Extension Builders in Farnham

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.3 (19 reviews)

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

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 Farnham

959 Results

Sort by:

Ktech Group LTD
Rating: 5 out of 5
Extension Builder in Farnham
We are a construction company that specialises in compliance works and social housing. We work with the best engineers to ensure our projects are carried out successfully with the best appraisal possible. Contact us today to discuss your project and set up a consultation. Our service areas include London, Kent and Southern East counties.
Get in touch
Latest review:
Carpentry- 7 Aug 2025
Ash and his team from Ktech did a great job installing the flitch beam to structural spec. The job required real effort, coordination and attention to detail and they delivered. Professional, reliable and easy to work with. I’d strongly recommend them.
Hambro Builder Ltd
No reviews yet
Extension Builder in Farnham
At Hambro Builders we have one mission and that is to make our client's dream homes a reality. Whether the project be a small refurbishment or a full scale transformation our aim is the same. We pride ourselves of having high standard of workmanship to create a beautiful home at an affordable price.
Get in touch
Home Renovations Ltd
Rating: 5 out of 5
Extension Builder in Farnham
We're a building company specializing in house extensions, loft conversions and refurbishments. Our clients come from New Malden, where we're based, but also surrounding areas. The vast industry experience enables us to provide valuable advice, professional services and individual approach, benefiting our customers. As we understand trust and credibility are crucial when undertaking such projects, we arrange viewings and provide customers with references and photos of our most recent projects.
Get in touch
Latest review:
Extensions- 24 Jun 2017
We had a large piece of work done by Johan and his team. It was a 4m single storey rear extension with new kitchen installation, converting the old kitchen into a downstairs bathroom and utility room, plus other bits and bobs like new boiler, rear patio. We got quotes from a few builders, Home Renovations weren't the cheapest, they were actually towards the higher end. But we went and saw their previous work and spoke to some of their other clients. The work was done to a high quality and the clients seemed to be happy so we decided to go with them. Johan's team are very hard working, professional and polite. Pawel and his team of builders, bricklayers, plumbers, electricians, etc. would turn up before 8am and finish at 6pm working solidly throughout the day. There is Magda as the project manager who keeps you in the loop, and answers any of your questions (which we had many). There is Michaela on the finance side who keeps you up to date with the budget. Our budget went over by 5% with "variations" (extra work or materials) but it was always communicated why and the work wasn't done without our approval. Pawel would give his recommendations but the final word would always be ours. But these things can add up. Overall we were very happy with the build, it was done to a very high standard. They also finished it before time. They said it would take 12 weeks in fact they finished it in 10 weeks which was amazing as you would normally expect these things to go over.
Seymour Groundworks & Construction Ltd
No reviews yet
Extension Builder in Farnham
Seymour Groundworks & Construction Ltd are a hard working construction team who offer a lot of services! We deal with all things from drainage and services, garden renovations, paving and driveways to extensions plus so much more.
Get in touch
22g construction limited
Rating: 5 out of 5
Extension Builder in Farnham
Hi , we are here on this platform to make your dream house into reality , with 20years of experience in all trades and expertise we will make sure you get the best service , so chose us for any kind of construction work . Thanks
Get in touch
Latest review:
22g construction did my bathroom refurbished they did very good job more than my expectation I am happy to recommend 22 G construction anyone who’s looking refurbishment extension or any other work
Garden Space Projetcs limited
Rating: 5 out of 5
Extension Builder in Farnham
Garden Space Projects are a business located on the South Coast that specialises in constructing Light Gauge Steel Garden Rooms. Our building method is designed to speed up construction, reduce costs, and increase durability. Unlike traditional building methods, our approach allows us to build any garden room design you require without the usual hassle. We also instal Composite Cladding; Fencing and Decking.
Get in touch
Latest review:
Composite Decking. Absolutely amazing work, George was polite and friendly, answered all my questions with ease and went the extra mile ensuring I was happy,keeping me updated at all stages. Great service all round. Highly recommend. Thanks you George great assett to the company.
Trusted Hands Carpentry & Building
Rating: 5 out of 5
Extension Builder in Farnham
Experienced fitter, carpenter, and builder with over 30 years in the trade, delivering high-quality workmanship with true German precision. I’ve completed thousands of projects, from kitchens and bespoke carpentry to full property renovations, always focusing on detail, durability, and a flawless finish. My goal is simple: reliable service, clear communication, and results that leave every client completely satisfied.
Get in touch
Latest review:
Kitchen Fitting- 12 Jul 2026
We couldn't be happier with our new kitchen! From start to finish, the workmanship, attention to detail, and professionalism were outstanding. Tomasz completely transformed the room, carrying out a full renovation including the ceiling, walls, flooring, installation of the new kitchen, worktops, appliances, lighting, tiling, and all the finishing touches. Every stage was completed to an exceptionally high standard, and the quality of the work is evident in every detail. Communication was excellent throughout the project. Tomasz is very reliable, punctual, hardworking, and always kept the work area clean and tidy. Nothing was too much trouble, and he took real pride in making sure everything was perfect before the job was finished. The end result has exceeded our expectations. The kitchen is not only beautiful but also practical, modern, and finished with incredible precision. We've already received so many compliments from family and friends. We would highly recommend Tomasz to anyone.
13-13 BUILDERS LTD
Rating: 4.5 out of 5
Extension Builder in Farnham
I do plastering, plaster board, carpentry, partition, roofing, groundwork’s, driveways, gardening, extension, loft conversions
Get in touch
Latest review:
Carpentry- 25 Apr 2026
Very helpful, fixed my front door sill and other odd jobs around the house. Would call again and good quality
Karan construction
Rating: 5 out of 5
Extension Builder in Farnham
All construction work undertaken contact for any interior or exterior work
Get in touch
Latest review:
Hard Flooring- 21 Aug 2025
Karan is absolutely brilliant,so polite,he laid my new laminated floor and done an amazing job I would highly recommend
DPS Builders
No reviews yet
Extension Builder in Farnham
Good and right work starting to finish
Get in touch
QC Projects Ltd
No reviews yet
Extension Builder in Farnham
