Extension Builders in Hertfordshire

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 3.9 (15 reviews)

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Some of our top rated extension builders in Hertfordshire

1859 Results

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Kasa
Rating: 5 out of 5
Extension Builder in Hertfordshire
Kasa Building services , it’s proud to offer a wide range of services from new build to loft&extensions , refurbishments , plumbing and electric,carpentry and loads more … With as quality matters
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Latest review:
Plumbing- 3 Apr 2023
Kasa was absolutely fantastic, nothing was too much hassle as we had to make changes during the job. We have now found a plumber, we can use on all future projects. Big thank you Kasa from myself and Aiste.
Kastrati Bricklaying
Rating: 5 out of 5
Extension Builder in Hertfordshire
Kastrati brickwork offer the best quotes in brickwork,blockwork,patio slabs,blocks paving and etc
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Latest review:
Bricklaying- 20 Jul 2026
AN EXCELLENT BUSINESS, PROMPT AND EFFICIENT THANK YOU SO MUCH
LONDAMEXP
No reviews yet
Extension Builder in Hertfordshire
Established by industry experts, LONDAMEXP Construction is a London based home refurbishment business. LONDAMEXP Construction combines more than a decade of experience and expertise to provide commendable refurbishment services. We have been in service since the past 15 years in the UK and NL!
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Td new homes building
No reviews yet
Extension Builder in Hertfordshire
Td new homes building Ltd
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Bawabuilder
Rating: 5 out of 5
Extension Builder in Hertfordshire
We can extend
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Latest review:
Fencing- 13 Mar 2026
We hired Bawa to install new fencing, and he did a fantastic job from start to finish. You can immediately tell he’s an all-rounder who understands construction very well. The work was carried out efficiently and to a high standard. Bawa has a great attitude, is very hard-working, and clearly takes pride in what he does. Communication was easy throughout, and the whole process felt smooth and professional. It was a real pleasure having Bawa work for us, and I wouldn’t hesitate to recommend him.
Naksh construction ltd
Rating: 4.4 out of 5
Extension Builder in Hertfordshire
We are a highly skilled, competent, and professional team of builders at Naksh Construction Ltd. We offer all the building services you could require, including additions, new construction, basement conversions, new residential or commercial construction and renovations of your existing bathrooms, kitchens and residences. Not only do we complete this task quickly and professionally, but we also take care to ensure that every job we complete is sophisticated, elegant, and meets your demands and specifications."
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Latest review:
Extensions- 7 Apr 2025
Quotes were provided and the job was agreed upon. The project involved a full house restructuring and extension build. However, after several stages of work, communication with Jas was lost, and his co-worker took the lead on site. Several issues arose, such as recommending smart plumbing equipment for purchase, but their plumbers were unable to install it. The tiling, skirtings, and tiles were not completed. Tiles around the columns were cracked. After Jas's team abandoned the project, another plumber had to install all the remaining items. The job was left unfinished, and we had to find alternative contractors to complete it. Significant time and money were wasted due to persistent communication problems, failure to issue invoices, and numerous other issues. Eventually, Jas and his main labourer stopped responding and disappeared, ignoring phone calls and WhatsApp messages. Be aware of these potential issues.
RA Designs and Build Ltd
Rating: 5 out of 5
Extension Builder in Hertfordshire
We are a dynamic construction firm specialising in innovative design and high-quality building solutions for both residential and commercial projects. With a commitment to excellence and attention to detail, our team of experienced architects, engineers, and skilled tradespeople collaborates closely with clients to bring their visions to life. We prioritise sustainable practices and utilise cutting-edge technology to enhance efficiency and ensure the durability of our structures. From initial design concepts to final construction, we are dedicated to delivering projects that not only meet but exceed client expectations, creating lasting value and aesthetic appeal. Our customers consistently recommend us for our commitment to quality, attention to detail, and exceptional customer service. They appreciate our ability to turn their visions into reality while staying on schedule and within budget. Positive testimonials highlight our professionalism, seamless communication, and the collaborative approach we take throughout each project. Clients feel confident entrusting us with their building needs, knowing that we prioritise their satisfaction and work tirelessly to ensure memorable and successful outcomes.
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Latest review:
Excellent quality of work which has not caused any problems for many years. Efficient work style whilst keeping up a high standard of work.
BM Lofts ltd
No reviews yet
Extension Builder in Hertfordshire
BM Lofts offers the best quality of lofts conversion, roofing, refurbishment and extension. The company has been created recently, after many years of experience in construction.
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MJP Brickwork
No reviews yet
Extension Builder in Hertfordshire
NVQ 3 in Brickwork 20 years Experience in private homes building Extensions,lofts,Garage convertions, summer house/out buildings,basements.
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Apex Legacy Ltd
No reviews yet
Extension Builder in Hertfordshire
