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

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All in one builders
Rating: 5 out of 5
Extension Builder in Hertfordshire
At All In One Builders we take pride in being your trusted partner for all your construction needs. With a wealth of experience and a commitment to excellence, we specialise in a wide range of building services tailored to meet your unique requirements.
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Latest review:
Akash made sure the job was complete exactly how he said it would be, he provided reliability during the installation of our kitchen and answered all questions very professionally. The builders were well aware of the conversations my mother and I had with Akash and so put our mind at ease. The installation itself was very quick (the tear down was very much completed in a few hours) and installed over the weekend. They were very hygiene aware and set up a cover between the kitchen and the rest of our house and didn’t disrupt our home living. They cleaned up before they were gone to very high standards without us even asking them too, all I’m sure is due to Akash’s excellent organisation skills.
Craft Construction Ltd
No reviews yet
Extension Builder in Hertfordshire
Craft Construction have been running since 2011 and have worked on many large projects from full refurbs to removing complete roofs and replacing with new we can provide photographic evidence of completed works.
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London Property Services
No reviews yet
Extension Builder in Hertfordshire
I have been a general builder for over 20 years, we like to take on extensions, interior plastering and exterior rendering, drive ways, patios and garden walls as well as fencing. We treat houses like our own house leaving them clean and tidy to the best standard.
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Danimatt Building
No reviews yet
Extension Builder in Hertfordshire
I am a hard worker and experience on construction projects,
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PMC Developments
No reviews yet
Extension Builder in Hertfordshire
Carpenter from Ireland living and working in London since 2012
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Regen fm ltd
No reviews yet
Extension Builder in Hertfordshire
We are a commercial and residential facilities management company We cover the following services; All statutory compliance under service agreements, commercial and residential: L8 water treatment Fire alarm systems Smoke vent systems Sprinkler systems Emergency light systems With/without service agreements commercial and residential: All electrical installation, repairs, maintenance, EICR and fixed wiring etc insepection/certification All heating system installation, modifications, repairs, maintenance All gas installations, repairs, maintenance and gas safety certification HIU install, repairs and servicing MVHR installation, repairs, servicing and certification BMS modifications, install, servicing AC install, servicing, maintenance and certification AHU modifications, servicing, maintenance Chiller unit modifications, install and maintenance Residential glazing Loft conversions Extensions Commercial cleaning Pest control And more... We provide only award winning engineers and contractors that do not cut corners and get the job done first time and right with no comebacks
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Curraj Construction Ltd
No reviews yet
Extension Builder in Hertfordshire
What sets Curraj Construction apart is our dedication to quality and client satisfaction. We don’t just build structures - we build long-term relationships. Every project we take on is managed in-house by qualified, skilled professionals who bring years of experience and a hands-on approach to ensure smooth delivery. Our work is fully insured and compliant with UK building regulations. We never compromise on materials or workmanship. We understand that your home is your most valuable asset, so we treat every project with the respect it deserves - whether it's a small renovation or a large-scale build. With transparent quotes, reliable timelines, and an approachable team, we make construction feel simple, not stressful.
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Building services 4U LTD
No reviews yet
Extension Builder in Hertfordshire
professional builders. on the market for over 20 yrs. we work any where in London and around it. we do any type of building work including bathrooms kitchens extensions etc. we as a builders are very flexible with the costumer. costumer always comes in the first place and try our best to keep him happy. we also work with other big branches like Wickes and B&Q. on electrical side we have a team of electrician that works on site every day so we are looking to extend ourselves a little. very capable team of builders and electricians.
