Extension builders in Harrow

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.5 (15 reviews)

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Some of our top rated extension builders in Harrow

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PB
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Extension Builder in Harrow
Sole trader
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Taiz Builders
No reviews yet
Extension Builder in Harrow
**🔨🏡 “Your Dream Home, Our Expert Hands!” 🏡🔨** Looking for top-notch craftsmanship that’ll make your home the envy of the neighborhood? You’ve come to the right place! 💪✨ we don’t just build – we **create magic**! From stunning bathrooms that feel like **luxury spas** 🛁 to flawless tiling, plumbing, and renovations that’ll make your jaw drop, we bring **passion, precision, and a whole lot of elbow grease** to every job. ✅ **Reliable & Punctual** – We show up on time, every time! ✅ **Top-Quality Work** – Because you deserve nothing but the best! ✅ **No Mess, No Stress** – We leave your space **sparkling clean**! ✅ **Affordable Prices** – Luxury look without the luxury price tag! Why settle for **ordinary** when you can have **extraordinary**? Call us today, and let’s turn your vision into **reality**! 🔧✨
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King general builders
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Extension Builder in Harrow
We undertake all sort of general building works. Such as extension, renovation, loft convention, bathroom fitting, kitchen fitting and more.
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DBMP LTD
Rating: 5 out of 5
Extension Builder in Harrow
Our focus is to provide customers with expertise, quality workmanship, and a high level of communication throughout the process. We pride ourselves to offer a high level of customer satisfaction, this has been our main driving force over the years. We are fully insured.
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Latest review:
Insulation- 28 Feb 2023
A Great British company who I will call first for all future work. I have multiple properties and seen many traders. Workmen never give compliments to others but two of my regulars were there and both told me his work/team were very good. DBMP treat the work like it is their own property. Good quality work, neat, thoughtful of other workmen/tenants, took all the rubbish away. No mean feat as he replaced skirting & floorboards, installed rock wool and rubber mats, re-fitted carpets, painted woodwork and moved furniture in & out; all while I had tenants in the house. This site is a gamble but I highly recommend this team.
ZSM Design and Build Limited
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Extension Builder in Harrow
ZSM Design & Build Ltd is a reputable London based construction company; providing quality assured services for commercial and domestic projects. We have developed and expanded, from taking on small local jobs to managing high-end extensions, loft and basement conversions, refurbishments, and new-build projects across London.Our team delivers quality services of the highest standard and brings passion into every little task they carry out.
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Lubas lubomir
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Extension Builder in Harrow
Builder multi trader
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Joseph
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Extension Builder in Harrow
I do masonry work of the highest quality and at a fair price.
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Jamil
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Extension Builder in Harrow
Hi my name is Jamil saleh I am a painter working at ANQ Build and design I have over 2 years experience.
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manibuilder
Rating: 5 out of 5
Extension Builder in Harrow
Mani construction ltd is an established professional building services based in london. we have over 10 years experience in total in building trade,we can take the guesswork out of any building problem and will recommend the best solution based on your requirements. the quality of work will never drop regardless of the size of complexity of the job in hand.
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Latest review:
Plastering- 13 Jun 2020
Andi and his team were amazing. They removed the existing plasterboard ceiling and replaced it then plastered the walls and ceiling. His price was very reasonable and job was done to a very high standard. His team were very friendly and their work was clean. Andi even went out his way to help me pick up a few heavy items from shops and load it in his van. Cannot fault his work and finished work on the time scale given. Recommend to all. Thanks to Andi and his team for giving my house a fresh look.
BLUELIME CONVERSIONS LTD
Rating: 4.7 out of 5
Extension Builder in Harrow
