Extension Builders in London

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.1 (18 reviews)

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Some of our top rated extension builders in London

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A.K construction
No reviews yet
Extension Builder in London
Hi i am skilled builder I doo all jobs Extension Loft Electric Plumbing Fencing Carpentry
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Y&F Building and Decoration
New on MyBuilder
Extension Builder in London
Building & Decoration is a premier contracting company led by a professional electrical expert. We specialize in high-quality home renovations, offering a complete service from structural work and expert electrical installations to premium interior decoration. With our technical background, we ensure every project is safe, compliant with regulations, and finished to the highest aesthetic standards. Your vision, built on a solid and safe foundation."
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G n r design and build ltd
No reviews yet
Extension Builder in London
we have 14 years experience, All building work undertaken, loft conversion, extension, plaster,plumbing,electrical,painting,decorating,carpentery, joinery, flooring, tiling,roofing, brickwork, ground work
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NSV HOMES LTD
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Extension Builder in London
NSV Homes Ltd is a premier residential construction and procurement firm based in Dagenham, serving East London and the Home Counties. Unlike standard builders, we operate a Direct-to-Manufacture Supply Chain, allowing us to deliver high-specification renovations without the "middleman" markups. With over 15 years of experience, we specialise in Full-House Renovations, Extensions, and New Builds, bridging the gap between design and delivery. Our Competitive Advantage: We hold direct trade accounts with the UK's leading manufacturers, ensuring our clients access premium materials at exceptional value: Kitchens: Direct Partner for Burbidge & Son, & Omega PLC, more. Lighting: Specified Partner for Sensio Lighting, more. Flooring: Direct Partner with Victoria Carpets, Riviera Home, and Hugh Mackay, more. Joinery: Bespoke media walls and cabinetry via HUX London, more. Core Services: Rear Extensions & Structural Alterations: From groundworks to steel sign-off. High-Spec Kitchens & Bathrooms: Supply and installation using our direct procurement channels. Full Property Refurbishment: Project managed from concept to completion. Media Walls & Bespoke Joinery: Custom-built using direct-supply materials. Why Choose NSV Homes: We combine the reliability of a family-run contractor with the buying power of a procurement house. We don't just build; we source, supply, and install the highest quality finishes for your home.
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I craft limited
No reviews yet
Extension Builder in London
The best in what we do
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Go&Ko Services Ltd
Rating: 5 out of 5
Extension Builder in London
Go&Ko Services LTD is a 24 hours Property maintenance company for the Public and Commercial with trust and confident in quality and high standard services. Our offers the following services on a residential and commercial basis: - General Building/Extension - Loft conversion - Refurbishment - Kitchen/bathroom installation - Carpentry - Tiling/Flooring - Plumbing - Drainage - Metal restoring/welding - Electrical - Decorating - Handyman - Fencing/Decking -
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Latest review:
VERY PROFESSIONAL WORK AND GOOD COMMUNICATION
BLUE LOFT CONSTRUCTION LTD
No reviews yet
Extension Builder in London
Design, Build & Remodel We pride ourselves on our commitment to provide a professional and speedy service at all times, whilst maintaining the highest quality of work. We take on all types of jobs from small domestic work to larger commercial projects, all carried out to the highest standards, and at very competitive prices. We take on all building work from plumbing and electrics to conversions and extensions. Contact us today to discuss your requirements.
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Bricklayer paving concrete kerbs
No reviews yet
Extension Builder in London
Professional Bricklayer based in London with 15+ years experience in construction, Fully qualified (CSCS Blue Card, NVQ Level 2). Experienced in managing small teams and delivering projects safely and efficiently. Services include:• Brickwork & Blockwork• Extensions & Structural Work• Garden Walls & Landscaping Brickwork• Repairs & Repointing I focus on quality, precision, and customer satisfaction. Clean and tidy work guaranteed. Available for private and subcontract work. Competitive prices and free quotations.
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Algarve General Building LTD
No reviews yet
Extension Builder in London
Good Day, it's a pleasure to meet you! My name is Antonio Pereira and I am the proud owner of the Algarve General Building. I would like to take this opportunity to introduce myself and extend a warm welcome to you. We are dedicated to providing excellent services and ensuring customer satisfaction at AlgarveGeneralBuilding.
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Builtwell Ltd
No reviews yet
Extension Builder in London
Hello, we are experienced construction company based in West London with a team of multi skilled workers. We start as self employed business in 2007 and then expand to limited company. Specialised in high quality finish work over years we completed several "back to brick" refurbishments inc basement and loft conversions. We also specialised in kitchen and bathroom refurbishments and working with some major London’s maintenance company helping them looking after clients properties. Thank you
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P Multani Builder
No reviews yet
Extension Builder in London
I'm a builder. I do property repairs and carry out maintenance. I specialize in plastering, rendering and skimming. I have a great experience in these fields providing high quality finishing. The following are the jobs that I carry out on regular basis: *Properties refurbishment *Extensions *Driveways *Loft conversions *Bathrooms (complete bathroom job) *Garden patios, fencing, decking, turf, artificial grass All work carried out to the highest standards by professional team.
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Misindaci
No reviews yet
Extension Builder in London
From grand to the roofing plumbing electrics time in England i’ve got a job
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Fariborz
No reviews yet
Extension Builder in London
I've done lots of construction services like cement work, brickwork, Tiling , etc. keeping my customer happy and satisfied is my main goal
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Deep builders
No reviews yet
Extension Builder in London
Hi, my name is Deep, and I’m the founder of Deep Builders. With over 10 years of experience in the construction industry, I specialize in all types of building work, including: • Home Extensions • Loft Conversions • Full Renovations • General Building and Maintenance At Deep Builders, we pride ourselves on delivering high-quality workmanship, clear communication, and reliable service from start to finish—no shortcuts, no surprises. I’m a professional builder with extensive experience in all types of building work, including home extensions, loft conversions, full renovations, and general construction. I’m dedicated to delivering high-quality craftsmanship, reliable service, and results that truly transform homes. We proudly serve clients across London, Manchester, Luton, and surrounding areas, helping homeowners bring their vision to life—whether it’s expanding space, updating interiors, or transforming a property from the ground up.
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JK GBS LTD
No reviews yet
Extension Builder in London
I do clean my job
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D&T building company
No reviews yet
Extension Builder in London
we are proud to announce to you D&T building company we cover all building work from wall repairs to full extensions, driveways, built BBQ’s, out houses, converting rooms into gyms and fencing, with over 20 years experience and a high standard of work, because of the pandemic and things slowing down it is time for us to branch out to new areas and new people, our portfolio is very large with 100% customer satisfaction and a very friendly team that can carry out all your needs
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4.1

Top rated Extension Builders

Our Extension Builders in London, are rated 4.1 out of 5 based on 18 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 London?

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

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

What are the hourly rates of extension builders in London?

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

Find extension builders in London with MyBuilder

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

Step 2: Compare different extension builders in London

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

Step 3: Hire London extension builders with confidence

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

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

What to ask a London extension builder before hiring?

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

An extension builder in London 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 London 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 London?

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 London 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 London 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 London

Can an extension builder in London help with planning permission?

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

Many London 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 London help with materials and finishes?

Yes, most extension builders in London 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.