Extension builders in Guildford

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.7 (15 reviews)

Easily find verified Guildford Extension Builders. Just post your job to get quotes from MyBuilder's Extension Builders in Guildford.

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 extension builders in Guildford

1321 Results

Sort by:

Andy king
Rating: 5 out of 5
Extension Builder in Guildford
Edit Homes is a small Surrey based building company. We pride ourselves on a neat and tidy service, delivering any size project on time and on budget. Offering a transparent pricing policy for simplicity and control. I offer full analysis on all aspects for design and build services to complete all projects. Andy king (Edit homes ltd)
Get in touch
Latest review:
Extensions- 26 Jun 2018
Andy and his team came to build my single story extension. Could not recommend him highly enough for his high quality work and finished product. Finished all the work to the time scale he told me and turned up everyday from start to finish. Always communicated with me to understand what was going on with each stage and went above and beyond to help me. Very clean and tidy. I still have lots of work to do with a garage conversion for one, and will not hesitate to use Andy again. Brilliant. 10/10
Mushroom Building Services
Rating: 5 out of 5
Extension Builder in Guildford
We are a small building company with over 30 years experience based in Farnham. We offer a full building service from start to finish. We complete all work to the highest standard, no exceptions. We’re fully insured and qualified.
Get in touch
Latest review:
Conversions - General- 29 Sep 2022
The job - gutting our living room. Tearing down the ceiling, removing all old wallpaper and ripping up the floor in order to insulate and add lighting. While we were doing this, we decided to replace the main steel in the living room (which was oversize and impacted the floor height in the guest room) and do remedial works in the guest room. The steel replacement was not time budgeted, but Oli and Tony didn’t hesitate to quote,To make time for us and bring in the structural engineer. Probably added 3 weeks to their time on site. The trades they brought in (plumbing for heating, electrician for downlighters, structural engineer and plasterers) were all professional, did an excellent job and were all unfailingly polite. It was easy to build a good, positive relationship with them, to the point we felt comfortable giving them the keys to the house so they could work while we went away for two weeks. They sent photos of their progress and showed up and worked as if we were there. I was very impressed by the state of the house when we got back. They watered our plants (I didn’t ask) and they cleaned the hallway so that it was spotless. They did a good job for a fair price, and were always cheerful and open to conversation. They came back to do a few snagging items without being chased (this is a huge thing for me, after having chased many builders to finish bits and pieces). I would definitely use them again.
Infinity Projects Group Ltd
Rating: 5 out of 5
Extension Builder in Guildford
Infinity Projects Group stands as a prestigious and award-winning construction consultancy, boasting a rich legacy of excellence in delivering top-tier Project Management, Construction Management, Design and Build, and Refurbishment Services since its establishment in 2016. As a privileged client of Infinity Projects Group, you are guaranteed a service that is meticulously tailored to meet the intricate demands and nuances of your project. All wall is certified, and coming with 1 year free of charge warranty. We don't cut the corners and our Plumber doesn't perform Electrical job ! Please look at our website . -Design and Build -Project Management -Principle contractor -New Build -Refurbishment -Loft Conversion -Garage conversion -Kitchen extension and refurbishment -Architecture drawings and permissions -Building control -Gas safe -Niciec Approved contractor
Get in touch
Latest review:
Electrical- 8 Apr 2021
Val was responsive and prompt, and performed EICR as needed.
Gary Howe Brickwork
Rating: 5 out of 5
Extension Builder in Guildford
I Have been a Bricklayer for 27 years and take great pride in the neat and tidy brickwork I produce. The last couple of years I have concentrated on smaller jobs. work undertaken Extensions New builds Maintenance Brickwork Blockwork Re pointing patios Garden work repairs shed bases Pressure washing Garages Structual alterations and repairs please check out our pics
Get in touch
Latest review:
Extensions- 26 Oct 2021
Amazing job on my new garage. Gary and his team are brilliant, polite, tidy very hard workers and nothing is to much trouble them.Gary went through everything from the beginning til the end, nearly finished. I would like to say a big thank you to them all and would have them back anytime Mary Goolding
ABD Builders and sons
No reviews yet
Extension Builder in Guildford
We are a family run construction company specialising in: Extensions New builds Loft conversions Renovations Landscaping Our area of speciality is ground works and brick work but we are experienced in all aspects of the trade. We have some highly skilled tradespeople that work for us, such as Carpenters, electricians, plumbers and plasterers. Even bespoke items can be made for just for you. We are based in Guildford and cover most of Surrey and out skirts of south London.
Get in touch
Craig
Rating: 5 out of 5
Extension Builder in Guildford
All Building work undertaken
Get in touch
Latest review:
Fascias & Soffits- 27 Oct 2021
Craig was very professional Tidy worker and did an excellent job. Will be using him again for other jobs we have coming up. Came back very quick with the quote and getting the job done
Harvey Macey
Rating: 4.9 out of 5
Extension Builder in Guildford
Hi there, I’m Harvey, I am a carpenter and general builder
Get in touch
Latest review:
Carpentry- 9 Oct 2026
Harvey removed/replaced skirting board throughout the whole downstairs of my house. He is very friendly and arrived on time to do the job. He was very tidy and did a great job on the skirting boards. Would definitely hire Harvey again- thank you!
blu kube building services
Rating: 5 out of 5
Extension Builder in Guildford
We have been running as a building company for over 20 years. We do all building works from extensions, to kitchen and bathroom installs , We also cover all electrical works from Rewires to changing light fittings and sockets and are part p and niceic registered we can test all works and issue certification . We also offer full plumbing works from installing new radiators or just changing a tap
Get in touch
Latest review:
Bathroom Fitting- 8 Jul 2026
Excellent bathroom work from Dan and Josh, Dan offered some good and practical suggestions and helped with the design. The work has been completed to every detail as expected , We are very pleased with the work and will definitely use them again for the next project.
Proeffect
Rating: 5 out of 5
Extension Builder in Guildford
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.
Get in touch
Latest review:
Painting & Decorating- 19 Oct 2026
Good chap, did a great job, the finish of the painting was very clean and professional. Quick turnaround as well and trustworthy, would highly reccomend.
Hgconstruction
No reviews yet
Extension Builder in Guildford
We are a reliable and hardworking construction company dedicated to delivering high-quality workmanship at competitive prices. We take pride in completing every project to the highest standard, whether it’s a small repair or a full renovation. We believe in honest communication, punctuality, and leaving every job clean and tidy. Customer satisfaction is our top priority, and we treat every home with the same care and respect as if it were our own. No job is too big or too small. We offer free, no-obligation quotes and are happy to provide advice to help you achieve the best results for your project. Choose us for reliable service, quality craftsmanship, and a finish you can be proud of.
Get in touch
Honest-Builds Limited
No reviews yet
Extension Builder in Guildford
We help homeowners create more space, more comfort, and more value in their homes. With extensive experience in extensions, loft conversions, driveways, and all types of renovation work, we deliver quality craftsmanship with a personal, reliable service from start to finish.
Get in touch
Floating Bricks
No reviews yet
Extension Builder in Guildford
Floating Bricks provides property refurbishment and renovation across West London & Surrey. We manage projects from initial scope through to completion, with one point of contact throughout. Our work includes full and partial refurbishments, kitchens and bathrooms, reconfiguration, structural works, plastering, decorating, flooring, plumbing, electrics and general property improvements. We work with homeowners, landlords, investors and property professionals, from individual room renovations through to full back-to-bricks refurbishments. Our approach is straightforward: clear scope, realistic pricing, reliable communication and properly coordinated trades. Where specialist input is required, we can also coordinate structural, planning and other professional support. Tell us about your project and we’ll be happy to discuss the best way forward.
Get in touch
JDN construction
Rating: 5 out of 5
Extension Builder in Guildford
JDN construction prides itself on offering their customers professional, reliable and friendly service. Guaranteeing high quality workmanship at affordable prices.
Get in touch
Latest review:
Extensions- 24 Sep 2025
Jack has been amazing from the very start to finish with our extension project. He explained everything every step of the way, was clear about pricing, agreed to do extra work for us too like our garden patio and fences. Nothing was ever a problem and we couldn’t be happier with our kitchen extension - would recommend Jack to anyone!
A Jones contractors
No reviews yet
Extension Builder in Guildford
We undertake all aspects of building and groundwork, we specialise in brickwork, driveways, patios and footings/foundations, we are fully qualified, vetted and Surrey trading standards approved
Get in touch
ConstrucTek LTD
Rating: 5 out of 5
Extension Builder in Guildford
We undertake all building work Extensions, Porcelain and Stone Patios, Loft Conversions to New Build Houses. We will visit your site and give you a fully itemised no obligation quotation. All our work is fully guaranteed and Insured. We are members of the Federation of Master Builders and also the government backed Trustmark Scheme. Look at our feedback. All feedback is for extensions which we primarily specialise in.
Get in touch
Latest review:
Extensions- 30 Jan 2020
We cannot thank Danny and Constructek enough for our beautiful extension. From his first visit to look at the project and quote through to the last this week to complete Danny and his team have been amazing. All of the trades people were so friendly and accommodating. Danny handled all of the tradespeople and deliveries for us, making the whole process such a job. The standard of his work is beyond exceptional and it is clear why he is a Master Builder. Nothing is too much trouble and Danny accommodated our every request. He and his team made our project a joy to have built. We really cannot recommend his company enough. We would be more than happy for any of his potential customers to come to our home and see the exceptional work they have done. We are over the moon with our finished project and will be using Danny and Constructek again. Thank you so very much more making our dream a reality.
Wells Brickwork
Rating: 5 out of 5
Extension Builder in Guildford
Brickwork
Get in touch
Latest review:
Extensions- 24 Sep 2020
Nick was the only builder that listened to our requirements and gave us suitable options for what we were wanting. The work has been completed to a very high standard and we will be using Nick again for other work that we have planned for the house. We highly recommend him.