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ANM Efficient Solutions
Rating: 4.9 out of 5
Extension Builder in Hertfordshire
Hello, Welcome to ANM Efficient Solutions profile– Expert Carpentry & Joinery Services At ANM Efficient Solutions we specialise in high-quality woodworking and carpentry services, offering expert craftsmanship in: ✔ Kitchen Fitting – Precision installations tailored to your space and style. ✔ Door Installation – Interior and exterior doors fitted with accuracy. ✔ Floor Installation – Hardwood, laminate, and engineered flooring for a perfect finish. ✔ Custom Woodworking – Bespoke carpentry solutions for homes and businesses. ✔ Framing & Structural Work – Strong, reliable framing for new builds and renovations. ✔ Roof Shell Construction – Expertly built roof structures for durability and safety. With years of experience, a keen eye for detail, and a commitment to customer satisfaction, we ensure every project is completed to the highest standard. Whether you’re renovating your home, upgrading your business, or building from the ground up, ANM Efficient Solutions is your trusted partner in carpentry. Regards ANM Team
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Latest review:
Carpentry- 23 Jun 2026
Alina, Max and the team have been amazing. Gave a great price, turned up and began working immediately. Quality is fantastic, so much so we have asked them to complete additional works. They arrive on time, work hard all day and left the house and garden in a clean presentable manner. 100% recommend them, multi skilled, polite, and reliable team that deliver quality work at reasonable rates. Will use them again and have already recommended them to friends and family
City Building and Roofing Ltd
Rating: 4.9 out of 5
Extension Builder in Hertfordshire
City Building and Roofing Ltd provides professional roofing, refurbishment and building services across London and Surrey. Our services include roof repairs, new roofs, flat roofing, GRP roofing, roof refurbishment, guttering, fascias and soffits, chimney work, damp proofing, brickwork and full property refurbishment. We work with homeowners, landlords and commercial clients, delivering reliable workmanship, honest advice and free no obligation quotes.
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Latest review:
Damp Proofing- 26 Mar 2022
Good,timely and clean workers. Worked hard and efficiently with clear explanations. Very satisfied with the finish.
Ram design and build Ltd
No reviews yet
Extension Builder in Hertfordshire
A construction company based in NW London. No job is too big or small. From log conversion to maintenance £ everything in between. Loft conversion Decorating & paint Garden clearance & Landscape Repairs and maintenance Plumbing
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P & A DEVELOPMENT AND MANAGEMENT LTD
No reviews yet
Extension Builder in Hertfordshire
P & A DevMan specialises in house extension, loft conversions, refurbishment, and property maintenance. Our specialist craftsmen complete your renovation to the highest finish, and our experienced site managers and project managers coordinate everything to ensure the projects run smoothly. We take on the big jobs that will increase the value of tired buildings but we give the same attention to smaller commissions, too.
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Imeraj
No reviews yet
Extension Builder in Hertfordshire
I am a construction worker . I had 5 years working for a civil engineering company like supervisor . I have lot of skills referring construction ( steel erection , timber works , underground works etc ) . Last year i finished level 1 and 2 in plumbing aswell to complete more professional skill and manage the common problems in most of new and existing properties . Contact me if you have something and let proceed to fix or upgrade your properties .
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Emanuel
No reviews yet
Extension Builder in Hertfordshire
I am a skilled tiler with over 10 years of experience in wall and floor tiling, working with all types of materials including porcelain, ceramic, natural stone, marble, and mosaic. I have experience in large projects (clothing stores, showrooms, etc.). I also offer a full range of renovation services such as plastering, drywall (plasterboard), painting & decorating, wallpapering, garden work, and house or loft extensions. I take pride in delivering high-quality finishes, working cleanly, and completing every job on time. Customer satisfaction is always my priority
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fitim loka
No reviews yet
Extension Builder in Hertfordshire
services Whatever needs you have, please don’t hesitate to give us a ring and we will provide honest and professional advice. General Brickwork We can undertake small bricklaying jobs, such as brick crack stitching and repair, as well as larger house builds or commercial projects. Our current workforce currently has combined experience in bricklaying and masonry restoration. By understanding the different aspects of site builds, including timings and work schedules, we can ensure that every site is delivered on time and to the highest of standards. Extension We will be with you every step of the way, delivering building solutions and our expert extension building advice to help construct the extension of your dreams. Our contemporary home extension solutions are available in multiple finishes and style, which makes them perfect for your home extension project because they can blend in with your existing property style. You have control over dimensions, finishes and extension style. Call us to get a free home extension quote today.
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Bogdan
New on MyBuilder
Extension Builder in Hertfordshire
We do everything if you need bricklaying extension gardens painting decoration etc contact us for the best quality
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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.