Apex Legacy, deliveries unparalleled craftsmanship and exceptional quality. Our highly skilled team manages all construction aspects with professionalism . From residential to commercial, renovations to developments, we exceed expectations. Transparent communications, meticulous attention to detail and strict safety adherence ensure superior results . Trust us to bring your vision to life .
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Bpm Contractors Ltd
No reviews yet
Extension Builder in Hertfordshire
BPM contractors are a reputable company, known for our cost-effective prices. Our company offers both competitive pricing and flexibility to the needs of our customers. Some of our services include:General Maintenance,Refurbishment,PlumbingElectrical,Painting,Decorating,Carpentry,Flooring,Windows.
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KB construction solutions
Rating: 4.5 out of 5
Extension Builder in Hertfordshire
.Kitchen Fittings .Loft Conversion .Brick Work/ Skimming .Plastering/Plumbing .Wall & Floor Tiling .Gardening/ Fencing .Bathrooms .Wood Flooring .Extensions
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Latest review:
Extensions- 24 Apr 2021
Kujtim, working with his glazers, created a bespoke porch with a glass roof just as we asked. We were impressed with the finish of the internal plastering and Kujtim was able to come to our rescue one evening when we became locked outside the newly installed porch door. Although the project took longer than was anticipated we are happy with the quality of the finished product.
Fantastic builder services Ltd
No reviews yet
Extension Builder in Hertfordshire
Hello my name is Niki, and i am a person that does his love with job. I been to this industry for more then 5 years. I have turn many houses of my customers in they dream one. I can provide full service for a house that its need it, as example of decoration painting, aliminate, windows, stairs, building extensions, fixing fence insulation, gardening and full cleaning. If you have any questions or concerns pleass not hesitate to ask me.
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Eagle Cleaning and Construction Services
No reviews yet
Extension Builder in Hertfordshire
Eagle CC Services is a cleaning and construction company owned and run by ex military. We offer reliability, thorough service and military style precision. No job too difficult, we pride ourselves on being a Can Do organisation. Polite, honest and trustworthy staff who specialise in Military March Out cleans as well as End of Tenancy cleans. Eagle CC Services also employ a number of highly trained and experienced tradesmen who can carry out and and all handyman tasks all the way up to complex construction tasks. We can become a one stop shop for a complex multi faceted job or simply come in and blitz the house clean so it is unrecognisable. Staged by ex blue light services, we pride ourselves on knowing that we have been raised to provide a first class service and this emirates through all of our work. Please do get in touch. We would love to hear from you.
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Erald Gjoka
No reviews yet
Extension Builder in Hertfordshire
We're a teammate of three people in two different fields; electrican and fire security and handyman/painter and decorations We have been working for 5 years with different builders and contractors and private clients We Provide the following service General Building New Building Loft Conversions Roofing Extensions Painting and decorating All electrical works Fire alarm system Entry phones system Access control Cctv
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I care maintanence
Rating: 4 out of 5
Extension Builder in Hertfordshire
Started with small jobs now doing full house refurbishment , , plumbing , electrical, brick work, plastering , carpentry , bathroom refurbishments , kitchen and many more , i also do extensions , any work that needs doing in a house we have solution and team to do, logged on to my builders In 2020 but, left due to extremely busy , giving it a try on 2024 , my profile may look old with no reviews because i got active now in 2024,, check out my pictured of work during and after finish
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Latest review:
Damp Proofing- 1 May 2024
Good and clean job great value for money. However needs to work on timings and punctuality.

3.9

Top rated Extension Builders

Our Extension Builders in Hertfordshire, are rated 3.9 out of 5 based on 15 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 Hertfordshire?

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

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

What are the hourly rates of extension builders in Hertfordshire?

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

Find extension builders in Hertfordshire with MyBuilder

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

Step 2: Compare different extension builders in Hertfordshire

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

Step 3: Hire Hertfordshire extension builders with confidence

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

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

What to ask a Hertfordshire extension builder before hiring?

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

An extension builder in Hertfordshire 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 Hertfordshire 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 Hertfordshire?

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 Hertfordshire 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 Hertfordshire 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 Hertfordshire

Can an extension builder in Hertfordshire help with planning permission?

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

Many Hertfordshire 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 Hertfordshire help with materials and finishes?

Yes, most extension builders in Hertfordshire 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.