Extension Builders in Greenwich

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 3.9 (19 reviews)

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

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 Greenwich

3178 Results

Sort by:

B&G Brothers Construction Ltd
Rating: 4.8 out of 5
Extension Builder in Greenwich
WELCOME TO B&G BROTHERS CONSTRUCTION LTD B&G Brothers Construction Ltd is a well-established building company based in Stanmore North West London. We carry out most types of building works, including: House Extensions Property Refurbishments Loft Conversions Ground Works And all type of repairs and alterations. You can be confident in our abilities to create you that perfect home using the highest quality of materials and best possible level of workmanship
Get in touch
Latest review:
Extensions- 11 Jan 2023
Rear garden extension done with new fully refurbished old house new electric new plumbing, all work done properly and good quality, experienced builders , +++ big job done within time frame and olso garden levelling with retaining wall ! Andrei and Alex recommend!
Bawabuilder
Rating: 5 out of 5
Extension Builder in Greenwich
We can extend
Get in touch
Latest review:
Fencing- 13 Mar 2026
We hired Bawa to install new fencing, and he did a fantastic job from start to finish. You can immediately tell he’s an all-rounder who understands construction very well. The work was carried out efficiently and to a high standard. Bawa has a great attitude, is very hard-working, and clearly takes pride in what he does. Communication was easy throughout, and the whole process felt smooth and professional. It was a real pleasure having Bawa work for us, and I wouldn’t hesitate to recommend him.
Brent Property Services LTD
Rating: 5 out of 5
Extension Builder in Greenwich
We are a building and refurbishment company. We are not the type of team that we can do everything, in our team the plumber is plumber , electrician is not bricklayer as well, everyone is doing what they trained for. Works are insured, reference available. At request we provide gas safety certificate and electrical certificate.
Get in touch
Latest review:
Restoration & Refurbishment- 18 Sep 2019
Work completed to a good standard. Thank you
Smiths
No reviews yet
Extension Builder in Greenwich
Guttering & Handyman Services You Can Rely On Need help around the house? I provide reliable guttering services along with a range of general handyman work — whether it’s fixing, fitting, or freshening things up. From blocked gutters to small repairs and odd jobs, I take pride in quality work and friendly, professional service every time. ✅ Gutter cleaning, repairs & installation ✅ Home repairs, maintenance & odd jobs ✅ Free quotes & fair pricing ✅ No job too small ✅ Clean, tidy, and dependable Get in touch today for a free quote — I’ll get it sorted, no stress.
Get in touch
Andonic86
New on MyBuilder
Extension Builder in Greenwich
The best dryliner Experienced plasterboard with 14 years of expertise. Specialising in all types of ceilings, partition walls, and stud walls. High-quality workmanship and reliable service.
Get in touch
WM Design & Build
No reviews yet
Extension Builder in Greenwich
I have a lot of experience in construction field. I work with my dad and cousins and we do all type of works. Professional and always on time.
Get in touch
MUJA BUILDERS LTD.
No reviews yet
Extension Builder in Greenwich
Muja Builders Ltd. I have over 20 years of experience in the building industry and specialise in all aspects of building All my work is done with pride and delivered to the highest standard possible.
Get in touch
Star 5 construction ltd
Rating: 5 out of 5
Extension Builder in Greenwich
Hi everyone,Star 5 construction Ltd provides best quality of work with affordable price and finish your project with in giving time. For coustmer satisfaction we will provide you our liability insurance details. Our services: New build Extension. New loft conversation and new Roofing. Supply and fit new double glazed windows and doors, with K silicone rendering or Standard plastering. All types interior and exterior design and build. All types supplied and install steel beams. Free quotes and estimate. Many more offers if you need any information feel free to send us email with your plan, happy to provide you all the information.
Get in touch
Latest review:
Mr singh and his team have done an excellent job,couldn’t have been more happier.Mr Singh’s experience and advice has saved me some serious money.really happy with the final product. It was big and complex task but it was completed in very efficient and professional manner.without any hesitation I’ll be recommending their services to friends and family
Inspired Creations London Ltd
Rating: 5 out of 5
Extension Builder in Greenwich
We undertake residential and general construction projects including extensions, loft conversions and renovations. We also manufacture and install bespoke kitchens, bedroom and all kinds of fitted furniture.
Get in touch
Latest review:
Extensions- 8 Dec 2021
Sukh and his team are tidy, experienced and skilled. The standard of work throughout the house is excellent. Will be keeping their contact details for any future projects. Would definitely recommend.
JC Group Property Sevices LTD
Rating: 5 out of 5
Extension Builder in Greenwich
JC Group Ltd is a reliable and experienced building company offering bathroom installations, plumbing, home extensions, and general building works. With over 30 years of combined industry experience, we take pride in delivering high-quality workmanship, clear communication, and projects completed on time and within budget. We are committed to customer satisfaction and maintaining the highest standards on every job, no matter the size.
