Extension Builders in Barnsley

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4 (8 reviews)

Easily find verified Barnsley Extension Builders. Just post your job to get quotes from MyBuilder's Extension Builders in Barnsley.

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 Barnsley

517 Results

Sort by:

CLS Property Services
No reviews yet
Extension Builder in Barnsley
We specialize in property refurbishments, extensions, kitchens, bathrooms, loft conversions, basement conversions, garage conversions, and offer a wide range of trades under one roof. What sets us apart is our commitment to quality, attention to detail, and a team of skilled professionals who ensure your project is completed to the highest standards. With us, you get a one-stop solution for all your home improvement needs.
Get in touch
JS Construction
Rating: 5 out of 5
Extension Builder in Barnsley
Experienced in all aspects of building, looking for brick work/block work/ stone work, exstensions ,garden walls,concrete, patios, decorative brick work etc. Have a look at my face book page (J.S construction) for reviews and more info on my trusted business.
Get in touch
Latest review:
Landscaping- 9 Nov 2023
Job was cancelled due to unexpected circumstances. The guys where great, easy to talk to, knowledgeable and executed outstanding customer service.
One stop professional building contractors ltd
Rating: 5 out of 5
Extension Builder in Barnsley
One stop pro build are a family run business based in Sheffield South Yorkshire, we offer a full turn key service from start to finish of construction.
Get in touch
Latest review:
Extremely professional friendly service.
Key Property Installation
Rating: 4.2 out of 5
Extension Builder in Barnsley
We are a family run business with over 20 years experience and specialize in loft conversions garage conversion kitchens bathrooms and full house renovations we are a team of trades that pride ourselves on our quality workmanship we don’t rely on any other trades and are with You from start to finish we never have problems just solutions
Get in touch
Latest review:
Superb communication from start to finish after site visit. Fair pricing. Wonderful team and great fun to have around during the period of work. Highly skilled and would recommend you use these guys for any work you need doing. We will be using them again. Thanks to Warren and the chaps we have had the pleasure of knowing during your time with us. Huge thanks again. Jackie and Nick
C.Goldie.Building
No reviews yet
Extension Builder in Barnsley
Here at C.Goldie.Building we work with your customers to deliver high quality projects that suit their needs.
Get in touch
CB building and landscaping
Rating: 5 out of 5
Extension Builder in Barnsley
CB Building and Landscaping myself Cass and Luke have been partnered in business for over 4 years but have Over 17years experience. We take on any projects large or small in all aspects of building or landscaping. We are committed and take great pride in our work. We always try our best to be competitive on price. All our staff are DBS checked for your piece of mind.
Get in touch
Latest review:
Landscaping- 25 Apr 2024
Professional and competitive quote. Very happy with the patio.
K Smith joinery
No reviews yet
Extension Builder in Barnsley
I undertake all building and joinery work. Qualified apprentice trained level 3 joiner. Been self employed 15 years.
Get in touch
CM Builders and Bricklayers
Rating: 5 out of 5
Extension Builder in Barnsley
General builder and bricklayers with years of experience in all aspects in the building industry. Small team with huge experience.
Get in touch
Latest review:
Conversions - General- 21 Dec 2025
Callum completed a door way cut out for me. He completed the work in a clean, efficient , and professional way. He reviewed the work before starting and then carried out the work in a timely , cost effective way. I have no hesitation recommending Callum to anyone and I will definitely be using him again for all my future work. Thank You Callum Justin Justins Joinery
DW plumbing and heating
Rating: 5 out of 5
Extension Builder in Barnsley
We are a family based Construction business experienced in all types of work specialising in Extensions,Plumbing and heating and all aspects of Home Improvements and are very competative with our estimates. All the tradesmen associated with us are family members or close colleagues and friends who we trust and have good reputations for their work and pride ourselves of the caring approach we offer to all our clients.
Get in touch
Latest review:
Central Heating- 17 Oct 2019
