Extension Builders in Harefield

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4 (17 reviews)

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Some of our top rated extension builders in Harefield

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Roberts building and groundworks
No reviews yet
Extension Builder in Harefield
We take care of both domestic and commercial work and complete to a very high standard ensuring the customer is 100% satisfied
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Michael John Interiors
Rating: 5 out of 5
Extension Builder in Harefield
Hi I'm a general builder, started my working life on kitchen & interior design then also Installations, which quickly lead to building works. Taking down walls to building large extensions/loft conversions & out side works We take on any size work & can offer lots of advice & design help, having 35 years experience From kitchen installations & all types of Interior work To extensions/outside works & loft conversions.
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Latest review:
Extensions- 15 Apr 2019
Submitted quote on time and has responded to all questions and been very helpful.
Mario Services
Rating: 5 out of 5
Extension Builder in Harefield
Mario & Alex Construction LTD specialise in construction and building services, complete property refurbishment, house extensions and loft conversions. Provides unmatched customer service. Our commitment to small,hudge integrity, providing the highest value and satisfied customers, has been the ingredient that has fueled our growth from the beginning. We ensure that all our work is professionally managed so that the result is of outstanding quality, cost-effective.
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Latest review:
Bathroom Fitting- 20 Jan 2023
We highly recommend Mario & his team. They fitted a new kitchen & bathroom to a really high standard within a short, timeframe. They work hard, are friendly, professional & honest, my neighbour even commented on how considerate they were! Upon first meeting Mario we were impressed by how organised he was. He arrived on time with the description we’d posted on my builder & went through it methodically. We had A LOT of questions! He answered all of them & didn’t rush us. We received a competitive quote within a day as promised. It included everything we discussed & he quickly answered our follow up questions. We wanted an accurate idea of the cost of electrical work & Mario arranged for his electrician to come & inspect/quote before we’d appointed Mario the job. Our kitchen & bathroom is complicated, with lots of difficult angles. Damp, unlevel floor, unlevel windows, a low ceiling were uncovered in the bathroom. Mario did well to identify solutions, giving us expert advice. Pipes were neatly chased into the wall. Underfloor heating & LVT, tiling, grouting & painting all done to a very professional finish. He kept us informed of progress, checked our preferences & was patient when we had supply delays, finding ways to ensure the job finished on time enabling us to move from our temporary accommodation back home in time for Christmas. He promptly fixed some minor issues after the job finished. We highly recommend Mario & would use him again.
Spartan Homes ltd
No reviews yet
Extension Builder in Harefield
Hi my names Leo and I am a multi skilled Tradesmen with other 35 years experience , city and guilds registered. I specialise in kitchens and bathrooms Plumbing and Electrics Garden Fencing and decking Garage conversions and extensions Flat roofs Any household DIY Painting and Decorating I am a perfectionist and take pride in my work!
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Zlatko Petreski
No reviews yet
Extension Builder in Harefield
All aspect of building constriction.
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L.Pepper Design & Build,
No reviews yet
Extension Builder in Harefield
L.Pepper Design & Build is a small, dedicated building company specialising in high-quality residential renovations, extensions, loft conversions and bespoke new builds. We combine thoughtful design with skilled craftsmanship to bring your vision to life, ensuring every project is completed with attention to detail and clear communication throughout. From initial concepts to the final finish, we work closely with homeowners to create functional, beautiful spaces that add lasting value to your property. At L.Pepper Design & Build, we pride ourselves on reliability, transparency, and a commitment to delivering projects on time and within budget.
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Rm roofing and building services ltd
No reviews yet
Extension Builder in Harefield
We bring dreams to reality. We always offer a high standard from consultation to completion. We have highly skilled tradesman who are always willing to go the extra step to make our customers happy.
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Bricklayer
New on MyBuilder
Extension Builder in Harefield
Over 7 years experience, quality guaranteed
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Groundwork and Landscaping Services Ltd
Rating: 5 out of 5
Extension Builder in Harefield
Local professional builders with a vast experience installing fencing, paving and general groundwork, we offer competitive prices and good quality finish. We specialise in all aspects of gardening, landscaping and groundwork, we strive to make each garden unique and listen to our clients' individual wishes and requirements. We strive to create a space you can really enjoy.
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Latest review:
Landscaping- 25 Mar 2022
Fatmir was very professional and delivered a high standard of work at a fair price. Reliable, on time and listened to what I wanted. He communicated throughout the job. I am delighted with my fencing and patio he provided. Very trust worthy professional who values is customer and work. Highly recommend and have passed his contact to my neighbour and friend. Thanks Fatmir
CARVE Engineering Co Ltd
Rating: 1 out of 5