Bluelime is an established planning, design and construction company providing professional property services across London and the surrounding areas. Established in 2007, we have nearly two decades of experience helping homeowners successfully extend, renovate and transform their properties. Our services include architectural design, planning applications, interior design, structural engineering, building regulations, project management and construction. Whether you require assistance with one individual stage or a complete design-and-build service, we provide honest advice, creative solutions and a clear, professionally managed approach from the initial consultation through to completion. We have a strong track record of planning approvals and successfully completed projects. We have also been active on MyBuilder since 2012 and hold a 4.7 out of 5 customer rating, reflecting our long-standing commitment to quality, reliability and customer service. We offer a free initial consultation to discuss your property, understand your requirements and advise on the best way to move your project forward.
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Latest review:
Extensions- 8 Oct 2018
Alton and his team at Bluelime have been incredibly helpful and enthusiastic throughout our design and planning process. From the start, Alton took his time to understand our needs and propose several cost-effective ways to improve my home and create more space for my growing family. The design process was completed efficiently and submitted for planning permission, which was granted without a problem. Since then, his team have continued to be helpful and communicative despite my need to delay to the building works due to unfortunate complications with my freeholder.
Downtown Builders
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Extension Builder in Harrow
Welcome to Downtown Builders, a small family-run business between 4 brothers who was taught by there grandfather with over 15 years of experience in the construction industry. Our team specializes in brickwork, and extension building, providing high-quality services to our clients across the region. We take pride in delivering exceptional craftsmanship and personalized service to every project we undertake. Whether you are looking to build a new extension to your home or in need of repointing a new garden wall a pizza oven bbq for the summer anything you need our team has the expertise and dedication to meet your needs. With a focus on attention to detail and customer satisfaction, we strive to exceed our clients' expectations on every job. From concept to completion, you can trust Downtown Builders to bring your vision to life. Contact us today to learn more about our services and how we can help you with your construction needs. Thank you for considering Downtown Builders for your next project.
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Griffin Carpentry
Rating: 5 out of 5
Extension Builder in Harrow
All aspects of carpentry, joinery and General building work. Been doing so for over 10 years With many happy customers.My main goal is to have complete customer satisfaction. I have always gained my work from recommendation.
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Latest review:
Carpentry- 11 Jun 2020
Very satisfied with my service not only helpful and friendly but was also punctual and ensured the job was done efficiently but never rushed , would 100% recommend!
Plastering and Rendering
Rating: 5 out of 5
Extension Builder in Harrow
plasterering and Renderering specialist, K-rend - silicone render - insulations, EWI system, Micro cement. drylining, and full refurbishment. Over 20 years experience.
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Latest review:
Plastering- 7 Aug 2023
Festim was efficient, punctual and did a very nice job rendering my wall. Highly recommended.
Kiseld
No reviews yet
Extension Builder in Harrow
Hi, i am a solo trader with 5 years experience in construction, I have a very good knowledge on everything that includes extensions, roofing, full flat refurbishment and good knowledge on other fields too, i looking forward to work for you.
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B&CE CONSTRUCTION LTD
Rating: 4.9 out of 5
Extension Builder in Harrow
I am versatile carpenter with a background in residential, commercial, and municipal construction and remodeling. With a strong foundation in carpentry and woodworking, I have expertise in framing, trim, windows, doors, and siding. I possess in-depth knowledge of the construction process, from material selection and techniques to tools and equipment.
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Latest review:
Carpentry- 14 Apr 2026
Great
Lezha Building Ltd
Rating: 4.9 out of 5
Extension Builder in Harrow
LEZHA BUILDING LTD Hello my name is Astrit. I’m the Director of the company We have a lot of experience in different trade so my business started in Italy but from 2015 we are based in london do not hesitate to contact no matter small or large work, we will reach you wherever you are.Thanks 🙏
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Latest review:
Tiling- 10 May 2019
As per the previous reviewer I don't usually hire tradesmen when there is only limited feedback, but given the glowing report I took the risk. And it proved to be a great decision. Astrit was great - clear communication, arrived when he said he would, sought our opinions on the key decisions and gave some great advice, before ultimately doing a great job for a reasonable price. A pleasure to deal with and will hire again for any future tiling work. Thanks Astrit.

4.5

Top rated Extension Builders

Our Extension Builders in Harrow, are rated 4.5 out of 5 based on 15 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 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.