Extension Builders in Chalfont St Giles

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 3.4 (10 reviews)

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Some of our top rated extension builders in Chalfont St Giles

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Tim Alwyn Building Services
Rating: 5 out of 5
Extension Builder in Chalfont St Giles
Having been in the construction for about 20 years, I take on various jobs like extensions, rebuilds, patios, garden walls and all aspects of building works. Mainly aspects of brickwork and blockwork from the ground upwards.
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Latest review:
Bricklaying- 16 Nov 2024
Tim did a brilliant job rebuilding a wall on our driveway and doing some repointing. He was responsive, reliable and his work was of the highest quality. A real gent. My neighbours and the rest of our road are now after his help!
Yes
Rating: 5 out of 5
Extension Builder in Chalfont St Giles
With over 10 years of experience, SD services covers every aspect of carpentry including but not limited to kitchen and bathroom renovations in London and surrounding areas. SD Homes is truly your local and friendly handyman. We will build your dream home.
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Latest review:
I would like to say that this work was completed perfectly. They were always on time and cleaned up after themselves. The plumber was there all day and never stopped. We found them all very approachable and helpful. No pressure sales. Would gladly have them back for another job and would recommend them to others.
Donnelly Building
Rating: 5 out of 5
Extension Builder in Chalfont St Giles
A Carpenter by trade, I have been in the building trade for over 30 years. My company can provide you with a competitive quote for New Builds, Extensions, Conversions, Fitted Kitchens, Made To Measure Wardrobes and Bespoke Internal Shutters. I look forward to assisting with your project.
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Latest review:
Carpentry- 18 Feb 2021
Dean was great. Nice guy, did the work efficiently and at a fair price, I'd definately ask him to help on anything we do in the future.
CC BUILDERS UK & DEVELOPMENT
Rating: 5 out of 5
Extension Builder in Chalfont St Giles
CC Builders UK Development well-established company, by a professional tradesman. Our team consists of hard-working men, who are all very experienced within the industry. We take pride in our work and always aim to deliver the best possible work. We specialise in: · New Builds · Extensions · Loft Conversions · Refurbishments
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Latest review:
Bricklaying- 29 Feb 2020
"Brilliant. Happy and satisfied. Delighted with his work." Very clean finish and polite people Thanks again for the work. xxx
N h building and carpentry
Rating: 5 out of 5
Extension Builder in Chalfont St Giles
Hi I have over 15 years of building and carpentry experience. I am fully qualified carpenter with level 3 City & Guilds. Me and my small team will undertake anything from extensions to hanging a door. Customer satisfaction is our ultimate goal with a good attention to detail. Fully insured
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Latest review:
Joinery & Cabinet Making- 2 Mar 2018
Neil did an excellent job! We needed 5 oak veneer doors hung throughout the house including two bathrooms with the locks. He hung all 5 doors in one morning and then came back with a couple of willing assistants to fit the latches etc. a couple of days later. He cleaned up after the work very well and left the property very clean and no sawdust left. We are very pleased with the fitting and the doors all look lovely and can definitely recommend this firm.
S.A.S Electrical Solutions
Rating: 4.8 out of 5
Extension Builder in Chalfont St Giles
We are a reliable and friendly business and value ourselves for the quality workmanship we can give you. We are an N.I.C.E.I.C fully approved trained electrical company that covers all aspects of wiring from Domestic or commercial to industrial premises. We have 20 + years experience. We complete and oversee all aspects of building trades to complete various types of projects. We now also specialise in Photovoltaic Solar Installation & Electric Vehicle Chargers.
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Latest review:
Electrical- 30 Oct 2025
Since Steve and his team came on board, the progress on site has improved significantly. Their professionalism, efficiency, and strong work ethic have made a real difference. Steve provided a very fair and reasonable quote, and his approach to the job has been both proactive and solution-focused. Even though the work is still in progress, it’s clear that Steve’s expertise and leadership are helping to move things forward faster and more smoothly than before. His attention to detail and willingness to go the extra mile have been greatly appreciated. I’m very pleased with the results so far and have full confidence that the finished work will be of a high standard. I highly recommend Steve and his team for any electrical work, they’re reliable, skilled, and a pleasure to work with.
KFN Plastering & Property Maintenance
