Extension Builders in Westminster

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.2 (19 reviews)

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Some of our top rated extension builders in Westminster

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Rc builders
Rating: 5 out of 5
Extension Builder in Westminster
Family run company with 20+ years experience using time served and fully qualified tradesmen Finishing to a high standard regardless of your budget. All work fully guaranteed
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Latest review:
Restoration & Refurbishment- 30 Apr 2026
Job was completed quickly and to a great standard. Reasonably priced and we would definatley use them ahain
Crown plastering & building
Rating: 5 out of 5
Extension Builder in Westminster
A family business run by father and son with over 30 years experience combined. Being a family business our work is our reputation and therefore all works carried out are to maximum potential! Clean, realiable and great pride is taken leaving customers happy and without hesitation for recommendations. Specialising in plastering, rendering, traditional Italian Venetian polished plaster and all aspects of building works also undertaken.
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Latest review:
Bathroom Fitting- 20 Sep 2017
We hired Luca for a job that involved a variety of work across our entire flat. Being totally new to renovation work and having been stung by other builders, meeting Luca was a breath of fresh air – he was friendly, helpful and honest. Luca did an great job for a very reasonable price. He’s fairly new to contracting bigger jobs, but he’s got a lot of previous experience as a tradesman and his plastering in particular was perfect – we’ve had loads of compliments on the quality of his walls and ceilings. He was always on time, always communicated with us fully, and was a pleasure to have around the flat. He made a real effort to keep disruption as minimal as possible and was very patient with us about stuff needing to be moved from one place to another. It wasn’t the easiest job and there were a couple of problems and extras, but Luca takes a lot of pride in his trade and worked extremely hard to keep us happy. We had a couple of plumbing issues arise but he went well above and beyond to resolve them, coming back for 2 days after the job was due to be finished to make sure that everything was working properly. This is far more than we expected, and we did really trust that Luca wasn’t the sort of person that would leave anything unfinished. We’re so chuffed that we met Luca and with the excellent work he did, and would love to work with him again. Luca is going to go on to big things, so if you get the chance to hire him now, we'd recommend him without hesitation.
Ben
No reviews yet
Extension Builder in Westminster
Over 10 years of experience in the building trade, building new and outstanding homes. Specialised in loft conversions, house extension, kitchen refurbishment, bathrooms, full house remodel and refurbishment, garden and pavements, roofing and repairs, certified plumbing, gas and electrician.
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Visu Verum
No reviews yet
Extension Builder in Westminster
Visu Verum Design and Build was founded in 2010 to provide a range of services within the design and build sector for home owners and property professionals. Our projects range from small refurbishments and extensions, to large new build properties throughout London, Elmbridge and surrounding areas. We work in a totally transparent way to guarantee each project is delivered to the highest possible standard for the right budget.
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Sunshine design & build ltd
Rating: 5 out of 5
Extension Builder in Westminster
Sunshine Design & Build Ltd “Turning your vision into reality” We are a London-based construction company specializing in: • Full home renovations • Bathroom installations and tiling • Extensions and structural work • Plumbing, kitchen,electrical, and roofing services
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Latest review:
Bathroom Fitting- 8 Jan 2026
We couldn’t be happier with the bathroom and toilet refurbishment carried out by Sahir. From start to finish, the workmanship was outstanding and the attention to detail really shows in the final result. The spaces have been completely transformed and finished to a very high standard. Sahir was professional, reliable, and respectful of our home throughout the project, always keeping the area clean and tidy. Communication was clear and honest, and everything was completed on time. We’re absolutely delighted with the results and would highly recommend them to anyone looking for high-quality refurbishment work. A truly excellent job!
MN CONTRACTORS LTD
No reviews yet
Extension Builder in Westminster
At MN Contractors, we provide expert building and home improvement services throughout Kensington and Chelsea and within a 10 miles radius. Our skilled team handles all aspects of property work, including extensions, loft conversions, carpentry, plasterboard and skimming, painting and decorating,wall paper removing and installation,bathroom fitting, plumbing, underfloor heating, tiling, electrical work and garden brickwork and fencing. We take pride in delivering high-quality workmanship, whether it’s a small repair, a full renovation, or a complete house extension. With a focus on reliability, clear communication, and fair pricing, we aim to make every project hassle-free for our customers. No job is too big or too small – we work on both domestic and commercial properties. We also offer free estimates and are fully insured, giving you complete peace of mind.
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Nicely Done Always
Rating: 5 out of 5
Extension Builder in Westminster
Our success is a your happiness. We strive on achieving high standard finishing to achieve high level of customer satisfaction. With us you can’t go wrong. From kitchen and bathroom renovation, to landscaping and gardening work we do it all. So lets get in on and make it happen.
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Latest review:
The guys from NDA have really have executed the works i wanted carried out on another level. The tiling in the bathroom is just lovely. The whole bathroom feels so different i still cannot believe it. Well above my expectations if im honest. Thanks guys. i will definitely be in touch on my next project.