Get in touch
Latest review:
We’re absolutely delighted with the extension and the overall experience from start to finish. The workmanship is to a very high standard, and everything was completed professionally and on schedule. Communication throughout the project was excellent, and we were kept informed at every stage. The team were reliable, tidy, and respectful of our home, and the finished extension has exceeded our expectations. We wouldn’t hesitate to recommend them to anyone looking for quality work and a stress-free build.
Apex Plan & Build LTD
Rating: 5 out of 5
Extension Builder in Greenwich
Apex Plan & Build is your trusted partner in turning vision into reality. Specializing in both domestic and commercial construction, we are dedicated to transforming houses into dream homes and businesses into efficient, modern spaces. With over 30 years of collective industry experience, our team ensures every project is completed to the highest standard, offering expertise in M&E works, including air source heat pumps and MVHR ventilation systems. We also bring cutting-edge innovation to your space with smart home automation solutions like Loxone and Control4, creating environments that are not only beautiful but also intelligent and energy-efficient. Apex Plan & Build is where your dream project is our top priority.
Get in touch
Latest review:
Very professional and organised. My rear extension renovation was impeccable, thorough knowledge of building regulations with a variety of services to choose from really put me at ease. The venetian plaster feature wall has become the centrepiece of our home.
LG builds
No reviews yet
Extension Builder in Greenwich
Experienced builders with a focus on quality and attention to detail. Delivering reliable, tailored solutions for every project. Always aiming to exceed expectations.
Get in touch
Iusi Stroy Limited
No reviews yet
Extension Builder in Greenwich
Iusi Stroy is a construction company based in the heart of United Kingdom, in London. We boast with an experience of more than two decades in the industry not only in UK but in Eastern Europe as well. You can definitely choose us for quality, adequate prices and fast timing!
Get in touch
ritz builders uk ltd
Rating: 5 out of 5
Extension Builder in Greenwich
Ritz Builders UK Ltd can take care of any property renovation or house extension, from complex double basement developments to a new builds. Our builders have worked on various type of properties across UK, giving them a new light and converting them into modern and contemporary living spaces. Our professional construction team, who come supported by a dedicated workforce, are well regarded by commercial and residential property developers.
Get in touch
Latest review:
The builder was reliable and dependable. Work was neat and to taste .
BRIDGE HOUSE BUILDING CONTRACTORS LTD
No reviews yet
Extension Builder in Greenwich
We mainly do residential refurbishment, extensions, loft conversions, factories, cold storage and other related building works. Our employees and building contractors are fully qualified with hands on work with years of experience. A lot of our work is carried out in local community areas.
Get in touch
Unique build
Rating: 5 out of 5
Extension Builder in Greenwich
Welcome to unique build we offer the full building and maintenance package covering all your building needs. Established in 2020 we are a new company but with a group of highly skilled tradesmen with attention to detail and taking pride in what they do giving you the best service possible. We are competitively priced and always happy to help.
Get in touch
Latest review:
Restoration & Refurbishment- 26 Nov 2020
Scott turned up on time to quote; arrived when he said he would; kept me fully informed and completed the job to time and to the standard expected. Can't ask much more from a tradesman than that. I would use Scott again.

3.9

Top rated Extension Builders

Our Extension Builders in Greenwich, are rated 3.9 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 Greenwich?

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

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

What are the hourly rates of extension builders in Greenwich?

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

Find extension builders in Greenwich with MyBuilder

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

Step 2: Compare different extension builders in Greenwich

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

Step 3: Hire Greenwich extension builders with confidence

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

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

What to ask a Greenwich extension builder before hiring?

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

An extension builder in Greenwich 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 Greenwich 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 Greenwich?

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 Greenwich 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 Greenwich 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 Greenwich

Can an extension builder in Greenwich help with planning permission?

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

Many Greenwich 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 Greenwich help with materials and finishes?

Yes, most extension builders in Greenwich 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.