Extension builders in Castleford, Yorkshire and the Humber

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.5 (8 reviews)

Easily find verified Castleford, Yorkshire and the Humber Extension Builders. Just post your job to get quotes from MyBuilder's Extension Builders in Castleford, Yorkshire and the Humber.

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 Castleford, Yorkshire and the Humber

483 Results

Sort by:

CSN building contractors
Rating: 5 out of 5
Extension Builder in Castleford, Yorkshire and the Humber
Hi I'm Chris, CSN is based in the Temple Newsam area of Leeds , we are extension specialist with a 5 star rating, all our work is available to view and also speak to our happy customers, if you want the job doing properly and the price to be competitive then please give us a chance , we will not let you down :)
Get in touch
Latest review:
Extensions- 3 Aug 2026
I would highly recommend CSN Builders to anyone looking for reliable, high-quality work. I recently hired them for a double-storey extension, and Chris and his team exceeded all expectations. They were consistently punctual, arriving early every morning, and demonstrated impressive expertise throughout the project. Thanks to Chris's guidance, we completely restructured the house—moving staircases, removing chimneys to maximize space, and carrying out a full rewire and plastering. Crucially, all work was completed strictly within the agreed timeframe, enabling our other contractors to stay on schedule. Fantastic service from start to finish!
Gss bricklaying
Rating: 5 out of 5
Extension Builder in Castleford, Yorkshire and the Humber
Fully qualified bricklayer with Over 10 years experience in the building trade. All aspects of building work carried out from •Flagging •Garden walls •Small exstention to big exstention. •Repointing work. •Create Openings. •Window and door supply and install. •Facia, soffits , guttering and dry verge.
Get in touch
Latest review:
Windows & Doors (uPVC & Metal)- 29 Oct 2026
Got out to us quickly, job carried out quickly and to a high standard. 5*
H2wdevelopments
Rating: 5 out of 5
Extension Builder in Castleford, Yorkshire and the Humber
We have 15 years experience in the building trade covering many different aspects including extensions, new builds, garden walls, garden landscaping including porcelain tiling and traditional stone flagging.
Get in touch
Latest review:
Extensions- 24 Nov 2025
Reece and his father-in-law Steve completed a single story kitchen extension [knock through] over the summer and my wife and I have nothing but high praise for the duo and the team of sub contractors he has working with him. From the first time sitting down with Reece to discuss the project he put you at easy, and all through the build nothing was too much trouble. They were so easy to work with, and the workmanship has been top notch. I would highly recommend Reece and his firm without any hesitation-
J R Construction (Leeds) Limited
Rating: 5 out of 5
Extension Builder in Castleford, Yorkshire and the Humber
Let me start by introducing myself,I am John,I am timed served brick layer by trade and I have worked for myself for over 20 years covering extensions,chimney breast removals,structural wall removals,loft conversions,basement conversions and building houses and all aspects of construction.A lump sum fixed price is given on all work carried out.Short list me with confidence as I am a trustworthy,reliable and a fully insured builder. Please feel free to view my feedback from previous customers.
Get in touch
Latest review:
Extensions- 26 Nov 2020
Hired John to do our single story extension. Nothing is too much trouble and his attention to detail was superb. His work is top quality and whoever hires John won't be disappointed. Top tip though get plenty of teabags in.
CTW Construction
Rating: 5 out of 5
Extension Builder in Castleford, Yorkshire and the Humber
Here at CTW Construction, we are a family based business in Leeds who have been in the industry for over 30 years. We have extensive knowledge and we can offer advice on how to bring your vision to reality. We mainly focus on new builds, extensions, driveways and patios but we also work very closely with other professionals in the trade so we can deliver the full package if that’s what you would require. We look forward to speaking with you soon. Scott, Dan and Chris.
Get in touch
Latest review:
Groundwork & Foundations- 13 Jun 2020
Guys were professional throughout. Turned up on time, stuck to COVID guidelines with regards to distancing from us when they showed us progress. Good communication and regular updates and checking we were happy with what they had done. Went above and beyond, thanks guys, would highly recommend them.
YC Construction ltd
Rating: 5 out of 5
Extension Builder in Castleford, Yorkshire and the Humber
At YC Construction we cover all aspects of construction, and landscaping needs. We are a friendly, reliable company who thrive off seeing our customers happy with a completed job. Our 5* reviews speak volumes.
Get in touch
Latest review:
Restoration & Refurbishment- 25 Feb 2025
Brilliant job done friendly and professional staff
Vint Renovations and Maintenance Limited
Rating: 5 out of 5
Extension Builder in Castleford, Yorkshire and the Humber
Dedicated,professional team which is focused on quality. Proudly serving our customers in Leeds and surrounding areas. Punctuality at work, hardworking and trusted! We suit and try to find solution to any budget
Get in touch
Latest review:
Extensions- 26 Mar 2021
Very happy with the work completed by Vint. The quote compared with the others i had was very favourable, and the quality of the work is very good. I had absolutely no issues of paying him his deposit as quoted in his terms and even though i was a few days late he never chased me once which i thought was very good. The Bricklayer who did the majority of the work kept me well informed at every point of construction and it was a pleasure to watch. Vint also did some other work for me while they were here, i had a problem with a soil pipe they quoted again which i was happy with and completed it the following day. The porch is now completed and my wife is very happy with it which makes my life so much easier, i would have no issues of recommending them to any one for the type of work i had done.
Ian Coote
No reviews yet
Extension Builder in Castleford, Yorkshire and the Humber
