Extension Builders in St Helens

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.7 (13 reviews)

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

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 St Helens

644 Results

Sort by:

PJL Building Works
Rating: 5 out of 5
Extension Builder in St Helens
Hello I'm Paul. Thanks for reading our profile, We have 25 years experience in building, with vast experience in most trades. We are fully insured local builders, our line of work is residential and commercial Extensions, Garden walls, Structural alterations, New builds, Outbuildings, Conservatory bases, Conversions. I like too run my business the way I’d want a builder too treat me. Quality workmanship, Reliability, Site left clean and tidy daily, Minimum stress for customer, Everyone happy on completion of work.
Get in touch
Latest review:
Extensions- 9 Jan 2025
I will attach some pictures and can decide yourself, I need to do anther extensions he is my man . Thanks you and team for your work 🙏
Providence Property
Rating: 5 out of 5
Extension Builder in St Helens
Providence Property is an innovative, committed and efficient contractor. We. Offer solutions to all types of building requests including extensions,refurbishment,loft conversion both attic and dorma. All our tradespeople are timeserved and fully supervised from start of works upto the final handover with building control.
Get in touch
Latest review:
Extensions- 3 Aug 2017
Good, professional, polite and tidy workers. Work quickly and efficiently. A big thank to Phil, Billy, Nigel and Fred for all the work.
Manchester Plumbing Limited
Rating: 5 out of 5
Extension Builder in St Helens
Hi, we are a small team of tradesmen with the main area of activity being plumbing and heating , kitchen and bathroom fitting . We have over 50 years of experience combined in the trade. Contact us for a free quote .
Get in touch
Latest review:
Plumbing- 10 Jul 2023
Reasonable price, excellent work completed and very helpful in ensuring everything was correct. Arrived on time and even cleaned up before they left.
Ste Leatherbarrow building and roofing
Rating: 5 out of 5
Extension Builder in St Helens
I am a self employed builder and roofer. I specialise in porches, conservatories, Extension’s big or small. I also fit double glazing, fasias and soffits
Get in touch
Latest review:
Extensions- 13 Jul 2024
Late review. Ste and the fellas built a wrap-around single storey extension for us in 2021. I can't recommend him highly enough. It wasn't the easiest build due to poor drawings we had from the architect, but Ste went above and beyond to make sure we had the extension that we wanted. Ste and the lads were positive, friendly and always had solutions to any challenges that came up. They also stuck to the original quote as much as possible, despite rising costs of materials at the time (2021). My wife and I worked from home for the entire build (about 4 months start to end), which wasn't ideal, but Ste and lads helped to make it work for us. 3 years on and we're well and truly settled and loving the extension. We're not sure that we'd ever want to go through a similar build again (at least not while living and working from home full time), but if we did then we would want Ste to do the job. 5 stars.
Akjbuild
Rating: 5 out of 5
Extension Builder in St Helens
Hi my names Ashton from Akjbuild I’m a general builder I’m never late and I do what I say I’m going to do
Get in touch
Latest review:
Extensions- 18 Jul 2024
Really well. Ash was great.
PACT Construction
Rating: 5 out of 5
Extension Builder in St Helens
18 years experience in building, civil engineering and groundworks. Specialists in drainage, foundations, brickwork, scaffolding and paving. No job is too small and it will be given the same attention to detail as a multi million pound scheme.
Get in touch
Latest review:
Groundwork & Foundations- 22 Feb 2017
Kevin provided a quick response and competitive quote. He kept us informed about the delivery of materials and arrived on site when he said he would. The works were completed to a high standard within 1 day and the site left clean and tidy.
D.C. BUILDERS (UK) LIMITED
Rating: 5 out of 5
Extension Builder in St Helens
My name is kevin abbott Ian a bricklayer by trade.i have been self employed for 35 years and been in the building trade for 40 years. I am also a fully registered site manager.I live in st.helens and have worked on many projects big and small.I own a small building company and at the moment we are just finishing a bedroom extension at one property and doing a driveway at another house both in st.st.helens but I dont mind travelling.
Get in touch
Latest review:
Conversions - General- 7 Mar 2021
Used Kevin for a conservatory roof conversion and the quality of the work is excellent. Kevin and his team are very thorough and knowledgeable which gives you confidence. Wouldn’t hesitate to recommend Kevin whatsoever and if we need any further work we’ll be contacting Kevin without doubt. Looking forward to many years of enjoying living in our new space created by Kevin ✅
CL Brickwork
Rating: 5 out of 5
Extension Builder in St Helens
Thank you for taking time to look at my profile. I am a very experienced builder of around 25 years. I have covered many areas of work, including Extensions, Garage conversions and garden walls. l have also done lots of remedial work such as rebuilding old brick walls and repointing old brickwork.
Get in touch
Latest review:
Extensions- 25 Nov 2025
Colin and Rob were excellent from start to finish. They kept us up to date at all points of the build and the finish was excellent. Would highly recommend for any future plans you may have.
PRO-FIT-UPVC LTD
Rating: 4.9 out of 5
Extension Builder in St Helens
Pro-Fit-uPVC & Building Services is a family run business with over 40 years experience within the uPVC & building trade.We are NVQ certified installers and our experience shows on our jobs as we take extreme pride in our workmanship. All jobs are finished to an exceptional standard & we have hundreds of satisfied customers. We only use the best materials & we will NOT be beaten on price. We are also a member of CERTASS-the certification body that ensures our work meets all Building Regulations.
Get in touch
Latest review:
Extensions- 18 Jul 2025
