Extension Builders in St Asaph

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.5 (2 reviews)

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

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 St Asaph

159 Results

Sort by:

Skeffington properties
Rating: 5 out of 5
Extension Builder in St Asaph
Skeffington Developments are happy to provide high quality building works, no job is too big OR too small. -building works -refurbishments -upvc double glazing -facias and soffits -roofing -rendering -New builds
Get in touch
Latest review:
Conservatories- 16 Feb 2021
We have used Skeffington Properties for the last two jobs on our house. The first was resealing of the conservatory and second was sorting our porch roof out to stop a continuous drip that started last week. Both jobs completed promptly after our requests and tidied after themselves. Thanks
M Donnelly Buildings & Refurbishment
Rating: 5 out of 5
Extension Builder in St Asaph
Here at m.donnelly building and refurbishment we offer high standards of work and give 110 percent on all our work with a 24/7 phone number to ease all worries. We offer all aspects of the job to make things easier for our clients from full house refurbishments and extensions down to gardens and drainage. We have been going over 10 years we specialise in extensions refurbs,plastering and windows
Get in touch
Latest review:
Extensions- 20 Mar 2024
Mike and his team are brilliant. They can't do enough for you and, speaking as a single woman who has had tradies try and the mick take several times, I've never felt like he was ripping me off. Any extra work was done without a fuss. Just watch him with dishwasher doors 😉
D w lewis Building contractor
No reviews yet
Extension Builder in St Asaph
I am a north wales based building contractor with over 30 years experience.services provided include brickwork, stonework,extensions, hard landscaping, slabbing, bathroom kitchen and all forms of tiling.
Get in touch
Gill & Sons Plastering and Building
Rating: 5 out of 5
Extension Builder in St Asaph
At Gill & Sons Plastering & Building, we specialise in delivering premium finishes and bespoke building solutions for discerning homeowners. We’re a father and son team bringing together over 60 years of combined industry experience and knowledge. Our trade qualifications include: NVQ Level 3 in Plastering City & Guilds Plumbing City & Guilds Joinery We also work with other trusted tradespeople, all fully vetted, skilled, and qualified—so you can be confident your project is in safe hands. Every project we undertake is approached with precision, care, and an uncompromising commitment to quality — because we understand that your property deserves nothing less. Operating in North Wales and areas such as Abergele, Conwy, Llandudno, Prestatyn and others, our fully qualified team is on hand for any plastering and building needs. Plastering and building is a messy job but we believe that the clean up is just as important as the task at hand.
Get in touch
Latest review:
"I highly recommend will for any plastering work. He arrived exactly when he said he would and maintained excellent communication throughout. His craftsmanship, from fitting the plasterboards to the final skim, was flawless. It’s hard to find someone who balances such high technical standards with perfect punctuality. Plus, his great sense of humour made having him on-site a pleasure.
LGM building & Refurbishment
Rating: 3.7 out of 5
Extension Builder in St Asaph
At LGM We undertake home renovations and construct extensions. With a fully qualified & insured team behind us there isn't much we can't do. We deal with building control & organise materials so you don't have to, giving you a stress free journey. We come from generations of builders before us handing down vast amounts of knowledge that we apply to our practices giving the best, most cared for results Friendly, reliable & extremy proud. FB: L.G.M Building & Refurbishment
Get in touch
Latest review:
Plastering- 28 Dec 2021
Lloyd from LGM Builders called to give me a quote to plaster my bedroom walls and ceiling. He was very helpful and friendly. He suggested putting insulation boards on the outside wall to keep the heat in. I also needed one new board on the ceiling. I was told the whole job would be 1 day prep and 2 days work. Lloyd arrived alone and completed all the work in 1 day and asked to be paid. I never expected to have any problems and paid him by bank transfer that evening. I then discovered that the new boards covered my window sill and also didn't allow enough room for the new radiator to be fitted without moving the pipes. Lloyd purchased a new window sill on my behalf and said he would return to fit later in the week. As the plaster dried I noticed lots of indentations and it was quite rough in places. When Lloyd arrived I mentioned the faults in the plaster so that it could be fixed. Lloyd's personality completely changed, his tone was aggressive, which made me feel very vulnerable and uncomfortable in my own home. He said he had done a good job and if I was a painter I would know that the indentations would need filling prior to painting. He then said he wasn't going to waste his time putting the new sill on when he could be working for someone else.
Ravenwood Construction Ltd
No reviews yet
Extension Builder in St Asaph
We are a limited company which covers all aspects building work from extentions, roofing, new bathrooms. We cover it all. Providing high quality standards at affordable prices.
Get in touch
ESP Services Ltd
No reviews yet
Extension Builder in St Asaph
We are a local family run company with the expertise and experience to to complete your project to the high standard you would expect.
Get in touch
Martin Jones
No reviews yet
Extension Builder in St Asaph
Our reliable well run business with 30 years experience will offer you a tidy and professional job. Covering all aspects of work New builds,extensions, block paving, patios, conservatory’s, garden/retaining walls, repointing, stonework, concreting, fencing, All work carried out to a very high standard at affordable prices.
Get in touch
njt builders
Rating: 5 out of 5
Extension Builder in St Asaph
From design to compleation,we take care of it all. Over 35 years of experience in the building industry.
Get in touch
Latest review:
Plastering- 7 Aug 2025
Nigel and his team came and completed the job with ease they were on time very clean and the work was outstanding would recommend to anyone Thanks
b gibney
Rating: 5 out of 5
Extension Builder in St Asaph
