing us for your project.
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Latest review:
Extensions- 9 Jul 2025
Patrick is polite, punctual, courteous and very hard working. He works to a very high standard and is skilled and very experienced in constructing house extensions. We are so pleased with how our conservatory conversion to a single-storey extension is progressing. We are so looking forward to the finished product. Thank you so much Patrick. We would highly recommend Bogue Construction.
RM UK RENOVATIONS LTD
Rating: 5 out of 5
Extension Builder in Alton
17 years experience in extensions and house renovations also we are fully trained to install EPDM flat roof systems with 35 years warranty. We are based in Hampshire and cover the Surrey borders. We are pleased to offer full range of services from a wall in your garden to the tiles on your roof with a professional, competitive, and reliable service. Fully insured with public liability.
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Latest review:
Extensions- 12 Oct 2018
We would highly recommend Robert for all your building works. Robert and his team completed a two story extension across two properties and replaced an existing roof. Robert was very easy to communicate with, he turned up as promised and was very flexible with his original quote. The work was completed on time and to the original budget agreed from day one, despite some challenges along the way. The work is of a good standard and was approved easily by building control inspector at every stage. We are looking forward to working with Robert and his team on the next project.
AJS Property Solutions
Rating: 5 out of 5
Extension Builder in Alton
General building, property maintenance, groundworks, roofing and more.
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Latest review:
New kitchen fitted with units and design by Wren. Unfortunately the plan and the units supplied had a number of issues, and Mr. Searle was very knowledgeable, helpful and professional in helping resolve them and helping us to communicate with Wren! He was thorough, quick, clean and friendly at all times and kept us well informed and updated. He has also advised us on, and undertook a few other jobs that had been waiting to be done for some time. Nothing was too much trouble. We would highly recommend him to anyone needing work done.
BX developments
Rating: 5 out of 5
Extension Builder in Alton
Hi! I’m Nick, a kitchen installation specialist with over 15 years of experience in transforming spaces into functional kitchens. My passion for design drives my commitment to quality and attention to detail. Expertise I specialize in: • Custom Installations: Tailored solutions for homeowners and designers. • Cabinetry and Countertops: Installing a variety of cabinetry and fixtures. • Layout Optimization: Enhancing kitchen space for better usability. I believe the kitchen is the heart of the home. My goal is to make installations seamless from design to completion. Services Offered • Consultation: Understanding client visions and requirements. • Installation: Professional installation of all kitchen components. • Renovation Support: Ensuring beauty and functionality in renovations.
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Latest review:
Kitchen Fitting- 27 Jun 2026
Very polite, friendly. Came and got on with the job, no hassle. Much appreciated
Jeff Hardy General Builder
Rating: 5 out of 5
Extension Builder in Alton
I am a builder who has been working in the building trade since 1989 and have run my own company since 2005. I am a confident builder who takes pride in his work and I am very tidy! I do most parts of building eg extension, brickwork, re-pointing,block paving and hard landscaping etc.
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Latest review:
Extensions- 5 Feb 2025
Review for Jeff Hardy Builder We couldn’t be happier with the work Jeff Hardy did in building our yoga studio. His commitment to outstanding quality was evident in every aspect of the project. Jeff worked tirelessly, ensuring every detail was completed to the highest standard. His dedication and professionalism meant the job was finished efficiently, and he left the site spotless. It’s rare to find a builder so reliable, skilled, and trustworthy—Jeff is certainly someone you can count on. Highly recommended! Thank you Jeff!!
Jude Pelham
Rating: 5 out of 5
Extension Builder in Alton
I'm a bricklayer with 20+years experience . I can build new builds or little extensions and garden walls etc patios, driveways, garden renovations, brick repairs , pointing and anything else to do with bricks
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Latest review:
Bricklaying- 14 Jun 2023
Jude completed building two brick pillars and adding screenwall for updating an old porch. Good job done and very positive attitude.
Sds building and landscaping
Rating: 5 out of 5
Extension Builder in Alton
I am a general builder with almost 20 years of experience in the trade .I have a great team of trades witch work along side me, which means I can look after your project from start to finish. thanks for looking at my profile Scott
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Latest review:
Conversions - General- 13 Apr 2021
Very good job and a fair price ,will use again. Very helpful with a ceiling problem all sorted. Well done.
McDonald's building services
Rating: 5 out of 5
Extension Builder in Alton
