Extension builders in Johnstone

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

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Some of our top rated extension builders in Johnstone

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Paul Lindsay
Rating: 3.9 out of 5
Extension Builder in Johnstone
All brickwork/stonework and groundwork undertaken,Gold star awards for Brickwork from the NHBC on many jobs throughout the country,We also carry out all joinery works including extensions/loft conversions and new-builds,
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Latest review:
Demolition- 20 Mar 2026
From our initial contact, Paul Lindsay was hugely helpful and very proactive! Understood the job and was able to clearly articulate how the company could assist. The joiners were superb. Not only obviously skilled at their trade, but very personable and polite. I have no hesitation in highly recommending Paul Lindsay and team. Will have them back again for any future work!! Thank you.
S2S CONTRACTORS LTD
Rating: 4.7 out of 5
Extension Builder in Johnstone
We cover all aspects of building and ground work from below the ground to the finished project. • Foundations • Service tracks (Water. Gas. Electricity) • Concreting (Reinforced ) ( Floor slabs ) • Concrete repairs • Structural repairs • Retaining walls • Brick / Block laying (Walls. Internal,external) • Patios (Sandstone. Porcelain) • Drainage ( Deep ) • Landscapes • Timber kits (New builds. Extensions) S2s
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Latest review:
Groundwork & Foundations- 14 Jul 2024
Did not use this company as ,after further investigation by another company, the blockage was found to be in the downpipe. Blockage now cleared. Initial fault report carried out by another company was found to be wrong. Sorry to all who replied to this !
PAT BUILDING SERVICES
Rating: 5 out of 5
Extension Builder in Johnstone
Hi. We are team of tradesman. Having completed many successful projects, we have the experience and the expertise needed and have over 14 years experience and many satisfied customers. We offer a complete building service from plan and design to building including kitchen and bathroom installation, tiling, plastering, plumbing, central heating,electric, joinery and decoration. Our guarantees are competitive prices and high quality finish. Kind regards PAT BUILDING SERVICES
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Latest review:
Extensions- 22 Mar 2022
Most reliable, professional and honest builder I ever met. Patryk did my two storey extension to the highest standard, to agreed price and time. Great communication and advice from Patryk at all the time. Even building inspector from Renfrewshire council was really impressed at site visit! Builder no 1 on mybuilder.com!!! Thank you Patryk for all the great work you did. We are over the moon.
Pro visions bathrooms
No reviews yet
Extension Builder in Johnstone
Welcome to Pro Visions, your trusted destination for bathroom planning, design and installation in Ardrossan. With over 14 years of experience, we specialise in delivering quality renovations and upgrades for bathrooms across Ardrossan, we're dedicated to bringing your vision to life with the highest standards of craftsmanship. Our comprehensive services include wet wall applications, bathroom renovations, plumbing, tiling, and more. With Pro Visions, you can expect personalised solutions and attention to detail in every project.
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C&J Joiners
Rating: 5 out of 5
Extension Builder in Johnstone
C&J Joiners are a family run joinery business based in Airdrie with over 20 years of experience. We cover all areas of central Scotland. We’re fully insured and with all work guaranteed, we have experience in all aspects of domestic and commercial joinery.
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Latest review:
Kitchen Fitting- 4 Apr 2025
Drew and his team did a fantastic job with our kitchen and bathroom, work completed on time and on budget. Would recommend them to all
Darach Ltd
No reviews yet
Extension Builder in Johnstone
We are a small building company specialising in low energy building within new build, refurbishments & extensions. Our aim is to deliver quality work for our customers at a fair price, we won't be the cheapest though. Personally I have over 30 years management experience covering a wide range of projects. Holder of Site Management Safety Training Scheme & CSCS card holder. The business has £2,000,000 of public liability cover as well as professional indemnity cover & employers liability cover
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Creative Carpentry
No reviews yet
Extension Builder in Johnstone
Creative Carpentry is a mainly joinery based company with over 17 years of experience in crafting high-quality one off build, extensions, loft conversions, kitchens and bathrooms. As well as all building requirements including supply of all trades. We are eager to bring our expertise in carpentry, design, and project management fulfill all client needs
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Jamie Donnelly
No reviews yet
Extension Builder in Johnstone
Fully qualified bricklayer with years of experience in all aspects of brickwork. Easy going and understanding. Will always put the customer first and offer advice when necessary. No job is too small will always listen and ensure you get the best end result
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AJL Builders
Rating: 5 out of 5
Extension Builder in Johnstone
AJl Builders and project management is a small family business with 30 years of experience. We will keep you right through any project you decide to do.. We will give you ideas and save you money where possible. Our expertise is the building of new homes, extensions ,conversions , bathrooms to include wall board or wall tiling and fitted kitchens. We care about what we do and leave an excellent finish . All our trades take pride in what they do.
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Latest review:
Extensions- 22 Apr 2017
Good job, happy with the end result.
Artisan Building Services
No reviews yet
Extension Builder in Johnstone
Over 20 Years trade experience: All aspects Bricklaying undertaking with extensive knowledge and experience in house building, extensions and renovation work. “Free Estimates and Advice “
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Ks home renovation
No reviews yet
Extension Builder in Johnstone
We are quick growing company specialise on home renovations and house extensions. Always doing jobs on hight standard. We always happy to help customer
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SJE Joinery
Rating: 5 out of 5
Extension Builder in Johnstone
Hi Scott here, my company is SJE joinery we pride ourself in our high standard of workmanship and attention to detail, we provide a full service from start to finish bringing in whatever trade is required to fulfil the job, we supply all trades we cover it all no job too big or too small, fast, reliable, always on time.
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Latest review:
Carpentry- 7 Aug 2023
Scott was Very professional and work was excellent. No issues and will use again.
AJH Builders Limited
No reviews yet
Extension Builder in Johnstone
We supply all trades for the complete extension or house build , also all groundwork’s and landscaping , all tradesmen have years of experience
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Qube design and construction
No reviews yet
Extension Builder in Johnstone
An extensive knowledge of all things Architectual Design and Construction, an initial conversation will confirm this!
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Clovelly Developments
Rating: 5 out of 5
Extension Builder in Johnstone
You visualise it, we design it, we build it. Architectural and Construction management company specialising in all aspects of work. Planning Permissions. Building Warrants. Contract Management. Construction. We supply all trades from the design right through to the last tile.
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Latest review:
Architecture- 16 Sep 2026
Comeron completed my floor plan very quickly and professionally. I can’t fault his work in any way and would definitely recommend him!
RENU GLAZING
No reviews yet
Extension Builder in Johnstone
RENU provide property improvements for all home owners needs. Having over 20 years experience our tradesmen have a keen eye for quality craftsmanship. We pride ourselves on having our customers satisfied. We handle everything from start to finish turning your dream projects into reality.
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Top rated Extension Builders

Our Extension Builders in Johnstone, are rated 5 out of 5 based on 5 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.