Extension Builders in South Hampstead

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.1 (19 reviews)

Easily find verified South Hampstead Extension Builders. Just post your job to get quotes from MyBuilder's Extension Builders in South Hampstead.

Select a service

How it works

Post your job for free

Tell us about your job, and we’ll alert suitable tradespeople in your area. It’s simple and free.

Tradespeople respond

Once your job is posted, you’ll get responses from interested tradespeople through the website.

Review profiles and choose

Browse profiles, work history, and feedback, then choose who you wish to share your details with.

Some of our top rated extension builders in South Hampstead

3562 Results

Sort by:

Singh
No reviews yet
Extension Builder in South Hampstead
Plumbing
Get in touch
Eloah Israel security and construction Ltd
Rating: 5 out of 5
Extension Builder in South Hampstead
Hi, we are a company that prides itself on providing good work to our customers, making their dreams come true! we guarantee complete satisfaction and quality in carrying out our work, respecting the delivery times determined by our customers
Get in touch
Latest review:
Erick demonstrates remarkable thoroughness, reliability, and trustworthiness. His keen attention to detail is exceptional, and he leads a highly efficient team that promptly meets all demands and tasks. He successfully refurbished my entire house in Northampton, adhering to the projected timeline without any delays or setbacks. Throughout the project, he never dismissed any of my requests and fulfilled them all effortlessly. Erick is always easily accessible, promptly responding to calls and messages. I have enthusiastically recommended him to several of my friends, all of whom are immensely satisfied and grateful for his services. Furthermore, his pricing is fair and reasonable, leaving me extremely pleased with the quality of his work.
Parminder builder
No reviews yet
Extension Builder in South Hampstead
Hi my name parminder builder we doing kitchen extention loft conversion bathroom tiling driway fencing all tipe building work I have 30years experience
Get in touch
Perfect Square
No reviews yet
Extension Builder in South Hampstead
From refresh the look of one room,refurbish to extend existing building or build new
Get in touch
Hsb construction services ltd
No reviews yet
Extension Builder in South Hampstead
Refurbished houses,loft conversion, extensions ,roofing
Get in touch
Bettersiteconstructionltd
Rating: 2.5 out of 5
Extension Builder in South Hampstead
Hi am mr saini from Bettersite construction our team help to provide satisfy construction jobs we undertaken new built extension,loft,renovation,kitchen bathroom landscaping,krender, we ensure that we provide quality work my teamwork projects we can show if want people to see will admire definitely
Get in touch
Latest review:
Restoration & Refurbishment- 18 Apr 2026
I had my bathroom fully tiled and refurbished by Mr Madan and it was done with patience and professionalism. My house is 1930s build and it comes with its own challenges when doing a project, but Mr Madan dealt with every challenge, whilst keeping my costs down. I'm 100% happy with the end result and I will highly recommend him.
Sonu Services
No reviews yet
Extension Builder in South Hampstead
Hi, we are a reliable and experienced team of builders offering a wide range of services across plumbing, bathroom refurbishments, loft conversions, garage builds, and all aspects of painting and decorating. I take pride in delivering high-quality workmanship with attention to detail, whether it’s a small repair or a full home renovation. From fixing a leak to transforming a loft or creating outdoor garage spaces, I approach every job with professionalism and care. I believe in clear communication, fair pricing, and always leaving a clean, tidy finish. Whatever your project, I’m here to help make it hassle-free and built to last.
Get in touch
H S CONSTRUCTION LONDON LTD
Rating: 5 out of 5
Extension Builder in South Hampstead
HS construction is a reliable business based in Berkshire/West London covering all aspects of building work. Established since 2009, HSC has worked with many homeowners and architects to deliver high-quality structures across London and home counties . HSC are a registered and fully insured business ready to take on projects no matter how big or small . We offer a free no obligation quote and a site visit prior to quotation as well as having many links with experienced architects .
Get in touch
Latest review:
I have been using HS Construction London for many years ranging from a full house refurbishment to smaller unexpected issues. I have always found them to be reliable and genuine. There are never any hidden surprises in the end. Sunny listens to his customers and also gives decent advice where needed. Their work is of quality and has a long life. I particularly impressed with how they complete the job in a timely manner. All the materials that have been used are of great quality; and it shows. In addition, HSC has many contacts such as architects, suppliers etc which has made my life so much easier. Reasonably priced and with great knowledge, i would certainly use them again.
Dumitru
No reviews yet
Extension Builder in South Hampstead
Bricklayer
Get in touch
Europe United ltd
No reviews yet
Extension Builder in South Hampstead
Europe United ltd. is a UK-registered limited company, established in 2015, providing civil engineering and construction services with a focus on new-build and small-scale development projects. The company combines practical site experience with sound technical knowledge to deliver safe, compliant and cost-effective works for residential and commercial clients. Operating primarily in London and the South East, Europe United ltd undertakes activities such as groundworks, structural alterations, minor civils, and coordination of specialist trade contractors. The company works closely with design professionals, warranty providers and building control to ensure that projects are delivered in accordance with current regulations, industry standards and client specifications. Europe United ltd maintains a strong emphasis on health and safety, quality management and programme control. The company adopts a collaborative approach on site, prioritising clear communication, accurate record-keeping and proactive risk management to minimize disruption and achieve reliable project outcomes for clients and their stakeholders.