Rating: 4.8 out of 5
Extension Builder in Chalfont St Giles
KFN Plastering & Property Maintenance is a trusted and professional company with over 18 years of industry experience. Based in Watford, we take pride in delivering exceptional workmanship, attention to detail, and outstanding customer service on every project. Fully vetted and committed to the highest standards, we provide reliable plastering and property maintenance services tailored to meet our clients’ needs. Whether undertaking small repairs or larger renovation projects, we consistently deliver a high-quality finish with a focus on professionalism, cleanliness, and customer satisfaction.L
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Latest review:
Plastering- 29 Mar 2024
Confronted with a difficult narrow stairwell and hall for access, the guys worked hard and overcame all obstacles. A high standard of finish and cleaned up afterwards. I highly recommend them, and will contact Karl again for future work.
Icv Building SERVICES
Rating: 4.5 out of 5
Extension Builder in Chalfont St Giles
We are a professional construction team. Our services include: New Builds Residential and Commercial Refurbishments Tilling Electric Plumbing Gardening & Landscape Painting and decorating External painting Paint spraying Plastering Dry wall Carpentry Kitchen and bathroom fitting And much more All for a very competitive price!!! Contact us today for a FREE QUOTE!
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Latest review:
Restoration & Refurbishment- 11 Sep 2024
I gave them work worth over £21000. They were good at doing the ceiling work but I am not happy about the way they left the bathroom. There are places where they have not done grouting and parts of the radiators, holes, left without completing. Damages to my staircase, very expensive French wood wardrobe my double bed and my chandeliers were just left without being fixed.
Stonyprojects Ltd
Rating: 5 out of 5
Extension Builder in Chalfont St Giles
Founded with a vision to revolutionise professional customer service within the construction industry. Stony projects Ltd leverages over 20 years of experience working in project and commercial management. Our team has collaborated with leading house builders in th U.K. on prestigious developments and commercial projects, while also providing comprehensive construction services to domestic clients, including new builds refurbishments and general repairs Our mission At stony projects Ltd, our mission is to deliver exceptional service and expertise to both domestic clients and construction professionals. We are committed to upholding our core values of outstanding customer service and the highest quality in all our endeavours. Our services We offer a full suite of services Quantity surveying and estimating - tailored services for construction professionals Comprehensive construction services From conception to completion for domestic and commercial clients, covering new builds, renovations, repairs and restructuring. Commitment to excellence We strive to provide our clients with security, peace of mind, transparency and economic value ensuring a level of excellence in every project we undertake
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Latest review:
Had a great experience with stonyprojects their work was to a great standard, they were very helpful and easy to get hold of whenever needed. Would 100% recommend
Oli Home Improvements Ltd
No reviews yet
Extension Builder in Chalfont St Giles
Always happy to help 20 years experience Many great projects in your area. From start to finish Build Extend Renovate
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A. D. Builders
Rating: 5 out of 5
Extension Builder in Chalfont St Giles
Hi , I’m Aaron Davis of AD builders, I Have been in the building trade for 20 years. Orginally worked for my father in a family run business. I take a lot of pride in my work , references are available at any time. I'm a bricklayer by trade and ground worker. I have built many extensions over the years, and enjoy it now just as much as I did when I began. My work is of a very high quality , thanks for taking the time to read through my profile.
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Latest review:
Extensions- 23 Dec 2021
We originally asked Aaron to come look at the property before we purchased to understand the possibilities of a large extension. Since that point over a year ago Aaron has worked with us in refurbishing the existing house as well as building a large wrap around extension. The core team we had on site of Aaron, Dan, Karl are hard working, they care about what they do, and they are good fun to be around. Aaron also has a broad network across all the other trades - all of which did a great job on the project. I would certainly recommend them for any work you are considering.
DHILLON B Construction Ltd
Rating: 5 out of 5
Extension Builder in Chalfont St Giles
“Transforming your house into your dream home — with expert craftsmanship, on-time delivery, and a team you can trust.” Building better homes, one family at a time — trust us to make real Maximize Your Space, Maximize Your Home’s Potential” • “Specialists in Extensions, Conversions, and Renovations” • “Custom Builds to Suit Every Lifestyle” • “Turning Loft Space into Living Space” • “Renovate. Extend. Transform.”
