Extension Builders in Chalfont St Giles

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 3.5 (11 reviews)

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

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 Chalfont St Giles

2060 Results

Sort by:

Venher Limited
Rating: 5 out of 5
Extension Builder in Chalfont St Giles
We can undertake all your heating works as we are Gas Safe registered our service provides the safest solutions and the highest quality standard of work. Our heating & gas services include: • Gas and Central Heating Installation • Gas Safe Registered • Landlord Gas Safety Checks • Boiler Installation, Repair and Service • Gas Cooker and Fire Installation, Service and Replacement • Safe Capping Off of Unused Gas Pipework • Radiator Installation, Relocation, Repair • Thermostats and Smart Thermostats Installed and Replaced • Bathroom and Wet Room fitting • Pipework Replacement, Lead Pipework Removed and Replaced • Leak Detection
Get in touch
Latest review:
Gas Work- 3 May 2026
Very professional, thorough with good communication. Explained the job. There was a slight increase in initial work, which did incur an additional cost but it was explained clearly by him. Would definitely recommend and use again
Provision construction Ltd
Rating: 5 out of 5
Extension Builder in Chalfont St Giles
Provision Construction Ltd is a family-run company that has built its reputation on the basis of quality and value of work. We pride ourselves on our high standards of work and excellent results, which have resulted in a high volume of recommendations from our clients. Our team has extensive experience in undertaking projects ranging from minor repairs and maintenance to major refurbishment ,Extensions ,Loft conversion ,New build and construction works.
Get in touch
Latest review:
Extensions- 12 May 2026
Maninder recently built an outhouse for us and we were extremely impressed with both the quality of work and his honesty throughout the project. Everything was completed exactly as promised, with no hidden costs or unexpected extras. The workmanship was excellent, and even other tradespeople have commented on the high standard of the build. What also stood out was that Maninder always recommended the right approach, even when it meant extra work for his team. Highly recommended.
BlueCrownBuilders
Rating: 4.8 out of 5
Extension Builder in Chalfont St Giles
Hi My name is Satinder Singh @BLUECROWN BUILDERS LTD I am a specialist in variational constructional activities : Groundworks specialist (Drainage, Utilities, Concrete finishing, Kerbs, Edges Concrete slabs, Foundations) In house/ paint and decorating and house renovations Gardens Drives/patios Hedge cutting/trimming Clearances
Get in touch
Latest review:
Garden Maintenance- 3 Jun 2025
Great job done for an overgrown garden, very clean work, took all the gardening waste with them and cleaned the patio and the lawn. Very polite man and never needed to explain the job after the first convo. Definitely recommend him, very humble and honest guy!
Bricklayer
Rating: 5 out of 5
Extension Builder in Chalfont St Giles
Brickwork . New build, extension . Garage
Get in touch
Latest review:
Bricklaying- 10 Jul 2023
I am very pleased with the work done Excellent clean job Mr Bicol has carried out
Mbalau Construction LTD
Rating: 5 out of 5
Extension Builder in Chalfont St Giles
Builder with 20 years of experience . I provide a wide range of building services such as: loft conversion, extensions,bathroom refurbishment,house refurbishment , plumbing and electric etc . I have the tools,knowledge and team to build a house from start to finish . I can provide references and pictures of previous work upon request .
Get in touch
Latest review:
Complete refurbishment of 2 bed 1100 sq ft flat. Including removal internal walls Ripping out and renovating 2 bathrooms. Involving new layout replumbng and relocation of #electrics. Tileing Preparing and laying wood flooring throughout. Fitting shelving and book case. The work over 2 months involved all building skills. Throughout Marcel and his highly skilled crew were efficient clean and resourceful. I would highly recommend for all building and decoration work.
Raj Building Contractors LTD
No reviews yet
Extension Builder in Chalfont St Giles
At Raj Building Contractors, we specialise in high-quality construction services for extensions, conversions, new builds, renovations and landscaping in West London. With years of experience, we deliver expert craftsmanship, attention to detail, and reliable service from start to finish. With over 20 years of experience and expertise, we can make sure you're able to turn your vision into reality, on time and within budget.
Get in touch
H S CONSTRUCTION LONDON LTD
Rating: 5 out of 5
Extension Builder in Chalfont St Giles
HS construction is a reliable business based in Berkshire/West London covering all aspects of building work. Established since 2009, HSC has worked with many homeowners and architects to deliver high-quality structures across London and home counties . HSC are a registered and fully insured business ready to take on projects no matter how big or small . We offer a free no obligation quote and a site visit prior to quotation as well as having many links with experienced architects .
Get in touch
Latest review:
I have been using HS Construction London for many years ranging from a full house refurbishment to smaller unexpected issues. I have always found them to be reliable and genuine. There are never any hidden surprises in the end. Sunny listens to his customers and also gives decent advice where needed. Their work is of quality and has a long life. I particularly impressed with how they complete the job in a timely manner. All the materials that have been used are of great quality; and it shows. In addition, HSC has many contacts such as architects, suppliers etc which has made my life so much easier. Reasonably priced and with great knowledge, i would certainly use them again.
Keystone Buildworks
No reviews yet
Extension Builder in Chalfont St Giles
