Extension Builders in Harrow

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 3.8 (18 reviews)

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Some of our top rated extension builders in Harrow

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Somnath
No reviews yet
Extension Builder in Harrow
Your trusted specialists for all demolition, renovation, and new build projects. Whether you’re looking to safely demolish a structure, renovate your property, or construct a brand-new home, we provide expert services with safety, efficiency, and quality workmanship at the forefront. We handle every project with care, ensuring compliance with all regulations and environmental standards, leaving your site safe, clean, and ready for the next stage.
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GRD HOME IMPROVMENTS LTD
New on MyBuilder
Extension Builder in Harrow
Our company is a private limited company, we have over 5 years of experiance in all building works. We do all building works from loft convertion to plastering, kitchens and bedrooms, renovations and electrial etc. We have done many jobs from big to small, we have brilliant customer job reviews for all jobs done and have never let any customers down. Before starting any jobs we always sign a contract and make everything clear with the customer about the work that needs to be done and what we will provide and what the customer will have to provide. We are willing to travel 30/40 miles to work from our destination.
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LTDinchev
Rating: 5 out of 5
Extension Builder in Harrow
Every little help
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Latest review:
Carpentry- 10 Aug 2023
you will see I ask for experts in my job posting because my desired outcome of this job was quiet floor as you walk across. I hired LTDinchev and the 2 gentlemen were helpful, pleasant and friendly. The job was completed for the price quoted and in the time specified. my only disappointment is after the job was completed I still had SOME of the same floor noises. so although they work hard on my subfloor I did not get 100% my desired outcome.
Ed’s loft conversions Ltd
Rating: 5 out of 5
Extension Builder in Harrow
We specialise in loft conversions, Extension to a complete house refurbishment.
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Latest review:
I engaged Edi to work on a full renovation and refurbishment of a 4 bedroom detached house with front and back gardens on Blackheath’s Cator Estate. Edi did an extensive amount of work, including stripping out; plumbing; plastering; windows installation; carpentry; and decoration. In addition, after commencing the property work, once the scaffold had been erected, following sensible advice, Edi and his team replaced the roof and fully insulated the attic; fitted additional electric points; rebuilt the garden patio; and replaced the flooring throughout, in addition to other important jobs including re rendering and pointing of chimneys, building new wardrobes in the main bedrooms; and upgrading the radiators. A new kitchen, and two new bathrooms have been fitted. The kitchen redesign meant knocking through a wall with the lounge to create a larger space. Edi is a highly skilled craftsman, who thinks creatively as he works to make best use of the space, including shelf fittings, and additional lighting for example. He has built some beautiful wardrobes, and the internal decorations have brightened up what was previously a rather shabby looking house. In addition to the above, I wish to commend Edi for his professionalism, courtesy, and passion for doing the best work possible. On all the site visits I attended, and every time I spoke with him on the phone, it was striking how much he cared about the work that he was doing, his desire to ensure that the house would look the best. I always left site visits with the feeling that he cared so much about the house that he could be safely relied on to give the best advice to enable us to make the right decisions. I also noticed that Edi and his team would take the upmost care to keep the property safe, tidy and in good shape throughout the project. He can be fully trusted to look after any site he works on. He is intelligent and careful when it comes to safety and security. It has been a pleasure for Edi and his team to work with us over a period of around 6 months, and he did so much to reduce the stress of a significant project so that we could always rely on him to work methodically, patiently and sensibly, and to make best use of the resources available. His pleasantness shines through, and everyone I know who has spoken to him has always provided me with the most positive feedback I have no hesitation in recommending Edi to anyone who wishes to engage him for future projects, and is most deserving of the good words that I and others that work with him have to say about him.
Prela LtD
No reviews yet
Extension Builder in Harrow
I have strong experience in gardening, landscaping, and house repairs. I am confident in all aspects of the work I do, including maintenance, renovation, and practical hands-on tasks. I am dedicated, hardworking, and always focused on delivering high-quality results. I take pride in my work, learn quickly, and adapt easily to different types of jobs. I am reliable, motivated, and committed to completing every task safely, professionally, and on time
