Extension builders in Borehamwood

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.3 (11 reviews)

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Some of our top rated extension builders in Borehamwood

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Bentham Builders
Rating: 5 out of 5
Extension Builder in Borehamwood
At Bentham Builders, we’re here to help with all your roofing, paving, and building work. With years of experience, we believe in doing the job properly — no fuss, no shortcuts, just solid work that lasts. What We Do Roofing • Flat & pitched roofs • GRP systems • All types of roof repairs Paving • Driveways & patios • Block paving • Slab work Building & Renovations • Loft conversions • House extensions • Full property renovations • Chimney repointing & brickwork • Structural alterations • Internal upgrades ⸻ Whether you’re planning a new roof, an expanded living space, or a full home transformation, we’ll manage the job from start to finish. Every project is tailored to your vision and completed with the utmost care and attention to detail
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Latest review:
Roofing (Pitched)- 14 Oct 2026
Suad was great, we had a couple of leaks that were tricky to isolate and find a root cause for. He performed repairs on some tiles / flashing for the one that was easier to identify and went above and beyond to help rule out and zero-in on the cause for the other. Really helpful and very professional. No hesitation to recommend. (Sorry I didn't leave a review sooner Suad!) :)
Rapid Response Contractors
Rating: 5 out of 5
Extension Builder in Borehamwood
We are a family run business. No job is too big or too small for us. I have been in the building trade from a early age, and qualified in gas and electrical engineering. My wife handles all admin and material orders for the company whilst im hands on with my team of workers.
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Latest review:
Extensions- 27 Jun 2018
Rapid Response completed a single storey kitchen and bathroom extension for us, as well as refurbishing our existing bathroom and doing a complete rewiring for the whole house. Sheraz and his team were very friendly and a real pleasure to deal with, and their attention to detail and customer service was excellent throughout the whole process. They talked us through each stage step by step, giving us a range of options as well as providing advice on what would work well. Even at the end of the project they asked if we had any little tweaks or finishing touches and wanted to make sure we were happy with everything, which was incredibly helpful. The prices were very reasonable and we are very pleased with the final finished work. We would highly recommend Rapid Response and will definitely be using them again in future. Many thanks!
Fire Safety Works Limited
Rating: 5 out of 5
Extension Builder in Borehamwood
Lofts ,extension, Full refurbishment plastering Painting and decorating wallpaper and much more on commercial and domestic properties 12 years of experience
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Latest review:
Painting & Decorating- 4 Jul 2017
Andi and his team did a fantastic job including removal of wallpapers, skimming and repainting walls and ceilings in no time.... the team worked wonders day and night handing back the property ahead of our move in day!! Andi is easy to talk to, extremely hardworking, keeps his promise and does it all with a smile! I wish I was like that at work when my boss gives me job :) Very pleased we hired Andi
Patrick the Builder Ltd
Rating: 5 out of 5
Extension Builder in Borehamwood
Hi I’m PATRICK from Patrick the builder end I’m very happy to the next job for you General building Brick work Block work Full Refurbishment Loft Conversion Fibreglass roof Garage conversion Dive way Patios Garden conversion & Maintenance
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Latest review:
Extensions- 13 Mar 2022
Patrick and his team were hired to build a garden room. Reasonably priced, offers solutions to problems that might arise during building work, polite and easy to work with. He will also bring his expertise into the project and suggest different ways of doing things or using different products. Happy with the build and will definitely use him again for future projects.
JBS Jonay Building Services Ltd
Rating: 5 out of 5
Extension Builder in Borehamwood
Jonay Building Services LTD has been a consistent and trustworthy Construction Company in North London since 2004.We operate all over London and surrounding areas. J.B.S undertakes a great range of works for a huge variety of clients; From residential extensions, loft conversions and renovations, to commercial landscaping and shop fitting. Whatever your project we have a solution for you.
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Latest review:
Restoration & Refurbishment- 13 Jun 2023
This company was very professional. The work was completed on time and to a high standard. The work was also, good value for money. I would recommend JBS services to anyone seeking either home or business general refurbishment and building works.
Tommy Construction
Rating: 5 out of 5
Extension Builder in Borehamwood
Tommy Construction I offer a full range od home refurbishment services including:plastering,painting,decorating,Floors,woodwork,tiling, Plumbing,electrical services,complete house renovations,driveway,porch,patio,decking,brickwork. I have 13 years experienced and skilled team that can adapt their skill-set to many tasks.
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Latest review:
Bathroom Fitting- 19 Feb 2022
We were very impressed with Tommy Constructions. We have recommended him to friends. He was very professional. He finished the job when he said he would - to a very high standard. We are very happy with our new bathroom.
PLG Works
Rating: 5 out of 5
Extension Builder in Borehamwood
Property Care Specialists
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Latest review:
Carpentry- 21 Dec 2024
Great work from Paolo in upgrading my side alley gate which was not an easy task given its size. Paolo gave good advice thoughout and supplied quality materials at a fair price.
Botnari Construction
Rating: 5 out of 5
Extension Builder in Borehamwood
Botnari Construction. Every project is unique to every homeowner with small details having significant importance. What matters to our clients is what matters to us and these are the problems that we like to solve. We specialise in all Construction works with many years being in the industry, making sure we deliver a fast, efficient and well-organised project at its best.
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Latest review:
Botnari Construction recently completed a project for me and I was extremely impressed with the way they work. From the quality completed to great time management I was very happy with the works carried out. Will definitely be using in the future. 10/10
Aquaheat plumbing and heating
Rating: 5 out of 5
Extension Builder in Borehamwood
Experienced and dependable plumber offering a professional, clean, and efficient service. Fully insured, competitively priced, and committed to high-quality workmanship on every job, big or small.
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Latest review:
Genti is a reliable handyman. Professional Talented On Time
1RightConstruct
Rating: 5 out of 5
Extension Builder in Borehamwood
Extensions and Loft conversions , General building works, Kitchens and Bathrooms but can also carry out all Electrical jobs. We take great pride in our work and we enjoy to admire the transformation of projects from the beginning to end.
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Latest review:
Extensions- 28 Jul 2023
We recently had the pleasure of working with Marius, his skills and craftsmanship were truly outstanding! Throughout the construction process, his attention to detail was commendable. Every aspect of the project, no matter how small, was meticulously executed. Marius' expertise was evident in the precision of his work, and it was clear that he takes great pride in delivering the best possible results. Marius kept us informed at every stage, patiently explaining the progress and addressing any questions or concerns I had. This level of transparency and professionalism made the entire experience enjoyable and stress-free. Marius' dedication to quality was evident in the choice of materials he used, ensuring the durability and longevity of the finished product. He had an eye for aesthetics, ensuring that the final result not only met functional requirements but also looked stunning. Not only was Marius skilled and reliable, but he also completed the project within the agreed timeframe and budget. His efficiency and commitment to deadlines were highly commendable. In summary, I can confidently say that Marius' work is truly great. His exceptional skills, attention to detail, clear communication, and commitment to excellence made the entire construction process a delightful experience. I highly recommend Marius to anyone in need of a reliable and talented builder.
Koncore Plumbing & Heating Ltd
Rating: 5 out of 5
Extension Builder in Borehamwood
*PLEASE ONLY SHORTLIST US IF YOU ARE HAPPY WITH OUR QUOTE* We have many years of experience and, as such, have seen almost every imaginable plumbing and heating emergency that you can imagine, and we can fix them all. We aim to fix every problem on our first visit, in the fastest time possible. NO JOB TOO BIG OR TOO SMALL, WE DO IT ALL!!
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Latest review:
Gas Work- 27 Jun 2026
Good job
A. D. Builders
Rating: 5 out of 5
Extension Builder in Borehamwood
Hi , I’m Aaron Davis of AD builders, I Have been in the building trade for 20 years. Orginally worked for my father in a family run business. I take a lot of pride in my work , references are available at any time. I'm a bricklayer by trade and ground worker. I have built many extensions over the years, and enjoy it now just as much as I did when I began. My work is of a very high quality , thanks for taking the time to read through my profile.
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Latest review:
Extensions- 23 Dec 2021
We originally asked Aaron to come look at the property before we purchased to understand the possibilities of a large extension. Since that point over a year ago Aaron has worked with us in refurbishing the existing house as well as building a large wrap around extension. The core team we had on site of Aaron, Dan, Karl are hard working, they care about what they do, and they are good fun to be around. Aaron also has a broad network across all the other trades - all of which did a great job on the project. I would certainly recommend them for any work you are considering.
NDR PROFESSIONAL LTD
Rating: 5 out of 5
Extension Builder in Borehamwood
Plastering, Silicone render, plasterboard...
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Latest review:
Plastering- 29 Aug 2025
I asked Daniel to check and price some pebble dashing job. Daniel was fair in his pricing. He was on time in commencing the work as we had agreed. He never left the site until the job was completed within a few days, hence causing least interruptions. I do recommend him and I intend to ask him to carry out works in future.
Flori plasterer
Rating: 5 out of 5
Extension Builder in Borehamwood
👋 Welcome to my page! I’m a professional plasterer and renderer with 13 years of experience in the trade. We specialise in all types of plastering and rendering, including internal and external work, and can also take care of any additional construction work required to complete your project. 🏠 Quality workmanship 🔨 13+ years of experience ✅ Reliable and professional service 📍 Domestic & commercial projects Whether it’s a small repair or a full house renovation, feel free to get in touch for a free quote or advice. Thank you for visiting my page! 🙌
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Latest review:
Plastering- 9 Oct 2026
Very nice finish did a good job , would recommend!
JCL Renovations Ltd
Rating: 5 out of 5
Extension Builder in Borehamwood
We are a construction with over 20years experience between the team, We undertake all aspects of renovation work including house renovations and extensions. We also have extensive experience in laminate, hardwood flooring and decking installation. We offer a solution for any projects from start to finish all in one place.
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Latest review:
Repointing- 23 Jan 2020
Job well done. Will definately use in the future.
Kassa Property Development U.K Ltd
Rating: 5 out of 5
Extension Builder in Borehamwood
We are willing to engage from small to large projects, aiming to provide trade personnel in the top 5% of their speciality. We aim to provide what the client wants. with our recommendations as oppose to our personal opinions, in order to provide end satisfaction.
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Latest review:
Bricklaying- 16 Aug 2018
Gebre is a punctual, courteous, hardworking individual who knows a great deal about his skill. He helped me in choosing the material. And started work promptly the next day on time. Moreover, he works in a neat orderly manner that impressed my neighbours. I strongly recommend him.

4.3

Top rated Extension Builders

Our Extension Builders in Borehamwood, are rated 4.3 out of 5 based on 11 reviews from customers like you.

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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.