Extension Builders in Hatfield

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 3.5 (14 reviews)

Easily find verified Hatfield Extension Builders. Just post your job to get quotes from MyBuilder's Extension Builders in Hatfield.

Select a service

How it works

Post your job for free

Tell us about your job, and we’ll alert suitable tradespeople in your area. It’s simple and free.

Tradespeople respond

Once your job is posted, you’ll get responses from interested tradespeople through the website.

Review profiles and choose

Browse profiles, work history, and feedback, then choose who you wish to share your details with.

Some of our top rated extension builders in Hatfield

2236 Results

Sort by:

Mars Building
Rating: 5 out of 5
Extension Builder in Hatfield
Mars Building is a local family run business with four generations of experience in the building and carpentry trade, all our workers are fully qualified and all our work is fully insured so if we're in your house you know you're in safe hands
Get in touch
Latest review:
Carpentry- 19 May 2014
Ricky did an excellent job of removing and replacing my rear garage door, as quoted and kept it clean.
B & M Home Improvement
Rating: 5 out of 5
Extension Builder in Hatfield
We are a local and reliable Plumbing, gas safe and Home Improvement Company in London and surrounding areas.I gained my experience working in the Plumbing and gas department. No matter whether you require help with plumbing, power flushing, boiler installation, bathroom, kitchen, extention, flooring we take on all building work. We provide a full interior decorating service for domestic and commercial.
Get in touch
Latest review:
Extensions- 10 Apr 2014
Max and Bob completed the extension on time and within budget. There were no hidden extras and despite Bob being on holiday for two weeks, Max worked hard and lon. The extension is 6m x 5m. There were issues with Building Control which Max sorted out and did everything to meet their requirements. The extension is built to a high standard, kitchen cabinets fitted well, tiling very good and we are pleased with the quality of their work. We are using B&M again as we are confident that although they are not tghe cheapest, the quality of their work is of a high standard. Besides, it is always a pleasure to deal with Max who is a gentleman, patient and listens to what is required.
UK NAMA Constructions Ltd
Rating: 5 out of 5
Extension Builder in Hatfield
Garden Fencing, Garden Decking, Artificial Grass, Wooden Floor Laminating, Decorating, Partitions.
Get in touch
Latest review:
Carpentry- 1 Sep 2026
Ali did a great job from start to finish and will definitely invite him back in the future!
GSrenovation
Rating: 4.9 out of 5
Extension Builder in Hatfield
We have 25 years of property renovation .During the last 15 years GSrenovation has specialised in fitting and renovating bathrooms, kitchens and extensions . We believe that our success stems from our exacting professionalism and true enjoyment of our work. We take as long as is needed to help customers from design through to completion. For peace of mind GSrenovation also provides 5 years guarantee with each installation. Sensible prices. Free quotation and advice.
Get in touch
Latest review:
Kitchen Fitting- 10 Jul 2024
George has done an excellent job. He is highly recommended, and his prices are reasonable.
PLG Works
Rating: 5 out of 5
Extension Builder in Hatfield
Property Care Specialists
Get in touch
Latest review:
Carpentry- 21 Dec 2024
Great work from Paolo in upgrading my side alley gate which was not an easy task given its size. Paolo gave good advice thoughout and supplied quality materials at a fair price.
Integrated Homes Ltd
Rating: 5 out of 5
Extension Builder in Hatfield
Integrated Homes Ltd are a family run construction founded in 1997. We specialise in extensions, conversions and renovations. We also work with architects so are able to assist with the design stage of your build.
Get in touch
Latest review:
We recently completed a large renovation which included extending our kitchen at the rear of the property, changing levels in the garden and converting our loft with an additional bedroom and en-suite. Ben, Steve and the rest of their team were amazing throughout. We had difficulty moving out of the property as our short term let fell through but the team worked tirelessly to enable us to ‘live in’ whilst much of the build was going on (which I know wasn’t ideal!) I highly recommend Integrated Homes as Ben and Steve were so knowledgeable, considerate and professional in their work.
1RightConstruct
Rating: 5 out of 5
Extension Builder in Hatfield
Extensions and Loft conversions , General building works, Kitchens and Bathrooms but can also carry out all Electrical jobs. We take great pride in our work and we enjoy to admire the transformation of projects from the beginning to end.
