Extension Builders in St Helens

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

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Some of our top rated extension builders in St Helens

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Ab builders
Rating: 4 out of 5
Extension Builder in St Helens
RT Builders . We are a highly experienced building and refurbishment company with over 50 years in the trade, covering Liverpool, Wirral, Warrington and surrounding areas. We specialise in home improvements including full refurbishments, extensions, structural alterations, bathrooms, kitchens and all general building work. From small repairs to full property renovations, we manage projects from start to finish with a reliable, skilled team. We take pride in delivering clean, organised work and treating every home with respect – as if it were our own. Our focus is on quality workmanship, clear communication …and completing jobs on time and within budget. We are fully insured and committed to providing a professional, stress-free service from first quote to completion.
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Latest review:
Plumbing- 16 Aug 2026
Arrived on time and the job was completed within an hour. Very pleased. Recommended.
Aztec Building & Construction Ltd
No reviews yet
Extension Builder in St Helens
Our team have developed a wealth of project management experience working within the construction industry for over 30yrs, supporting major house builders deliver new homes in addition to working with individual homeowners releasing their dreams of new extensions, kitchens, bathrooms, or general improvement works. We pride ourselves on delivering complete cost transparency with detailed quotations/cost estimates issued to clients throughout works, resulting in complete peace of mind.
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Nat jermyn
No reviews yet
Extension Builder in St Helens
First fix and roofing
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D H building contactors
No reviews yet
Extension Builder in St Helens
I have been in Buisnes for over 30 years Building extensions so very experienced. Highly skilled at all trades no job to big.
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GT Brickwork and Damp proofing
Rating: 5 out of 5
Extension Builder in St Helens
With over 20 years of hands-on experience, GT Brickwork & Damp Proofing delivers high-quality workmanship across all aspects of brickwork, structural alterations, and property repairs. We provide reliable, professional services for domestic and commercial customers, taking pride in completing every job to a high standard from start to finish. Our services include: Brickwork and brick repairs Repointing and restoration work Plastering and internal finishing Damp proofing and damp repair solutions Structural steel work and RSJ installation Knock-throughs and open-plan alterations Structural repairs and supporting works Wall removals and load-bearing alterations General building and renovation projects Whether it’s a small repair or a full structural transformation, GT Brickwork & Damp Proofing combines experience, attention to detail, and dependable service to deliver lasting results. We are committed to quality workmanship, honest advice, and customer satisfaction on every project.
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Latest review:
Repointing- 28 Jul 2026
Gary was very friendly and professional and got stuck right into the job. He gave us assurance and made sure that we were happy customers too before completing. Would recommend 👌🏾
Jonathon Chedotal
Rating: 1 out of 5
Extension Builder in St Helens
Hello I am Jonathan I am a bricklayer/builder Very experienced team all family willing to do the extra time and hard work to make ur dreams come true we as a family building group will make sure ur home is left the way we would leave or own 110% on every job carried out never left a job undone and every job we ever built had been signed off or customer had been 100% satisfied with or work Can look up all my on instagram @JRCBUILDERS
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Latest review:
Bricklaying- 28 Feb 2024
He had the window foe the opening and still made it 70mm to big, he didn't finish the aco to the drian and it runs down both ends so it pools, they done a concrete slab in the back garden it was level or square I told him twice before he pored the concrete and it still wasn't right, he was meant to take the rubbish with hi. An didn't,before all this I gave his number to my mate who wanted work goin he had problems with Jonathan as well, wouldn't recommend him.
C Tickle Building & Groundworks
No reviews yet
Extension Builder in St Helens
C.Tickle Building & Groundworks is a small building firm covering St helens and surrounding areas. We have 13 years experience in the building trade and have NVQ level 2 qualifications in brickwork and NVQ level 3 advanced brickwork. We undertake a wide variety of work from garden walls to complete extensions.
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Emanuel Paun
No reviews yet
Extension Builder in St Helens
We provide the following : MAN & VAN SERVICES HOMES REMOVALS GARDEN RUBISH REMOVALS HOUSE CLEARANCE WE ALSO BUILD: EXTENSIONS DRIVAWAYS PATIOS BLOCK PAVING, CAR PARKS, GARDENS GARAGES JET WASH CLEANING RENOVATIONS REFURBISHMENTS
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Hawkins Property Maintenance
Rating: 4 out of 5
Extension Builder in St Helens
Property Maintenance Fence painting Interior painting Gardening Skirting board fitting Door fitting
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Latest review:
Painting & Decorating- 17 Jul 2023
Excellent service. We are very happy with the paint job and Callum was very nice and professional.
SMH JOINERY
Rating: 4.3 out of 5
Extension Builder in St Helens
Hi,i have been a tradesman for 6 years in this time i have worked all over the country and gained lots of experience . I undertake 1st and 2nd fix projects including studwork, doors, skirting, laminate floor laying and other joinery tasks and i also multi skill. I am a polite and reliable person whom always works to high standards. I offer a one to one friendly service, from start to finish i aim to please. No job too big or too small
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Latest review:
Carpentry- 19 Nov 2021
Decent lads who completed the required job to the required standard and charged the going rate. No issues here and would use again.
Wayne.thistlethwaite
No reviews yet
Extension Builder in St Helens
Semi ritered carpenter and joiner 52 years experience in all aspects of the building industry from domestic, door fitting kitchen fitting extentions, garage conversions, All work done to a high standard
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Roww home improvements
Rating: 5 out of 5
Extension Builder in St Helens
Roww home improvements can complete a number of jobs, All home improvement work undertaken. From windows and doors, Fascia soffits gutters. Decking fencing artificial grass, skirting arcs, kitchens, flooring and more
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Latest review:
Kitchen Fitting- 2 Aug 2023
This was our first time using Ryan and he did an absolutely fantastic job. He's got a great manner and is courteous, friendly, experienced and helpful. His quote was competitive and he even offered a discount. His joinery work and kitchen fitting was to a very high standard. He was punctual, reliable and completed the work a as soon as possible. We were very impressed and would definitely use him again! Thank you and good luck!
Francis Aldridge Building
No reviews yet
Extension Builder in St Helens
Caters for all Roofing and Building Needs - with over 20 years experience
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OJ Joinery & Roofing LTD
New on MyBuilder
Extension Builder in St Helens
OJ Joinery & Roofing Ltd is a trusted, local building and home improvement company based in Widnes, providing high-quality workmanship across joinery, roofing, loft conversions and home extensions. With a strong focus on quality, reliability and attention to detail, we undertake projects of all sizes — from roof repairs and bespoke joinery to complete loft conversions and property extensions. We work closely with our customers from start to finish to create practical, well-finished spaces built to last. Our services include: • Loft conversions • Home extensions • New roofs & roof repairs • Fascias, soffits & guttering • Bespoke joinery & carpentry • Doors, staircases & skirting • Kitchen fitting • General building & renovation work Based in Widnes and serving the surrounding areas, OJ Joinery & Roofing Ltd is committed to delivering professional workmanship, honest service and results our customers can be proud of. Quality Work. Built to Last.
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Built Wright Construction Ltd
Rating: 5 out of 5
Extension Builder in St Helens
Bricklayer with 29 years experience.I am honest and reliable and will happily come and give you a free quote and discuss your plans/job with you. No job is too small. Fully insured. Built Wright Construction Ltd is my family run business.
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Latest review:
We would happily recommend Built Wright Construction Ltd for any building works. We are very impressed with the customer service and the quality of workmanship. Built Wright Construction Ltd are trustworthy and reliable. We will certainly be asking Built Wright Construction Ltd to undertake any future building work required. Highly recommend.
NCH Plasterinh service
Rating: 5 out of 5
Extension Builder in St Helens
New company name, city coating, I can’t change the name on here for some reason, With over 23 years of experience in plastering and rendering, I take pride in delivering high-quality workmanship on every project. I am fully insured, giving you complete peace of mind from start to finish. I specialise in silicone render systems, known for their durability, weather resistance, and clean, modern finish. I also offer expert application of K-Rend and monocouche renders, providing long-lasting and low-maintenance exterior solutions. Inside the home, I cover all aspects of internal plastering—from skimming and dry lining to full room renovations—ensuring smooth, flawless finishes ready for decorating. To help you visualise the final result before work begins, I can provide AI-generated images of rendering styles and finishes. This allows you to explore different options and make confident decisions about your property. Whether it’s a small repair or a full property transformation, I focus on reliability, attention to detail, and a professional finish every time.
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Latest review:
Plastering- 29 Jun 2026
The job was seamless from start to finish. Great communication, accurate dates, and the work completed in no time with minimal mess and scaffolding and skip also removed with no issues. Great service would definitely recommend.

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.

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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.