Extension Builders in Johnstone

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 5 (3 reviews)

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Some of our top rated extension builders in Johnstone

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ABC Construction (SCOTLAND) Ltd
Rating: 5 out of 5
Extension Builder in Johnstone
As an experienced Structural Engineer with the team of great builders (including joiners, roofers, plumbers, decorators etc.) I provide my clients with the Design and Build service.
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Latest review:
Extensions- 27 Aug 2015
Andrew and his team are all hard working, where the work is all to a high standard. All his workers are polite and work in all weather, often doing 12 hours days. The finish is better than I have experienced from other tradesmen. I was also kept abreast if on the rare occasion that someone could not turn up. It was clear that he showed a passion for 'doing it right', which included improving on the original plans. I am happy to recommend him and his team. A. HOLMS
New Land Renovations Ltd
No reviews yet
Extension Builder in Johnstone
We work on projects, from design to completion, commercial and residential, of any scale. Our team consists of four in-house joiners, as well well as a team of structural and groundworks crew. Our network and resources are varied, managing projects from a lower budget to the extravagant
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Aki
New on MyBuilder
Extension Builder in Johnstone
I am a qualified civil engineer with over 14 years of experience in construction, including building, renovation, and structural projects. I have strong skills in general building work, installations, and finishing. I am reliable, hardworking, and always focused on quality and customer satisfaction. Based in Glasgow, I am ready to take on both small and large jobs.
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J&M BUILDERS
Rating: 4.9 out of 5
Extension Builder in Johnstone
We always have a good rappore with customers and will give good advice on any job required. We take pride in our work and will do the job to a very high standard , neat and tidy.
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Latest review:
Extensions- 3 Sep 2021
Jim, James and their team done a fantastic job on our build. Due to Covid some parts were delayed however they kept us informed at every step. Very easy to deal with and trustworthy . All Covid safety restrictions were followed at all times . Recommend as quality workmanship.
SWB Shopfitting & Joinery
No reviews yet
Extension Builder in Johnstone
Here at SWB Shopfitting & Joinery ,we cover all kinds of drylining, suspended ceilings and joinery works commercial and private.
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Gallagher&son urban innovations and renovations
No reviews yet
Extension Builder in Johnstone
Good and trust worthy worker. Good overall building knowledge,interior and exterior. Have multiple trade skill set with 30 years experience and take pride in my work
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Crew Building and Maintenance Ltd
Rating: 5 out of 5
Extension Builder in Johnstone
I have over 40 years experience in the building trade working as a joiner and controlling large jobs and new builds , we also install steel work to engineers specification for large openings I have a vast knowledge of building extensions and doing loft conversions. Indeed we will do any job required in your home or office from small jobs to larger projects. Find us on Facebook and have a look at a few jobs we have completed Please note we cover all aspect of the building trade We are also experienced in Groundworks patios driveways etc again can all be seen on our Facebook and Google pages
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Latest review:
Carpentry- 10 May 2025
Excellent job done by a super team. Highly recommend
Oakburn joinery
No reviews yet
Extension Builder in Johnstone
We are a joinery & building company who have been working in the construction industry for over 20yrs .we work to the highest of standards and bring projects to an end with attention to detail with pride in our workmanship .From full Renovations to your smaller projects all work is welcome .We carry every trade also which helps keep the customers from having to deal with all the different trades which will also help as the project goes through the stages .
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First fix construction scotland ltd
No reviews yet
Extension Builder in Johnstone
We are a small family company with a dedication to our customers to complete the required tasks. We are fully insured and 20 years experience in our trade. We have diggers, dumpers, grab lorries and drain jetting unblocking services.
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Engineering EG
No reviews yet
Extension Builder in Johnstone
We are a reliable joinery and cabinet making service dedicated to delivering high-quality workmanship and attention to detail. We specialise in custom cabinets, fitted furniture, repairs, and general carpentry work for homes and businesses. Our focus is on precision, durability, and customer satisfaction. Whether it’s installing cabinets, building bespoke joinery, or completing finishing work, we take pride in providing professional results and a smooth, stress-free experience for every customer.
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MPM
No reviews yet
Extension Builder in Johnstone
As Professional Chartered Project Manager, I carry out an end to end service ensuring the client’s brief are achieved. I am experienced in various sectors across construction, utilities and infrastructure and can adapt where required for my clients needs. I work alongside my clients taking them on the journey ensuring ensuring we deliver to the highest quality of service.
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N white construction
Rating: 5 out of 5
Extension Builder in Johnstone
Long established company specialising in groundwork and joinery. Reliable and honest. No job too big or small
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Latest review:
Joinery & Cabinet Making- 30 May 2025
I had an excellent experience with Mr. White. He arrived on time, communicated clearly throughout the project, and delivered work of a very high standard. He matched the colour of the cabinets perfectly and installed them with great attention to detail. Professional, reliable, and skilled – I would highly recommend his services to anyone seeking high-quality joinery work.
Perfect Developments Ltd
No reviews yet
Extension Builder in Johnstone
Perfect Developments by name and Perfect Developments by nature. Our team are experienced in new build home project management, home improvement works such as extensions, conversions, kitchen & bathroom remodelling, property refurbishment, office fit-out and a whole load more! If you are building your own home, a homeowner, a property developer, a landlord or similar, we can help take your dreams to reality from concept to completion.
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CLB Construction & Roofing solutions Ltd
New on MyBuilder
Extension Builder in Johnstone
We are an Alltrades company carry out small repairs to extension, kitchens, bathrooms and new roofs. We also carry out insurance repairs for some big Insurance companies, and general maintenance for letting agents.
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JD Stonemasonry Ltd
No reviews yet
Extension Builder in Johnstone
With over 25 years experience in commercial and private Stonemasonry all over the UK. Working on high profile projects such as The Scottish Parliament, Harvey Nichols to restoration projects. I have a vast knowledge of in all aspects of Stonemasonry. Having worked for such prestige projects, leaving a quality finish has been instilled.
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PR Plant (Scotland) Ltd.
No reviews yet
Extension Builder in Johnstone
We have vast amounts of experience within our business from landscaping to full house builds to entire housing schemes or commercial and retail new build properties, as the saying goes no job is too big or too small for us We hope to build long lasting relationships with our potential clients treating their project as if it were one of our own builds. This way we can ensure quality is at an absolute max by ensuring all our operatives are completely invested and immersed into your project!
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Top rated Extension Builders

Our Extension Builders in Johnstone, are rated 5 out of 5 based on 3 reviews from customers like you.

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

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

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

What are the hourly rates of extension builders in Johnstone?

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

Find extension builders in Johnstone with MyBuilder

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

Step 2: Compare different extension builders in Johnstone

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

Step 3: Hire Johnstone extension builders with confidence

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

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

What to ask a Johnstone extension builder before hiring?

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

An extension builder in Johnstone 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 Johnstone 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 Johnstone?

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 Johnstone 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 Johnstone 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 Johnstone

Can an extension builder in Johnstone help with planning permission?

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

Many Johnstone 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 Johnstone help with materials and finishes?

Yes, most extension builders in Johnstone 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.