Extension Builders in St Albans

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 3.7 (13 reviews)

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Some of our top rated extension builders in St Albans

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Buckingham and sons ltd
Rating: 5 out of 5
Extension Builder in St Albans
We are family run business established over 10 years ago covering London in all aspects of building work and property maintenance. We pride ourselves on honest work and good ethics and look forward to working on your next project.
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Latest review:
Restoration & Refurbishment- 10 Jul 2026
Calm, collected and reassuring. J took all the pressure of me - completed all the work in a timely manner to the highest of standards. I really like how he took care of things that I didn't think of. He gave me lots of options about other requirements and where we could save on costs. Really highly recommended!
What 4 Building Solutions LTD
Rating: 4 out of 5
Extension Builder in St Albans
Here at What 4 Building Solutions LTD, We cover all aspects of the of the building process. From helping with design using our amazing architects. Getting your ideas through planning and building regs, then making your dreams come true. We cover Herts, London, Essex & Cambridgeshire. Taking on any size project from new builds to a refurb or even just a new kitchen we can help. We offer man and machine hire and licensed waste removel. We have all the trades on hand ready to go so we have no delays on our projects. We have the SOLUTION for your project... We are pround Members of the Federation of Master Builders and TrustMark the only Government Endorsed for Quality work.
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Latest review:
Extensions- 21 Mar 2026
I am a Chinese Lady honourably established at Hollyview Close, London NW4 3SZ, of at least sixty years of age, and distinguished by the wearing of spectacles, which bespeak both careful attention and the wisdom accrued through decades of devoted service. I am entrusted with the disciplined and esteemed practice of electrical repair and maintenance, a vocation carried out with the utmost reverence for order, propriety, and the impeccable standards befitting households of the highest esteem. Upon my arrival, I bring forth with equal dignity both the meticulous execution of all electrical works and the ceremonial offering of fine chewing gum, bubble gum, and freshly selected lemons, each item presented with deliberate attention to freshness, quality, and presentation, in the grand tradition of British hospitality and courtly decorum. The chewing gum is carefully curated to encourage measured mastication, fostering calm, poise, and contemplative steadiness; the bubble gum is reserved f
B & M Home Improvement
Rating: 5 out of 5
Extension Builder in St Albans
We are a local and reliable Plumbing, gas safe and Home Improvement Company in London and surrounding areas.I gained my experience working in the Plumbing and gas department. No matter whether you require help with plumbing, power flushing, boiler installation, bathroom, kitchen, extention, flooring we take on all building work. We provide a full interior decorating service for domestic and commercial.
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Latest review:
Extensions- 10 Apr 2014
Max and Bob completed the extension on time and within budget. There were no hidden extras and despite Bob being on holiday for two weeks, Max worked hard and lon. The extension is 6m x 5m. There were issues with Building Control which Max sorted out and did everything to meet their requirements. The extension is built to a high standard, kitchen cabinets fitted well, tiling very good and we are pleased with the quality of their work. We are using B&M again as we are confident that although they are not tghe cheapest, the quality of their work is of a high standard. Besides, it is always a pleasure to deal with Max who is a gentleman, patient and listens to what is required.
Drago construction
Rating: 5 out of 5
Extension Builder in St Albans
Drago construction started trading in 2023; the company is able to support homeowners with jobs in the following categories: 1- Fencing/Gates 2-Gardening 3-Brickwork
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Latest review:
Fencing- 19 Sep 2026
Drago did a great job replacing our fence. He is very hard working and does an excellent job. I would highly recommended him
Gent Electrical
Rating: 5 out of 5
Extension Builder in St Albans
Undertake all works from changing a light switch to the design and installation of domestic rewiring.No job too small. Building control notification as well
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Latest review:
Electrical- 25 Jan 2023
Gentjan was a thorough professional and a true gentleman. Quoted competitive price, came exactly on time and did job to very high precision. There were some unexpected issues (due to my bespoke kitchen setup, but he improvised amazingly - thinking out of the box. I cannot recommend him enough. Will definitely use him again.
Flori plasterer
Rating: 5 out of 5
Extension Builder in St Albans
👋 Welcome to my page! I’m a professional plasterer and renderer with 13 years of experience in the trade. We specialise in all types of plastering and rendering, including internal and external work, and can also take care of any additional construction work required to complete your project. 🏠 Quality workmanship 🔨 13+ years of experience ✅ Reliable and professional service 📍 Domestic & commercial projects Whether it’s a small repair or a full house renovation, feel free to get in touch for a free quote or advice. Thank you for visiting my page! 🙌
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Latest review:
Plastering- 25 Sep 2026