4.7

Top rated Extension Builders

Our Extension Builders in Guildford, are rated 4.7 out of 5 based on 15 reviews 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 types of services are offered by local extension builders in Guildford?

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 Guildford 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 Guildford who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in Guildford?

Before getting started with your extension project, it’s important to have a clear budget in place. On average, extension builders in Guildford 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 Guildford extension builders near you on MyBuilder. This allows you to compare what each quote covers and how much your Guildford home extension project is likely to cost.

Find extension builders in Guildford with MyBuilder

Hiring the right extension builder in Guildford 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 Guildford extension builders. Once your job is live, we’ll share it with home extension builders in Guildford who can express their interest.

Step 2: Compare different extension builders in Guildford

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

Step 3: Hire Guildford extension builders with confidence

After gathering all the information and quotes from your chosen home extension builders in Guildford, 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.

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

What to ask a Guildford extension builder before hiring?

Before hiring an extension builder in Guildford or extension building company in Guildford, 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 Guildford?

An extension builder in Guildford 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 Guildford 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 Guildford?

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 Guildford 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 Guildford 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 Guildford

Can an extension builder in Guildford help with planning permission?

Yes, many extension builders in Guildford 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 Guildford handle everything from design to construction?

Many Guildford 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 Guildford help with materials and finishes?

Yes, most extension builders in Guildford 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.