Lovely guy, did a great job and was very patient and helpful when it turned out I didn't have enough tiles after telling him I did, reliable and fair price,got the job done quickly Highly recommended by me and will use again. Thank you
M Jessop Construction
Rating: 5 out of 5
Extension Builder in Barnsley
Hi. I’ve worked in the building trade for 28 years building houses, extensions, garden walls, garages, taking out walls, all different aspects of building work. I am fully insured with mostly repeat customers.
Get in touch
Latest review:
Bricklaying- 7 Jun 2023
I found Mathew to be very professional and helpful, the work he did for me on my boundary wall is second to none. I would definitely recommend Mathew to anyone,
John Bedford Builders
Rating: 5 out of 5
Extension Builder in Barnsley
My name is John Bedford, I have been working in construction for 25 years. I would be happy to discuss your requirements in further detail and provide a competitive quotation for you project.
Get in touch
Latest review:
Extensions- 29 Sep 2015
My wife and I embarked on a 38sqm extension in March 2015. It included 3 steel beams, with 1 across the entire back of the property. The existing kitchen and dining room was extended, including a new room and bathroom. We entered the project with a degree of uncertainty. I was keen to choose a professional, trustworthy builder thus avoiding arguments and miscommunications. We met John twice. We were impressed by his easy manner, past experience, professional knowledge, reasonable price and equally, his excellent reviews. The project started in March 2015. John was present throughout. He volunteered updates, left the site clean and made the process as comfortable as possible. No easy feat, as we were still residing at the address with children. The project finished within the time scale and on a happy note. Other than the obvious bias of my wife and I, who are extremely pleased with the finished project, we equally receive constant compliments from others more neutrally regarded. Those that visit are complementary about the scale of the extension and its impressive finish. The attention to detail and high quality finish that I hoped for, is present throughout. If your home is your greatest asset, leaving it in the hands of someone else demands a great deal of trust and a jump into the unknown. Based on my personal experience, I am pleased that our instinct was vindicated. Entrusting our project to John Bedford, proved to be the best decision of all.
Northern Home Improvement LTD
Rating: 3 out of 5
Extension Builder in Barnsley
Here at NHI our aim to to remove the stress that is associated with building work. We have developed a comprehensive team of highly skilled and professional trades, creating a one stop to your dream home. We offer a huge range of trades, products and services to attend any budget or expectation. We want to give our customers exactly what they want with our year of knowledge we do our very best to produce a service that everyone can appreciate.
Get in touch
Latest review:
Landscaping- 27 Apr 2026
He didn’t turn up
Royle Building Contractors
Rating: 5 out of 5
Extension Builder in Barnsley
I am a Builder that takes pride in my work and makes sure a job is finished to a high standard and that customers are satisfied. Experience in extensions, Roofing, retaining and garden walls and groundworks.
Get in touch
Latest review:
Extensions- 17 Dec 2021
Extension is ongoing, so far so good, it’s looking fabulous. Michael is amazing, so hard working and always keeps us up to date with how the jobs progressing.
Scott smith
No reviews yet
Extension Builder in Barnsley
SS brickwork
Get in touch
NBKS BUILDERS
Rating: 5 out of 5
Extension Builder in Barnsley
I UNDERTAKE ALL ASPECTS OF WORK FROM COMPLETE NEW BUILDS,EXTENSIONS,DRIVES,WALLS,INTERNALS NO JOB IS TO BIG OR TOO SMALL, I HAVE MY OWN 1.5 AND 5 TON DIGGERS PLUS DUMPER. 33 YEARS EXPERANCE.MY COMPANY NBKS BUILDERS GOT A HIGHLY RECOMMENDED AWARD IN 2012 BY THE LABC.WE CAN PRICE FOR THE WHOLE JOB OR JUST PART OF A JOB WHAT EVER CUSTOMER REQUIRES.I HAVE JUST MANAGED JOBS FROM A SINGEL EXTENSION TOO A 10 HOUSE NEW BUILDS
Get in touch
Latest review:
Extensions- 26 Sep 2025
MASSIVE thank you NBKS BUILDERS for the outstanding job completed for my Day Nursery. NBKS guttered our building and completed a full renovation and single storey extension in 3 & half months, and garden. Neil Director was a diamond from day 1 till end in his approach to our job, he always offered new ideas along the way, no request was to big or small, very adaptable. His Team was friendly, consistent, came every day including weekends to meet our September reopeing deadline. Neil is easy to speak with and project managers the full job. Neil has Exstended contractors who work alongside his team like electricians, plumbers, carpenters and together they worked on point to meet our deadlines. Even though NBKS have completed, they stay in touch to ensure alls working well, which this feels very supportive. NBKS came to our Nursery relaunch and open day, the High Sheriff Of Nottm was impressed with the build and the time frame completed in. We definitely recommend NBKS to all projects
