Extension Builders in St Helens

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.7 (12 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

643 Results

Sort by:

C&H maintenance
No reviews yet
Extension Builder in St Helens
We are a small family business, and we do everything we the most attention to details and with the best care.
Get in touch
D&P FIX
No reviews yet
Extension Builder in St Helens
Welcome to D&P FIX – Your All-in-One Property Solution. At D&P FIX, we believe in Design & Precision. Whether you think of us as Drylining & Partitioning or Decorating & Painting, the result is the same: high-quality craftsmanship tailored to your needs. Now working as a skilled duo, we have combined our years of industry experience to offer a comprehensive range of domestic and commercial services. From the structural bones of a building to the final decorative flourishes, we handle it all with a commitment to honesty, hard work, and reliability. Our Core Services Include: Drylining & Partitioning: High-quality plasterboarding, ceiling works, party walls, media walls etc Interior Finishing: Professional tiling, floor laminating, and expert painting/decorating. Outdoor Maintenance: Full gardening services and exterior property improvements. No project is too small or too large. Whether you need an interior renovation or an outdoor refresh, you can count on us for a hassle-free experience and a professional finish delivered on time. Get in touch today for a free, no-obligation quote. We look forward to working with you!
Get in touch
AE QUALITYBUILD LTD
No reviews yet
Extension Builder in St Helens
AE QUALITYBUILD LTD is a trusted building company run by Adam and Ethan, specialising in all aspects of bricklaying and plastering. as experienced general builders, we also offer a full range of services including kitchen fitting and complete property renovations. we pride ourselves on high quality workmanship, reliability, and attention to detail on every project, big or small. fully insured with public liability insurance and a combined experience of 20 years in the industry.
Get in touch
Prestige property services
No reviews yet
Extension Builder in St Helens
Customer satisfaction is no1 priority in this company! No hidden costs! The price is the price! Im the Owner of the buisness and I work on the job everyday to make sure Customer is always kept upto date with progress and plans of any job undertaken
Get in touch
OHG Design@Build solutions
No reviews yet
Extension Builder in St Helens
Hi we are Building Contractors with 40 Years experience we specialise in new builds extensions and commercial building Maintenance
Get in touch
Stevens brickwork
No reviews yet
Extension Builder in St Helens
We are extension specialists with over 35 years in the trade
Get in touch
elttar group ltd
No reviews yet
Extension Builder in St Helens
Hi we are a fully insured building company specialising in extensions, dwelling houses and commercial properties. We have over 40 years experience in this field, from helping with the planning and offering advice on this, to design and build. Building work carried out to top specification, whilst using only bona-fide tradesmen, meeting all health and safety regulations.
Get in touch
linik construction ltd
No reviews yet
Extension Builder in St Helens
Here at linik construction we pride ourself on delivering the best experience for are clients, how we do that is by delivering our projects on time, keeping them clean and most importantly on budget. we specialise in loft conversions and extensions which finish to a high standard and deliver quality workmanship
Get in touch
Lf design and build limited
No reviews yet
Extension Builder in St Helens
Extension and loft conversion specialist All building joinery and roofing job undertaken External wall insulation and render
Get in touch
Handyman and construction
No reviews yet
Extension Builder in St Helens
Building and home improvement
Get in touch
Hennerleys
Rating: 5 out of 5
Extension Builder in St Helens
Hennerley’s is an established family run company based in Chorley, Lancashire and through time and two generations of experience have grown to become a specialists Block Paving, Patios, Driveways, tarmacadam and groundwork’s company.
Get in touch
Latest review:
I think Anthony is best described as he and his staff take pride in their work. I had a new block-paved drive done. All way through he advised me on the best options and ideas I would not have thought of such as ensuring that any rainwater took the best path towards drains rather than merely ending up in the garden. I would thoroughly recommend Hennerleys for work.
Senator Property Renovations Limited
No reviews yet
Extension Builder in St Helens
