Extension Builders in St James

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.2 (20 reviews)

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Some of our top rated extension builders in St James

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Mj constructions
Rating: 5 out of 5
Extension Builder in St James
Hi, I'm Abdul Majid, an experienced plastering, renovations, and construction expert with over 18 years of expertise. At Plaster House Ltd, we pride ourselves on exceeding client expectations through our commitment to delivering high-quality results and exceptional service. I offer free quotation with a visit. I provide written quotation with a break down of all the expenses so you know exactly what you are paying for. I look forward to providing my service to you.
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Latest review:
Plastering- 4 Feb 2019
MJ was great and has lots of experience. He got the job done in no time and was very clean and tidy whilst doing it. His prices were also fair compared to other quotes, and he knows what he is doing. We have more work to do, and will definitely call him back!
Chic Deco LTD
Rating: 5 out of 5
Extension Builder in St James
Chic Deco is one of the best and affordable Design & Build company. Over 15 years experience allowed as to bring positive changes in many properties. We offer a full range of services from planning to project completion, covering all aspects of the building works. We are happy to meet and provide you with a friendly free consultation and estimate.
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Latest review:
Extensions- 3 Feb 2019
Tiberiu and his team are really nice people as they did such a wonderful job, and gave me great alternatives. Good skilled and hardworking people in his team. I have already recommended him to my friends and family and I will definitely use them again.
Hills builders
Rating: 5 out of 5
Extension Builder in St James
Hi I'm Lee a general builder with 25+ years experience, specialising in: * Landscaping * Groundwork’s * Brickwork * Roofing * Carpentry * Extensions/ Refurbishments * Emergency call outs I pride myself on being being highly knowledgeable and reliable, focusing on clear communication from the start to enable projects to be completed exactly what is envisioned by you, on time and within budget. Get in touch for a free no- obligation quote Regards Hill's builders
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Latest review:
This lovely gentleman that carried out my works carried out exactly what I envisaged he was extremely polite tidy & professional I was so happy with the finished work Quite refreshing to have found this young man
CapitalFix Construction
Rating: 5 out of 5
Extension Builder in St James
Essex based construction company. Over 22 years of trade experience. No job too big or small! -Extensions -Loft conversions -Brickwork -Driveways -Landscaping -Renovations Simple. Honest. Building.
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Latest review:
Bricklaying- 5 Sep 2023
Unbelievable work, hard working. And helpful every step off the way would highly recommend!!
AL Construction
No reviews yet
Extension Builder in St James
Hi, I’m Alex. I run a small team specialising in general construction and property refurbishments across South East London and beyond. No job is too big or too small — from repairs and renovations to complete refurbishing projects, we handle it all with attention to detail and reliability. If a project requires specialist skills, I work with a trusted network of subcontractors to make sure every part of the job is done to a high standard. I take pride in delivering quality work, on time, and keeping my customers happy.
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Build Lofts
No reviews yet
Extension Builder in St James
WELCOME to BUILD LOFTS LTD !!! We provide a hi standard services for building jobs, including Loft conversions, New Build , Home extensions, Roofing,Garages, Landscaping ,Rendering .All i teriors like bathrooms and kitchens , all interiors-exteriors to a very competitive price & quality.
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Apex Legacy Ltd
No reviews yet
Extension Builder in St James
Apex Legacy, deliveries unparalleled craftsmanship and exceptional quality. Our highly skilled team manages all construction aspects with professionalism . From residential to commercial, renovations to developments, we exceed expectations. Transparent communications, meticulous attention to detail and strict safety adherence ensure superior results . Trust us to bring your vision to life .
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E&E Building
No reviews yet
Extension Builder in St James
I am a skilled and reliable tradesperson with hands‑on experience across a wide range of construction and home improvement services, including bathroom fitting, brickwork, gardening, extensions, and general building work. With a strong focus on quality, safety, and customer satisfaction, I take pride in delivering professional results that stand the test of time.
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ABS Development Group Ltd
No reviews yet
Extension Builder in St James
ABS Development is your expert in Refurbishments and Emergency repairs
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Seraj
New on MyBuilder
Extension Builder in St James
Reliable and experienced contractor offering high-quality tiling, painting, plastering, and interior decoration services. I specialise in indoor and outdoor tiling, including garden paving, full bathroom renovations, and kitchen splashbacks. We also provide professional wall partitioning, plastering, and custom decorative finishes. Dedicated to precision, clean workmanship, and timely completion. Contact us for a reliable, professional, and friendly service
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Dmytro
No reviews yet
Extension Builder in St James
DM BUILD GROUP LTD is a reliable construction company specialising in home extensions, full property refurbishments, loft conversions, renovations and commercial fit-outs. We also provide drylining, suspended ceilings, partitions, carpentry, painting & decorating and general building services. We pride ourselves on delivering high-quality workmanship, clear communication and completing every project on time and within budget. Customer satisfaction and attention to detail are at the heart of everything we do.
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Appexconstruct
No reviews yet
Extension Builder in St James
We deliver quality construction with precision, safety, and reliability. We create residential, commercial, and industrial projects that stand the test of time. In our team we value innovation, sustainability, and client satisfaction—building not just structures, but lasting partnerships.
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Samy
No reviews yet
Extension Builder in St James
I’m on the busines more than 10 years please letmy help we’d your garden Driwey fence and autbuilding For more information please call mail or text
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PMC Developments
New on MyBuilder
Extension Builder in St James
Carpenter from Ireland living and working in London since 2012
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DM Builder
No reviews yet
Extension Builder in St James
I am a general builder and have 15 years experience in the trade. I have worked for large companies which have enabled me to gain a vast knowledge in many areas. I have completed large refurbishments to smaller projects. I work with qualified Electricians and plumbers so am confident that I can complete tasks.
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Darren
No reviews yet
Extension Builder in St James
Hi there, this is Darren. We are a family run business with 20+ years in this industry. We have long experience in a wide range of the construction and decoration work: such as loft conversion, extension, roof repair, bricklaying, garden paving, rendering, plastering, tiling, and flooring. We pride ourselves on attention to details and consider for our clients. If you like the work that we have done in the photo gallery, please list us to engage into your project and deliver the best service.
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4.2

Top rated Extension Builders

Our Extension Builders in St James, are rated 4.2 out of 5 based on 20 reviews from customers like you.

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

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

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

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

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

Find extension builders in St James with MyBuilder

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

Step 2: Compare different extension builders in St James

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

Step 3: Hire St James extension builders with confidence

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

What to ask a St James extension builder before hiring?

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

An extension builder in St James 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 James 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 James?

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 James 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 James 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 James

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

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

Many St James 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 James help with materials and finishes?

Yes, most extension builders in St James 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.