Extension Builders in Borehamwood

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 3.7 (13 reviews)

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Some of our top rated extension builders in Borehamwood

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THE OREILLY GROUP LTD
Rating: 5 out of 5
Extension Builder in Borehamwood
We undertake all Groundworks packages to simple repairs to large site packages.Having been in the industry almost 20 I have worked on a number of large scale projects including RAF Northolt,Harry Potter world London and many housing developments. All our lads are fully trained and certified,including Cscs,Cpcs,first aid etc.We own all our own plant from 1 tonne to 30 tonne excavators, dumpers, skips and grab lorrys.Here at The OReilly Group we pride ourselves on repeat business & recommendations
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Latest review:
Groundwork & Foundations- 25 Jul 2023
The Oreilly Group completed my groundworks, external drainage and some knock throughs on my extension. The job commenced when promised and was completed within programme. The works were completed on time and this included some extras I threw in along the way. I would reccomend Owens team for any groundwork and drainage project - very happy with the outcome.
Sfs building and joinery
Rating: 5 out of 5
Extension Builder in Borehamwood
Hi am Scott recently moved down south from Newcastle, I am a time served shopfitter and had lots of experience in building work over the last 20 years, I am honest, reliable and take pride in my work, I also treat every customer and the customers property with respect.
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Latest review:
Joinery & Cabinet Making- 9 Jun 2023
Scott was absolutely fantastic. He was extremely friendly from the very start of discussing the job on the phone to the finishing of the job. He gave great advice about what needed to be done and was extremely helpful throughout the process. His craftsmanship was exception, I couldn’t be happier with the kitchen! He went above and beyond to ensure that the kitchen project was completed to a high quality and made sure that we were completely happy with it before finishing the job. I highly recommend Scott and would hire him again without any hesitation!
WS Building
Rating: 4.8 out of 5
Extension Builder in Borehamwood
I am Builder with 30 years experience in all kind of building projects.Together with my team we can provide for you a complete building service and help with advice in any aspects of building works. We specialise in: conversions, extensions, renovations, reconfigurations, basements, lofts, new kitchens and bathrooms, flooring , doors, gardening, demolition works, roofing, steel installation, plastering, painting and decorating and all others of building works included electric and plumbing.
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Latest review:
Restoration & Refurbishment- 10 Nov 2025
Professional and on time, recommended
Tim
Rating: 5 out of 5
Extension Builder in Borehamwood
Im specialise as grand working
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Latest review:
Fencing- 25 Aug 2022
Time was very professional and the job was very well done.
Orama Group Ltd
Rating: 5 out of 5
Extension Builder in Borehamwood
Orama is the family run Construction Company of choice, for large and small scale projects operating throughout London. Offering a bespoke service and setting new standards in the construction industry.
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Latest review:
I originally contacted Joe from Orama to fit a new kitchen for me. When he came to give me a quote, I hadn't yet chosen what I wanted. He really took the time to make several recommendations and so I decided to go ahead with him to design my kitchen fully and fit it. The team were so easy to work with and most importantly respectful in my home! Their attention to detail is second to none. He really understood the style I liked in one conversation. The finish is flawless. I highly recommend them!!
Arisa renovation LTD
Rating: 5 out of 5
Extension Builder in Borehamwood
Arisa Renovation LTD is a reliable and experienced building company based in London, offering a full range of high-quality renovation and construction services. We specialise in complete property refurbishments, including house renovations, extensions, and loft conversions. Our services cover all aspects of building work such as painting & decorating, bathroom and kitchen installations, carpentry, flooring, tiling, plastering, and general maintenance. We have extensive experience in structural work, including roofing, framing, and full property transformations from start to finish. Whether it’s modernising an interior space, installing a new bathroom, building bespoke stairs, or completing a full renovation project, we deliver excellent craftsmanship with great attention to detail. We pride ourselves on being professional, punctual, and tidy on every job. All work is completed to a high standard, on time, and within budget. Customer satisfaction is our top priority, and we maintain clear communication throughout every stage of the project. We also offer a workmanship guarantee to give our clients peace of mind. If you are looking for a trustworthy and skilled builder in London, Arisa Renovation LTD is here to help bring your project to lif
