Extension Builders in Runcorn

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.2 (10 reviews)

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Some of our top rated extension builders in Runcorn

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Oak & Stone Builders Ltd
Rating: 5 out of 5
Extension Builder in Runcorn
Hello, at Oak & Stone Builders Ltd we are a family run business that specialise in all aspects of building and maintenance work, internally and externally. We have very competitive prices. All our work is carried out to the highest of standards, professional and punctual. As we are a family run business we are extremely understanding and caring towards our customers.
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Latest review:
Bathroom Fitting- 18 Feb 2025
I recently had a under the stairs toilet fitted by Jack and his team - i couldn’t be happier! (Especially as a first time homeowner that’s had negative experiences with other builders). Great communication and professional approach throughout the project. He kept me updated on progress, listened to my ideas and offered helpful suggestions, ensuring I was always in the loop. They are a trustworthy, reliable team and their work is carried out to the highest standard. Already booked them in for more work and I highly recommend!
JSR building & joinery
No reviews yet
Extension Builder in Runcorn
We are JSR building & joinery We have a vastly experienced and qualified team covering all aspect of the building industry
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MTK RENOVATIONS LIMITED
Rating: 4.1 out of 5
Extension Builder in Runcorn
MTK Renovations Limited is a trusted building company based in Liverpool, specialising in home renovations, extensions, loft conversions, kitchens, bathrooms, roofing, structural alterations, plastering, brickwork, joinery, plumbing, and full property refurbishments. We are committed to delivering high-quality workmanship, excellent customer service, and projects completed to the highest standards. ✅ Proud Member of the Federation of Master Builders (FMB) ✅ Fully Insured with £1.5 million Public Liability Insurance ✅ £10 million Employers' Liability Insurance ✅ Free, No-Obligation Quotations ✅ Professional, Reliable & Fully Committed to Customer Satisfaction Trust Badges / Certifications ✔ Federation of Master Builders Member ✔ Fully Insured ✔ Public Liability Insurance (£1.5M) ✔ Employers' Liability Insurance (£10M) ✔ Free Quotes ✔ Liverpool & Surrounding Areas ✔ Domestic & Commercial Projects
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Latest review:
Extensions- 3 Dec 2025
Work currently in progress , the builder has been committed and we are looking forward to a good working relationship
Cheshire contracts ( NW)
No reviews yet
Extension Builder in Runcorn
Industrial, Commercial & Domestic Building and Roofing Contractors
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Align Brickwork Ltd
Rating: 5 out of 5
Extension Builder in Runcorn
We are a highly experienced, family-run building company with a strong reputation for delivering high-quality workmanship across a wide range of projects. With a background that spans everything from new-build homes and residential extensions to full property renovations, paving, garden walls, and all aspects of building work, we bring a wealth of knowledge and skill to every job. Our team takes great pride in our work. We’re known for our attention to detail, strong work ethic, and commitment to delivering results that meet the highest standards—on time and within budget. Whether it’s a large-scale construction project or smaller bespoke work, we approach every task with professionalism, care, and integrity. If you’re looking for reliable, skilled builders who are passionate about quality craftsmanship, we’d be happy to discuss how we can help bring your project to life.
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Latest review:
Bricklaying- 18 Jun 2026
Shaun (the owner) came promptly for a site visit and explained very clearly the solution and sent a detailed quote 24 hours later. The quote was the best from a local professional builder who provided a formal contract and company documents and inspire total confidence.The job was about taking down the garden wall pushed over by several big trees cut but with stumps left in place and with a very big tree at the distant end of the wall. We mutually agreed the starting date which we kept flexible to account for weather changes. Shaun and his team did an excellent job on taking down the old wall, dealing with the very large tree stumps, dealing with a challenging issues around a big tree and building the new wall with pillars and caps. They removed all the rubbish and washed the pavement a very tidy job. .As promised Shaun came back two weeks after and mounted back the wood panels. He is a very good manager for the team and they were all very respectful. Very pleased, would hire again.
GA BRICKWORK.
No reviews yet
Extension Builder in Runcorn
Fully Disciplined ,Timeserved,City&Guilds craft certification, in Stonework,Brick work,And Block work.. 43 years experience oneTRADE ONE SKILL DEDICATED TO PROVIVE FIRST CLASS WORK AT EVERY LEVEL..
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SBS Cheshire Ltd
Rating: 5 out of 5
Extension Builder in Runcorn
We undertake all commercial and domestic building work, including shop re-fits, industrial unit renovation, new build houses, extensions and loft conversions. SBS Cheshire Ltd are a professionally run company set up in 2003, starting off as a small family business, which has increased in size due to winning various national contracts. We offer free quotes, and all work is carried out effeciently and proffesionally, and all work is fully guarenteed.
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Latest review:
Carpentry- 19 Jan 2023
Really good Good interaction prior to commencing work. Work began exactly on time and undertaken effectively and neatly. Excellent standard of workmanship with a minimum of fuss. Will use again
Cheshire Homes
Rating: 5 out of 5
Extension Builder in Runcorn
I have been working in construction for over 24 years and I have experience that ranges from a complete new build to minor repairs. As a business we will undertake anything from Extensions, plastering, kitchens, bathrooms, roofing, and all other general building work. We can manage larger projects as a service if needed.
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Latest review:
Extensions- 25 Jun 2021
Lee completed our garage build and we were very happy with it. He handled the whole project including liasing with building control. Overall: -High build standard -Good communication -Good price -Quick and reliable Would recommend Cheshire Homes for any projects!
Nac development Ltd
No reviews yet
Extension Builder in Runcorn
Nac development Ltd Local construction firm specialising in joinery, kitchens, bathrooms, flooring, extensions and loft conversion We cover small repair jobs to fill renovations making sure your dream becomes reality
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Jack willcott
No reviews yet
Extension Builder in Runcorn
Fully qualified bricklayer with 12 years experience building new builds, extensions, renovations and and steel fitting
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Ste Leatherbarrow building and roofing
Rating: 5 out of 5
Extension Builder in Runcorn
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
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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.
PRO-FIT-UPVC LTD
Rating: 4.9 out of 5
Extension Builder in Runcorn
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.
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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.
Celeritas
No reviews yet
Extension Builder in Runcorn
We are a full-service property development and landscaping company delivering high-quality, end-to-end solutions for residential and commercial clients. From site preparation and construction through to bespoke landscaping and outdoor design, we transform spaces into functional, visually striking environments. Our work combines smart planning, skilled craftsmanship, and attention to detail to create developments that are built to last and landscapes that elevate the value and character of every property.
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OJ Joinery & Roofing LTD
New on MyBuilder
Extension Builder in Runcorn
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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Upstage joinery NW Ltd
No reviews yet
Extension Builder in Runcorn
We are a bespoke joinery company that can handle all building tasks, we are reliable, punctual and well mannered trades people who care about there work.
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SSUK Energy
Rating: 5 out of 5
Extension Builder in Runcorn
My name is Ali, and I am a skilled and experienced construction professional with over 16 years of hands-on experience in the building and finishing industry. I specialise in a wide range of construction work including bricklaying, concrete work, waterproofing, painting, tiling, flooring installation, as well as basic plumbing and electrical tasks which all performed to meet high technical standards and safety regulations. I am committed to delivering high-quality results, meeting deadlines and working efficiently both independently and as part of a team. I am confident in reading and interpreting technical drawings and using modern tools and equipment with precision. I believe professionalism lies in attention to detail and I always strive to exceed client expectations through reliable, top-quality workmanship.
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Latest review:
Tiling- 8 Aug 2025
Ali was very professional with all latest tools to do the perfect job. Seems a family business but all were nice Happy with how he did it perfectly👍.

4.2

Top rated Extension Builders

Our Extension Builders in Runcorn, are rated 4.2 out of 5 based on 10 reviews from customers like you.

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What types of services are offered by local extension builders in Runcorn?

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

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

What are the hourly rates of extension builders in Runcorn?

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

Find extension builders in Runcorn with MyBuilder

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

Step 2: Compare different extension builders in Runcorn

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

Step 3: Hire Runcorn extension builders with confidence

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

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

What to ask a Runcorn extension builder before hiring?

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

An extension builder in Runcorn 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 Runcorn 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 Runcorn?

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 Runcorn 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 Runcorn 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 Runcorn

Can an extension builder in Runcorn help with planning permission?

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

Many Runcorn 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 Runcorn help with materials and finishes?

Yes, most extension builders in Runcorn 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.