At QC Projects , we specialise in high-quality residential and commercial construction across London and the surrounding areas. With over 10 years of industry experience, we pride ourselves on delivering projects professionally, safely, and to the highest standard from start to finish. Our services include extensions, loft conversions, full refurbishments, structural alterations, bespoke joinery, kitchens, bathrooms, roofing, fit-outs, decorating, and complete project management. Whether it’s a modern home renovation, a high-end finish, or a complex structural project, we bring the same attention to detail and commitment to quality on every job. We understand that choosing the right builder is a major decision. That’s why communication, transparency, cleanliness, and reliability are at the centre of how we operate. We work closely with clients, architects, designers, and building control to ensure projects run smoothly and are completed on time and within budget. Our team is fully committed to customer satisfaction and building long-term relationships through trust, workmanship, and professionalism. No shortcuts, no hidden surprises — just quality construction delivered properly. "Visit our website for more of our work"
Get in touch
Simon Zajac
No reviews yet
Extension Builder in Farnham
Hi I worked as a Subcontractor over 8 years on multiple construction from groundwork to fully refurbished projects . I like to think of myself as a honest , reliable and hardworking person .
Get in touch
Fastway Constructions Limited
Rating: 5 out of 5
Extension Builder in Farnham
At Fastway Constructions, we are dedicated to redefining the construction industry through sustainable practices and innovative solutions. Based in the United Kingdom, we pride ourselves on delivering exceptional quality and reliability across four key sectors: Residential Constructions, Commercial Constructions, Industrial Constructions, and Renovation & Remodelling Here at Fastway all of our employees are fully qualified, skilled and very experienced building contractors that have worked on hundreds of projects over the years resulting in 100% client satisfaction, full job completion on time, and always well within budget. All employees hold cscs cards for their relevant trades along with health and safety certificates and first aid for a competent safe worksite at all times. We are a building contractor with a professional approach to all our projects. We offer a seamless and multi-trade service, for all domestic projects from new builds, extensions, loft conversion, renovation to fully finished houses, all tailored to meet our clients’ specific requirements.
Get in touch
Latest review:
Plumbing- 1 Aug 2025
Jitin did a good job in finding a solution to the leak in the washing machine drainage pipe. He used his experience in problem solving and fixed the issue. Thanks Jitin
Wooburn Project Management Ltd
Rating: 5 out of 5
Extension Builder in Farnham
Our company is family owned and we work on all property types from small extensions to building new homes and refurbishments containing multiple units, we employ most of our people directly and have built a family atmosphere giving us more control on the program and our main subcontractors have worked with us for many years .
Get in touch
Latest review:
Extensions- 1 Sep 2021
I have nothing but praise for Michael and his team. The project was managed exceptionally well and Michael kept us apprised of progress, emerging issues (which were dealt with quickly and with some innovative thinking) and he was honest and candid with our choice of kitchen tile (I think his words were do you want to rethink that colour!). Michael quoted in Nov and started work in the Spring (late Mar) and held his price despite a national increase in the price of materials and reduced availability which he managed admirably. Obviously a man with a good eye; his suggestions for additional works were inspired and they have resulted in a high quality finish. Finally, it is worth mentioning the team who did the grafting! Very industrious, skilled, polite and helpful. Highly recommend Wooburn PM to anyone considering building work. :-)
Giger Developments
No reviews yet
Extension Builder in Farnham
Giger Development is a reliable and professional bricklaying company specialising in high-quality brickwork, blockwork, and general building services. We take pride in delivering strong, precise, and long-lasting results across both residential and commercial projects. From garden walls and extensions to structural brickwork and repairs, we combine skilled craftsmanship with a strong work ethic to ensure every job is completed to the highest standard. We focus on attention to detail, clear communication, and fair pricing, giving our clients confidence from start to finish. At Giger Development, we understand the importance of doing the job right the first time — building work that not only looks great but stands the test of time.
Get in touch
Peter Build
Rating: 5 out of 5
Extension Builder in Farnham
We offer professional service for all your local building requirements. With our team of professionals no job is too small or too big to handle. From Small Brickwork jobs to large extension work, we can do it. Our team of professionals have years of experience and know-how to carry out all jobs to the highest quality without charging extortionate prices.We are a small friendly local Builders with over 20 years experience!
Get in touch
Latest review:
Bathroom Fitting- 5 Nov 2019
I met up with Peter, told him what needed doing and he provided a detailed quote within days. I handed over a set off keys and basically left him and his team to get on with it! This was a time restricted job, he purchased all the material and provided all the receipts. I returned a week later to find the job completed to the highest standard surpassing my expectations. I will definitely be working with Peter again in the future and I would highly recommend him.

4.3

Top rated Extension Builders

Our Extension Builders in Farnham, are rated 4.3 out of 5 based on 19 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 Farnham?

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

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

What are the hourly rates of extension builders in Farnham?

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

Find extension builders in Farnham with MyBuilder

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

Step 2: Compare different extension builders in Farnham

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

Step 3: Hire Farnham extension builders with confidence

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

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

What to ask a Farnham extension builder before hiring?

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

An extension builder in Farnham 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 Farnham 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 Farnham?

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 Farnham 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 Farnham 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 Farnham

Can an extension builder in Farnham help with planning permission?

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

Many Farnham 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 Farnham help with materials and finishes?

Yes, most extension builders in Farnham 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.