Extension Builders in Hertford

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4 (17 reviews)

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Some of our top rated extension builders in Hertford

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STEADYBUILDERS LTD
Rating: 3.8 out of 5
Extension Builder in Hertford
Steady Builders Ltd are experienced, reliable building contractors with over 20 years in the trade. We specialise in solving problems others can’t — providing practical, compliant, and long-lasting solutions for homes of all types. From structural alterations to full conversions and refurbishments, we deliver solid workmanship, clear pricing, and jobs done right first time. Our experience allows us to identify issues early, keep projects on track, and minimise disruption for homeowners. If you’re looking for a builder who understands the job, respects your home, and delivers dependable results, Steady Builders Ltd is the team you can trust. Also we do happen to be on channel 4: Kirstie and Phil's Love It or List It: Season 9, Episode 4
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Latest review:
Conversions - General- 31 May 2026
Milen and his crew were quick and professional in clearing rubble and making good. They solved unforeseen problems that came up during the job and stuck to the original quoted price throughout. Would recommend.
CB building services
No reviews yet
Extension Builder in Hertford
I have been doing carpentry for 20 years with experience in first and second fix
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Newstar Building Services Ltd
Rating: 4.9 out of 5
Extension Builder in Hertford
HI my name is Bill and I run a building company. All our work is base on recommendations costumers We work all around London.
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Latest review:
Hard Flooring- 22 Oct 2025
Enea did an incredible job, and we’re beyond happy with the final result. He was very accommodating, helped us choose the right tone of varnish beforehand, and kept us updated throughout the day by sending pictures of his progress (as we were both at work). Enea is trustworthy, and even though we didn’t have the chance to meet him in person, he left the flat securely, taking care of our keys and door. We highly recommend Enea!
Joe Hilley
Rating: 5 out of 5
Extension Builder in Hertford
St Albans Brickwork specialise in all elements of residential and commercial brickwork construction projects. Our skills cover a wide-range of projects, home extensions and renovations, driveways & patios, garden walls, repointing, garage conversions and large building contracts. With more than 15 years’ experience in constructing new homes and delivering home improvements throughout St Albans, we are well equipped with the expertise to complete any size job to the highest possible standard.
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Latest review:
Repointing- 29 Jun 2017
Joe did an excellent job with our garden steps, despite the fact that we initially messed him about with timing of the job. He got the work done by our deadline, to a high quality, and for a good price. Highly recommended.
B Williams groundwork & brickwork
No reviews yet
Extension Builder in Hertford
All groundwork/ foundations and brickwork/ blockwork. 20+ years experience
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True Home Solutions
Rating: 5 out of 5
Extension Builder in Hertford
True Home Solutions is a full service Home Builder dedicated to building and improving residential homes according to client needs and desires. Founded in 2010 and based in Loughton Essex , our team is ready to give your space whatever updates it requires. If you want to transform your home or workplace’s look with a stunning addition, we’re the right Home Builder for you. Our team of seasoned builders and installers are dedicated to turning your visions into a reality.
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Latest review:
Bricklaying- 1 Aug 2019
Alec has done a fantastic job building our retaining garden wall and steps. We are more than happy with the professional job Alec has done. He is polite and friendly and we would thoroughly recommend him. A good price for a fantastic job.
My Craft Building Solutions Ltd
Rating: 5 out of 5
Extension Builder in Hertford
My Craft Building Solutions Limited are a family run business, and we offer all aspects of building services. No job too big or too small with a lot of our work done for Anglian home improvements we understand the importance of customer care We specialise in: Extensions Conversions Porches Bricklaying
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Latest review:
Groundwork & Foundations- 27 Sep 2023
A team of 3 bothers, nice guys and did a good job. maybe a little over priced but I did agree the price before, so really I cannot complain.
AMG LONDON LTD
Rating: 5 out of 5
Extension Builder in Hertford
AMG places great emphasis on the importance of up to date methods of design and construction. As a key player at the forefront within the market place we specialize in building Extensions, Loft conversions, Drylining, ceilings, painting and decorating to complete internal building fit out.
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Latest review:
Stefan did an extension for my flat from the installation of structural steel, to the roof, and demolition. To building the shell and all cosmetic work inside. I am very happy with the work. Time keeping was good, pricing was good he was open and honest throughout, he was very tolerant and easy to work with. Always positive and willing to help if there were any issues. He would help resolve any issues in the quickest and best way possible. Very happy. I would happily recommend him.
F.A.D plastering and home improvements
No reviews yet
Extension Builder in Hertford
Been doing my job for 20+ years now so lots of experience and happy customers , my main trade is plastering but I also cover lots of other jobs to help improve people homes, and know it’s been done properly,and to a high standard,based in Hertford but can travel
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Prestige developments london ltd
Rating: 5 out of 5
Extension Builder in Hertford
Prestige Developments (London) Ltd are a well established, trustworthy, reliable and professional building company with over 20 years experience within the trade.We are based in Enfield covering North London and Hertfordshire. Our services are professional and of high quality. Our customers rate us highly for our ability to stick to deadlines, and for the quality of our workmanship.We provide a professional service from the initial free quotation to the end professional finish.
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Latest review:
polite, well mannered and tidy. fixed the problem in less than an hour. thank you
JR Construction & Maintenance Ltd
Rating: 5 out of 5
Extension Builder in Hertford
At JR Construction, we are your comprehensive partner in the construction industry, dedicated to guiding you through every stage of your project—from the initial planning phases to full development and completion, followed by reliable aftercare. Our expertise spans all aspects of construction, with a specialization in full refurbishments, extensions, and conversions. We understand that every project is unique, and our team is committed to delivering tailored solutions that meet your specific needs. In addition to our core construction services, we offer fully comprehensive garden and landscaping design and build services. Our goal is to enhance your outdoor spaces, transforming them into beautiful and functional areas that complement your property. We invite you to contact us for all your building needs. Whether you’re planning a small renovation or a large-scale development, JR Construction is here to turn your vision into reality with professionalism and dedication.
