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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Custom Joinery Liverpool Ltd
No reviews yet
Extension Builder in Runcorn
Highly experienced Joiner with 20years working in the trade. We provide the highest quality on work without a ridiculous price tag. All work provided is guaranteed and will not be beaten.
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d.l.builders
Rating: 4.9 out of 5
Extension Builder in Runcorn
with over 25 years experiance in the construction industry. i have run my own buissness for the last 12 years. i have been involved in new build and renovation. from £1000. to £10000.00.projects.
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Latest review:
Restoration & Refurbishment- 13 Aug 2019
Dave and Collin were very reliable and professional. They are easy to communicate with and have shown to have a lot of experience and know what needs to be done to sort out any problems that come their way. They have kept to the schedule and finished the job on time. I am a happy customer and can definitely recommend them.
Jjelite joinery and building
No reviews yet
Extension Builder in Runcorn
All aspects of joinery.
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Absolute Construction Ltd
No reviews yet
Extension Builder in Runcorn
.
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Keenbuildandmaintenance
Rating: 5 out of 5
Extension Builder in Runcorn
I am new to my builder so please don’t let this put you off with no reviews. I am a fully qualified bricklayer nvql3 with 23 years in the trade and also knowledge in other trades with contacts who can help along in your project. We not only do a nice tidy job but I personally think it’s also how you leave the job clean and tidy and each job treat it like it is our own home .
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Latest review:
Conversions - General- 24 Sep 2025
David completed the job with professionalism and to a high standard and I highly recommend him. I would not hesitate to hire David again.
mjm bespoke build
No reviews yet
Extension Builder in Runcorn
over 15 years experience in the building trade as well as 5 years project management, we undertake extensions of all sizes as well as alterations, refurbishments , and general building maintenance
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Dariusz Building service
No reviews yet
Extension Builder in Runcorn
Hi. I'm Dariusz I used to live in Scotland where I worked for about 8 years for a building company turning old buildings into flats and offices. After my contract run out I worked as a self employed trader working in refurbishment of properties and building extensions. When I moved to Ellesmere Port I worked for company Called Global Dental doing full refurb and fit out of dental practices. Recently I quit my job and am here now.
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Jason Lambert Extensions
No reviews yet
Extension Builder in Runcorn
Are main work is extensions I will project manage the work start to finish I have an architect that can draw up the plans and submit if required Past work can be viewed Been building since 1990 We take pride in all of our work
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Dan waterworth
Rating: 5 out of 5
Extension Builder in Runcorn
"Waterworths Construction LTD". We cover all aspects of domestic construction, onboard our team we have. NVQ LEVEL 3 Electrician 17 years experience. NVQ LEVEL 3 Joinery and carpentry 15 years experience. NVQ LEVEL 3 Bricklayer 15 years experience. NVQ LEVEL 3 plastering 17 years experience. We specialise in extensions, refurbishments, bathrooms and kitchens, plus many more. As a single company we can offer the complete package ensuring you receive a stress free and successful job
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Latest review:
Dan and his team came highly recommended from a friend so we used them to build our two new offices and a customer reception area inside our workshop. We just gave them a rough brief of what we needed and left them to it. They’ve done an absolutely fantastic job. All the work was completed around when we had people visiting us etc. The offices and reception were finished sooner than first expected and we even got a bespoke window of our logo looking out into the workshop. Would definitely recommend and will use again in future. Cheers guys!
Michael Byron
No reviews yet
Extension Builder in Runcorn
Hi I have been a bricklayer for 22 years who undertakes all aspects of brickwork. I specialise in extensions, garden walls and repointing. Most of my work is in Merseyside but can travel further. We are a team of 2 which is 1 bricklayer 1 labourer reasonably priced and very clean and take a lot of pride in our finished product which isn’t just the wall it’s the whole clean up of the finished job also
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Hydrostop Limited
Rating: 5 out of 5
Extension Builder in Runcorn
HydroStop Limited are flat roofing and damp remediation specialists based in Wirral, covering the North West and beyond. We are a dedicated specialist trade — not a general builder — which means every job we take on is within our core expertise. Flat Roofing — Firestone EPDM Rubber Systems We have been installing Firestone RubberGard EPDM rubber membrane roofing since 1998 — over 25 years of hands-on experience with this system. EPDM is the premium choice for UK flat roofs: a single-ply rubber membrane carrying a 20+ year manufacturer-backed warranty that far outperforms felt and GRP on longevity and reliability. We install on domestic extensions, garage roofs, and outbuildings, to the correct specification every time. Damp Proofing & Remediation We diagnose and treat all forms of damp in domestic properties — rising damp, penetrating damp, and condensation-related issues. Every survey is carried out by one of our own employed surveyors — all of whom hold Level 2 Certification with the Federation of Damp (FOD). We identify the source, not just the symptom. Treatment includes specialist tanking, replastering with salt-resistant renovating plaster, and chemical DPC injection where required. We leave walls ready to redecorate. We are Verified by MyBuilder, registered at Companies House, and offer a warranty on all works. Fully insured, professional, and straight-talking.
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Latest review:
Roofing (Flat)- 25 Aug 2026
Michael and Peter did a great job replacing our flat roof. The options were explained really clearly from the outset, including the pros and cons of a warm vs. cold roof. They gave us their recommendation on the best option but left the final decision entirely to us. They went above and beyond throughout and made sure everything was completed to a really high standard. The work was fairly priced, and they also managed to fit us in at short notice, which we really appreciated. We’re really pleased with the finished roof and would happily recommend them.
M Group NW Ltd
No reviews yet
Extension Builder in Runcorn
M Group NW Ltd are a dynamic and innovative force in the realm of Groundworks and Civil Engineering. Committed to delivering unparalleled solutions, we embark on a journey to redefine industry standards and set new benchmarks for quality, efficiency, and reliability.
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Site engineering solutions
No reviews yet
Extension Builder in Runcorn
Construction management graduate, senior project engineer / site agent by trade with 10 years experience in housing, commercial build, civils and groundwork’s.
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Maintenance point
No reviews yet
Extension Builder in Runcorn
Maintenance Point strive to provide the highest quality home improvement services and customer care in Warrington and throughout the Northwest. Because our services encompass a comprehensive range of home improvement solutions from construction, joinery, plastering, plumbing and electrical, you only ever need to deal with one company from start to finish taking the hassle away from dealing with multiple tradesman.
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Buildingthefuture65
No reviews yet
Extension Builder in Runcorn
I have been in the building now for coming upto 8 years, we cover anything from extention builds, kitchen and bathroom installation, flat roof pitched roofs, fibreglass roof. Pile-ons also concrete rafts. Tiling All external and internal building/construction work carried out.
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Jtr Design and Build
No reviews yet
Extension Builder in Runcorn
I’m a Multi skilled builder with over 30 years of experience in a variety of trades. Professional, polite and clean, treat your property like it’s my own . Very knowledgeable.
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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.

Quality screening

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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.