Extension builders in North London

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.1 (17 reviews)

Easily find verified North London Extension Builders. Just post your job to get quotes from MyBuilder's Extension Builders in North London.

Select a service

How it works

Post your job for free

Tell us about your job, and we’ll alert suitable tradespeople in your area. It’s simple and free.

Tradespeople respond

Once your job is posted, you’ll get responses from interested tradespeople through the website.

Review profiles and choose

Browse profiles, work history, and feedback, then choose who you wish to share your details with.

Some of our top rated extension builders in North London

3637 Results

Sort by:

Peter The Builder
Rating: 5 out of 5
Extension Builder in North London
Hello. My name is Peter. I am a builder based in Slough. I used to run my own business back in Poland for 10 years. I do all sorts of work like painting, decorating, tiling, flooring, kitchens, bathrooms, plastering, bricklaying, driveways, gardening, fencing, paving and patio slabs , turfing . I am respectful and keen to get the job done. Thank you so much for your time , Kind regards.
Get in touch
Latest review:
Fencing- 9 Jun 2026
Recommended - competitive price and completed as agreed.
O BEIRUT LIMITED
No reviews yet
Extension Builder in North London
Loft conversion, Extensions, kitchens,bathrooms and decorating
Get in touch
Stone building services
New on MyBuilder
Extension Builder in North London
Skilled in all forms of brick and block laying. From garden walls to new build houses. Also do all forms of groundwork, drainage. Alterations,steels etc. Patios,driveways, fencing and landscaping.
Get in touch
Galaxy Stones Ltd
No reviews yet
Extension Builder in North London
We are a family business, with over 45 years in the industry whom incorporate all kinds of works consisting of: construction and development. We cover all corners from A-Z: Architectural, Civil Engineering, Conversions, Extensions, Painting & Decorating and many more. All trades offered come with appropriate certification and qualifications i.e: NIC, Gas Safety Registered etc. To get a FREE quotation please do not hesitate to contact us and one of our surveyors will come on site to meet you.
Get in touch
Direct response Building Maintenance Ltd
Rating: 5 out of 5
Extension Builder in North London
Direct Response Building Maintenance Ltd. is a well established construction company with over 15 years’ experience. Specialising in the public and private sector, Direct Response Building Maintenance Ltd. strives to form close working relationships with clients and industry professionals to provide a full service that reflects attention to detail and quality, to ensure we are the perfect solution for all your project needs.
Get in touch
Latest review:
Extension and reconfiguration of kitchen/dining/family room
Skylon Construction Limited
No reviews yet
Extension Builder in North London
Skylon Construction Ltd. successfully delivers projects in mixture of construction, renovation and refurbishment services to individual clients, as well as to other companies. We pride ourselves on an ability to deliver on-schedule without ever compromising our outstanding level of quality. We aim for completing on schedule and believe in zero snaggings and zero incidents policy.
Get in touch
TJ Elite Building Services LTD
Rating: 5 out of 5
Extension Builder in North London
We have a team of qualified builders, electricians, plumbers, roofers to mention a few covering all aspects the building services we offer. Accumulating over 10 years of experience, covering all requirements of our customers, we aim to deliver a high quality service for your requirements We can provide all aspects of job to be covered from start to finish, from drawing plans, approval to the high quality finish of the job.
Get in touch
Latest review:
Diligent, professional and finished job to a high standard. Only needed flooring done in all rooms but after seeing the quality of work, had further work carried out in gardens front and back. Have had no issues since and hes the one family goes to for any jobs that need doing, as know work gets done and we can trust that it will be of high standard.
A&s builders
No reviews yet
Extension Builder in North London
Greater London January 2000 to December 2023 20+ years self-employed experience in the construction trades which include the following: Central heating system Installed combo boiler Double story side and rear extensions Loft conversion Conversion of flats Installing new kitchens and bathrooms Drives and The above is the experience I have gained working on both my own and clients projects. My clients have all been left very satisfied and were repeat customers
