Extension Builders in Harrow, Greater London

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 Harrow, Greater London

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Keystone Buildworks
No reviews yet
Extension Builder in Harrow, Greater London
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.
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Rimi Construction LTD
No reviews yet
Extension Builder in Harrow, Greater London
Been on this game for more than 1 decade , We have done lots of underpinning , fundation , ground work , waterproofing , fireproofing , shuttering , Joyner’s , carpenter,etc etc - we also have done few new builds , as private house's and hotel’s , May extension / roofing and loft’s . We are a qualyti company which we cost the time that requeste to make sure we got the finish that requested . We work with patience and safe ,
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VIZ GROUP
No reviews yet
Extension Builder in Harrow, Greater London
Viz Group is the builder of choice when it comes to residential and commercial construction projects in London With over 20 years of experience and hundreds of projects, you can rest assured that our team are able to tackle any of your building needs.
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The Demo Squad Limited
No reviews yet
Extension Builder in Harrow, Greater London
The Demo Squad is a veteran-owned and operated demolition and clearance company serving homeowners and builders across Surrey, Hampshire, Berkshire and London. We specialise in clean, controlled demolition and site clearance, with a strong focus on safety, reliability, and respect for your property. Whether you’re preparing for a renovation, extension, or new build, we handle the enabling works properly so the next stage runs smoothly. Our services include: Soft strip demolition Garage and outbuilding removal Internal demolition Site and garden clearance Licensed waste and debris disposal Salvage and material reclamation where appropriate We’re fully insured, licensed waste carriers, and known for turning up when we say we will, keeping sites tidy, and communicating clearly throughout the job. We’re happy to work directly with homeowners or coordinate with builders and project managers. If you need demolition or clearance done efficiently, safely, and without hassle, we’d be happy to provide a free, no-obligation quote.
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Christopher foot
No reviews yet
Extension Builder in Harrow, Greater London
Hi there my name is Chris I have previously been working for a company doing house extensions, loft conventions, house renovations and more. Though my years working with multiple of different trade I have become skilled in multiple of different areas.
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Newstar Building Services Ltd
Rating: 4.9 out of 5
Extension Builder in Harrow, Greater London
HI my name is Bill and I run a building company. All our work is base on recommendations costumers We work all around London.
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Latest review:
Hard Flooring- 22 Oct 2025
Enea did an incredible job, and we’re beyond happy with the final result. He was very accommodating, helped us choose the right tone of varnish beforehand, and kept us updated throughout the day by sending pictures of his progress (as we were both at work). Enea is trustworthy, and even though we didn’t have the chance to meet him in person, he left the flat securely, taking care of our keys and door. We highly recommend Enea!
H M Renovations LTD
No reviews yet
Extension Builder in Harrow, Greater London
We are a professional construction and renovation team based in the UK, operating under HM Renovations Ltd. Our team includes experienced electricians, plumbers, carpenters, and builders, allowing us to handle a wide range of residential and commercial projects from start to finish. We specialise in: Full property renovations and refurbishments Shop fitting and bespoke counter installations Bathroom and kitchen installations Plumbing, electrical, and carpentry work General building and maintenance We pride ourselves on high-quality workmanship, reliable service, and clear communication throughout every project. Fully insured and committed to customer satisfaction.
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Jagdeep Singh
Rating: 5 out of 5
Extension Builder in Harrow, Greater London
Hi,contact us for any type of building work
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Latest review:
Extensions- 8 Dec 2023
I recently had the pleasure of accepting Jagdeep on a substantial renovation project. Initially, I was a bit apprehensive as there were no existing reviews to gauge his work. However, after seeing some of his previous projects, I decided to take a leap of faith - and it turned out to be the best decision I've ever made. Jagdeep's approach to our project, which started merely as a rear extension and shower room, was nothing short of exceptional. His remarkable craftsmanship and attention to detail soon convinced me and my wife to extend the scope to a full renovation. Throughout the process, Jagdeep and his team displayed an extraordinary level of skill, professionalism, hard work as well as trust (very rare these days). No task was too challenging, and his willingness to prioritise our needs and provide thoughtful advice was truly comforting. It's rare to find a builder with such dedication and expertise. Jagdeep is undoubtedly one of the best builders I have encountered. My heartfelt thanks to Jagdeep and his team for their outstanding work. Rest assured, for any future projects, he will be the first person I call. Thank you, Jagdeep, for turning our vision into reality, which more than exceeded our expectations!
BrownBricks Construction
No reviews yet
Extension Builder in Harrow, Greater London
"Welcome to Brown Bricks Constructions, your local builders with a witty touch! From painting and decorating to handyman work and everything needed within the house, we've got you covered. With our skilled craftsmen and friendly approach, we turn your house into a home. No task is too big or small for us – whether it's fixing a leaky faucet or transforming your space with a fresh coat of paint, we handle it all with precision and flair. Trust Brown Bricks Constructions for quality workmanship, attention to detail, and a touch of local charm. Let's build something wonderful together!"
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FBS LONDON LTD
New on MyBuilder
Extension Builder in Harrow, Greater London