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Sjs home and garden renovations
No reviews yet
Extension Builder in Harrow
I'm a multi trades man very reliable, honest and hard working jobs include First and second fix electrics Basic plumbing Carpentry Landscaping and design Painting decorating Building Il put my hand to any job and always have pride in my work excellent attention to details if i wouldn't except it in my own home it will not be done in yours
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QUOTRIX CONTRACTORS & ENGINEERS LTD
Rating: 5 out of 5
Extension Builder in Harrow
1. Design and Planning; 2. Development of residential & commercial buildings; 3. Refurbishment & Renovation of domestic building projects, and 4. Any other types of building works including extensions and conversions.
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Latest review:
Kitchen Fitting- 4 Aug 2020
Quotrix contractors did a fantastic job of kitchen refurbishment. Great friendly service by all of the team, from the sales through to installation. Brilliant job, all round!
Fine Deco Group Limited
Rating: 5 out of 5
Extension Builder in Harrow
Fine Deco Builders was established a decade ago on the pillars of excellence, integrity, and innovation. We bring your vision to life with our extensive experience in the construction industry, offering a wide array of services including new builds, garage conversions, loft conversions, renovations, and extensions. Additionally, our sister company specialises in tiles, flooring & carpets, offering exclusive discounts. Our mobile showroom equipped with thousands of samples, brings the selection process to your home, making it easy and stress-free.
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Latest review:
I would highly recommend Fine decor builder whether it’s new build, renovation or extension . His team's expertise and attention to detail transformed our 1955 Victorian build into modern functional and beautifully area. Their professionalism and attention to detail were evident throughout the process. We were able to celebrate in our new space with family and friends even better than we pictured.
FALCONS CONSTRUCTION LTD
Rating: 5 out of 5
Extension Builder in Harrow
Falcons Construction is privately owned business that has started from small beginnings to that of an Innovative, Reliable and Flexible Contractor. We always offers a Professional and Efficient service. Our aim is Client satisfaction, Quality work with in the budget. We always respond promptly.
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Latest review:
Extensions- 6 Jun 2020
Very pleased. Bilal is very knowledgeable, helpful and punctual. The job was completed quickly and efficiently. The area was cleaned and left in a acceptable state. Will definitely use this company again. Thanks
SPS GAS SERVICES LTD
No reviews yet
Extension Builder in Harrow
At SPS Design and Build, we don’t just construct buildings — we bring your vision to life with skill, precision, and professionalism. As a trusted build company, we manage projects of all sizes, from complex renovations to full-scale new builds. What sets us apart is our commitment to quality, safety, and client satisfaction. We are fully Electrically Certified and Gas Safe Registered, ensuring that all electrical and gas work is completed to the highest industry standards. Whether you're planning a new home, a commercial space, or a full property transformation, SPS Design and Build delivers reliable, end-to-end construction services with a focus on craftsmanship, compliance, and lasting results. Built right. Built safe. Built to last.
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k+c studio
Rating: 5 out of 5
Extension Builder in Harrow
udrtzurtszesrtz
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Latest review:
CAD / Drawings- 5 Dec 2021
So far so good very helpful and would use her again very professional
kensington Construction & Renovation Ltd
No reviews yet
Extension Builder in Harrow
Welcome to Kensington Construction & Renovation Ltd, where we bring new life to old spaces and craft new ones with precision and care. Our expertise goes beyond refurbishments and restorations. We are adept at bespoke furniture design,build and installs, demolition, decorating and all other building trades. When it comes to interior renovations, we leave no stone unturned. From luxury bathrooms to kitchens, our team can transform your property and we approach each project with the care and dedication it deserves. Bespoke carpentry is where our passion meets precision. Our master craftsmen create custom pieces that elevate interiors, from stunning cabinetry to intricate bespoke items. Every detail is meticulously crafted to reflect the unique personality and style of our clients and their ideas. In addition to residential services, we offer comprehensive commercial fit-out solutions. Whether it's creating inspiring workspaces or welcoming retail environments, we tailor our services to meet the specific needs and objectives of each client, delivering results that exceed expectations. At KCR, we pride ourselves on our commitment to quality, craftsmanship, and client satisfaction. From concept to completion, we are dedicated to delivering excellence in every project we undertake. Let us turn your vision into reality and transform your space into something extraordinary. www.kcr.ltd
