Extension builders in Belfast

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

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Some of our top rated extension builders in Belfast

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Lj construction
No reviews yet
Extension Builder in Belfast
My name is Lee. I have been in the building trade for 26years. I specialise in bricklaying, fencing and landscaping. From building garden walls to extensions and new builds. I also do repairs to existing works. Competitive prices
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Mcshane Plastering
Rating: 1 out of 5
Extension Builder in Belfast
McShane Plastering is a family-run plastering and building business built on six generations of experience in the trade. Plastering is at the heart of our business, with skills and knowledge passed down through generations of the McShane family. Today, we’ve expanded our services to offer customers a complete range of plastering, renovations, property refurbishments and extensions. From a single room requiring a perfect skim to a complete home renovation or extension, we can manage the project from start to finish, coordinating experienced and trusted trades where required. We pride ourselves on quality workmanship, reliability, attention to detail and clear communication. Every project, large or small, is treated with the same care and professional standards. Six generations of experience. Traditional workmanship. Modern standards. McShane Plastering built on experience, trusted for quality.
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Latest review:
Plastering- 23 Sep 2026
Amazing work done
MCMD CONTRACTS
Rating: 5 out of 5
Extension Builder in Belfast
MCMD Contracts are an established and trusted contractor based in Northern Ireland. From our base in Downpatrick County Down our experience and expertise is employed by many home owners, self builders and commercial clients on projects such as new builds, renovations, kitchen and bathroom renovations and paving or patio jobs.
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Latest review:
Fascias & Soffits- 9 Jun 2020
Excellent work, really happy with results. Would definitely recommend
PFB Building Services
Rating: 5 out of 5
Extension Builder in Belfast
Due to the volume of timewasters on this platform i want to inform potential clients of the way the MyBuilder app works for us tradesmen / tradeswoman: Before i can contact you about your job proposal, MyBuilder charges me a shortlist fee to recieve your contact details, so for anyone just wanting advice on their job, with all due respect i will not be paying £10-£20 just to give you advice about something that wee Jimmy down the street is going to do for you. If you are serious about your job, have the funds to complete the work and would like a quotation with intent of actually doing the work please see P Brammeld Bricklaying on the FB platform u will get all you need from there. With over 20 years of hands-on experience in the building and construction industry, I specialise in delivering high-quality Extensions, Renovations, Groundworks, Concreting, Paving and Bricklaying projects. My approach combines practical expertise with a strong attention to detail, ensuring every job is completed to a high standard, on time, and within budget. I take pride in transforming ideas into solid, lasting structures—whether it’s expanding a home, revitalising an existing space, or laying the groundwork for new developments. From initial planning through to completion, I offer a reliable, professional service built on trust, craftsmanship, and a commitment to client satisfaction.
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Latest review:
Groundwork & Foundations- 13 Aug 2026
The job was done to a very high standard, explained everything clearly, listened to what my needs were for the build. Worked at a great pace and nothing was too much bother. The concrete base and fence was done in a timely manner as well. Would have no hesitation recommending Paul and team
Richmond home improvements
No reviews yet
Extension Builder in Belfast
Richmond home improvements we specialise in in all aspects of bricklaying and paving
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Sweeney Building Services
No reviews yet
Extension Builder in Belfast
Fully qualified Carpenter and Joiner installing high quality kitchens and bathrooms. Over 35yrs experience on all aspects of building works , including Tiling, Plastering, roofing, Joinery, Windows, stairs, flooring tiled or wooden, including engineered flooring. Was installing Bespoke doors for the Metropolitan police at all their stations throughout London now residing in N Ireland
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Ronoc contract services
Rating: 3 out of 5
Extension Builder in Belfast
I am a time served joiner, in all aspects of joinery from roofing to 1st and 2nd fixing and sliderobes. I have also been involved in extensions conversions and new build homes.
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Latest review:
Decking- 13 Jul 2020
I hired ronac to put a large deck area in at my mums house and also a new flagged area under my mums garden shed I wasn’t happy with either job the flagged area under the shed was finished very poorly he didnt line up the flags put in cuts to make it easier for himself but took the full money not a professional job The deck is not finished as he has not put on the finished tops to newel posts after many txt msgs asking him to do this and a few phone calls he promised he would he has stil not done this this deck was done in April during the lockdown He took the money and did not finish job I would not hire this person again
jabrickworks
Rating: 5 out of 5
Extension Builder in Belfast
All building work: full builds, extensions, garages, sheds, pathing and flagging and landscaping.15 years experience in all aspects of building. From adding garden features to refreshing an old house or garden to new builds.
