Extension Builders in South Hampstead

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 South Hampstead

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AMS INTERIORS LIMITED
No reviews yet
Extension Builder in South Hampstead
We are a family business with over 40 years of experience within the construction and fit out industry. We are happy to undertake simple DIY through to new Build garden rooms / extensions. We have an eye for detail and know what is required to achieve quality whilst maintaining a tight control on budget and programme.
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Bendave construction ltd
No reviews yet
Extension Builder in South Hampstead
Hello everyone, I am a general builder. I have been working in construction industry as a contractor for more then 15 years. I love what I do which makes me good at what I do. I undertake all kind of building work including extensions, loft conversion, new dwellings.
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Help in Hand Builders
Rating: 5 out of 5
Extension Builder in South Hampstead
DORKING based Builders. Extensions. Refurbs. Bathrooms & Kitchens. Structural steel work. Design + Build + Renovate. Restoration & Refurb Specialist working in SURREY.
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Latest review:
Extensions- 5 Dec 2017
Wow! What can I say about Ian and his team, he came in on time, on budget and carried out the work to a fantastic standard. His friendly and positive nature made him a pleasure to have in our home . I’d reccomend him ( and already have) to friends and family. Thanks again and have a great Xmas .
DJD BUILDING AND REFURBISHMENT CONTRACTORS LTD
No reviews yet
Extension Builder in South Hampstead
I AM A BUILDING AND REFURBISHMENT CONTRACTOR, I HAVE OVER 35YRS EXPERIENCE IN THE BUILDING INDUSTRY, IM A QUALIFIED CARPENTER AND JOINER, I DO VARIOUS TYPES OF WORK RANGING FROM FITTING A SINGLE DOOR TO A TOTAL REFURBISHMENT OF A PROPERTY WHICH CAN INCLUDE DOING GROUNDWORK'S, PATIO'S, ETC
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Matthews Construction Group ltd
No reviews yet
Extension Builder in South Hampstead
Matthews Construction Group Ltd Matthews Construction Group Ltd is a trusted construction and roofing contractor serving London, Kent and the South East. We specialise in roofing, refurbishments, extensions, alterations, property maintenance and general building works for residential and commercial clients. With over 20 years of construction and commercial experience, we understand the importance of delivering projects safely, on time and within budget. Our approach is built around clear communication, honest pricing and high-quality workmanship from quotation through to completion. Whether you require a roof repair, full roof replacement, home refurbishment, extension or ongoing maintenance works, we take pride in providing a professional and reliable service with customer satisfaction at the heart of everything we do. We are fully insured and committed to maintaining the highest standards of workmanship, health and safety, and customer care. Services include: • Roofing Repairs & Replacements • Flat & Pitched Roofing • Extensions & Alterations • Refurbishments • Property Maintenance • Insurance Reinstatement Works • Commercial Maintenance • General Building Works Free quotations available throughout London, Kent and Essex
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Bohdan Havdyda
New on MyBuilder
Extension Builder in South Hampstead
Bohdan Havdyda we take pride in delivering high-quality workmanship with a reliable, friendly, and professional service. Our core expertise is in painting and decorating, helping homeowners and businesses transform their properties with attention to detail and a high-quality finish. Whether it’s a single room, a full property redecoration, or exterior painting, we are committed to achieving results that exceed expectations. Alongside decorating, we work with a trusted team of experienced tradespeople, allowing us to offer a wide range of home improvement services, including carpentry, flooring, roofing, loft conversions, extensions, and general property renovations. This means our customers can rely on one team to manage projects of all sizes from start to finish. We believe in honest communication, fair pricing, and leaving every job clean and tidy. Customer satisfaction is at the heart of everything we do, and we work hard to build lasting relationships through quality workmanship and dependable service. Whether you’re looking to refresh your home with a professional paint finish or planning a larger renovation project, we’re here to help.
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Leonidas Simakou
New on MyBuilder
Extension Builder in South Hampstead
Leosim Construction Ltd provides professional construction, refurbishment and finishing services across London and the surrounding areas, backed by more than 15 years of hands-on experience. Our services include plastering and rendering, painting and decorating, bricklaying, hard flooring installation and loft conversion works. We undertake everything from wall and ceiling skimming, plasterboarding, dry lining, bonding and patch repairs to internal and external rendering, decorating, flooring, brickwork and wider property improvement projects. Whether it is a small repair, a single-room refurbishment or a larger renovation project, we aim to deliver reliable, tidy workmanship and a high-quality finish. Based in Brentwood we undertake jobs acorss London and the surroundings. We pride ourselves on clear communication, punctuality and keeping the work area clean throughout the job. Materials can be supplied where required, and we offer free, no-obligation quotes for projects of all sizes.
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MGB SOLUTIONS LTD
Rating: 4.4 out of 5
Extension Builder in South Hampstead
Professional Kitchen Fitter with 20 years experience.
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Latest review:
Kitchen Fitting- 18 Nov 2025
Original timeline stretched a bit due to his other jobs but this was fine. Mario started work early and finished early which suited us. He came to visit and we agreed a price at the start and he stuck to it even when he realised some additional plumbing would be needed. He was honest about some accidental damage. Attention to detail is good and he has all the kit. I would have given 5 stars- he's a proper professional and I enjoyed working with him. 3 stars only because as soon as the work was done he became incommunicado (I messaged a week later to ask how to lift door which had dropped down a few mm on fridge). The warranty advertised is one of the reasons I went with MGB which was £200 more expensive than contenders so this was disappointing. I would have asked him to do my parents' new kitchen too otherwise.
