Extension Builders in North London

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4 (20 reviews)

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Some of our top rated extension builders in North London

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Walsh bricklaying ltd
No reviews yet
Extension Builder in North London
I’m a bricklayer for nearly 20years,I do garden walls,extensions right up to houses and more..I take all jobs serious and am willing to do most no job to big or small it’s all work,,willing to help and advise 👍
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Gazmend
No reviews yet
Extension Builder in North London
Hi my name is Gaz, I do extensions from start to finish, loft conversion, Garden refurbishment and patio, Best prices around guaranteed Don’t hesitate to give me a call
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Rowan groundwork
No reviews yet
Extension Builder in North London
Here to help
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High tech process Ltd
No reviews yet
Extension Builder in North London
I am an qualified electrician with 35 years experience. Commercial and domestic, Three phase and single phase. Able to build complete industrial control panel conventional and PLC control. Domestic complete rewinding and alterations. Latest level 3 BS 7671:2018
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Magna Build
No reviews yet
Extension Builder in North London
Specialise in carpentry work. As well as extensions and new builds - Erect stud walls - Kitchens - Hanging doors - Flat and pitched roofs - Skirting & Architrave - Flooring - Joists - Shelves - Cupboards - Stairs - Cladding
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Vista Construction (London) Limited
No reviews yet
Extension Builder in North London
We are a big company and we have long experience on all buildings work. We have a qualified people like electriction, plumber, carpenter, bricks ,tiler, plaster , painter etc ..
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Ows construction ltd
No reviews yet
Extension Builder in North London
OWS Construction specialises in a broad range of groundwork and civil engineering services. We handle essential preparatory and foundational tasks for various construction projects, ensuring infrastructure is properly laid out before the main build takes place. Their scope includes: Car parks: Constructing and preparing parking areas. Curbing: Installing curbs and edges for roads or pathways. Drainage: Designing and installing systems for effective water drainage. Utilities: Installing essential services like water, gas, and electricity lines. Concrete: Pouring and setting concrete for foundations, pavements, or other structures. Roads and sewers: Constructing and maintaining road networks and sewer systems. Footings and formwork: Laying the Laying the foundational supports and molds for concrete pours. Steelwork: Installing steel reinforcements for structures. Shuttering: Creating temporary molds for poured concrete. General developer work: Other tasks required by developers to prepare sites for building projects.
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Roberts building and groundworks
No reviews yet
Extension Builder in North London
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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Above & Beyond
No reviews yet
Extension Builder in North London
My work partner Paul and I have 40 years of combined building knowledge and experience. I specialise in extensions and building work, while Paul specialises in carpentry and internal works. Together we have the skills to complete an entire project start to finish. We concentrate on extensions and renovations however we have completed many projects both large and small. We are able to provide our website details as well as customer testimonies. Visits to previous projects can be arranged.
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Kingscroft Building Services LTD
No reviews yet
Extension Builder in North London
Kingscroft Building Services LTD is a construction company with over 25years experience. We specialise in all aspects of building work including plastering, conservatory's, roofing and extensions. Kingscroft also carry out underpinning, double glazing, bathroom and kitchen fitting. Electrical, heating and plumbing services are also available. We currently cover Hertfordshire, Bedfordshire, Buckinghamshire, and London areas.
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Jackson construction
No reviews yet
Extension Builder in North London
I’m a general building company we do complete extensions, kitchens, bathrooms and carpentry, Patios and driveways
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Gap masonry
No reviews yet
Extension Builder in North London
Any type of brickwork and stone work. Extentions. Fences and so on
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5m2 limited
No reviews yet
Extension Builder in North London
We are a professional building company covering all aspects of construction - residential and commercial. We differ from other builders as we help our clients with their interior design as we realise this is as important as the build itself as this creates the finished product. High quality workmanship and customer satisfaction are of the upmost importance. Our team take great pride in all they do and work together seamlessly to provide top quality build.
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R&J Quality & Decorating Ltd
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Extension Builder in North London
R&J Quality & Decorating Ltd is a Basildon‑based home improvement and decorating business established in 2019, offering a wide range of services including house refurbishment, decoration, plumbing, electrical work, bathroom tiling and general renovations. The company focuses on quality workmanship and customer satisfaction, aiming to transform living spaces with meticulous attention to detail and a comprehensive approach to home improvement. �
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FABS Complete Building Service
No reviews yet
Extension Builder in North London
FABS provides the complete building service for your property. Newly formed 2017. No stranger to the industry as myself & my team have many years experience between us. As a new building firm it is more important than ever that I provide a good service & high standard of work in order to move forward & obtain new custom & build a reputation in a business that I have passion for. I also offer long guarantees on all works carried out in confidence from my solid workmanship & high standards.
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Rumahn International
No reviews yet
Extension Builder in North London
With over 35 years of experience in the building industry, we offer a complete A–Z service across all trades — from builders, carpenters, fitters, and bricklayers to electricians, plumbers, and more. Whether it’s a minor repair or a major development project, we provide trusted professionals for every job. At Mazmo, we pride ourselves on delivering exceptional service, reliability, and peace of mind. Our “one-stop shop” approach means you don’t need to look elsewhere — we handle everything under one roof. Quality workmanship. Proven expertise. All in one place.
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Top rated Extension Builders

Our Extension Builders in North London, are rated 4 out of 5 based on 20 reviews from customers like you.

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What types of services are offered by local extension builders in North 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 North 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 North London who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in North London?

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

Find extension builders in North London with MyBuilder

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

Step 2: Compare different extension builders in North London

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

Step 3: Hire North London extension builders with confidence

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

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

What to ask a North London extension builder before hiring?

Before hiring an extension builder in North London or extension building company in North 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 North London?

An extension builder in North 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 North 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 North 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 North 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 North 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 North London

Can an extension builder in North London help with planning permission?

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

Many North 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 North London help with materials and finishes?

Yes, most extension builders in North 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.