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Latest review:
We are extremely happy with the bathroom renovation completed by Arista Renovation LTD. The workmanship is top quality, especially the tiling and finishing details. Communication was clear throughout and the project was delivered exactly as agreed. Would definitely use them again.
Star 5 construction ltd
Rating: 5 out of 5
Extension Builder in Borehamwood
Hi everyone,Star 5 construction Ltd provides best quality of work with affordable price and finish your project with in giving time. For coustmer satisfaction we will provide you our liability insurance details. Our services: New build Extension. New loft conversation and new Roofing. Supply and fit new double glazed windows and doors, with K silicone rendering or Standard plastering. All types interior and exterior design and build. All types supplied and install steel beams. Free quotes and estimate. Many more offers if you need any information feel free to send us email with your plan, happy to provide you all the information.
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Latest review:
Mr singh and his team have done an excellent job,couldn’t have been more happier.Mr Singh’s experience and advice has saved me some serious money.really happy with the final product. It was big and complex task but it was completed in very efficient and professional manner.without any hesitation I’ll be recommending their services to friends and family
Cleary Brickwork Limited
Rating: 5 out of 5
Extension Builder in Borehamwood
When you love doing something as much as we do, great work follows. At Cleary Brickworks we build more than just homes, we build dreams, and we might be expert Bricklayers at heart but it's not all we do. Transforming spaces and turning houses into homes is what really motivates us to deliver our best. We're always booked up in advance but we're never too busy to take on a new project! With over 25 years’ experience there’s no job to big or too small.
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Latest review:
Bricklaying- 16 Oct 2022
First class job by Kieren and the guys. They did 2 garden walls, 2 planters and a bbq and sink area for us, which included some not so standard details. They seemed as excited by the job as we were and its always great to have someone feel passion and pride in what they do. Reliable and nice guys too. We're so pleased with what they've done and would 100% recommend.
NAIL & SCALE
Rating: 5 out of 5
Extension Builder in Borehamwood
Nail and Scale is a reliable and professional handyman and property maintenance company providing high-quality repair, maintenance, and improvement services for residential and commercial properties. We specialise in general handyman work, including carpentry, minor plumbing and electrical repairs, painting and decorating, furniture assembly, installations, and general property upkeep. Whether it’s a small repair or ongoing maintenance, Nail and Scale delivers efficient, affordable, and high-standard workmanship. Customer satisfaction is at the core of our service. We pride ourselves on being punctual, tidy, and detail-oriented, ensuring every job is completed safely, professionally, and with minimal disruption. At Nail and Scale, no job is too small — we are committed to keeping your property safe, functional, and well-maintained.
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Latest review:
Handyman- 6 Jan 2026
Firstly, I havent used mybuilder in years, and I hired Zaim hoping for a good job on our dining chairs. I can safely say I was very suprised. He did an excellent job. From the moment we talked he had great communication, he was timely and said he would call 30 mins before arrival which he did, he spent time fixing the legs of the chairs as if he were doing the work in his own home. He is also not afraid of letting you watch him work, he has nothing to hide and is genuinely a nice person. He wants to do a good job and doesn't leave until the room is in the condition it was in before he came, he even hoovered up afterwards. Zaim was professional, calm and knowledgeable. Some people do a rush job, but you could see he wanted to do a job that was good, even redoing work because he wasn't happy with it. A solid job. Would certainly recommend.
DGH Construction
Rating: 5 out of 5
Extension Builder in Borehamwood
Greetings, My name is Defrim and with over 3 decades of international and national experience in the field I provide high quality work and solutions at an outstanding rate. Please feel free to contact me for a free estimate.
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Latest review:
Carpentry- 5 Nov 2022
The Job was done efficiently and I was extremely pleased with the builders professionalism and his experience. He worked with extreme care and once the job was completed he tidied and left the area clean.. I will definitely recommend him..
NeoStruct
Rating: 4.7 out of 5
Extension Builder in Borehamwood
Hello. I have over 15 years of experience. I work in partnership with my friends. We are punctual, honest, precise and we don't waste your time. I guarantee you very good quality and high standard of work. No job is too big or too small for us.
