Extension Builders in St Albans

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 3.7 (12 reviews)

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Some of our top rated extension builders in St Albans

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JR Brickwork
Rating: 5 out of 5
Extension Builder in St Albans
I take on work covering all aspects of bricklaying, repointing, patio laying and any general maintenance work.
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Latest review:
Jack was punctual and professional and finished the work to a high standard. I will happily be recommending him to friends and family.
ASC
Rating: 5 out of 5
Extension Builder in St Albans
Plumbing & heating — full professional range ASC HEATING & PLUMBING is based in London and works across London and the surrounding areas. With 6+ years in business, we offer everything from emergency call-outs and repairs to installations, leak detection, drains, bathrooms, boilers, central heating, underfloor heating and commercial plant rooms — planned so you know scope, timescale and cost up front.
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Latest review:
Plumbing- 1 Apr 2026
Aurel and his son did a great job, really knowledgeable and helped with a difficult job. Not only were the results fantastic but the guys were a pleasure to have around.
Pro builders
Rating: 5 out of 5
Extension Builder in St Albans
Got 10 years experience in kitchen and bathrooms installation, plumbing and internal renovation
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Latest review:
Plumbing- 9 May 2019
Helpful, polite, tried best to resolve the mixer shower issue but the root problem is still to be sorted.
Premier Bricklaying Services
No reviews yet
Extension Builder in St Albans
Welcome to Premier Bricklaying Services! My name is Gojart, and I proudly run Premier Bricklaying Services with over 8 years of experience in bricklaying. I lead a small team of skilled bricklayers, personally overseeing and executing all projects to ensure our clients receive the best possible service. We specialize in a variety of services, including: -Extensions -New build - Brickwork & blockwork extensions - Garden walls - Pointing - Brickwork repairs and restoration - Structural repairs - Paving - Fencing - Gutter replacement Each project is completed to the highest standards, reflecting our commitment to excellence and customer satisfaction. If you have any questions or need further information about our services, please feel free to contact us. Thank you, Gojart Premier Bricklaying Services
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CNR Bricklaying & Building Services
Rating: 5 out of 5
Extension Builder in St Albans
CNR Bricklaying & Building Services. A friendly, family run brickwork business who speialise in all types of brickwork and restoration.
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Latest review:
Bricklaying- 19 Apr 2016
We have always found it a problem trying to match the correct tradesman to any work we have needed doing, so much so that many jobs have been left undone. You either end up with a personality clash, or just plain bad workmanship, well not this time. The entire process was a joy from start to finish, from the initial quoting process, to the completion and the standard of work was exemplary. Nothing seemed to be a problem for them and they were very pleasant to have around. We are busy drawing up a fresh list of jobs we need doing and would certainly thoroughly recommend them. If you have had any bad experiences in the past, give them a try, you will be very satisfied.
coppertree construction ltd
No reviews yet
Extension Builder in St Albans
Coppertree Construction Ltd. we are a professional building company offering reliable construction solutions. we focus on quality workmanship, clear communication and results you can depend on. we specialise in single story extensions and house refurbishments.
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SD Brickwork
No reviews yet
Extension Builder in St Albans
Hi my name is Stuart, I’ve been bricklaying for ten years now and love my job hopefully you like my profile
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Century21 lofts and extensions Ltd
Rating: 5 out of 5
Extension Builder in St Albans
Century21 lofts and extensions Ltd are a residential design and build company that offers the personal touch.the company was founded on the idea of providing quality workmanship working alongside our clients, to ensure we deliver an excellent service and building solution tailored to your requirements. We provide expertise and experience in full house renovations, loft conversions and single & double storey extensions. We provide comprehensive, no obligation, quotes and are more
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Latest review:
Carpentry- 12 Jun 2025
Replaced roof, doors and windows for a small lean too. Work completed in 2 days. Shev was very professional and so was the others. Very pleased with the job. Thank you!
R.G contractor’s
No reviews yet
Extension Builder in St Albans
Our family business undertakes job’s as small as a leek up to build a house from scratch We have been working around Hampstead ,Finchley,Barnet,etc.. for more then 10 years.
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ALLARAJ BROTHERS LTD
Rating: 5 out of 5
Extension Builder in St Albans