I have been bricklaying and building for 37 years now, undertaking all aspects of the trade. I am also a gold card CSCS holder, as I was requested to gain the NVQ qualification as well as my previous qualifications, when I worked at Leeds College of Building. I work to a high standard and can undertake, new builds, extensions, garden walls, renovations and restoration work. I have also taught the subject as well as assisted in writing books for students on the trade. I particularly enjoy doing the more decorative aspects of bricklaying such as curved and radial and patterned brickwork.
Get in touch
MYLAND BROTHERS HOME EXTENSIONS LTD
Rating: 5 out of 5
Extension Builder in Castleford, Yorkshire and the Humber
We are a small building company that focuses on RSJ installation and small domestic building extensions. I have been in the business for 15 years and usually do 3-4 house extensions per year. Our primary focus is the North Leeds area.
Get in touch
Latest review:
Extensions- 22 Nov 2021
From signing the contract at the start to sending the last payment, it was a smooth process. Very pleased with the finished product which was a single story extension. Always cleaned up after each day and continued communication and commitment throughout. Highly recommended and just all round nice lad!
WALKER&WOODBUILDLTD
Rating: 4 out of 5
Extension Builder in Castleford, Yorkshire and the Humber
We are a professional and reliable building company offering a wide range of construction services for residential and commercial projects. We pride ourselves on delivering high-quality workmanship, attention to detail, and completing every job on time and within budget. Our services include house extensions, full property renovations, and garden transformations. Whether you want to create more living space, upgrade your home, or improve your outdoor area, we have the experience to bring your ideas to life. We also specialise in groundworks, providing strong and dependable foundations, as well as structural alterations such as wall removals, steel installations, and layout changes. Every project is carried out with careful planning and in line with current building regulations. Customer satisfaction is our priority. We work closely with clients from start to finish, ensuring clear communication and a smooth, stress-free process. No matter the size of the project, we are committed to delivering results that last. Yorkshire Based.
Get in touch
D.Cooper building
Rating: 5 out of 5
Extension Builder in Castleford, Yorkshire and the Humber
D. Cooper Building is a trusted local building company based in Church Fenton, covering York, Selby, Leeds and the surrounding areas. We carry out extensions, garage conversions, structural alterations, brickwork, garden walls, patios and general building work. We pride ourselves on reliable service, honest pricing, clear communication and high-quality workmanship from start to finish. Whether you are planning a larger building project or need help with smaller alterations, we are happy to discuss the work and provide a clear quotation.
Get in touch
Latest review:
Landscaping- 20 Mar 2026
Dan and his team did an excellent job carrying out some hard-landscaping work in our garden - they transformed our old patio, built a retaining wall for an embankment with reclaimed railway sleepers and installed a new fence after removing a wall. We were really impressed with the communication from start to finish and they carried out the work to a high standard in the exact amount of time planned. Dan, Joel & Alfie are also the loveliest and most respectful people you could have working on your home. I would highly recommend D.Cooper Building - thank you again!
Hemsleys Roofing & Home Improvements
Rating: 4.6 out of 5
Extension Builder in Castleford, Yorkshire and the Humber
Hemsleys Roofing & Home Improvements is a fully certified roofing company serving West Yorkshire and the surrounding areas. We're a family-run business with a reputation for exceptional roofing. West Yorkshire based, we always ensure our prices are competitive, we don’t believe in hidden costs or call out charges and we even provide FREE written quotations just so you can be certain of our costs before choosing to work with us. With over 17 years in the industry we are highly experienced in roofing due to this we know what matters to our customers which is honesty, competitive pricing and quality workmanship!
Get in touch
Latest review:
Roofing (Pitched)- 17 Oct 2026
Great work, done in 2 days. Documented scope of work and insurance-back guarantee provisions are also very good.
Glam Living Ltd
No reviews yet
Extension Builder in Castleford, Yorkshire and the Humber
We are a construction company who builds everything from full houses to extentions to garden rooms
Get in touch
KTM Landscapes and Brickwork
Rating: 5 out of 5
Extension Builder in Castleford, Yorkshire and the Humber
KTM landscapes and brickwork was established in 2017 after working in construction since 2006, We offer a wide range skills from walling to paving and everything else in-between.
Get in touch
Latest review:
Fencing- 16 Dec 2022
Great work by Kyle and team. Job looks fantastic.
421 Group Limited
Rating: 5 out of 5
Extension Builder in Castleford, Yorkshire and the Humber
421 Construction (Trading under 421 Group Limited) offers services in all construction works in the domestic sector. With 10+ years in the building trade we understand that customer satisfaction is of the upmost importance and we will go beyond the extra mile to ensure this
Get in touch
Latest review:
Carpentry- 14 Oct 2026
First class result and efficient timescale to completion.
Gillespie Home Solutions
Rating: 4.9 out of 5
Extension Builder in Castleford, Yorkshire and the Humber
home solutions is a family business my self bricklayer/surveyor/project manager,my sons are qaulified plasterer and the other an electrician,son in law is aplumber along side other tradesmen we cover all aspects of the buiding trade from small jobs to new builds £2million insurance
Get in touch
Latest review:
Repointing- 13 Sep 2026
I couldn’t be happier with the work that Gillespie Home Solutions did with the repointing of the garden wall. From the start until the end the communication and advice were excellent. James did such a brilliant job with the repointing of the wall. I’ve already approached them about further jobs as I’m so pleased.