civil engineering general building drainage driveways, demolition , barn conversions , underpinning, landscaping
Get in touch
Latest review:
Extensions- 27 Aug 2025
From the initial decontamination and demolition through to the foundations, superstructure, and roofing, every stage was completed to a very high standard. Their attention to detail — including insulation, drainage, structural steelwork, and future-proofing the roof for later development — showed real skill and experience. The whole project has been carried out professionally, with clear communication at every step, as well as giving us advice and guidance too, they're knowledge and skill is impeccable. They are now currently in process of removing old external walls and installing the steel work. We are extremely happy with the results so far and would not hesitate to recommend Brendan and Andy for any building work!
Griffiths Building Developments LTD
Rating: 5 out of 5
Extension Builder in St Asaph
⭐ Why Choose Us? *Established, reputable company (since 2018) *Skilled, reliable, and friendly team *Full project support from start to finish *High-quality workmanship with attention to detail *Competitive pricing and free, no-obligation quotes *Fully insured for your peace of mind We’re always happy to help! 🔧 Our Services Include: *New builds & extensions *Renovations & refurbishments *Loft/garage conversions *Structural work & RSJ installation *Patios, driveways & landscaping *Brickwork, blockwork & general building *Kitchens, bathrooms & interiors All types of general construction If you’re looking for a trustworthy team who deliver great results and take pride in their work — we’d love to hear from you. works.
Get in touch
Latest review:
Bricklaying- 13 Jan 2026
I had a retaining wall built on my property (in Wrexham). GBD started as agreed, I Initially had a bricky and a labourer, as the job went on they then also supplied an apprentice to help speed the job. All the guys (including Steve the boss) were skilful, knowledgable, informative, patient and reliable. They were very easy to communicate with, I had a couple of request, they were only too happy to help with my requests. After having a few other quotes, GBD were not the cheapest, however, Steve knew what I wanted and gave some good advice of how the wall should be built. The job took a little longer than was first scheduled for, there was no extra cost. (Steve stayed at his original quote). I would have no hesitation in recommending GBD for any building work. Thank you Steve and your team.
Karl Evans
No reviews yet
Extension Builder in St Asaph
Hi, we are a team of reliable and experienced bricklayers with a strong focus on quality workmanship and customer satisfaction with over 40 years experience in our team We take pride in delivering neat, durable work whether it’s garden walls, repairs, or larger projects. We always aim to keep things straightforward — turning up on time, keeping the site tidy, and making sure the job is done properly from start to finish. We understand how important your home is, so we work closely with customers to make sure you’re happy every step of the way. No job is too small, and we are always happy to offer honest advice where needed. If you’re looking for a team who are dependable who takes pride in their work, feel free to get in touch.
Get in touch
J.K.ModernBuild Ltd
Rating: 5 out of 5
Extension Builder in St Asaph
Hi, my name is Jamie. my company is J.K.ModernBuild, I have many years of experience in the building trade and can offer advice on the job you need to be undertaken. we take on many trades and furnish to a very high standard and professionalism, we do - extensions - Renovations and refurbishment - Wall knock through and steel work - groundwork - landscaping - plastering & rendering - full bathroom renovation - tiling - kitchens and bedroom fittings - soffits, fascias & guttering I take pride in my business and work, we make sure that the customer are happy and work closely to make sure the project is on schhedule. contact me and I would be happy to help and answer any questions you may have. No job to big or small
Get in touch
Latest review:
Bathroom Fitting- 9 Oct 2024
Fantastic end result didn't think it would be achievable. Jamie was a great lad communication excellent clean and tidy worker.A couple of delays but was worth it in the end.Looking forward to him carrying out a few more jobs now,highly recommend.
BP Brickwork
No reviews yet
Extension Builder in St Asaph
Hello, I’m Ben I’m a Bricklayer looking to grow my business.
Get in touch
george lee brickwork
No reviews yet
Extension Builder in St Asaph
hi were a 2 and 1 bricklaying gang with over 40 years experience between us, all types of brick/block work can be done, footing , extensions ,garden walls
Get in touch
G.H.WILLIAMS BRICKWORK
No reviews yet
Extension Builder in St Asaph
20 years experience in brickwork
Get in touch

4.5

Top rated Extension Builders

Our Extension Builders in St Asaph, are rated 4.5 out of 5 based on 2 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 St Asaph?

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 St Asaph 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 St Asaph who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in St Asaph?

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

Find extension builders in St Asaph with MyBuilder

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

Step 2: Compare different extension builders in St Asaph

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

Step 3: Hire St Asaph extension builders with confidence

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

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

What to ask a St Asaph extension builder before hiring?

Before hiring an extension builder in St Asaph or extension building company in St Asaph, 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 St Asaph?

An extension builder in St Asaph 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 St Asaph 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 St Asaph?

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 St Asaph 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 St Asaph 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 St Asaph

Can an extension builder in St Asaph help with planning permission?

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

Many St Asaph 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 St Asaph help with materials and finishes?

Yes, most extension builders in St Asaph 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.