Bricklaying Is my trade but I've been in the construction industry for nearly 20 years. I take great pride in my work and in customers satisfaction. My services are. New builds Extension Structural alterations Hard/ soft landscaping Groundworks All aspects of brickwork
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Latest review:
Extensions- 29 Sep 2021
An amazing result, very reasonably priced and professional service. We are really thrilled with the extension, Dave was able to answer any questions and adapt our specifications at a moments notice. He had been patient and friendly throughout and I have to say the work itself is exceptional. We sent pictures to family who are in the trade in London and the boss asked if Dave wants to do some work in London! If you are looking for a builder, I can't see why you'd go anywhere else. Thanks again Dave and Harvey
JPB
Rating: 4.7 out of 5
Extension Builder in Alton
Business running for 8 years Worked in trade for 10 years + Comprehensive knowledge and modern design Specialists in bathrooms & Kitchens Can do the complete job start to finish with full designs and designer
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Latest review:
Carpentry- 23 Feb 2025
Great work, arrive on time, prepared and ready to work. Would definitely use him again
Daly Improvements
Rating: 4 out of 5
Extension Builder in Alton
Carpentry and building company, run by a small team of professional qualified tradesman. We undertake all aspects of carpentry and building works. From kitchen remodelling, bespoke fitted wardrobes, windows and door replacements. Along with other aspects of carpentry and joinery. We also undertake extensions to loft conversions and garage conversions. We look to ensure every client gets exactly what they want and deserve. With our friendly professional high quality and attention to detail. Please check out our Facebook page Daly improvements
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Latest review:
Carpentry- 16 Sep 2025
The care taken on the Job was impressive. I would use them again and hope to do so in the future.
Vinna Design & Build Ltd
No reviews yet
Extension Builder in Alton
We're Vinna Design & Build Ltd, a design and build company based in Alton, Hampshire, serving homeowners and design professionals across Hampshire, Surrey and Berkshire. We handle everything from single-storey extensions and full home refurbishments through to larger new build and fit-out projects. What sets us apart is simple: we run every project with the structure and professionalism of a large contractor, and the personal attention only a dedicated team can provide. Ben Attfield leads every project personally. You'll always know who to call, where your money is going, and what happens next. No surprises, no hidden costs, just honest, skilled work delivered to a high standard. We're currently on site in Alton on a rear extension and refurbishment project, and we're actively taking on new work for 2026. If you have a project in mind, get in touch — we're happy to talk through it before you commit to anything. What we do: Extensions (single-storey, double-storey, side returns) | Full home refurbishments | Kitchens & bathrooms | Loft conversions | New builds | Fit-out & finishing works | Design & build packages
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Proeffect
Rating: 5 out of 5
Extension Builder in Alton
We are a multi-skilled team with experience of 15 years now and have been involved in many inside & outside work for people. From small to large jobs such as :painting & decorating, tiling, fitting in bathroom, carpentry, kitchens etc...because every job is important to us .We have Liability insurance and can provide many references if required.
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Latest review:
Painting & Decorating- 1 Jun 2026
I found Phillip to be very hard working always turning up on time and completing the job. I plan to use Phillip again throughout the year at properties we own in Berkshire & Hampshire.
Jenkins Construction
Rating: 5 out of 5
Extension Builder in Alton
With almost 25 years in the industry Jenkins Construction offers a complete building and landscaping service to suit every customers needs from extensions, renovations,kitchens, bathrooms and garage conversions to complete garden remodles. we are a fully qualified and fully insured team who treats every job like it was our own home. We pride ourselves on our workmanship,reliability, cleanliness and freindly attitudes
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Latest review:
Polite, flexible and talented. Gary was a joy to have around and helped create a fantastic tree house for our family. I couldn't recommend his services enough. thank you Gary!
Mt property services
Rating: 4 out of 5
Extension Builder in Alton
We are a family run business trading for the last 25 years we pride ourselves on good work great time keeping and being friendly to deal with! We specialise in Plastering Brick work Block work Painting and decorating Ground work Driveways K render Colour render
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Latest review:
Plastering- 12 Jan 2026
Very pleased with the finished ceilings. Brett was easy to correspond with. He arrived promptly and completed the job quickly and exactly as required. Very clean and tidy too

4.4

Top rated Extension Builders

Our Extension Builders in Alton, are rated 4.4 out of 5 based on 11 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.