Extension Builders in Harefield

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 3.9 (15 reviews)

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Some of our top rated extension builders in Harefield

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Eaglestone Building Limited
Rating: 5 out of 5
Extension Builder in Harefield
My name is Mark. Welcome to my building company Eaglestone Building Ltd. I have over 30 years experience in the construction industry. I specialise in extensions, refurbishments, flat roofing and general property maintenance. Most of my work comes from referrals. I pride myself on attention to detail and customer satisfaction. Contact me today for a free, no-obligation estimate.
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Latest review:
Mark and his team did a great job with my front garden from start to finish. he has taken my sketched design and brought it to life. I was really happy with the way that he would consult and make suggestions, explaining what the steps were from the clearance through to when the work would finish. I have had a lot of compliments including delivery drivers who have noticed the improvements. Thanks Mark for a great job.
Dhillon projects
Rating: 5 out of 5
Extension Builder in Harefield
Hi welcome my profile I’m Harman Dhillon, am professional all building work like home renovations,extensions, bathroom fitting &tiles, patio tiles, kitchen tilling, skimming, paint & decorate as well. I have good customer experience as finishing job on a date & they are very satisfied with me as well as my work. Thank you everyone for giving me that opportunity.
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Latest review:
Tiling- 22 Sep 2025
Amazing job done with the grouting. Thank you. The bathroom looks amazing and the grouting work and sealant replace was neat
Sfs building and joinery
Rating: 5 out of 5
Extension Builder in Harefield
Hi am Scott recently moved down south from Newcastle, I am a time served shopfitter and had lots of experience in building work over the last 20 years, I am honest, reliable and take pride in my work, I also treat every customer and the customers property with respect.
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Latest review:
Joinery & Cabinet Making- 9 Jun 2023
Scott was absolutely fantastic. He was extremely friendly from the very start of discussing the job on the phone to the finishing of the job. He gave great advice about what needed to be done and was extremely helpful throughout the process. His craftsmanship was exception, I couldn’t be happier with the kitchen! He went above and beyond to ensure that the kitchen project was completed to a high quality and made sure that we were completely happy with it before finishing the job. I highly recommend Scott and would hire him again without any hesitation!
PJS Builders
Rating: 5 out of 5
Extension Builder in Harefield
30 years experience Extensions Loft conversions Refurbishments Maintenance Decorating Fully insured Friendly service
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Latest review:
Extensions- 22 Aug 2022
PJS and Paul were fantastic. They kept us informed at all stages of the build, were quick and efficient, offered sensible suggestions when we discussed different parts of the build and did not force their opinions or thoughts, just explained what would happen for the different choices that were available. All rubbish was cleared away afterwards and the project was finished within time and budget. We are very happy with the final result. No problems with them at all, would heartily recommend Paul Johnson for your building work.
Athwal Constructions Ltd
Rating: 5 out of 5
Extension Builder in Harefield
Hi its jaswinder Singh. working as a soletrader since 2013 i have been working in this trade since 2003 i have done loft conversions , rear and side double extentions , full house renovations etc.20 years of experience in this trade.
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Latest review:
Athwal we’re fantastic in their work for us - reliable, very high standard of workmanship, on budget, efficient, courteous.
HM Construction Ltd
Rating: 5 out of 5
Extension Builder in Harefield
We are building company,specialised in tilling,carpentry,bricklaying. We also take decorating jobs to.
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Latest review:
Carpentry- 11 Aug 2022
Work completed to a high standard. Friendly, honest and trustworthy.
Bains builder
Rating: 4.6 out of 5
Extension Builder in Harefield
we are doing many sort of work according to the customers need like plumping, electric work, bath and kitchen, loft extension and many more. our work is always out standing and always ready to help you.
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Latest review:
Bathroom Fitting- 25 Mar 2024
He was good when doing the job, and workmanship was very good, I cannot complain about that. I think what let down the entirety is aftercare & integrity of the builder. The fact we had given him multiple jobs in our house not just this one, and the first big issue we had within the first 2/3 months where our electrics stopped working in the bathroom for him to refuse to come unless I paid him £80? People usually give warranty with work and he claimed he doesn’t give more then a month which I find concerning especially with plumbing work, imagine a small leak getting worse over time before finding out. Luckily I had building insurance so when an electrician came out he said the builder had not tightened the pull switch which came loose, and I’d have had to pay to just tighten a switch. Now he’s blocked me on what’s app & for me that’s concerning and very unprofessional
house convert ltd
Rating: 4.6 out of 5
Extension Builder in Harefield
We have the manpower and ability to undertake jobs small or large. With a combined 30 years experience, we are a company that distinguishes itself with its close approach to the clients and their needs. When it comes to extensions and loft conversions, we bring a unique craftsmanship and use only high-quality materials to give you the best results. From simple changes to major renovations, we have your needs covered.
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Latest review:
Extensions- 25 Sep 2019
