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

3678 Results

Sort by:

Resst Construction
No reviews yet
Extension Builder in South Hampstead
Resst Construction Ltd has been delivering high-quality construction and refurbishment services since March 2011. With over 100 successfully completed projects, we have built a strong reputation for excellence, reliability, and attention to detail throughout South West and West London. We specialise in high-end refurbishments, transforming properties with exceptional craftsmanship and a professional approach tailored to each client’s vision. From residential renovations to complete property restorations, our experienced team is committed to delivering outstanding results on every project. Resst also focuses on Kitchen extensions, Loft conversions as well As Full house refurbs At Resst Construction, we pride ourselves on exceeding customer expectations through quality workmanship, clear communication, and dedication to client satisfaction.
Get in touch
BUTA PRO LTD
No reviews yet
Extension Builder in South Hampstead
BUTA Pro Ltd - is a renovation contractor, who are professionals, specializes in renovating the interior, exterior of existing homes and businesses. Our teams have a strong understanding of construction techniques and materials, as well as experience in project management. Also we are able to communicate effectively with clients, to understand their needs. Our architects and engineers will carefully check your needs, create a budget, designing the layout, and obtaining the necessary permits. We build-renovate your dreams...
Get in touch
Delta Alpha Building Services
Rating: 5 out of 5
Extension Builder in South Hampstead
Delta Alpha Building Services is a family run business with 35 years experience in domestic construction services. We undertake works from smaller jobs (eg. Door hanging) to large construction works (eg. Extensions and conversions).. All our tradesmen are fully qualified and insured. Free phone consultations and estimates, prompt reply and service. We treat your home as if it were our own.
Get in touch
Latest review:
April 2025 Delta Alpha built a raised decking to the back of my garden. We were very happy with the work and would definitely use this company in the future.
Brati Construction Ltd
No reviews yet
Extension Builder in South Hampstead
At Brati Construction we have over 15 years of experience working on a wide range of refurbishment projects. o.2.o3.3.7.0.1.3.3.3. We work across London on contracts of varying sizes. Please contact us to discuss any project you would like us to look at.
Get in touch
A Singh Construction Ltd
No reviews yet
Extension Builder in South Hampstead
We are a trusted and professional company with 4–5 years of experience in home construction, renovation, and interior finishing work. We specialize in bedrooms, bathrooms, kitchens, lofts, all building works and complete home renovation projects. We undertake both direct contracts and subcontract work, providing complete solutions from planning and design to execution and finishing. Our skilled and experienced team is committed to delivering quality workmanship, modern designs, and clean finishing. We focus on timely project completion, customer satisfaction, honesty, and transparency in every project. Our goal is to build beautiful spaces and long-term relationships based on trust and excellent service. Thanks
Get in touch
N&K
No reviews yet
Extension Builder in South Hampstead
All Forms Of Property Refurbishment & Maintenance In London & The Surrounding Counties To A Standard That Suits Your Budget
Get in touch
vms dynamic construction limited
No reviews yet
Extension Builder in South Hampstead
We do Loft conversion, kitchen extensions ,full house electrical work and plumbing work, House renovation, bathrooms, driveway work, CCTV installation,
Get in touch
RS Construction & Landscaping
No reviews yet
Extension Builder in South Hampstead
Our mission is to always exceed our Clients expectations. We’re a quality driven company that aims to achieve the highest standards while providing fully customised services at all times.The ultimate goal is always the client satisfaction, We're suppliers and contractors of General Building Works.
Get in touch
Saj
No reviews yet
Extension Builder in South Hampstead
Hi ,, Got a 25 years experience in trade .we are a full-service building contractors dedicated to turning your architectral vision into reality . Specializing in new builds , extensions and complex renovations ,our team manages every phase of your project from intial planning and site preparation to subcontractors co-ordinations and final inspectors . Here to help u .in any kind of building projects .thank u so much .
Get in touch
Strong Rock Construction Ltd
New on MyBuilder
Extension Builder in South Hampstead
Strong Rock Construction Limited We Build Your Dreams. Strong Rock Construction is a reliable and professional building company dedicated to delivering work to the highest standard. From new builds and house extensions to loft conversions, renovations and commercial projects, we bring experience, quality workmanship and attention to detail to every job. We work closely with our customers from the first idea through to completion, making the building process straightforward, professional and stress-free. New Builds • Extensions • Loft Conversions • Renovations • Commercial Projects • All Building Work Undertaken Strong Rock Construction — Building to the Highest Standard.
Get in touch
KT Structures
New on MyBuilder
Extension Builder in South Hampstead
KT Structures is a family-run building company specialising in high-quality home extensions, refurbishments and structural alterations across Kent, London and the South East. We provide a complete service from initial planning and structural design through to construction and final completion, ensuring every project is delivered to the highest standard. With a background in structural engineering and residential development, we understand how to create practical, beautiful spaces while maintaining quality, transparency and attention to detail. Whether you're extending your home, renovating a property or undertaking a complete refurbishment, we're committed to delivering exceptional workmanship, clear communication and a stress-free experience from start to finish.
Get in touch
Statim limited
No reviews yet
Extension Builder in South Hampstead
All types of construction works undertaken from ground works to complete fit out. Over 13 years experience and fairly priced, professional service and reliable builders. Based in Oxford and covering 20miles surrounding areas. Contact us
Get in touch
Kreshnik
No reviews yet
Extension Builder in South Hampstead
I've been in building trade working for others for more 15 years,now I think it's the time to start to work for myself
Get in touch
Ap Home Improvement Ltd
No reviews yet
Extension Builder in South Hampstead
Refurbishment,house extension,loft conversion,kitchen,bathroom,flooring, carpet,double glazing,plumbing,heating electric.garden,driveways.garage conversion All type of building work
Get in touch
Zahid
No reviews yet
Extension Builder in South Hampstead
Plastering
Get in touch
Bright construction limited
No reviews yet
Extension Builder in South Hampstead
All building work undertaken ,loft conversion, kitchen extension, full house refurbishment, plumbing ,electric, plastering, wood work, tiling, brickwork ,painting nd decorating etc
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.