Extension Builder in Harefield
We undertake large and small construction rebuild projects, house extension and loft conversion, shop design and decoration, home design and decoration, customized furniture. We can provide professional drawing and floor plan as well.
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Latest review:
Extensions- 19 Sep 2022
Man Ho or Calvin Ho' or Man Fu Ho, who owns Carve Engineering Co. Ltd. He also has a Hong Kong branch carve-eng.com . I didn't know he subcontracted the whole project to a group of Chinese mainlanders who couldn't speak English. And he asked a British Gas gas engineer to sign off the plumbing work. I obtained the planning in December 2021. The work started on 31/1/2022 and almost finished now 19/9/2022. It supposed to end in three months time as they promised. It's only a single storey side extension and shouldn't be left unfinished with pipes broke. The workers only came to work once a week and sometimes the work stopped for a month or so. The price included the purchase of a boiler and installation. But there's no timer or thermostat and I was asked to purchase these and install them with extra cost. The workers' van broke down five times and they didn't turn up for five different days. There's no windowsill and they called this a standard window people would install. The exterior wall was painted inconsistent to our original wall and I had to argue to get them pebbledash and repainted. They left the fences on our neighbours. The pipes are still leaking. Shower leaked for 3 months. They even charged extra for the electricity sockets they installed in our kitchen. They took down the mains water supply switch and never install it back so our house has no in house mains water stop valve! They didn't hoover and didn't have a hoover. Avoid this company!
Euro Elite Projects Ltd
No reviews yet
Extension Builder in Harefield
We are Euro Elite Projects, a London-based construction company established in 2024, we stand out for our experience, expertise, and commitment to excellence. Our seasoned team of contractors, with over 20 years in the industry, brings unparalleled skill to every project. From quality craftsmanship to great customer reviews, we prioritize attention to detail and fresh perspectives. Trust us as your partner in building dreams.Choose us for top-tier construction services that turn your vision into reality! Always here for you! Euro Elite Projects
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Diem brickwork and construction
No reviews yet
Extension Builder in Harefield
Hi I’m dean from diem brickwork and construction. At diem brickwork and construction we aim to provide the best quality work and make the process stress free we are fully insured with professional and liability insurance and take our responsibility very serious to leave you happy every time we have been trading for 25 years we have lots of valuable customers that would provide reviews
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Sova Services Ltd
No reviews yet
Extension Builder in Harefield
We are a company with huge experience in interior and exterior refurbish , extensions , loft conversions !
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IMPERIUM CONSTRUCTION
No reviews yet
Extension Builder in Harefield
IMPERIUM CONSTRUCTION is a family run business, we started operations in January 2018, predominantly in general builders work, maintenance and refurbishment, then moving into masonry, metsec& drylining loft/garage conversion, and extensions. Lately, our business has expanded into traditional and insulated rendering, plastering, painting, decorations, and gardening.
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a-z renovations and construction
No reviews yet
Extension Builder in Harefield
My name is Avni, Our company is called 'a-z renovations & construction' we take all different kind of projects whether they are small or big. all of our jobs are mainly recommended. our jobs are: Extensions, loft conversions, mezzanine floors, plastering and plumbing, wall & floor tiling, painting and decorating, kitchen and bathroom fitting, carpentry, patio and garden fixing. we cover London and home counties.
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ERIC GROUP LTD
Rating: 5 out of 5
Extension Builder in Harefield
Eric Group Ltd has been trading for over 10 years and has completed numerous refurbishment and fit-out projects. We offer free survey and estimates and free specialist advice. If you want a new kitchen, a new bathroom, a house extension or a full house refurb, get in touch for a chat.
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Latest review:
The Job was to extend the rear of the house on the ground floor, open up the kitchen and reception room into one open plan living area, to refresh the rest of the house which included new plaster skim, doors and frames and to fit new bathrooms and kitchen as well as an rewire on the whole house and the construction of a retaining wall in the garden to accommodate the extension. Florins team were excellent from start to finish, the whole project was completed in record time to a very high standard. The 10 weeks turnaround was incredible, we were very happy that Florin was always here at the property or on the end of the phone throughout the process, his professional advice and smart ideas made for a smooth transition from room to room. The team were very hard working, polite and knowledgeable, these guys worked very hard and very quickly which was amazing to see and I was very grateful we were able to move into the property earlier than planned which even saved us money on the temporary accommodation we had! Can’t thank you enough Florin, any small issues we had were dealt with quickly and smoothly, I love the house, the level of work and would 100% use Florin and his team on my next project!

Top rated Extension Builders

Our Extension Builders in Harefield, are rated 4 out of 5 based on 17 reviews from customers like you.

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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.