Get in touch
Urban Viking Construction Ltd
No reviews yet
Extension Builder in North London
Hi, my name is Martin. I have more than 15 years of experience with kitchen fitting, carpentry and joinery also owning a construction company for 9 years specialised in Loft Conversions and Extensions. Would be pleasure to complete your project to the highest standards.
Get in touch
DRYPSIAK
No reviews yet
Extension Builder in North London
Hi! My name is Viktor. My team and I are professional carpenters with over 7 years of experience in construction. We have received many great reviews from our customers. We specialize in both first and second fix carpentry, as well as any kind of woodwork. We take pride in delivering high-quality craftsmanship, always meeting deadlines and ensuring customer satisfaction. Whether it’s framing, flooring, doors, windows, or custom woodwork, we approach every project with precision and attention to detail. No job is too big or too small — we’re ready to help bring your vision to life.
Get in touch
ZBRUCH TEAM LIMITED
No reviews yet
Extension Builder in North London
We are doing all types of dry lining jobs: Metal stud partitions, metal ceiling, grid ceilings, all kinds of plaster-boarding, tacking and dot&dab, insulation, loft insulation, plastering and tape and joint, loft conversion and any type house extension, We can supply all materials as well Also we can do transportation job,if people are moving in and out. Please be in touch with us and we will deal with prices Kind regards ZBRUCH TEAM
Get in touch
Brick & Block work
No reviews yet
Extension Builder in North London
We are specialist in Brick & Block works and all building work undertaken With the experience of more than 20+years
Get in touch
PCG CONSTRUCTION LTD
No reviews yet
Extension Builder in North London
We are a family bussines over 20 years of experience in Roofs,Loft Conversion and Extension. We pride ourselves on our honest quoting process and providing a good finish that matches the highest standard to suit the clients buget.
Get in touch
Orbital construction limited
Rating: 1 out of 5
Extension Builder in North London
We a family run business and have been in the building business for 38 years . Our ethos is treat every project as it is our own and have pride in completing a scheme that satisfies all involved.
Get in touch
Latest review:
Groundwork & Foundations- 10 Feb 2026
I Have arranged a site visit with ORBITAL CONSTRUCTION LIMITED they didn’t turn up no even answer the phone call .
Aston Knights Construction ltd
No reviews yet
Extension Builder in North London
Aston Knights Construction | Structural Specialists & Main Contractors We are a high-specification Main Contractor operating across Hertfordshire, specializing in complex residential extensions, structural transformations, and high-end superstructure builds. Rooted in commercial-grade structural execution, we bring heavy-engineering standards—including complex steel arrays, high-load masonry, and precision groundworks—to domestic residential projects. We deliver architectural design intent to millimeter tolerances. Our Core Capabilities: Structural Extension Shells: Complete groundworks, steel fabrication/erection, precision masonry, and roof-to-watertight packages. Structural Alterations & Steelwork: Complex RSJ installation, load-bearing wall removals, and architectural reconfigurations. Turnkey Extensions: End-to-end main contracting delivered under formal JCT contracts. The Aston Knights Standard: Engineering Precision: All works executed strictly to structural calculations, building control regulations, and inspector sign-off. Immaculate Site Culture: Safe, clean, and organized sites managed with direct communication and professional site discipline. Fixed Transparent Pricing: Fully itemized line-item proposals with com
Get in touch
S.R Building & Landscaping
No reviews yet
Extension Builder in North London
We provide professional construction servos with a focus on precision, durability and quality. Our experienced team delivers expert solutions for projects of all sizes. Our services include: Formwork installation & Reinforced concrete structures: Walls, Columns, Slabs, Foundations, Basement, Decking, Fencing,
Get in touch

4.1

Top rated Extension Builders

Our Extension Builders in North London, are rated 4.1 out of 5 based on 17 reviews from customers like you.

Quality screening

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 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.