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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Rosewood Contracting Ltd
Rating: 5 out of 5
Extension Builder in Hertford
At Rosewood Contracting, we specialise in high end residential and listed buildings. Our team is dedicated to ensuring the successful completion of every project we undertake, with a focus on quality craftsmanship, attention to detail, and timely delivery.
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Latest review:
High-quality work on site, no issues with building control, all signed off straight away with no remedials. Would use again on future projects.
SSS Brothers Limited
Rating: 5 out of 5
Extension Builder in Hertford
At SSS Brothers we value our customers and work very hard to maintain their trust.With 15 years of experience,You can be assured that we will always provide quality workmanship, professional,courteous and timely service. Our prices are competitive, and our work is guaranteed. We will not be satisfied until you are! What We love most about renovating homes is working with our clients to create something spectacular.Every job comes with new challenges and opportunities to build something special.
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Latest review:
Extensions- 26 Aug 2021
SSS BROTHER, They worked incredibly hard to transform our house in a timely and efficient manner, all whilst being responsive to our concerns and preferences. The SSS BROTHER did a great job extending our kitchen and backroom to create a beautiful space that we love hosting family and friends in. The job was completed to a high standard and with good communication. Throughout the work, the workers were calm and knowledgeable and - importantly for us - helpful and offered their opinion of how the extension should be built.
LondoNest Ltd
Rating: 5 out of 5
Extension Builder in Hertford
Londonest is a London-based building company specialising in high-quality residential construction and renovation. We provide reliable and professional services including house extensions, loft conversions, full property refurbishments, kitchen and bathroom renovations, and general building works. Our team combines strong technical expertise with attention to detail to deliver projects that meet the highest standards of quality and safety. We work closely with our clients from the initial consultation through to completion to ensure every project is delivered on time, within budget, and to the client’s satisfaction. At Londonest, we pride ourselves on clear communication, transparency, and a commitment to excellent workmanship.
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Latest review:
We hired this builder for a 2-metre rear extension and a very large garage extension and we’re really happy with the result. The project needed a pile foundation which is a bit more complicated, but they handled everything very professionally. They listened to what we wanted and kept us informed at every stage, which really helped as we were living in the house while the work was being done. The team were friendly, easy to deal with and worked to a good standard. Overall a very good experience and we would happily recommend them.
LIVAHAUS
Rating: 5 out of 5
Extension Builder in Hertford
We are a professional team and we are very responsible, punctual and on time with our work .
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Latest review:
Tiling- 16 Feb 2026
Luis did an excellent job on my bathroom. He had to do a lot of prep work before starting the tiling, including rebuilding the floor and repairing the walls. At every stage he explained what needed to be done, ensured that I wanted to go ahead, listed the materials that would be needed, and the cost. It made a huge different to me that Luis was willing to source and purchase all materials; he checked in with me from the suppliers as to choice and cost, and sent receipts for every penny. I cannot recommend him highly enough, for his knowledge and expertise, his honesty and hard work, and also for being such a lovely person, nothing is too much trouble. I am delighted with my new bathroom, and am planning more home improvements with Luis, when he is free again!
TL BRICKWORK
No reviews yet
Extension Builder in Hertford
We are a family run business and have been trading for over 15 years in the construction industry, we have a very experienced workforce that are willing to go above and beyond for our customers. We specialise in all aspects of the construction industry.
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Cinnamon Design Studios Limited
Rating: 4 out of 5
Extension Builder in Hertford
Avenue Developments is a development consultancy, taking projects from inception to completion, in time and within budget. We offer our clients a tailored service, by evaluating each project to identify where value can be added and where potential problems may arise. We are committed to the quality of our professional service and have proven to satisfy our client's expectations.
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Latest review:
CAD / Drawings- 6 Dec 2019
Lack of professionalism! Called me at 2150 to say was interested in job, warning signal but said far enough so booked an appointment. He didn’t turn up nor respond to my texts asking if he was held up somewhere. I am not sure how trustworthy he is.
Fivepoint Trades Ltd
Rating: 5 out of 5
Extension Builder in Hertford
Our tradesmen have vast experience, whatever your job, be it large or small. We would be happy to work with you, see your project through from your idea to completion and add you to our list of satisfied customers. We offer a comprehensive service that will be tailored to your exact requirements.
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Latest review:
Restoration & Refurbishment- 3 Mar 2016
Paul has done the most incredible job on my listed cottage. He's passionate about the building, works to an extremely high standard and does what he says he is going to do, and more, without ever going over budget. Paul has completed a large amount of difficult structural work as well as fully re-fitting the kitchen and bathroom and I will be using him for much more work on the house in the future. I cannot recommend him highly enough.
Eddy Brickwork
Rating: 5 out of 5
Extension Builder in Hertford
With 10 years of experience in bricklaying, I provide top-quality craftsmanship for both residential and commercial projects. From building sturdy foundations to creating stunning brick facades, my work combines precision and durability. I take pride in delivering results that meet your exact specifications and exceed your expectations. Whether you need new construction, repairs, or custom brickwork, I'm dedicated to providing reliable and efficient service. Let's bring your vision to life with expert bricklaying skills!
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Latest review:
Bricklaying- 4 May 2026
Eddy came to do the job as arranged but unfortunately it turned out to be a much bigger job than planned. We agreed a new price and the work was completed a few days later to a very high standard. Eddy was very helpful and he and his colleagues worked hard and cleared up afterwards. Excellent job thanks.
Graal Structural Engineering Ltd
Rating: 5 out of 5
Extension Builder in Hertford
We offer Structural Desing and Calculations for New Build, Extensions, Loft Conversions, etc. Detailed drawings and calculations for Building Control. We offer one-stop-shop services including, planning applications, architectural & structural design, cost estimations, project management and construction works.
