Extension builders in Northwood

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.1 (14 reviews)

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Some of our top rated extension builders in Northwood

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Now eco4 ltd
No reviews yet
Extension Builder in Northwood
We are a trusted construction company specialising in general building work and home extensions. With a focus on quality craftsmanship, reliability, and attention to detail, we help homeowners transform their properties — whether it’s a full extension, renovation, or day-to-day building work. Our team delivers projects on time, on budget, and to the highest standards, ensuring every customer is proud of the results.
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Sova Services Ltd
No reviews yet
Extension Builder in Northwood
We are a company with huge experience in interior and exterior refurbish , extensions , loft conversions !
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EZ Design and Build
No reviews yet
Extension Builder in Northwood
EZ Design and Build offer a complete solution from initial concept through to high end / luxury finishes. We are a design and build contractor, and can assist you with planning and designing the project, getting Planning Permission and statutory approvals. We can get involved at various stages of the project, and we boast a portfolio of beautiful projects, ranging from basement conversions, developing blocks of apartments, commercial fit outs to residential home conversions and extensions.
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Formac Groundworks & Construction Ltd
No reviews yet
Extension Builder in Northwood
We cover all aspects of groundworks and construction
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Richard Wilson
No reviews yet
Extension Builder in Northwood
I’m an experienced and hands-on builder who takes pride in doing solid, reliable work. I’m confident working on all kinds of jobs—from small repairs to full builds—and I always aim to keep things running smoothly, on time, and to a high standard. I keep things tidy, and I’m not afraid to put in the hard graft to get the job done right.
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GTF Brickworks
No reviews yet
Extension Builder in Northwood
Hello my name is George. I have 12 years' experience in all areas of brickwork including feature panels, extensions, garden walls, wall repairs and new builds.
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Bly Contracting Ltd.
Rating: 5 out of 5
Extension Builder in Northwood
Bly Contracting specialise in construction projects within the residential sector. Whether your building your new home or extending, rely on our expertise. We offer a range of servicees: New Build: We work alongside our private clients to develop their ideal home Home Improvement: We can work with you to enhance your existing home Bespoke Landscaping: We offer extensive landscaping services to meet your requirements External Works: We construct patios, driveways and more
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Latest review:
Will was helpful and gave me what I thought was a good quote. He was professional throughout. We had the old drive stripped off, new concrete edges around the perimeter and replaced the shingle. I am very happy with the the finished drive it looks great. I would recommend Bly contracting to anyone needed work done in the area.
Groundwork and Landscaping Services Ltd
Rating: 5 out of 5
Extension Builder in Northwood
Local professional builders with a vast experience installing fencing, paving and general groundwork, we offer competitive prices and good quality finish. We specialise in all aspects of gardening, landscaping and groundwork, we strive to make each garden unique and listen to our clients' individual wishes and requirements. We strive to create a space you can really enjoy.
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Latest review:
Landscaping- 25 Mar 2022
Fatmir was very professional and delivered a high standard of work at a fair price. Reliable, on time and listened to what I wanted. He communicated throughout the job. I am delighted with my fencing and patio he provided. Very trust worthy professional who values is customer and work. Highly recommend and have passed his contact to my neighbour and friend. Thanks Fatmir
LOLLI DESIGN
No reviews yet
Extension Builder in Northwood
With years of hands-on experience in plastering, skimming, insulation, drywall installation, and general building works, we take pride in turning your vision into reality. We work closely with homeowners, architects, and design studios to ensure every project is completed on time, on budget, and to the highest standards
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Zaman Archihomes Ltd.
New on MyBuilder
Extension Builder in Northwood
Zaman ArchiHomes Ltd is a CIAT Chartered Architectural practice providing design and project management services for residential and commercial projects across the UK. We help clients develop their ideas into practical, well-considered designs, from extensions and conversions to new homes and commercial spaces. Our services include measured surveys, planning drawings and applications, building regulations drawings, and support through the construction process. We provide a clear, responsive service tailored to each project.
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ALL ABOUT CONSTRUCTION LTD
Rating: 5 out of 5
Extension Builder in Northwood
My name is James I’m a carpenter joiner by trade but have been in construction for 22 years building extensions , loft conversions renovations etc . All work is quoted by me and carried out by me , or a helping hand on the day