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Latest review:
Extensions- 14 Mar 2024
Exceptional! The recent single-story extension to our property has been a great experience, thanks to the outstanding workmanship delivered by Adam and his team. From the initial consultation to the final finishing touches, every aspect of the project was executed with precision and care. The extension and kitchen integrates into our existing home, both aesthetically and functionally. Adam took care of everything; brickwork, plastering, plumbing and electrical work. Adam was professional ensuring the work was a smooth and stress-free experience for us. We are delighted with the final result and have no hesitation in recommending Adam and his team to anyone seeking high-quality building works.
Bluestone construct LTD
No reviews yet
Extension Builder in Belfast
Just new to my builder Experienced in this field for 10 years, I take on all aspects of joinery and construction including renovations, extensions and new builds. Specialising in bespoke building contracts and joinery both exterior and interior.
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McNeill & Strange Ltd
No reviews yet
Extension Builder in Belfast
We are expert groundworks and building contractors, and property developers. Preparing sub-surfaces, de-vegetation, installing footings and foundations, concreting, and making provisions for utilities and drainage. Providing construction services to both the residential and commercial sectors. Includes conversions, extensions, refurbs, fit-outs, shell & core, and more. Refurbishing, converting, and adding to existing properties and complete new-build/demolition developments.
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PaulHillenPlantHireLtd
Rating: 5 out of 5
Extension Builder in Belfast
Groundworks and Digger Hire company. All works carried out, include Concrete works, foundations, storm and sewers install and repairs. Sewage treatment plant/ septic tank and soak away. Drainage, fencing etc We have a wide range of clients from commercial and private sectors. References can be supplied at request.
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Latest review:
Groundwork & Foundations- 29 Sep 2022
Great communication, great work. Highly recommend.
ph joinery/building
No reviews yet
Extension Builder in Belfast
Am full qualified joiner.who can do full house refurbishment from wooden floors. Kitchens. door. Allso do extension. Also have different trades that work along with me. plumber, electrician, plaster and tiler.so we can do jobs start to finish.
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Mourne Insulation Services
Rating: 4.8 out of 5
Extension Builder in Belfast
Here at Mourne Insulation services we specialise in Cavity wall, loft insulation and Ventilation. We are a small family run buisness and guarantee a quality and professional service for all our clients!
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Latest review:
Insulation- 19 Mar 2024
Quickly and easily
Hanna home maintenance
No reviews yet
Extension Builder in Belfast
Hanna home and maintenance. Experienced and qualified. Joinery 1st and 2nd fix Extension and renovations New builds All your building needs
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CML Contracts
No reviews yet
Extension Builder in Belfast
CML Contracts offer a wide range of services, these include; >Earthworks >Groundworks >Pipe Laying >Drainage >Concrete Laying >Paving >Kerbing >Landscaping >Plant Hire >Muck Shifting >Tractor Hire
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Oaklands joinery services
Rating: 5 out of 5
Extension Builder in Belfast
Here at oaklands joinery services we thrive on customer satisfaction... no matter how big or small the job is infront of us... we carry out all aspects of joinery from roofing contracts to fine internal finish work
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Latest review:
Roofing (Pitched)- 5 Mar 2021
James was extremely helpful with our roof problem, he answered us very quickly and was out that week to assess. He was honest in what we needed and with his professional opinion. He gave us all options for our repairs and a reasonable price for the work. He came out and did work in extreme weather putting himself at risk & did a fantastic job. He followed up to make sure the work was to good standard and also effective. We will be calling on him again for other jobs. Highly recommended, thanks James!

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

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

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

What are the hourly rates of extension builders in Belfast?

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

Find extension builders in Belfast with MyBuilder

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

Step 2: Compare different extension builders in Belfast

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

Step 3: Hire Belfast extension builders with confidence

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

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

What to ask a Belfast extension builder before hiring?

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

An extension builder in Belfast 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 Belfast 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 Belfast?

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 Belfast 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 Belfast 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 Belfast

Can an extension builder in Belfast help with planning permission?

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

Many Belfast 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 Belfast help with materials and finishes?

Yes, most extension builders in Belfast 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.