Get in touch
Punjab home innovation ltd
No reviews yet
Extension Builder in South Hampstead
Punjab Home Innovation Ltd is a trusted West London building and home renovation company with over 10 years of experience. We specialise in bathroom renovations, kitchen fitting, loft conversions, house extensions, tiling, flooring, painting and full property renovations. We provide free quotations, honest pricing and high-quality workmanship. Serving Hayes, Hillingdon, Southall, Ealing, Uxbridge and surrounding areas. Our Skills & Experience • Home renovations & refurbishments • Extensions & conservatories • Plastering, painting & decorating • Flooring, tiling & carpentry • Electrical & plumbing coordination • General building & maintenance We work closely with our customers from start to finish, offering honest advice, clear communication, and no hidden costs. Customer satisfaction is our top priority, and much of our work comes from repeat clients and recommendations. Please view our portfolio to see completed projects including full refurbishments, feature walls, plastering work, and custom building solutions. 1: Reliable Builders in West London – Quality You Can Trust 2: Professional Home Renovation & Building Specialists 3: Experienced Local Builders – Honest Pricing, Quality Results
Get in touch
VolodymyrBuild
Rating: 4.7 out of 5
Extension Builder in South Hampstead
We are small building company,a group of employee 18 skilled people. All our team are fully qualified. We do fully refurbishment,kitchen and bathroom installation, gas, heating and electrical works,plumbing,tiling,carpentry,flooring.We try to do the high quality jobs for clients to be happy and to use us again. We are over 11 years in building industry. We cover all London area.
Get in touch
Latest review:
Extensions- 16 Oct 2019
Not trust worthy, does not follow the contract, he pulled out in middle of my work in house three times. Never finished on time. Promised to come back and finish The fence and the toilet never come back despite numerous phone calls. I have leaking toilets in the wall big pigments of dampness on the wall paper on the wall adjacent to toilet. Promise to do the roof tiles then he said I cannot do it. Fitted the kitchen units wrong and did not connect the sink overflow pipe to the macerate ( leaking water under sink. Flooring tiles not even still have prominent corners . Front driveway is cracked as he promised to dig and put concrete but last minute changed his mind and put only cement and new slaps. Water pipe outside house is leaking . The stairs carpet and the wooden stairs not painted rightly and the carpet is not fixed right it is out. I paid him all the money left only 150 pounds but never come back to paint fence, summer house finishing and loft ladder. Brought materials and his workers and brought bills never saw some of it. Taken some materials in his van and never discussed this issue. Work meant 6 weeks and now 8 months and still not finished. Do not hire him he and his workers are not up to standards. Will love one from builder. Com come and see the unfinished and damaged in my house.
LONGVIEW CONSTRUCTION LTD
No reviews yet
Extension Builder in South Hampstead
Longview Design & Build specialises in high-end architectural design in London. Our team take pleasure in understanding your vision and then guide you towards completion. We act as a one-stop-shop by providing you with all the tools you need to deliver success. Whether you’re looking to expand or refine your home with a loft conversion, rear or side extension, or a top to bottom refurbishment, we are the actual Design & Build construction company you are looking for.
Get in touch
VIZ GROUP
No reviews yet
Extension Builder in South Hampstead
Viz Group is the builder of choice when it comes to residential and commercial construction projects in London With over 20 years of experience and hundreds of projects, you can rest assured that our team are able to tackle any of your building needs.
Get in touch
Elite Constructions London
New on MyBuilder
Extension Builder in South Hampstead
Elite Construction London Ltd has been one of the top providers of building and remodeling services in London for more than ten years. Our goal is to offer high-quality services at affordable prices. We complete projects on schedule and within budget because we are dedicated to quality and client satisfaction.
Get in touch
Bowman’s construction LTD
No reviews yet
Extension Builder in South Hampstead
Trusted & reliable builders serving Hertfordshire, Berkshire, Buckinghamshire & London. Over the years, Bowman’s Construction has built a strong reputation in the industry for delivering premium quality building services and consistently meeting targets. Whether it’s loft conversions, renovations, roofing projects or landscaping and groundworks, we strive to exceed our clients’ expectations. Each building project is carried out with creativity, precision and dedication, showcasing our commitment to excellence and customer satisfaction. Serving clients across Hertfordshire, Berkshire, Buckinghamshire, and Greater London, we ensure our construction expertise remains affordable without compromising quality or reliability. With over 30 years of experience, our team at Bowman’s Construction prides itself on being among the best builders in the industry. Our brand is founded on trust, quality workmanship, and reliability, ensuring we consistently meet our commitments to clients. We hold our reputation and the quality of our work in the highest regard. If you are interested in our construction services and would like to speak to us about how we can help, please contact us today.
Get in touch

4.1

Top rated Extension Builders

Our Extension Builders in South Hampstead, are rated 4.1 out of 5 based on 19 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 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.