Sancho Sanchez
Rating: 5 out of 5
Extension Builder in Barnsley
SS Brickbuild Developments Experts in Extensions, Renovations, Refurbishments & Landscaping SS Brickbuild Developments is a leading construction company specialising in high-quality home extensions, renovations, refurbishments, and landscaping. With years of industry experience, our skilled team delivers exceptional craftsmanship and reliable service, transforming both residential and commercial properties to enhance their functionality, value, and appearance. ⸻ Our Expertise 1. Home & Commercial Extensions We create seamless extensions that integrate perfectly with your existing property. Whether you’re expanding your kitchen, adding a bedroom, or designing an open-plan living space, we ensure a smooth and efficient build from start to finish. Our extension services include: * Single-storey and multi-storey extensions * Loft conversions * Conservatories and orangeries * Garage conversions ⸻ 2. Renovations From modern upgrades to full structural transformations, we provide comprehensive renovation services tailored to your needs. Our renovation services include: * Structural alterations and layout changes * Kitchen and bathroom upgrades * Roofing and flooring solutions * Plumbing, heating, and electrical work ⸻ 3. Refurbishments We breathe new life into properties, improving both style and functionality while preserving original character where required. Our refurbishment services include: * Interior and exterior refurbishments * Period property restorations * Painting, plastering, and decorating * Bespoke joinery and carpentry ⸻ 4. Landscaping We design and build outdoor spaces that are both practical and visually impressive, tailored to suit your lifestyle and property. Our landscaping services include: * Patios and paving * Driveways and pathways * Garden design and turfing * Fencing and boundary work * Retaining walls and brickwork * Decking and outdoor features ⸻ Why Choose Us? ✅ Expert Craftsmanship – Highly skilled builders and tradespeople with attention to detail ✅ Tailored Solutions – Designed around your vision, needs, and budget ✅ Quality Materials – Only premium materials used for lasting results ✅ Transparent Pricing – Clear, honest quotes with no hidden costs ✅ Project Management – Full service from planning through to completion ✅ Customer Satisfaction – Delivered on time and to the highest standards ⸻ Get in Touch If you’re considering an extension, renovation, refurbishment, or landscaping project, SS Brickbuild Developments is here to help. Contact us today for a free consultation and let’s bring your project to life.
Get in touch
Latest review:
Bricklaying- 29 Jul 2024
Sancho did an excellent job and very professional from start to finish 👍

Top rated Extension Builders

Our Extension Builders in Barnsley, are rated 4 out of 5 based on 8 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 Barnsley?

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

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

What are the hourly rates of extension builders in Barnsley?

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

Find extension builders in Barnsley with MyBuilder

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

Step 2: Compare different extension builders in Barnsley

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

Step 3: Hire Barnsley extension builders with confidence

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

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

What to ask a Barnsley extension builder before hiring?

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

An extension builder in Barnsley 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 Barnsley 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 Barnsley?

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 Barnsley 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 Barnsley 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 Barnsley

Can an extension builder in Barnsley help with planning permission?

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

Many Barnsley 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 Barnsley help with materials and finishes?

Yes, most extension builders in Barnsley 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.