Daniel and team did a fantastic job extending our kitchen in West London. Work including all the structural elements, installation of glazing and doors, wood floor, plastering, electrics and kitchen units. Daniel is reliable and happy to help, would definitely recommend him.
MNC Energy LTD
Rating: 5 out of 5
Extension Builder in Harefield
We have good experience of 2 years in the industry we provide refurbishment,door fittings and many more
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Latest review:
They done excellent work in my property and very quick and affordable work
Ethan ansell
Rating: 5 out of 5
Extension Builder in Harefield
Hello im Ethan, a fullyqualified bricklayer with 15 years experience of erecting brickwork. I am very proud of every job i have carried out and i build with pride. I ensure nothing less then the highest quality of work and a fully satisfied customer. I look foward to building for you whoever you are.
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Latest review:
Bricklaying- 8 May 2021
Ethan did an excellent job for us today. Very impressive brickwork. Nice friendly guy and left the place clean and tidy after finishing. Will not hesitate to use him again for future work.
Palm Real Estate Ltd
Rating: 4.9 out of 5
Extension Builder in Harefield
I'm Mohsin from Palm Construction With over 7 years of experience in the industry, we've honed our skills to perfection. Whether you're looking to renovate or enhance your home, we are here for you. We take pride in delivering exceptional results and ensuring your project is completed on time and within budget. From minor fixtures to major refurbs, we've got you. No job is too big or too small, and we've dedicated to providing personalised solutions that meet your unique needs.
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Latest review:
Polite
Perfect House Building Service Ltd
Rating: 5 out of 5
Extension Builder in Harefield
Company is open in 2015 . My experience in building and house refurbishment is 20 years . I finish building school in Poland when I spent 6 years on building side after school . In 2004 I move to England and I spend 11,5 years on building sides like self employed , 2,5 years I decide open my own ltd company . Work undertake by my company is house extension , lofts all types , full house/flats/offices refurbishment .
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Latest review:
Krzysztof has worked for me on many projects both residential and commercial. He is highly experienced across many skill sets, a master problem solver/ solution finder, trustworthy and reliable. I would recommend him as 1st choice on any project.
Nova Building LTD
Rating: 5 out of 5
Extension Builder in Harefield
I am an experienced general builder offering a wide range of construction and property improvement services. My work covers all aspects of building, from small repairs to full renovations, ensuring high-quality workmanship and attention to detail at every stage. Services include brickwork, plastering, carpentry, painting and decorating, tiling, flooring, and general maintenance. I take pride in delivering reliable, efficient, and cost-effective solutions tailored to each client’s needs. All work is carried out to a professional standard, with a strong focus on safety, cleanliness, and meeting agreed deadlines. Fully committed to customer satisfaction, I maintain clear communication throughout the project to ensure expectations are met and results are delivered to a high standard.
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Latest review:
We recently had our porch built by Nova Building LTD and we are extremely happy with the result. From the beginning, they were professional, reliable and easy to communicate with. The brickwork and finishing were done to a very high standard, and the team kept the area clean and tidy throughout the work. The porch has made a big difference to the front of our home and looks fantastic. We would definitely recommend Nova Building LTD to anyone looking for quality building work.
Aurelian
Rating: 5 out of 5
Extension Builder in Harefield
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.
Steve Howell man with a trowel builder, property maintainance ,handyman
Rating: 4.9 out of 5
Extension Builder in Harefield
Hi my name is Steve and i am a bricklayer by trade. I have done a 4 year apprenticeship in city and guilds so i am fully qualified I have 35 yrs experience I have a great sence of houmour and easy to work with, thats Steve howell man with a trowel I take on a small extension work and project manager the hole thing from start to finish Also small jobs fencing, gutter repairs, plastering etc I will also do the handyman jobs as well Hope this helps
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Latest review:
Extensions- 22 Feb 2019
I am so happy with Steve's work. He has been kind and extremely helpful in working with building regs and making sure everything was done to my speciations. A real joy to work with and has produced a fantastic bathroom extension at a reasonable price. I would employ him again any time and would encourage others to do the same. Thankyou Steve. I can't say enough about him.
vasile sandor
Rating: 5 out of 5
Extension Builder in Harefield
Bathroom fitter Company providing full bathroom installation and renovation services. Specialising in plumbing, tiling, fixture installation, and complete bathroom refurbishments. With 20 yers of experience working with Bathstore,John Lewis,Asspect.Offering high-quality workmanship, attention to detail, and reliable service from initial preparation to final finish.Liability insurance 10 mil .Free Quotation
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Latest review:
Tiling- 2 Aug 2026
Vasile refurbished my small upstairs bathroom two months ago. He replaced the tiling, re-routed pipework and installed a new toilet, radiator and sheet vinyl flooring. Re-routing the pipework (which was Vasile's idea) has made the bathroom more aesthetically pleasing and roomy. All the work was carried out to an excellent standard. Vasile was punctual and polite, answering my questions and addressing my concerns with patience.

3.9

Top rated Extension Builders

Our Extension Builders in Harefield, are rated 3.9 out of 5 based on 15 reviews from customers like you.

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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.