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Little Acre Homes Ltd
Rating: 5 out of 5
Extension Builder in Hertford
Little Acre Build are able to undertake all aspects of building from a new bathroom or kitchen to a complete new build home. We are members of the Federation of Master Builders and have well over 30 years experience in the industry. We have a large team of tradesmen on hand, ready to undertake and complete your project on time, on budget and to the highest of standards.
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Latest review:
Carpentry- 22 Nov 2022
Kris was excellent, he came and resolved a problem we had with our front door swiftly, tidily and professionally. We have a newborn baby and were really struggling to get the front door open and closed due to swelling, so this was so appreciated. Thank you again Kris, would highly recommend for any building/carpentry work and Kris/Little Acre build will be our first point of call when we require any work.
S R Deane Building Services
Rating: 5 out of 5
Extension Builder in Hertford
S R Deane Building Services Expert craftsmanship. Honest service. Beautiful results. At S R Deane Building Services, we believe your home deserves our full attention, which is why we take on one project at a time. As a small, family run business, we bring skill, care and clear communication to every stage of your build. From extensions, kitchen transformations, and bathroom makeovers to landscaping, we deliver quality workmanship with a personal touch. Our goal is simple: to make your vision a reality, with results that last and a process that is stress free. With S R Deane, you are never just another job. Your project is our only priority.
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Latest review:
Kitchen Fitting- 8 Oct 2018
Had three quotes to fit new Wrens kitchen,and picked Stanley even though his quote was not the cheapest.He just seemed a nice guy,and he is.The work was carried out quickly and cleanly,arriving about 08.15 finishing about 17.00.A few minor things need to be carried out mainly due to wrens not delivering all trim but have been told will return as soon as it arrives. I would not hesitate to use Stanley again.Will update when complete.
Kalafuldeco
Rating: 5 out of 5
Extension Builder in Hertford
❌ We Turn Houses Into Kalaful Homes ❌ 350+ REVIEWS / 5 STAR RATING X⭕️X - WE'LL MATCH ANY REASONABLE QUOTES - X⭕️X Hi, This is Cristina in The Office. We Specialise in Flooring / Painting Int / Ext Building Services - Kitchens / Bathrooms / Lofts / Extensions.etc +£25 Each - Plane / Trimming Doors if required +Removal £50 - £75 Each Room + Disposal £100 - £300 If Required FLOORING ESTIMATES / WE ALSO DO PAINTING Fitting Beading / Scotia is Free, Inc in the Job Fitting Skirting is Min £200+ / Hallway Min £250+ Kitchen / Bathroom Min £200+ Laminate / Lvt Click ( Sub Floor Must be Reasonablly Level ) Straight Runs - £20m2 / Inc Hallways £25m2+ MIN £100 UPTO 5m2 Engineered Click Straight Runs - £25m2 / Inc Hallways £30m2+ MIN £150 UPTO 5m2 Hardwood T&G / Tongue & Groove Straight Runs - £30m2 / Inc Hallways £35m2+ MIN £200 UPTO 5m2 Herringbone - £40 - £45m2+ Cash Deals + 20% on Bank Transfer or if Invoice is Required - Payments To be Made End Of Each Day ❌ Must be Able to Provide Off Street Parking / Permits as The Crew Needs Access to The Vehicle at all Times. Thanking you in Advance Christina & Kam @ Kalaful Deco PAINTING ESTIMATES PAINTING ONLY - NO WALLPAPERING We also do Flooring / Gardening / Man & Van + Handyman Jobs Single Room - £300 Inc Minor Filling & Sanding / All White ) + £75 / 2 Colours / Woodwork £50+ £150 Extra To Paint on Fresh Plaster Living / Double Room - £400 Inc Minor Filling & Sanding / All White + £75 / 2 Colours / Woodwork £50+ Hallways- £450 - £750 Inc Working around 4-8 Doors Thanking you in Advance Christina & Kam @ Kalaful Deco
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Latest review:
Hard Flooring- 11 May 2026
Kalafuldeco has installed some wooden floor in my laundry room, great communication and nice job 👍
R&S construction services
Rating: 5 out of 5
Extension Builder in Hertford
I have been for 20 years now in building works i like what i do and i like make other people to have they dream house to make them happy
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Latest review:
Great service received. Called Martin out that day and he fixed my front door straight away. Great price and great service received will be using him again in the future.
JR Brickwork
Rating: 5 out of 5
Extension Builder in Hertford
I take on work covering all aspects of bricklaying, repointing, patio laying and any general maintenance work.
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Latest review:
Jack was punctual and professional and finished the work to a high standard. I will happily be recommending him to friends and family.
Concorde construction Ltd
Rating: 5 out of 5
Extension Builder in Hertford
We cover all types of construction. From your small handyman jobs to building large extensions and summer houses. We specialise in all types of carpentry, bricklaying and decorating. We can take care of all of your building needs with plenty of recommendations. Look forward to hearing from you.
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Latest review:
Extensions- 5 Oct 2022
I am very pleased with the work Josh and his team did in building my rear extension. They were a friendly and hard working bunch and very respectful of my space. Josh did a great job in project managing the work and making sure things were progressing as planned. Any snagging items were dealt with promptly. I would hire them again if required and recommend them to anyone who wanted to have building work done.
Capital Prime Ltd
No reviews yet
Extension Builder in Hertford
Capital Prime Fit Out Solutions is a building contractor providing a range of construction services to commercial and residential fit out and refurbishment projects across London. Our projects range from supply and install of bespoke kitchens and built-in furniture to complete turnkey shopfitting solutions.
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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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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 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.