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Latest review:
I was looking for someone reliable to do my kitchen to the required specifications and I must say I am very pleased with Dhillon construction who managed the whole project and my Kitchen looks the best part of my house. Full kitchen installation was done with flooring, tiling, skimming the wall, ceiling, electrical and plumbing and he also opened a new french door on my kitchen wall and closed the old door with great brickwork. Thankyou Baltej Dhillon and team.
BML Building Services
Rating: 4.9 out of 5
Extension Builder in Chalfont St Giles
Very hard working and take a lot of pride in the work done and attention to detail.
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Latest review:
Conversions - General- 24 Feb 2026
Ben did a great job, competitive quote, provided valid insurance certs, arrived early, good communication, was courteous to the neighbors, worked well with Building Control and was completed on time. Would have no hesitation recommending Ben.
ART BUILDING & SERVICES LTD
Rating: 5 out of 5
Extension Builder in Chalfont St Giles
ART Building & Services is a Slough-based building company carrying out construction services, property maintenance and installation work across Berkshire and London areas. As one of a few prime building companies, our main strength is based on providing complete solution, from initial concept right through to planning applications and to the final build.
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Latest review:
Extensions- 9 Nov 2021
Artur and his team are very professional and polite. The single storey extension was built to a very good standard. The building site was always kept tidy. Artur kept us informed throughout the process. I strongly recommend using Art Building Services.
Aurelian
Rating: 5 out of 5
Extension Builder in Chalfont St Giles
Hi we are" Probuildynamics" more photos can be check via FB or or company website.
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Latest review:
He is very methodical and does the solid work . No short cut and messy work.
Clint Cumber
Rating: 5 out of 5
Extension Builder in Chalfont St Giles
I'm new to my builder but I am a seasoned builder with 25 years of experience. I take pride in all that I build and have many references. I specialise in loft conversions and extensions but I also undertake smaller and larger projects including new build homes. I cover all trades used within a property, I have photos of previous projects that I can send over at any time along with a contact for client in question.
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Latest review:
Clint and his team built a loft conversion for me, they were all very pleasant showed me the work at different stages which kept my nerves down. They were clean and tidy, I don’t know much about building but the finish was extremely good. They were always on time and I would highly recommend them to anyone.

3.4

Top rated Extension Builders

Our Extension Builders in Chalfont St Giles, are rated 3.4 out of 5 based on 10 reviews from customers like you.

Quality screening

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What types of services are offered by local extension builders in Chalfont St Giles?

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 Chalfont St Giles 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 Chalfont St Giles who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in Chalfont St Giles?

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

Find extension builders in Chalfont St Giles with MyBuilder

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

Step 2: Compare different extension builders in Chalfont St Giles

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

Step 3: Hire Chalfont St Giles extension builders with confidence

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

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

What to ask a Chalfont St Giles extension builder before hiring?

Before hiring an extension builder in Chalfont St Giles or extension building company in Chalfont St Giles, 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 Chalfont St Giles?

An extension builder in Chalfont St Giles 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 Chalfont St Giles 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 Chalfont St Giles?

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 Chalfont St Giles 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 Chalfont St Giles 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 Chalfont St Giles

Can an extension builder in Chalfont St Giles help with planning permission?

Yes, many extension builders in Chalfont St Giles 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 Chalfont St Giles handle everything from design to construction?

Many Chalfont St Giles 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 Chalfont St Giles help with materials and finishes?

Yes, most extension builders in Chalfont St Giles 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.