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Sandhu roofing ltd
No reviews yet
Extension Builder in Harrow
Dear customer, We are Sandhu roofing , a full-service roofing firm dedicated to providing our clients with proper satisfaction and good project services
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evergrand
No reviews yet
Extension Builder in Harrow
We are a reliable and hardworking building team specialising in all aspects of residential construction and renovation. Our services include home extensions, loft conversions, full property refurbishments, interior renovations, roofing works, carpentry, plastering, flooring, painting & decorating, kitchen and bathroom installations, and general building work. We take pride in delivering high quality workmanship, honest communication, and completing every project to a professional standard. Whether it’s a small renovation or a full house transformation, we are committed to providing efficient, clean and reliable service from start to finish. Customer satisfaction is always our priority.
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NESIMI CONSTRUCTION LTD
Rating: 5 out of 5
Extension Builder in Harrow
Nesimi construction ltd With over 18 years of experience, we specialise in bricklaying, driveways, and paving. We carry out all types of work including garden walls, patios, extensions, repairs, and general building. We pride ourselves on high-quality workmanship, reliability, and attention to detail. All jobs are completed to a high standard, on time, and at competitive prices. Friendly, honest, and professional service from start to finish.
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Latest review:
When Mr Nesimi came to undertake a pre-assessment for my front wall, he came across very professional and genuine and very honest about the work needed doing. He even suggested some changes to the work to reduce cost. The quote he gave me for the job was very reasonable and he was able to slot in my job within a week and arrive sharp on time at 8am and got on to the job straight away as I had a busy day at work for me to attend to. I notice that right from the start he was very clean and meticulous with the work and his job was of a very high quality ( compared to a job I had done by another builder 9 months ago). My neighbours also noticed this difference and were praising Mr Nesimi’s work. I would definitely recommend Mr Nesimi for any construction work as I felt he was very professional, reliable and honest and most of all the work was of high quality. I will be certainly calling him for my next job, most likely the driveway resurfacing and the attic conversion within the next year.
DSB Construction ltd
No reviews yet
Extension Builder in Harrow
DSB Construction is a multi-skilled company operating in construction, residential housing, refurbishments and construction maintenance, offering services to a diverse range of clients in the UK. With the help of our partners, we can leverage ideas, skills and entrepreneurial flair to deliver top-quality work in all sectors. We design, build, restore and refurbish buildings throughout the United Kingdom. We specialize in developing residential property specifically made for modern living.
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3.8

Top rated Extension Builders

Our Extension Builders in Harrow, are rated 3.8 out of 5 based on 18 reviews from customers like you.

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What types of services are offered by local extension builders in Harrow?

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

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

What are the hourly rates of extension builders in Harrow?

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

Find extension builders in Harrow with MyBuilder

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

Step 2: Compare different extension builders in Harrow

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

Step 3: Hire Harrow extension builders with confidence

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

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

What to ask a Harrow extension builder before hiring?

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

An extension builder in Harrow 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 Harrow 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 Harrow?

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 Harrow 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 Harrow 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 Harrow

Can an extension builder in Harrow help with planning permission?

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

Many Harrow 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 Harrow help with materials and finishes?

Yes, most extension builders in Harrow 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.