Flori did a great job with plastering in my bathroom. He was really polite and cleaned up well after himself making sure it was all tidy once he finished. Plastering job looks good with a nice polish to it. Would recommend hiring Flori. Easy communication and it's always good when a price is said and kept to. So many trades men suddenly add extras to do the job but Flori came in bang on his quote. Top job and top man.
Alb Homes Ltd
Rating: 5 out of 5
Extension Builder in St Albans
Alb Homes Ltd is a family-run business that’s evolved from humble beginnings. With over 25 years of experience and 100+ projects completed. We are always on hand to answer any questions and place a strong emphasis on documentation – allowing you to have a continuously transparent understanding of your project. When building with Alb Homes Ltd, you can rest easy with the confidence that you are in competent hands.
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Latest review:
Extensions- 26 Sep 2023
Well priced completed the project on time even though there was some unforseen works along the way. I had a back extension and some steel beams installed very happy with the the completed works
Korab Builders Ltd
Rating: 5 out of 5
Extension Builder in St Albans
Having completed many successful projects, we have the experience and the expertise needed to fulfil majority of our client wishes. We provide vast range of services: •new builds •extensions •conservatories •loft conversions •converting office premises into flats •refurbishment •plumbing •electrics •plastering and decorating •fitting kitchens •fitting bathrooms •tiling •landscaping and paving
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Latest review:
Restoration & Refurbishment- 20 Oct 2022
I contacted Korab to remove my chimney breast, he came to have a look, quoted me for the job and then started the work. Once the work was completed I was over the moon with the work that Korab and his team had done and the service they provided and I asked them to have a new full refurbished house (new electrical work, new plumbing, new plasterboards, new skimming, new doors, new laminate flooring, new tiles, new skirting boards,new bathroom), side extension (which korab helped me to design)and garden patio and a new front garden wall. Korab was a very friendly and easy-going person from the moment I met him in regards to my first project (the chimney breast). He would pay attention to every detail and always ask if I was happy with the work which was being carried out. Korab and his team would always ensure that the work space was left clean. Korab and his team were more than happy to have an input and make suggestions when I needed them too, he also make me feel comfortable to ask any question. Korab and his team did an amazing job in my house and completed the work to a high standard in which I was so happy about. They truly are an experienced group of guys and I would highly recommend them to anyone. What a pleasure it was to have met them. Thankyou once again!
Palm Real Estate Ltd
Rating: 4.9 out of 5
Extension Builder in St Albans
I'm Mohsin from Palm Construction With over 7 years of experience in the industry, we've honed our skills to perfection. Whether you're looking to renovate or enhance your home, we are here for you. We take pride in delivering exceptional results and ensuring your project is completed on time and within budget. From minor fixtures to major refurbs, we've got you. No job is too big or too small, and we've dedicated to providing personalised solutions that meet your unique needs.
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Latest review:
Polite
Zef rrucaj
Rating: 5 out of 5
Extension Builder in St Albans
High focused professional operating in building projects. I like to sort out my clients’ needs and i am dedicated to deliver them the best possible work. Like to be punctual in any phase of my work. I offer the best work at the fantastic price .
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Latest review:
Fencing- 13 Mar 2022
Zef was prompt to respond and came on the agreed time to give me a quote. The quote was reasonable and he came back the next day on time to complete the job. I am very happy with the job, he was careful and left the site neat and tidy. Will definitely hire him for any future jobs.
Pgm grup services ltd
Rating: 5 out of 5
Extension Builder in St Albans
Welcome to PGM GRUP SERVICES LTD . We are a professional and reliable groundworks and landscaping team dedicated to transforming and maintaining your outdoor spaces to the highest standards. With extensive experience in all aspects of ground engineering and hard landscaping, we pride ourselves on delivering top-quality craftsmanship, durable structural work, and competitive pricing. No matter the scale of the project, we treat every property with maximum respect, ensuring clean, efficient, and precise execution from start to finish. Our Specialist Services Include: Driveways & Paving: Block paving, resin, concrete, and pathways built to last. Fencing & Edging: Secure, high-quality fencing installations and neat perimeter edging. Brickwork & Walling: Professional bricklaying for garden walls, retaining walls, and boundaries. Drainage & Eco Channels: Complete drainage solutions, surface water management, and eco channel installations to prevent flooding. All Groundworks: Excavation, site clearance, foundations, and sub-base preparation. Why Choose Us? Guaranteed Workmanship: Fully committed to structural safety and flawless finishes. Honest & Fair Pricing: Transparent, free, no-obligation quotes with no hidden costs. Reliable & Tidy: We arrive on time, work efficiently, and always leave the site spotless. We are fully insured and ready to bring your project to life. Contact us today to discuss your requirements!
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Latest review:
Landscaping- 13 Aug 2026