We specialise in full house renovations from simple kitchen and bathroom remodels to back to bare brick and full renovations. We also cover loft conversions from Flat roof dormers, cottage dormers, velux conversions, re roofs and hip to gables with full building regulations approval. We can also project manage projects start to finish from dealing with architects, structural engineers, building control and the council all the way up until hanging the last door.
Get in touch
KBFS LTD
Rating: 5 out of 5
Extension Builder in St Helens
About KBFS is a leading construction company specializing in building, extensions, roofing, renovation, loft conversions, and kitchen fitting. With extensive experience in the contracting sector, KBFS is a trusted partner for delivering projects with high quality and professional excellence. We are committed to the highest standards of quality, safety, and integrity, from planning to final delivery. Our team of skilled professionals works collaboratively to provide innovative solutions that meet client needs and exceed expectations. ⸻ Our Services • Residential, commercial, and administrative construction • Extensions and building additions • Renovation and refurbishment • Loft conversions • Kitchen fitting and interior finishes • Post-delivery maintenance and support ⸻ Why Choose KBFS • Strict QA/QC system ensuring top-quality execution • On-time project delivery within budget • High-quality materials from trusted suppliers • Commitment to safety and professional standards • Clear warranties and excellent after-sales support
Get in touch
Latest review:
Kitchen Fitting- 6 Jun 2021
First class, professional, very pleased with the quality of work, thank you once again for your work!
SLG CONSTRUCTION LTD
No reviews yet
Extension Builder in St Helens
SLG Construction is a customer focused company who provide a professional construction service to all our customers no matter how big or small the project. From inception to completion we engage with are customers to ensure they have the best possible experience when creating something special.
Get in touch
JNW Projects LTD
No reviews yet
Extension Builder in St Helens
We are a construction company that pretty much covers all aspects of work and trades. Among our team we have people who are qualified in joinery, bricklaying, electricians, plasterers and plumbers. We also have vast experience in insulation and Eco. We work closely with other trades to ensure we can cover the whole package off any job. We are a close knit group off lads who have all worked together for a long period and knew eachother even longer. We got tired off working on our separate jobs and relying and waiting on other trades in order to complete task so decided to set up together to ensure we can complete the whole job. Company is headed up by Joe who has worked in construction for 15 years, he worked on the tools for 10years before taking a step into site management for a large company based in the north west, before setting up his business. We offer a friendly approach and enjoy working with our customers and offering a great service as our reviews will reflect.
Get in touch
K a building services
Rating: 4 out of 5
Extension Builder in St Helens
Hi I’m Karl owner of k a building services, I do all aspects of joinery , mainly stuff like stud walls , kitchens , skirts and arcs, roofs , false floors , I also take on most aspects of work from tiling to plumbing, I’ve done shop fitting all over the country, I also worked in London for Bernie Eccleston for 5 years on a few projects of work , I’ve very clean on my jobs , I like to interact with the customers about work and give guidance as if it was my own project
Get in touch
Latest review:
Carpentry- 15 Aug 2025
Could not recommend or rate Karl higher if I tried, after recently becoming a homeowner I had Karl come and give me prices for some jobs I wanted doing, initially the skirting boards, after talking to him and realising just how versatile he was he ended up doing most of the house. He’s completed a media wall, moved a stud wall, completed panelling in a dining area, fitted wardrobes and acoustic panels, laid flags in the fireplace and in an emergency he managed to fix a massive cracked pipe with a leak behind a wall and saved me a fortune. His prices are so fair, especially for the quality of the work, he treats the job as if he was working on his own home, nothing is rushed and his focus is on doing the job properly. Really nice fella and easy to talk to about the work that’s going on, already have him booked in to do more jobs, my house would be nowhere near where it’s at now without him

4.7

Top rated Extension Builders

Our Extension Builders in St Helens, are rated 4.7 out of 5 based on 12 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.