Get in touch
Latest review:
Extensions- 28 Jul 2023
We recently had the pleasure of working with Marius, his skills and craftsmanship were truly outstanding! Throughout the construction process, his attention to detail was commendable. Every aspect of the project, no matter how small, was meticulously executed. Marius' expertise was evident in the precision of his work, and it was clear that he takes great pride in delivering the best possible results. Marius kept us informed at every stage, patiently explaining the progress and addressing any questions or concerns I had. This level of transparency and professionalism made the entire experience enjoyable and stress-free. Marius' dedication to quality was evident in the choice of materials he used, ensuring the durability and longevity of the finished product. He had an eye for aesthetics, ensuring that the final result not only met functional requirements but also looked stunning. Not only was Marius skilled and reliable, but he also completed the project within the agreed timeframe and budget. His efficiency and commitment to deadlines were highly commendable. In summary, I can confidently say that Marius' work is truly great. His exceptional skills, attention to detail, clear communication, and commitment to excellence made the entire construction process a delightful experience. I highly recommend Marius to anyone in need of a reliable and talented builder.
Oliver Building Services Limited
Rating: 4.8 out of 5
Extension Builder in Hatfield
About Oliver Building Services Ltd, have been fitting kitchen and bathrooms for many years. We pride ourselves on being the go-to bathroom fitters for discerning . We specialise in all bathroom fitting and design services including: Please feel free to get in contact and we will be more than happy to come round to quote •Extension •Kitchen •Bathroom •Installation •Showers •Plumbing •Tiling •Plastering •Electrical •Painting & Decorating • Loft conversion •Roofing
Get in touch
Latest review:
Kitchen Fitting- 27 Nov 2024
We decided to fit a new kitchen in our tenanted house all done remotely via Australia. We are very pleased with the final kitchen and credit to Oliver for staying committed to the job. He communicated well throughout the process and as a result there were no surprises. This was not an easy process as we were dealing with a difficult tenant that we were trying to remove at the time. As a result the new kitchen was fitted but Oliver had to come back months later to finish the job. I know this was frustrating for him but with mutual respect and trust we got the job finished and I thank him for his patience and honesty. Would recommend his services.
Gary prime
Rating: 4.5 out of 5
Extension Builder in Hatfield
I have been actively involved in the construction industry for the past seven years, during this time I have gained experience in ground works, bricklaying and a variety of other trades and in the last two years I have been working in a supervisory role. I have worked on large construction sites as well as carrying out works on property refurbishments.
Get in touch
Latest review:
Groundwork & Foundations- 14 Aug 2019
Gary did an excellent job on the drainage, everything I asked of him. He was punctual and polite, wouldn't hesitate to hire him again.
D Bird carpentry and building LTD
Rating: 5 out of 5
Extension Builder in Hatfield
Hi were Dbird Carpentry & Building we are a family run company by myself Daniel and my brother Ellis. We take pride and love what we do! We will help you every step of the way through your project no matter the size.
Get in touch
Latest review:
Conversions - General- 21 Jun 2022
D Bird Carpentry completed the works on time and to a high standard. Dan and his team were a pleasure to work with and I would be happy to work with them again.
Hunbuild Ltd
Rating: 5 out of 5
Extension Builder in Hatfield
With over 25 years of experience in construction Open Plan Solutions is regarded as one of the most successful companies based in St. Albans and the surrounding counties working on both private and commercial property development. Open Plan Solutions provides a successful track record within a safe environment for the community it works in. Our speciality in providing construction needs makes us the first choice amongst customers looking for quality services. We strive to deliver all construction on time and to budget – and we consistently do, which is why our client base has continued to grow and we consider ourselves to be the number one building and construction experts covering St. Albans, Hertfordshire and surrounding areas.
Get in touch
Latest review:
Restoration & Refurbishment- 20 May 2026