Hello and welcome to my profile. I am a hardworking and reliable professional with several years of experience in hands-on work and customer service. Throughout my career I have developed strong practical skills, attention to detail, and a commitment to completing every job to a high standard. I take pride in being punctual, organised, and respectful when working in customers’ homes or businesses. I am based in the Buckinghamshire area and I am happy to travel to nearby towns and surrounding areas for work. I always aim to be flexible and accommodating so I can meet my customers’ needs. My key strengths include problem-solving, practical repair and maintenance work, and providing friendly, professional service. I believe in doing the job properly the first time and making sure every customer is satisfied with the result. If you choose to hire me, you can expect someone who is dependable, honest, and committed to delivering quality work. I treat every job with care and always aim to leave customers happy with both the work and the service they receive. I look forward to working with you.
Get in touch
A1
Rating: 4.8 out of 5
Extension Builder in Chalfont St Giles
Hi i m Gurlal singh We are available 24 hour
Get in touch
Latest review:
Plumbing- 5 May 2025
On time and great work ethic would truly recommend
Arisha services ltd
Rating: 5 out of 5
Extension Builder in Chalfont St Giles
I am gas safe register by qualification, and undertake most of heating and plumbing jobs. Which can be megaflo, new installation of boilers and repairs. I have skills to lay any type of floorings. I have been in the trade over 6 years and take on extention, conversions of lofts, renovations, bathroom, kitchens, tilling, skimming, painting. I can do decking, polycarbonated sheets, glassfiber roofs, sheds, screeding, concreting. I would cover most of building work.
Get in touch
Latest review:
Good manners and workmanship I will definitely use your services again Thanks Man
Andrei Socaci
Rating: 5 out of 5
Extension Builder in Chalfont St Giles
Reliable, responsible and self motivated person with experience in the building industry. It will be a pleasure to undertake your work.
Get in touch
Latest review:
Hard Flooring- 19 Jan 2026
Great job in replacing the flooring. The floor looks good and he was efficient, reliable and cleaned up well after
WS Building
Rating: 4.8 out of 5
Extension Builder in Chalfont St Giles
I am Builder with 30 years experience in all kind of building projects.Together with my team we can provide for you a complete building service and help with advice in any aspects of building works. We specialise in: conversions, extensions, renovations, reconfigurations, basements, lofts, new kitchens and bathrooms, flooring , doors, gardening, demolition works, roofing, steel installation, plastering, painting and decorating and all others of building works included electric and plumbing.
Get in touch
Latest review:
Restoration & Refurbishment- 10 Nov 2025
Professional and on time, recommended
Seaton-Robinson construction limited
No reviews yet
Extension Builder in Chalfont St Giles
Seaton-Robinson construction limited I'm a builder with 30 years experience I have a team who work for me ( plumbers,eletriction, carpenters ,all trades. We do all aspects of building works from small extensions ,loft conversions ,double storey extensions and total refurbishments. We can do all aspects of work on the building site even down to the decorating.
Get in touch
SJD BUILD LTD
Rating: 5 out of 5
Extension Builder in Chalfont St Giles
Full House Renovations , Kitchen , Bathrooms , Driveways , Extensions, Loft Conversions ,
Get in touch
Latest review:
Exceptional Home Building Experience Rating: ⭐⭐⭐⭐⭐ (5/5 stars) I recently had the pleasure of working with Jarmaljit Singh to build my dream home, and I cannot express enough how thrilled I am with the entire experience. From start to finish, every aspect of the process was handled with the utmost professionalism and attention to detail. Communication: ⭐⭐⭐⭐⭐ (5/5 stars) Jarmaljit Singh and the entire team were excellent communicators throughout the entire project. They kept me informed at every stage, promptly addressed any concerns or questions I had, and ensured that I felt involved in the decision-making process. Quality of Work: ⭐⭐⭐⭐⭐ (5/5 stars) The craftsmanship and quality of workmanship displayed by Jarmaljit Singh exceeded my expectations. The attention to detail is evident in every corner of my new home. The materials used are of the highest quality, and the construction is solid and well-executed. Timeliness: ⭐⭐⭐⭐⭐ (5/5 stars) Jarmaljit Singh adhered to the agreed-upon timeline, completing the project on schedule without compromising the quality of the work. This level of reliability was greatly appreciated, and it made the entire process stress-free. Customer Service: ⭐⭐⭐⭐⭐ (5/5 stars) The customer service provided by Jarmaljit Singh was exceptional. They went above and beyond to ensure my satisfaction, addressing any concerns promptly and with a genuine commitment to making sure I was happy with the end result. Overall Experience: ⭐⭐⭐⭐⭐ (5/5 stars) Building a home can be a daunting process, but thanks to Jarmaljit Singh, it was a smooth and enjoyable experience. I am now the proud owner of a beautifully crafted home that meets and exceeds all my expectations. I highly recommend Jarmaljit Singh to anyone looking for a reliable, skilled, and customer-focused home builder. Thank you for turning my vision into a reality!
westcraft ltd
Rating: 5 out of 5
Extension Builder in Chalfont St Giles
Welcome to Westcraft Limited. We have been established for over 10 years, and have gained a vast amount of design, construction and building experience. At Westcraft we are proud to provide our clients with a full and comprehensive service, from Design and planning to the final build.
Get in touch
Latest review:
Loft Conversion- 26 Feb 2024
We are happy with the service. We are working on other projects together as well. Manjinder is a great guy, very experienced and responsive.
Electroplumech MEP Services Ltd
Rating: 5 out of 5
Extension Builder in Chalfont St Giles
Service, repair and installation: Mechanical Electrical Plumbing HVAC (Heating, Ventilation and Air conditioning) Pumps
Get in touch
Latest review:
Plumbing- 22 Dec 2025
Very good Came on time, very nice and polite, did the job (only time will tell if it is fixed unfortunately), hassle free service

3.5

Top rated Extension Builders

Our Extension Builders in Chalfont St Giles, are rated 3.5 out of 5 based on 11 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 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.