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Latest review:
Landscaping- 26 Apr 2026
NeoStruc team was amazing, ponctual and courteous. They were great at advising on material to purchase, did the work quickly and perfectly, leaving the place pristine! Strongly recommends!
Mapna constraction ltd.
Rating: 4.2 out of 5
Extension Builder in Borehamwood
Hi everyone, We are a family-run business with over 10 years experience and pride ourselves on our incredibly high-standard quality of work, customer rapport, competitive prices and efficient time-frames. With our customers' satisfaction held in the heart of our work, we will go the extra mile to ensure all needs and requirements are met and you are 100% satisfied with the end product. 'If it isn't good enough for our home, then it isn't good enough for yours'.
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Latest review:
Bathroom Fitting- 8 Apr 2026
Arash and the team were great - on the job on time every day - flexible in regards a lot of the fittings and adjustments. Very good price and work completed on time. Monies all agreed upfront, payment in part as based on progress. Will use again.
Vasilis Bachos
Rating: 5 out of 5
Extension Builder in Borehamwood
My name is Vasilis and I am an enthusiastic individual who loves what I do. I have 35 years of experience in construction and I am ready to take on any requests! One thing to keep in mind, I don't speak very good English; however rest assured I have way to tackle that minor inconvenience!
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Latest review:
Hard Flooring- 26 Dec 2025
Job done very well. Thank you Vasilis. Changed door lock and toilet seat. Very good time keeper and completed both jobs well.
SS Carpentry
Rating: 5 out of 5
Extension Builder in Borehamwood
I have done jobs from shelving to roofing.I have a good job knowledge and I have ran big site. I have been a carpenter for 6 year and normally do first fix work but I can do second fix , kitchen fixing and plasterboard. I have all the tools to do the jobs with.
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Latest review:
Carpentry- 28 Aug 2018
Steve is punctual, easy to work with, hard working with all the skills, knowledge and experience to efficiently produce a successful result- replacing old floorboards and removing squeaks in steps- recommended and known from this job alone.
Km Building Specialists Ltd
Rating: 3 out of 5
Extension Builder in Borehamwood
KM Building Specialists is dynamically developing company created by people with passion. Our mission is professional advice, meeting expectations and, as a result, obtaining satisfaction of all our clients. We work closely with various construction specialists (electricians, gas-safety experts, architects, garden designers) to enable us to deliver the top class service and to ensure that the safety building regulations and codes of practice are followed.
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Latest review:
A single storey extension. Bedroom chimney place knocked down. Patio to the rear. Marek was very hardworking, professional and tidy. He was at my home every day and alway very early and always worked until late to get the job done
H&M Construction
Rating: 5 out of 5
Extension Builder in Borehamwood
We do carpentry and roofing works. We present our work professionally. We strive to please the customer. We have experience over the years. Our prices compete with everyone. Our headquarters is in London
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Latest review:
Carpentry- 27 Mar 2022
We were very happy with Hesham’s work on a tricky job mending our Victorian window shutters.

3.7

Top rated Extension Builders

Our Extension Builders in Borehamwood, are rated 3.7 out of 5 based on 13 reviews from customers like you.

Quality screening

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

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

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

What are the hourly rates of extension builders in Borehamwood?

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

Find extension builders in Borehamwood with MyBuilder

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

Step 2: Compare different extension builders in Borehamwood

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

Step 3: Hire Borehamwood extension builders with confidence

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

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

What to ask a Borehamwood extension builder before hiring?

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

An extension builder in Borehamwood 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 Borehamwood 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 Borehamwood?

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 Borehamwood 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 Borehamwood 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 Borehamwood

Can an extension builder in Borehamwood help with planning permission?

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

Many Borehamwood 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 Borehamwood help with materials and finishes?

Yes, most extension builders in Borehamwood 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.