Extension builders in Borehamwood

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.3 (12 reviews)

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Some of our top rated extension builders in Borehamwood

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Crystal Curb Cleaners
No reviews yet
Extension Builder in Borehamwood
I run Crystal Curb Cleaners, a professional driveway and exterior surface cleaning service based in London. As a one-person business, I take pride in delivering high-quality results with close attention to detail. Using powerful jet wash equipment, I help restore the look of driveways, patios, and pathways — always aiming for spotless, long-lasting results and satisfied customers.
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FineLineSolutions
No reviews yet
Extension Builder in Borehamwood
Hi, I’m Alex, and I take pride in offering reliable, high-quality work with a friendly, down-to-earth approach. I understand how important your home and outdoor spaces are, and I’m here to help bring your ideas to life—whether it's fencing, repairs, or improvements. I believe in clear communication, fair pricing, and leaving every job tidy and done to the highest standard. No job is too big or too small, and I’m always happy to offer advice or answer any questions along the way. I look forward to helping you with your next project!
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CIM
New on MyBuilder
Extension Builder in Borehamwood
CiM Gas Services Professional Building Services & Engineering Solutions CiM Gas Services delivers high-quality building services and engineering solutions across the commercial and domestic sectors. With over 30 years of industry experience, we specialise in gas engineering, heating, plumbing, electrical services, air conditioning, refrigeration and air source heat pumps. City & Guilds qualified and Gas Safe registered, we bring extensive technical expertise, building works and project experience to every job, with a strong commitment to safety, reliability, quality workmanship and professional service. Experienced. Reliable. Quality Driven.
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B D construction
Rating: 5 out of 5
Extension Builder in Borehamwood
Have been a builder for forty years family run business with my son’s working with me.
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Latest review:
Brad and his company have done various jobs in my house including painting and decorating - refurbing my bathroom (which is amazing) and putting a new roof on my shed. He also does a lot of conversion and refurbing work for the Property Investment company that I work for and all to a very high standard. He is professional and hardworking and wouldnt hesitate to use his company for future work as well
Amritpal singh
Rating: 4.5 out of 5
Extension Builder in Borehamwood
We are here to assist you and provide you the work you dreamt off on very reasonable prices so trust us with your house and we will do the best for you .please do understand that we have to pay to get contact details of customers so it’s important being a customer to check the portfolio before short listing a tradesman just to be sure that we won’t just be paying for nothing .
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Latest review:
Extensions- 4 Jan 2026
I hired Amrit based on positive reviews, but my experience was extremely poor. The work showed all the signs of a cowboy builder. I’m sharing this to help others avoid the stress, delays, and financial risk I went through. 1: No Respect for Contract or Deadlines Contract deadline was 15th September, which he completely missed. Despite delays, he demanded money almost daily. When I referred him to the payment and work schedule he signed, his response was: “I didn’t read it, I just signed it.” 2: Dangerous and Unprofessional Working Practices Brought in unqualified workers, many of whom could not speak basic English. He ignored safety standards throughout the project and wanted to use the same unqualified workers for gas work, which is extremely dangerous. When I objected, his response was: “Don’t worry, you will get a new house if it blows up as you have insurance.” 3: Work failed multiple building control inspections. He eventually refused to cooperate with the building inspector.
Mannat Construction
No reviews yet
Extension Builder in Borehamwood
With over 20 years of experience in the building industry, I specialise in high-quality house extensions and loft conversions that add space, value, and long-lasting quality to your home. I take pride in delivering work to a professional standard, with a strong focus on reliability, clear communication, and attention to detail. From the initial design stage through to completion, I work closely with customers to ensure every project is carried out smoothly, safely, and to the agreed timeline. Whether you're looking to expand your living space, create an extra bedroom, or fully transform your property, I bring the skills and experience needed to deliver results you can trust. I’m committed to providing honest advice, transparent pricing, and a clean, tidy working environment. Customer satisfaction is extremely important to me, and much of my work comes from repeat clients and recommendations. I look forward to helping bring your next project to life.
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Mario bilder
No reviews yet
Extension Builder in Borehamwood
Guțu marian
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LBS LANGTON LTD
Rating: 5 out of 5
Extension Builder in Borehamwood
WE ARE A BUILDING, GROUNDWORKS AND DEMOLITION SPECIALIST COMPANY WITH 28 YEARS IN THE INDUSTRY. WE PRIDE OURSELVES ON DOING THE JOB PROPERLY AND ON TIME WORKING WITH CLIENTS TO GET THE VERY BEST RESULTS
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Latest review:
Groundwork & Foundations- 25 Jul 2025
Ralph and his team did a fantastic job making a concrete base for a summer house He was reliable, charming and did a few extra jobs while he was here ! Ralph,Charlie, Roy and Captain were a pleasure to meet and we recommend this company wholeheartedly
George
No reviews yet
Extension Builder in Borehamwood
Us at G&GO Constructions Limited are a small team of full experties. We are specialised in decorating, tiling, plastering, carpentry and extensions. We've been in the construction industry for over 20 years and we perform and deliver excellent results to all our customers.
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James Murdoch
Rating: 5 out of 5
Extension Builder in Borehamwood
Construction company with 27 years experience in the industry between us and a team of other qualified tradespeople necessary to undertake projects.We are new to this site so please ask us to provide you with reference from previous clients. We have experience in timber frame homes, apartment blocks, extensions, renovations and commercial works.We take great pride in our work and make sure every job is completed to the highest of standards on time and on budget. Our aim is your satisfaction.
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Latest review:
Carpentry- 31 May 2017
Was really impressed with these guys. Helped me order the correct garden door and then went to pick up extra bits when the order didn't turn up correctly, for no extra cost and couldn't have been nicer about it, even though it was a pain for them. Really cheerful and helpful - nothing was too much trouble. Would use them again, for sure.
BOZTECH Building Services and Construction Limited
No reviews yet
Extension Builder in Borehamwood
Hi this is Josh.
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RSL Renovation Ltd
No reviews yet
Extension Builder in Borehamwood
We are a trusted and experienced general contracting company, delivering high-quality craftsmanship across all areas of construction, extensions, alterations, and refurbishments. With a commitment to excellence and attention to detail, we bring your vision to life— on time and within budget. Our Services Include: • General Building – Full refurbishments and renovations tailored to your needs • Extensions & Loft Conversions – Expertly designed to enhance space and value • Bathroom & Kitchen Installations – Stylish, functional, and built to last • Floor & Wall Tiling – Precision tiling for a flawless finish • Carpentry & Joinery – Custom woodwork and structural solutions • Plumbing & Electrical Work – Safe, certified, and up to code • Interior & Exterior Decorating – Transforming spaces inside and out • Garden Landscaping, Fencing & Paving – Creating beautiful and practical outdoor areas • Maintenance Services – Reliable upkeep for homes and businesses Whether it’s a complete renovation or a small upgrade, we approach every project with professionalism and pride.
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ATW Construction Services
Rating: 5 out of 5
Extension Builder in Borehamwood
I am a local builder with over 20 years' experience. I am a time served Advanced City & Guilds Bricklayer. I am hands on with a small team that work alongside me. I am reliable and offer a professional service. Most of my customers are repeat business. Member of the Federation of Master Builders.
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Latest review:
Gas Work- 4 Dec 2018
A really neat and professional finish. Lots of good advice given. Would recommend to anyone.
P&C Multiservices Ltd
No reviews yet
Extension Builder in Borehamwood
P&C Multiservices Ltd At P&C Multiservices Ltd, we deliver high-quality construction, landscaping, and external works across London and the surrounding areas. We work with homeowners, developers, housing associations, and commercial clients, providing reliable workmanship and professional project delivery from start to finish. Our services include: * Home extensions and structural alterations * Full property refurbishments and renovations * Kitchens and bathrooms * Landscaping and garden transformations * Porcelain paving and natural stone paving * Decking and timber structures * Fencing and gates * Drainage and groundworks * Patios, pathways and driveways * General building and maintenance works We pride ourselves on quality, attention to detail, clear communication, and completing projects safely, on time, and within budget. Whether it’s a single home improvement or a larger commercial project, our experienced team is committed to delivering results that stand the test of time. P&C Multiservices Ltd – Building Better Spaces, Inside and Out.
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Darragh Tierney Contracts LTD
No reviews yet
Extension Builder in Borehamwood
DTC is a trusted residential construction company specialising in home extensions, renovations, loft conversions, and new builds. We deliver true workmanship and solutions tailored to help you create the home you want
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Balham construction Ltd
Rating: 5 out of 5
Extension Builder in Borehamwood
Balham construction are a London based refurbishment and construction company that offer a wide range of services from full Property refurbishment to extensions and loft conversions and everything in between
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Latest review:
Tom and the team completed a full renovation of my flat. This included refurbishment of my kitchen, bathroom and general redecoration. The team were extremely hardworking and punctual and no job was too difficult for them. I would highly recommend their services.

4.3

Top rated Extension Builders

Our Extension Builders in Borehamwood, are rated 4.3 out of 5 based on 12 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.