FBS LONDON LTD are fully qualified, insured and certified team of builders. We have a wealth of experience spanning over 20 years in the building/construction industry. During this time, we have built a reputation based on quality of work, reliability and trustworthiness. Jobs undertaken and completed to the highest standards include: loft and garage conversions extensions hard scaping (paving/patios) renovations (kitchens & bathrooms) a lot of general home improvements garden works carpentry joinery and more We pride ourselves on completing jobs on time and in budget. Many customers come back to us time and time again, we can provide customer references as well as arrange viewings of previous work we have done. Contact us today for a FREE quote or advice and start your journey to a perfect home!
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Plastering/all aspects of building work
No reviews yet
Extension Builder in Harrow, Greater London
Pharaohs construction limited is a registered home improvement offering huge range of services from extension to loft conversion with highest standards.We take great pride in our reputation for superior client satisfaction. We strive to satisfy owners and consistently deliver projects on time, within budget and to a high standard of qualty Our business has always been renowned for excellence in craftsmanship and we continue that focus today.
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MP Fast Brickwork Contractors Ltd
No reviews yet
Extension Builder in Harrow, Greater London
Hi, I’m an experienced bricklayer with over 10 years in the trade. I specialise in all types of brick and block work — from garden walls and extensions to large-scale construction projects. For the last 4–5 years, I’ve also been working as a foreman/supervisor, managing teams and ensuring top quality on every job. My team and I work fast, professionally and always deliver high-quality results with great attention to detail. I take real pride in my work, and many of my customers are happy to recommend me. You can also see our projects on Instagram: @m.p.fastbricklayers
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Mok Solutions LTD
No reviews yet
Extension Builder in Harrow, Greater London
We are a Building company and have 40 yrs combined experience within our team. We partake in all Building works and hardscape garden works.
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Artur
No reviews yet
Extension Builder in Harrow, Greater London
1. **Painting** - We offer professional painting services that will give your interiors a new shine. We use high-quality paints that ensure durability and aesthetics. 2. **Plastering** - Our plastering services include both interior and exterior plasters. We use modern techniques that guarantee a smooth and durable finish. 3. **Foundations** - As a solid base for a building, foundations are a key element of every investment. We design and build them, ensuring high quality and safety. 4. **Loft conversion** - Transform your unused attic into a functional space! We carry out projects that allow for maximum use of the available space. 5. **Extensions** - Do you dream of additional space? We offer comprehensive services in the field of building extensions, adapting projects to individual customer needs. 6. **Many other services** - Our competences also include renovations, interior finishing, terrace construction and installation work. We are open to various construction challenges! Why choose us? We guarantee professionalism, punctuality and competitive prices. Our priority is customer satisfaction and the highest standard of workmanship. Contact us today to discuss your construction project!
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Peposhi LTD
No reviews yet
Extension Builder in Harrow, Greater London
Dear all, I’m a small company and I’m trying to build up and bring the very best to my client's . I have over 15 years in construction industry Thank you Bekim
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B ALI DOGJANI CONSTRUCTION LTD
No reviews yet
Extension Builder in Harrow, Greater London
I am a reliable and detail-oriented tradesperson with experience in wall and floor tiling, splashbacks, bathrooms, and kitchen projects. I take pride in delivering high-quality workmanship, ensuring every job is finished neatly, on time, and to the customer’s satisfaction. I offer honest advice, clear communication, and a tidy work environment from start to finish. Whether you need a full bathroom refurbishment, kitchen splashback, or outdoor tiling, I bring the right tools, skills, and professional attitude to every project. My goal is to provide a stress-free service and results you’ll be proud of.
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3.9

Top rated Extension Builders

Our Extension Builders in Harrow, Greater London, 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 Harrow, Greater London?

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, Greater London 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, Greater London who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in Harrow, Greater London?

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

Find extension builders in Harrow, Greater London with MyBuilder

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

Step 2: Compare different extension builders in Harrow, Greater London

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

Step 3: Hire Harrow, Greater London extension builders with confidence

After gathering all the information and quotes from your chosen home extension builders in Harrow, Greater London, 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, Greater London extension builders are ready to help. Use MyBuilder today to find the right professional for your home extension.

What to ask a Harrow, Greater London extension builder before hiring?

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

An extension builder in Harrow, Greater London 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, Greater London 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, Greater London?

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, Greater London 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, Greater London 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, Greater London

Can an extension builder in Harrow, Greater London help with planning permission?

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

Many Harrow, Greater London 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, Greater London help with materials and finishes?

Yes, most extension builders in Harrow, Greater London 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.