Easy 5* review! PGM services restored my old flagstone patio that had fallen into complete disrepair. Petru was really friendly and communicative. He arrived at the agreed time to look at the site, he listened to what I wanted and even suggested some great ideas. He later sent a quote with various different options allowing me to choose the price point that worked best for me. Something I especially valued was that, throughout the job, he kept me updated and consulted me whenever a decision needed to be made (e.g. when choosing the colour of the pointing). He respected and supported my choices even when it wasn’t the easiest option for him and his team. His team did a great job! They are trustworthy and reliable. They arrived on time, got the job done and I’m really pleased with the final result. Would definitely use PGM services again!
Skaci & Sons Ltd
Rating: 5 out of 5
Extension Builder in St Albans
General work from scratch to finish. New Build, extensions, loft conversion, painting, plastering, basement, bathrooms & kitchens. 18 years experience in the trade.
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Latest review:
Extensions- 16 Sep 2021
Very happy with the extension. Eddie and his team were best priced which was the reason we went with them, and he brought in a crack team of brickies, roofers and notable mention to the tilers.
T&M CONSTRUCTION LIMITED
Rating: 4.9 out of 5
Extension Builder in St Albans
At T&M Construction Ltd, we specialise in high-quality residential renovations, refurbishments, and bespoke carpentry across Bedfordshire, Hertfordshire and surrounding areas. Founded and led by a skilled carpenter with over 10 years of hands-on experience, our company is built on precision, structure, and attention to detail. Unlike general contractors who outsource blindly, we understand construction from the inside out, starting with the framework and finishing to the finest detail. We offer a complete multi-trade service, including: • Full house refurbishments • Kitchen and bathroom installations • Structural carpentry • Flooring & bespoke woodwork • Plastering & decorating • Electrical & plumbing coordination Our approach is simple: ✔ Clear communication ✔ Clean and organised sites ✔ Honest pricing ✔ High-end finish We take pride in delivering projects that are not only visually impressive but built to last. Most of our work comes from repeat clients and recommendations, a reflection of our reliability and standards. If you’re looking for a professional team that values quality over shortcuts, T&M Construction Ltd is ready to help.
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Latest review:
Extensions- 10 Jul 2021
Tom and his team were absolutely magnificent. Working with me together to find solutions and ideas. Extremely reliable, and working all hours knowing I had a deadline that had to be met. A friendly and trustworthy team, whom I would have no problems in recommending. I am a very happy customer.
CSO Construction & Surveying Ltd
Rating: 5 out of 5
Extension Builder in St Albans
At CSO Projects &Surveying Ltd, we specialise in high-quality construction, refurbishment, and property services tailored to both residential and commercial clients. Our experienced team delivers everything from Energy Performance Certificates (EPCs) and stock condition surveys to full refurbishments, extensions, damp surveys/treatment, and garden transformations. We pride ourselves on fast turnaround, honest advice, and a commitment to excellent workmanship. Whether you’re a homeowner, landlord, or developer, we’re here to bring your vision to life with reliable service and transparent pricing.
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Latest review:
Damp Proofing- 11 May 2026
My experience with Samuel was excellent. He provided a professional, comprehensive, and high-value damp survey for my basement. The final report was very thorough, including a detailed technical assessment and numerous photographs that clearly explained the situation. What really stood out was his willingness to answer several follow-up questions regarding the specific remedial work he suggested. His expertise helped clarify that the issues were environmental rather than structural, which provided great peace of mind. Highly recommended for anyone needing a clear, honest, and professional assessment.
Reian construction ltd
Rating: 5 out of 5
Extension Builder in St Albans
Reian construction ltd , we covered all aspects of work extension renovation, loft basement, build and design
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Latest review:
Extensions- 15 Sep 2022
Besim and his team carried out some structural steel work on our home while we were away. I was a little nervous about this but the communication was excellent, as Besim sent regular pictures and updates on the progress. The completed work was first class and the team even did some small jobs outside the original remit which was a very kind gesture. WIll certainly use Besim again and would highly recommend him to anyone.
Sam plumber
Rating: 5 out of 5
Extension Builder in St Albans
I'm very good plumber.I'm correct with the customer never have problem back
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Latest review:
Bathroom Fitting- 2 Jun 2026
Amazing work, Sam and his team are dedicated professionals that have real eye for detail. The toilet needed changing position which required a significant amount of rework of pipes. But they made it look easy.. tiling work was done perfectly and Sam helped me find the right products before starting this project. Really happy with the work done and was completed in a timely manner. Highly recommend.

3.7

Top rated Extension Builders

Our Extension Builders in St Albans, are rated 3.7 out of 5 based on 13 reviews from customers like you.

Quality screening

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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.