Extension Builders in Harefield

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.1 (18 reviews)

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Some of our top rated extension builders in Harefield

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Home Reno Builders Ltd
No reviews yet
Extension Builder in Harefield
Hi i want to tell you one thing only, you will be proud yourself to hire me build your dream house.and i know you are spending your hard earned money foryour build a dream house once in a life.i have an experience last 25 years. all kind of building work taken.
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F S Building Services
Rating: 5 out of 5
Extension Builder in Harefield
Hi I am the owner of a small building company. We do all types of building work especially loft conversions & extensions, also fitted bathrooms & kitchens. External work Inc roofing & external decorating. GRP & EPDM rubber roofing. I am personally a carpenter by trade with over 35 years of experience.
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Latest review:
Bathroom Fitting- 2 Sep 2020
Really pleased with our new bathroom, total redesign and replacement including tiling. Fred could not have been more helpful offering advice on the design and options to get everything in we wanted. He and the team were punctual, clean and tidy (well as best you can under the circumstances!) friendly and helpful. Definitely recommend.
Amersham Builder
No reviews yet
Extension Builder in Harefield
Hi my name is Ryan , and I’m the proud own of Amersham Builders . Please feel free to go on to our website to look at are reviews and pictures of our work.
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Day Dream Construction Ltd.
No reviews yet
Extension Builder in Harefield
We are a professional group of companies who do all building work undertaken.
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Richings Design and Build Ltd
No reviews yet
Extension Builder in Harefield
We are a design and build company, whereby we provide architectural services and then build whats been designed. We do normal renovations and loft conversions too. Our passion lies in creating beautiful homes and helping our clients create their ideal living environment.
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R KELLS LTD
No reviews yet
Extension Builder in Harefield
Hello, and welcome! I’m Rkan the owner and lead builder of R KELLS LTD . With years of experience and a commitment to exceptional quality, I’m proud to be known as one of the best builders in London. Whether you’re looking to renovate, extend, or start a completely new project, I bring both expertise and passion to every job. I work closely with my clients to ensure that their vision becomes a reality, on time, on budget, and with the highest standards of craftsmanship. My focus is always on providing a hassle-free experience and delivering outstanding results. Let’s create something amazing together!
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MFC
No reviews yet
Extension Builder in Harefield
We are a new company inspiring to make building experience better for you. Between both of us we have over ten years experience in construction specialising in carpentry and landscaping. We are devoted to a high quality finish as well as building strong customer relationships with our clients.
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London Prime Construction and Builders LTD
No reviews yet
Extension Builder in Harefield
London Prime Construction and Builders is where we turn your dream home into a reality. With a reputation for excellence and a passion for exceptional craftsmanship, we specialise in residential construction, property extensions, and comprehensive renovations across London. Our mission is to enhance your living spaces with customised solutions that reflect your personal style and functional needs.
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LeveLine General Builders
Rating: 5 out of 5
Extension Builder in Harefield
LeveLine General Builders has grown steadily over recent years. We pride ourselves on customer service and attention to detail. We offer a full architectural and design service to ensure we deliver quality construction projects from start to finish, keeping the customer fully informed at all stages.
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Latest review:
Bricklaying- 27 Feb 2021
Andrew was prompt, efficient and produced high quality work. From the start, he made us feel comfortable we had given the job to the right person. I am extremely pleased we chose to use Andy and I will definitely recommend his services and use again should the need arise. Thank you very much for an outstanding job and pleasant experience.
Tharanikaa Traders
No reviews yet
Extension Builder in Harefield
High quality service
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Cengu building
No reviews yet
Extension Builder in Harefield
We doing anything that includes building, from gardens, to extensions, to electrical installations and faults
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AlfredM Building Contractors Ltd
Rating: 5 out of 5
Extension Builder in Harefield
AlfredM Building Contractors LTD Construction company specialising in • Loft Conversions • Extensions • Full House Refurbishments • Domestic & Commercial Building Services • New Build Eager to bring your dream project to life. Dedicated, efficient and passionate.
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Latest review:
Carpentry- 18 Jan 2025