I recently had my conservatory remodeled by Pro-Fit UPVC, and I couldn’t be happier with the service. Lee and Chris were fantastic throughout the entire process—communication was clear and consistent, and they were incredibly accommodating, even with last-minute design changes, which they promptly incorporated into the quote. The quality of the workmanship was outstanding. Lee took great care to ensure every small snag was resolved before the project was signed off, which gave me complete confidence in the final result. Pro-Fit UPVC is a genuine, family-run company, and it’s refreshing to deal with such honest, reliable professionals—something that can be hard to come by in the trade industry. I’ll definitely be using them again and wouldn’t hesitate to recommend this exceptional company to others.
J & H Joinery & Building
Rating: 4.8 out of 5
Extension Builder in St Helens
With 25 years experience and fully insured our projects include both new and repairs/restorations. We can plan, manage and create beautifully crafted projects. We offer an end-to-end client experience that includes clear communication, budgeting and solid workmanship every time.
Get in touch
Latest review:
Carpentry- 12 Oct 2018
BEWARE COWBOY. Inept Joiner with very little experience, doesn’t know what he is doing, says he can do a job but when you scratch the surface this guy is a fraud!!!! Waste of time please don’t be fooled....
e.lyon construction
Rating: 5 out of 5
Extension Builder in St Helens
brickwork and blockwork for over 40 years. working on commercial and domestic . Extentions , garden walls and all aspects of brickwork. Damp proofing from tanking to dpc, all aspects of damp treatments. Patterned imprinted concreate ..repairs also carried out.
Get in touch
Latest review:
Bricklaying- 19 Aug 2025
I had to postpone the job but the business was friendly on phone and good communication
AJ Services Building & maintenance
Rating: 5 out of 5
Extension Builder in St Helens
We've been in business for many years and it's grown bit by bit every year, my son also joined in partnership alongside me who is expanding the company over time. We take pride in doing a 1st class job every time and all the time. A happy customer is a happy us at the end of the day. We offer nothing less for our customers
Get in touch
Latest review:
Fencing- 25 May 2026
I could only recommend them. They done a great job
BJL Groundworks
Rating: 5 out of 5
Extension Builder in St Helens
We provide our services no matter what the size of the project. We are fully equipped, skilled, and able to provide all types of groundwork, excavation, clearance and demolition services. We serve domestic and commercial clients from Merseyside, Lancashire, and the surrounding areas.
Get in touch
Latest review:
Demolition- 11 Jul 2025
Very very good.
Imperial construction
Rating: 5 out of 5
Extension Builder in St Helens
Imperial Construction is a trusted, professional building company specializing in high-quality home extensions that transform spaces and enhance lifestyles. With a commitment to craftsmanship, reliability, and customer satisfaction, we deliver tailored solutions to meet your unique needs, ensuring seamless project management and exceptional results. Let us bring your vision to life with our expertise in creating stunning, functional extensions that add value to your home. Contact us today to discuss your next project!
Get in touch
Latest review:
If you’re after a smooth, stress-free building experience, I can’t recommend Imperial Builders enough. Our project was a tricky one — an extension and renovation on an old property — so there were plenty of challenges along the way. But John handled everything brilliantly. He managed the whole build from start to finish, brought in skilled tradesmen, and made sure every detail was taken care of. The end result looks amazing and blends the old with the new perfectly.
RT Diamond Drilling Ltd
Rating: 5 out of 5
Extension Builder in St Helens
We are a diamond drilling and sawing company. We can core holes in brick, stone, concrete & block walls & floors for extractor fans, waste pipes, boiler flues, soil pipes, etc. in a quick, clean and efficient manner. We also saw through concrete floors, remove walls, fix lintels, fix steels for extensions, repoint brickwork and cover general small scale demolition work.
Get in touch
Latest review:
Conversions - General- 10 May 2024
Carl has come out explained everything to me what's he needs to do to complete the job for me and giving me a good price. Job starts in a couple of weeks
Northern build
Rating: 5 out of 5
Extension Builder in St Helens
Joiner by trade but have coved all aspects of building as I help build extensions. Recently gone self employed.
Get in touch
Latest review:
Carpentry- 5 May 2026
The job went very well, very pleased. Definitely hire for future work.

4.7

Top rated Extension Builders

Our Extension Builders in St Helens, are rated 4.7 out of 5 based on 13 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 St Helens?

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 St Helens 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 St Helens who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in St Helens?

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

Find extension builders in St Helens with MyBuilder

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

Step 2: Compare different extension builders in St Helens

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

Step 3: Hire St Helens extension builders with confidence

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

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

What to ask a St Helens extension builder before hiring?

Before hiring an extension builder in St Helens or extension building company in St Helens, 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 St Helens?

An extension builder in St Helens 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 St Helens 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 St Helens?

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 St Helens 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 St Helens 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 St Helens

Can an extension builder in St Helens help with planning permission?

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

Many St Helens 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 St Helens help with materials and finishes?

Yes, most extension builders in St Helens 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.