4.5

Top rated Extension Builders

Our Extension Builders in Castleford, Yorkshire and the Humber, are rated 4.5 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 Castleford, Yorkshire and the Humber?

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 Castleford, Yorkshire and the Humber 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 Castleford, Yorkshire and the Humber who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in Castleford, Yorkshire and the Humber?

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

Find extension builders in Castleford, Yorkshire and the Humber with MyBuilder

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

Step 2: Compare different extension builders in Castleford, Yorkshire and the Humber

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

Step 3: Hire Castleford, Yorkshire and the Humber extension builders with confidence

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

Castleford, Yorkshire and the Humber extension builders are ready to help. Use MyBuilder today to find the right professional for your home extension.

What to ask a Castleford, Yorkshire and the Humber extension builder before hiring?

Before hiring an extension builder in Castleford, Yorkshire and the Humber or extension building company in Castleford, Yorkshire and the Humber, 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 Castleford, Yorkshire and the Humber?

An extension builder in Castleford, Yorkshire and the Humber 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 Castleford, Yorkshire and the Humber 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 Castleford, Yorkshire and the Humber?

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 Castleford, Yorkshire and the Humber 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 Castleford, Yorkshire and the Humber 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 Castleford, Yorkshire and the Humber

Can an extension builder in Castleford, Yorkshire and the Humber help with planning permission?

Yes, many extension builders in Castleford, Yorkshire and the Humber 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 Castleford, Yorkshire and the Humber handle everything from design to construction?

Many Castleford, Yorkshire and the Humber 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 Castleford, Yorkshire and the Humber help with materials and finishes?

Yes, most extension builders in Castleford, Yorkshire and the Humber 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.