HMR Builders Ltd
Rating: 5 out of 5
Extension Builder in South Hampstead
I have 19 years experience in the building trade. We can fit new bathrooms, kitchens, build extensions, plumbing, electrical work, staircases, tiling, plastering and most other jobs you may require doing around your house. We have also completed HMO’s, worked with many letting agencies and landlords directly. We are reliable and trustworthy and will work with our customers to make their ideas and dreams a reality. I provide free quotes and am fully insured. I can come and look at a job at a time to suit you including evenings and weekends.
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Latest review:
Conversions - General- 11 Sep 2026
Hired HMR Builders for my HMO project in Gillingham. Melvin did great quality work, gave great advise, guided through the whole process and has become a trusted partner I have engaged with him on other projects. I would highly recommend.
Colescrete
No reviews yet
Extension Builder in South Hampstead
We are very organised, all work undertaken is kept tidy so aware of clients needs. Been in the trade now for 38 years building / renovating property’s from building to paving. Hard and soft landscaping. Our team consists of a plumber electrician Trademen and labours No job to big or too small
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Source facilities Maintenance
Rating: 5 out of 5
Extension Builder in South Hampstead
Refurbishments, Extensions, New builds, Period property, Home maintenance. Recent residential works include a new build project adjacent to a 16th century gatehouse in Epping Copped Hall, Extension and refurbishment of a house in London N5, Full refurbishment with extension in Waltham cross southfield road. We have worked for several large to medium sized companies on internal fit out contracts including a board room for waitrose and a value added facility for Wholefoods kensington.
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Latest review:
Source FM recently helped us fit out a new 8000 sq ft warehouse in Hackney. The project included installing new electricals, installing new fire and security alarms, repairing and repainting a heavily used concrete floor, redecorating, servicing the heating etc. The project had a very tight time frame and Source FM often had to work around members of our team as we started moving in while work was still ongoing. I'm pleased to say, all the work was completed in time and to a very high standard. We've since used Paul and Bill for a number of smaller projects, both at the warehouse and in our offices.
ANGEL HOUSE
No reviews yet
Extension Builder in South Hampstead
We offer a wide range of services, which includes all services related to the construction, repair, landscaping of residential or commercial real estate and its surrounding zone. Our large team consists of real qualified professionals with many years of experience in various construction projects.
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MG Homes London Ltd
New on MyBuilder
Extension Builder in South Hampstead
I have 20 years of experience for wood work it’s our family business, my father, elder brother and uncles is same work, if anyone wants bespoke kitchen and wardrobe you are on right place
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We Fix We Build Kent Ltd
New on MyBuilder
Extension Builder in South Hampstead
Welcome to We Fix We Build Kent, we provide premium property maintenance and construction services across Kent, specialising in high-end residential homes. From bespoke extensions to expert plumbing and heating engineering, our skilled team delivers flawless craftsmanship and a reliable, executive-standard service.Whether you are looking to expand your living space or require precision maintenance for your property, we ensure your project is completed to the highest possible standard. Our Core Expertise: High-End Extensions & Renovations, Plumbing & Heating, Elite Property Maintenance & Care
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skimmer
No reviews yet
Extension Builder in South Hampstead
i do skimming jobs
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Pukka paving
No reviews yet
Extension Builder in South Hampstead
If you’re looking for paving done the pukka way, you’re in the right place. Pukka Paving provides expertly installed driveways, patios, and paving solutions with a focus on quality, durability, and clean finishes. Solid work, fair pricing, and results you’ll be proud of.
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4.2

Top rated Extension Builders

Our Extension Builders in South Hampstead, 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 South Hampstead?

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 South Hampstead 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 South Hampstead who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in South Hampstead?

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

Find extension builders in South Hampstead with MyBuilder

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

Step 2: Compare different extension builders in South Hampstead

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

Step 3: Hire South Hampstead extension builders with confidence

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

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

What to ask a South Hampstead extension builder before hiring?

Before hiring an extension builder in South Hampstead or extension building company in South Hampstead, 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 South Hampstead?

An extension builder in South Hampstead 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 South Hampstead 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 South Hampstead?

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 South Hampstead 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 South Hampstead 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 South Hampstead

Can an extension builder in South Hampstead help with planning permission?

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

Many South Hampstead 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 South Hampstead help with materials and finishes?

Yes, most extension builders in South Hampstead 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.