Welcome to ALLARAJ BROTHERS LTD At ALLARAJ BROTHERS LTD, we pride ourselves on delivering excellence in every project we undertake. With decades of experience in the construction industry, we have established a reputation for quality, reliability, and customer satisfaction. Our team of skilled professionals is dedicated to bringing your vision to life, whether it's a residential, commercial, or industrial project. We use the latest technologies and sustainable practices to ensure that every build is not only beautiful but also durable and environmentally friendly. We understand that each project is unique, and we tailor our services to meet your specific needs and preferences. From initial consultation to project completion, we work closely with you to ensure that every detail is executed to perfection. Choosing ALLARAJ BROTHERS LTD means choosing a partner who values integrity, transparency, and excellence. Let us help you create spaces that inspire and endure. Contact us today to discuss your next project and experience the difference that true craftsmanship and expertise can make.
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Latest review:
Restoration & Refurbishment- 5 Jan 2025
Very happy with the professionalism, and friendly polite communication. Adem is a perfectionist and can see things I noticed no one else could. The quality of workmanship was excellent. Will definitely be using them again.
Quality Build Ltd
No reviews yet
Extension Builder in St Albans
I am a professional builder with 20 years experience, I specialise in loft conversions and extensions. I have a full team providing customers with a high quality finish every time. I have plenty of references and photos of previous projects if required.
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PCG CONSTRUCTION LTD
No reviews yet
Extension Builder in St Albans
We are a family bussines over 20 years of experience in Roofs,Loft Conversion and Extension. We pride ourselves on our honest quoting process and providing a good finish that matches the highest standard to suit the clients buget.
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Electrical Solutions
No reviews yet
Extension Builder in St Albans
We've been helping homeowners from North/West London to Northamptonshire, transform their homes for over 10 years. Whether it's a loft conversion, extension, garage conversion, bathroom renovation, or a full house refurb, we've pretty much done it all. We take real pride in our work and treat every home like it's our own — keeping things tidy, on budget, and hassle-free. We know the area well, so we're clued up on local planning and what works for the properties around here.
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DSB Construction ltd
No reviews yet
Extension Builder in St Albans
DSB Construction is a multi-skilled company operating in construction, residential housing, refurbishments and construction maintenance, offering services to a diverse range of clients in the UK. With the help of our partners, we can leverage ideas, skills and entrepreneurial flair to deliver top-quality work in all sectors. We design, build, restore and refurbish buildings throughout the United Kingdom. We specialize in developing residential property specifically made for modern living.
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R cox building services Ltd
No reviews yet
Extension Builder in St Albans
I'm a general builder doing jobs from maintenance, refurbishments , extensions to house builds.
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Louis Dowling
Rating: 5 out of 5
Extension Builder in St Albans
I take pride and joy in any job I am doing, always take extra time to make sure the customer is totally satisfied and understanding, there is no job to big or too small so please don’t hesitate to get in touch - I range from groundwork’s such as installing drainage or digging footings to building extensions or garden walls/piers, also specialise in repointing. I also do a lot of landscaping work such as patios, driveways, fencing concrete shed bases etc… so please feel free to get in touch
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Latest review:
Bricklaying- 21 Sep 2026
Very good

3.7

Top rated Extension Builders

Our Extension Builders in St Albans, are rated 3.7 out of 5 based on 12 reviews from customers like you.

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

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

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

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

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

Find extension builders in St Albans with MyBuilder

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

Step 2: Compare different extension builders in St Albans

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

Step 3: Hire St Albans extension builders with confidence

After gathering all the information and quotes from your chosen home extension builders in St Albans, 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 Albans extension builders are ready to help. Use MyBuilder today to find the right professional for your home extension.

What to ask a St Albans extension builder before hiring?

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

An extension builder in St Albans 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 Albans 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 Albans?

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 Albans 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 Albans 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 Albans

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

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

Many St Albans 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 Albans help with materials and finishes?

Yes, most extension builders in St Albans 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.