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Latest review:
Landscaping- 5 Apr 2025
Prompt polite professional and reasonably priced Josh and his team did a great job in removing our old gazebo and assembling our new one. Would definitely use again for other jobs
Plaster Perfect
No reviews yet
Extension Builder in Hertford
I’ve been a plasterer for 34 years but last 15 years been doing all aspects of building
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What 4 Building Solutions LTD
Rating: 4 out of 5
Extension Builder in Hertford
Here at What 4 Building Solutions LTD, We cover all aspects of the of the building process. From helping with design using our amazing architects. Getting your ideas through planning and building regs, then making your dreams come true. We cover Herts, London, Essex & Cambridgeshire. Taking on any size project from new builds to a refurb or even just a new kitchen we can help. We offer man and machine hire and licensed waste removel. We have all the trades on hand ready to go so we have no delays on our projects. We have the SOLUTION for your project... We are pround Members of the Federation of Master Builders and TrustMark the only Government Endorsed for Quality work.
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Latest review:
Extensions- 21 Mar 2026
I am a Chinese Lady honourably established at Hollyview Close, London NW4 3SZ, of at least sixty years of age, and distinguished by the wearing of spectacles, which bespeak both careful attention and the wisdom accrued through decades of devoted service. I am entrusted with the disciplined and esteemed practice of electrical repair and maintenance, a vocation carried out with the utmost reverence for order, propriety, and the impeccable standards befitting households of the highest esteem. Upon my arrival, I bring forth with equal dignity both the meticulous execution of all electrical works and the ceremonial offering of fine chewing gum, bubble gum, and freshly selected lemons, each item presented with deliberate attention to freshness, quality, and presentation, in the grand tradition of British hospitality and courtly decorum. The chewing gum is carefully curated to encourage measured mastication, fostering calm, poise, and contemplative steadiness; the bubble gum is reserved f
Ferrity Construction & Home Improvements
Rating: 5 out of 5
Extension Builder in Hertford
Ferrity Construction is a Hertfordshire-based construction company delivering high-quality workmanship across a wide range of projects. We pride ourselves on a professional approach, attention to detail, and completing every project to the highest standards. Our areas of expertise include: - Insulation and thermal efficiency works - Retrofit solutions - Full home refurbishments - External Wall Insulation (EWI) - Roofing - Rendering - General building services - Patios - Electrics - Plumbing - Maintenance and repairs
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Latest review:
Restoration & Refurbishment- 27 Mar 2026
Excellent job to board out garage and lay flooring. Very professional, good value, highly recommended.
B.CANI Limited
Rating: 5 out of 5
Extension Builder in Hertford
Reliable, fully insured construction company delivering high-quality workmanship across residential and commercial projects. We cover all aspects of construction including extensions, renovations, loft conversions, kitchens, bathrooms, roofing, landscaping and full refurbishments. From design to completion, we manage every stage with clear communication, fair pricing and attention to detail. Customer satisfaction, safety and deadlines are our priority.
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Latest review:
Extensions- 11 Jan 2018
This was our first project, and we were exceptionally fortunate to find Bujar. We're actually getting tired of hearing our family and friends tell us how lucky we are and how amazing he sounds. One of the most honest, trustworthy, and genuine people I've ever met. If I had a problem, he'd be one of the first people I'd call! In fact I did last week and he came to the rescue :) His team were all friendly, polite, conscientious and very tidy. They worked around us as much as they could, always making sure we had access to what we needed which sometimes meant it took them longer to work. Bujar is a perfectionist and is so proud of what he does, he made sure everything was done to a high standard - the estate agent who came round after we were done was impressed! His prices are very fair (better value than other quotes we got and much less time). We couldn't believe it was done in the 3 months he said it would take, and we managed to fit in a few extra bits and pieces after that. He was so helpful throughout, took all project management on and didn't bother us unless an important decision needed to be made. He drove us around all over the place to sort kitchens, bathrooms, etc. and gave us really helpful advice throughout the process. Highly recommend him and his team. I can't imagine ever wanting to look for another builder unless I had to - something that is quite common amongst Bujar's clients. We are extremely pleased with everything about our new house.
Anthony Galvin
No reviews yet
Extension Builder in Hertford
Young, fresh and talented builders. We quote for free and we base ourselves on customer first principles. Our main objective is to offer the best quality work for a fair price.
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Top rated Extension Builders

Our Extension Builders in Hertford, are rated 4 out of 5 based on 17 reviews from customers like you.

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

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

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

What are the hourly rates of extension builders in Hertford?

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

Find extension builders in Hertford with MyBuilder

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

Step 2: Compare different extension builders in Hertford

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

Step 3: Hire Hertford extension builders with confidence

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

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

What to ask a Hertford extension builder before hiring?

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

An extension builder in Hertford 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 Hertford 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 Hertford?

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 Hertford 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 Hertford 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 Hertford

Can an extension builder in Hertford help with planning permission?

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

Many Hertford 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 Hertford help with materials and finishes?

Yes, most extension builders in Hertford 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.