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Latest review:
Joinery & Cabinet Making- 2 Oct 2026
James arrived on time and was very professional in his work. My understairs cupboards were completed in a very short time and there was no mess left behind.
Jobbs
No reviews yet
Extension Builder in Northwood
We do all different types of work, best work is interior flooring, wood, laminate, vinyl, concrete and self levelling screeds all types of interior and exterior painting, wallpapering , decorating and handyman jobs. We have been working with mainly residential properties but have also done some office dilapidations and office fitouts in commercial buildings too. Our strengths are on working with our clients to help them achieve their vision. We are a different type of builder.
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Express Boiler Exchange Company
Rating: 4.8 out of 5
Extension Builder in Northwood
Why choose us? 1. We bring your concept to life 2. A friendly, professional and reliable service 3. Ensure the journey is an enjoyable one 4. Acting responsibly and transparently. 5. You’ll be delighted with the result!
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Latest review:
Extensions- 28 Feb 2026
Poor workmanship , messy guys , roof leaking , walls not done properly , overall not good workmanship as have to redo many aspects of the kitchen extension I have to now replace the kitchen roof which was of poor quality , never employ Peter or Mariusz
ANACOND LTD
Rating: 5 out of 5
Extension Builder in Northwood
Throughout the years in construction my father has gathered well balanced team with broad range of experience in every aspect of the job. After acquiring my engineering degree and some experience elsewhere, I re-joined my father once again to provide the service we are both proud of. Our background and experience in construction, design and engineering allows us to provide our clients with high quality service and ensure smooth work-flow of each project. Attention to detail is the key!
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Latest review:
Ground floor rear extension and Loft conversion. First and Second fix works including drainage, structural (block work, wood work and steel work) electrical, plumbing, plastering and tiling. All works completed to a very high standard, we found Arnolda's and his team very helpful, thoughtful and pro-active nothing seemed to be too much trouble for him, we are more than happy with AnA's Construction Developments.
TZ Construction Ltd
Rating: 4.8 out of 5
Extension Builder in Northwood
Family business run by father and son since 2018. We are specialized in structural alterations including extensions and conversions, from foundation to a key turn. With plenty of projects finished over the years, we are confident to provide excellent quality, delivering your project on time. You can find us every year on construction exhibitions in Bicester and Farnborough. Sincerely Thomas & Ziggy
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Latest review:
Carpentry- 1 Feb 2025
Very happy with the work carried out. Very pleasant experience. Tomaz was very friendly and completed the job in a timely manner.
Guga Home Improvement
Rating: 5 out of 5
Extension Builder in Northwood
Hello, My name is Ervin.I’m a general builder who has been in the building industry for more than 15 years. offers a comprehensive range of services including:roofing, brickwork, pointing ,painting and decorating,driveway and patios,waterproofing,renovation. Excellent quality job with no regrets or any issues. Looking forward making customers happy and build a business relationship. I’m a honest and professional person, will never disappoint any client Thank you from Ervin.
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Latest review:
Fit 4 new doors, paint the hallway and stairs. Ervin arrived promptly was courteous, clean working, and very willing. I am pleased with the work he did for me and would use him again, and certainly recommend him to others

4.1

Top rated Extension Builders

Our Extension Builders in Northwood, are rated 4.1 out of 5 based on 14 reviews from customers like you.

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

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

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

What are the hourly rates of extension builders in Northwood?

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

Find extension builders in Northwood with MyBuilder

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

Step 2: Compare different extension builders in Northwood

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

Step 3: Hire Northwood extension builders with confidence

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

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

What to ask a Northwood extension builder before hiring?

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

An extension builder in Northwood 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 Northwood 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 Northwood?

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 Northwood 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 Northwood 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 Northwood

Can an extension builder in Northwood help with planning permission?

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

Many Northwood 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 Northwood help with materials and finishes?

Yes, most extension builders in Northwood 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.