Alfred and his team have done a great job. Replaced the floorboards, joists, installed insulation and damp proofing and sent the extra mile. Highly recommended and I am already using them for a host of other work.
Anamorphic & Co. Ltd.
Rating: 1 out of 5
Extension Builder in Harefield
Anamorphic & Co. Ltd (FMB Certified), the company behind CasaVera Luxury Interiors, is a West London-based construction and interiors firm with nearly 10 years of experience delivering high-end residential and commercial projects across London, Surrey, Berkshire, Hertfordshire and surrounding areas. Our Construction Services - Full house build or refurbishments - Kitchen and rear extensions - Loft conversions - Bathroom installations - Flat and HMO fit-outs - Multi-unit residential developments - Single-room refurbishments - Structural works - Project management What makes us genuinely different is that through CasaVera we supply and install our own bespoke interiors from our 8,500 sq. ft Experience Centre in West London. Everything is manufactured to order and fitted by our own team - no middlemen, no third-party markups, just quality at a fair and honest price. Our Interiors Range - Kitchens - Wardrobes - Bathrooms - Lighting - Internal Doors - External Doors - Wall Panels - Flooring - Staircases Spindles and Handrails - Furniture - Home Decor We are a firm built on trust, accountability and repeat business. The majority of our clients come through referrals, and that says everything about how we work. Company No. 12784775. Fully insured with public liability cover.
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Latest review:
Restoration & Refurbishment- 10 Jul 2026
Never answered any messages after saying they would do the work. Would not recommend.
Ceca Developments LTD
Rating: 5 out of 5
Extension Builder in Harefield
Hael Construction Ltd, a proud member of the Federation of master builders, is a trusted construction company based in North London, delivering high-quality building services across the region. We specialise in new builds, extensions, loft conversions, renovations, groundworks, electrical installations, and plumbing. With a skilled team of qualified tradespeople and experienced project managers, we provide a complete service from design to completion. Our focus is on quality workmanship, transparent communication, and delivering projects on time and within budget.
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Latest review:
Extensions- 23 May 2022
Ceca Developments have done an outstanding work on our side and rear extension project, and we would definitely recommend this company. Firstly, they have offered a really competitive quote for the work and have been very transparent and detailed in regards to how long it will take to complete the project. Sebastjan has been a pleasure to deal with and was very helpful during the project, providing honest and useful recommendations and being available every time we needed anything. All the work has been completed to a very high standard and to the agreed timelines. We did not have to worry about anything during the whole project, which made this a very pleasant experience.
D Bird carpentry and building LTD
Rating: 5 out of 5
Extension Builder in Harefield
Hi were Dbird Carpentry & Building we are a family run company by myself Daniel and my brother Ellis. We take pride and love what we do! We will help you every step of the way through your project no matter the size.
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Latest review:
Conversions - General- 21 Jun 2022
D Bird Carpentry completed the works on time and to a high standard. Dan and his team were a pleasure to work with and I would be happy to work with them again.
linas builders
No reviews yet
Extension Builder in Harefield
team of all trades with lots of experience in building industry. we only employ professional tradesman. Can provide reference by request. Honest, price competitive
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4.1

Top rated Extension Builders

Our Extension Builders in Harefield, are rated 4.1 out of 5 based on 18 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 Harefield?

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

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

What are the hourly rates of extension builders in Harefield?

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

Find extension builders in Harefield with MyBuilder

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

Step 2: Compare different extension builders in Harefield

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

Step 3: Hire Harefield extension builders with confidence

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

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

What to ask a Harefield extension builder before hiring?

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

An extension builder in Harefield 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 Harefield 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 Harefield?

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 Harefield 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 Harefield 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 Harefield

Can an extension builder in Harefield help with planning permission?

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

Many Harefield 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 Harefield help with materials and finishes?

Yes, most extension builders in Harefield 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.