Excellent service from a very professional team. They removed two chimney breasts for us, turned up right on time, and finished the work to a very good standard. They also did a great job of protecting the house from dust while working. We are very happy with the final result and would definitely recommend them.
TCBUILDERS LTD
Rating: 5 out of 5
Extension Builder in Hatfield
I have over 20 years experience in carpentry and joinery, building and refurbishment works, kitchens and bathroom installation, design and build, landscaping and garden rooms. I have worked in construction from an apprentice carpenter to site management on new builds and residential works. Delivering quality is my aim no matter size or cost.
Get in touch
Latest review:
Bricklaying- 26 Nov 2021
The guys did an excellent job re-laying the coping stones - responded promptly and came to price up quickly, friendly and professional! Wall looks so much better.
Aston Brickwork
Rating: 5 out of 5
Extension Builder in Hatfield
My name is Sean Aston I have been a bricklayer for 6 years now. I have all kinds of experience, from working on a large construction site to smaller jobs such as extensions ,porch's and garden walls. Any and all tradesmen I use will be full qualified I also have all relevant insurance .
Get in touch
Latest review:
Bricklaying- 30 May 2019
Sean was on time and very polite at all times. He completed the work very efficiently with no disruption whatsoever. He went out of his way to make sure the job was completed to our satisfaction. He cleared up afterwards and left the site very tidy. We would happily recommend Sean.
Phi Architectural Services Ltd.
Rating: 5 out of 5
Extension Builder in Hatfield
Phi Architectural Services Ltd. specializes in providing architectural, structural and project management services from small to big sized residential projects. With more than 12 years of experience and more than 500 projects ranging from refurbishment to new build houses and flats, the firm also have its own team of sub-consultants and contractors.
Get in touch
Latest review:
CAD / Drawings- 6 Mar 2022
Very helpful architect. Needed a little nudge occasionally due to busy season, but the work is delivered in time and to a high standard. I'm happy with the result.
FPA PROPERTY SERVICES LTD
Rating: 5 out of 5
Extension Builder in Hatfield
Here at FPA property Services LTD we pride ourselves on the prefect job, our company has grown in size due to our hard work & our outstanding standard of finish. we offer a bespoken services for any size job from the design stage to the complete build. We are proud members of the FEDERATION OF MASTER BUILDER & TRUSTMARK. The only Government Endorsed Quality Scheme. Our services cover commercial & domestic projects. We can take on any size job from a rental touch up to a complete new build.
Get in touch
Latest review:
Extensions- 15 Oct 2020
Frankie is an excellent builder, he is professional, polite and courteous and he has completed our extension to a very high standard. He is incredibly hardworking and has finished the extension at pace, but with care and attention. I have no hesitation to recommend Frankie and indeed have already done so, to friends and family.
Joe Hilley
Rating: 5 out of 5
Extension Builder in Hatfield
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.
Get in touch
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.

3.5

Top rated Extension Builders

Our Extension Builders in Hatfield, are rated 3.5 out of 5 based on 14 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 Hatfield?

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

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

What are the hourly rates of extension builders in Hatfield?

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

Find extension builders in Hatfield with MyBuilder

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

Step 2: Compare different extension builders in Hatfield

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

Step 3: Hire Hatfield extension builders with confidence

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

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

What to ask a Hatfield extension builder before hiring?

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

An extension builder in Hatfield 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 Hatfield 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 Hatfield?

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 Hatfield 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 Hatfield 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 Hatfield

Can an extension builder in Hatfield help with planning permission?

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

Many Hatfield 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 Hatfield help with materials and finishes?

Yes, most extension builders in Hatfield 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.