chins design and build
No reviews yet
Extension Builder in Westminster
We undertake all manner of building and renovation work, having worked on a vast variety of jobs a professional, seamless and multi-trade service, for all domestic projects from , extensions, renovation, refurbishment and to fully finished houses, all tailored to meet our clients’ specific requirements. professional construction company covering South London and Greater South London.
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Zamir Merko
Rating: 5 out of 5
Extension Builder in Westminster
Hello my name is Zamir, I have over 20 years experience in the building trade. When I complete a job I like to leave the customer very happy.
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Latest review:
I was very happy with the finished job He was very good and made sure that it was done properly. He came in 1 day to quote me and started the next day and finnished in 2 days
E-H-E Vision construction
No reviews yet
Extension Builder in Westminster
EHE Vision LTD
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Shakers Studio; Art & Interior Design Company Ltd
No reviews yet
Extension Builder in Westminster
With 30 years of experience in the industry, Shakers Design is ready to deliver exceptional interior design and refurbishment solutions. From conceptualization to completion, we handle every aspect of your project, ensuring a seamless and stress-free experience. We provide services such as interior design, planning permission and building regulations approval, total and partial refurbishment, renovation, loft conversions and extension, change of use residential and commercial design, construction. Why not take a look at our portfolio photos and contact us today for a free consultation to discuss your project.
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R&E Landscaping LTD
Rating: 4.7 out of 5
Extension Builder in Westminster
Hello! I'm excited to connect with you and help you with your needs. I am dedicated to providing exceptional service and support, whether you're seeking advice, information, or assistance with a project. With a focus on understanding your goals and delivering tailored solutions, I aim to make your experience as smooth and enjoyable as possible. At R&E Landscaping LTD, we specialize in providing comprehensive services for home extensions, transforming your living space to meet your unique needs and aspirations. Our expertise covers every stage of the extension process, ensuring a seamless experience from start to finish. Our Services Include: **Design and Planning** **Construction Management** **Foundation and Structural Work** **Roofing and Insulation** **Interior Finishing** **Utilities Installation** **Landscaping and Exterior Work** **Ongoing Support and Maintenance** Whether you're looking to add a new room, expand your kitchen, or create a home office, we’re here to help make your dream extension a reality. Contact us today to discuss your project, and let’s turn your vision into a beautiful new space!
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Latest review:
Landscaping- 26 Jul 2026
AVOID. What was quoted as a simple 12-day project turned into a multi-month ordeal requiring constant chasing, while he pressured me to pay 80% upfront for barely 20% of the work completed. Unreliable: - Never stuck to agreed schedules; showed up at random times for a few hours or not at all. - Left materials dumped on the public pavement and communal garden, causing a nuisance. - Required me to personally manage and receive material deliveries. - Left pile-ups of rubbish in communal areas, which he only cleaned up after I refused to release final payment until it was cleared. Substandard work: - fence slats were noticeably warped from Day 1. - tiles thinner than specified in the original quote. - agreed raised flower bed never built. - custom built-in storage unit leaks, interior completely rotten and covered in mold just weeks after completion. - he made false promises that he would come back to inspect and fix his defective work to completely disappear
Johny's Brickwork Ltd
Rating: 4.9 out of 5
Extension Builder in Westminster
I have 7 years experience as a bricklayer and i ve done garden wallls, extensions, garages.
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Latest review:
Extensions- 6 Nov 2023
I hired John to do my Outbuilding Shell only. The work included demolishing existing structure, foundations, Block and Beam, EPDM roofing, Cavity Block works and Soakway. All aforesaid works were carried to highest standards and I am very pleased with works. John is friendly, reliable and trustworthy. I would use his services again and recommend him to others.
Plumber
No reviews yet
Extension Builder in Westminster
Hi my name is Gledis. I am a plumber, also I am very good at landscaping, flooring, extensions, bathroom fitting, painting and gardening. I have a lot of experience on the construction industry, also I do a bit of carpentry (installing doors, partitions etc) I am always on time, very good at communicating and understanding whats the budget of the costumer and knowing what they want.
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Bricklayer
Rating: 5 out of 5
Extension Builder in Westminster
Small bricklayers gang ready for work : Face brickwork,Block work,Garden wall's any design you like. Pointing weather struck,flash. Old stock brickwork,New build brick work, Extensions.
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Latest review:
Extensions- 1 May 2024
Vaidas and team were great. Got here early and worked solid until late. Built a 5x4m extension and done a great job. Looks good and has been approved by building control. Highly recommend.
Shiv Builders
Rating: 5 out of 5
Extension Builder in Westminster
Shiv Builders .We are professional .All aspects of building work. no matter its small or big job we take all kind of works Over 5 years of experience! -roofing ( new, repairs, replaces, alteration, gutter repair ) - plumbing, heating,new boiler, radiators, ventilation, drain repair - electrical ( new installation-certificate, fault finding, fuseboard ) -Extension - carpentry - bathrooms ( new, tiles repair) - kitchens (design/fitting/supplying) - damp problem - tiling - painting - and many more We try to advise clients in solving problems related to construction and avoiding them in the future. We do not do so-called quick works. We carry out all the work properly and reliably.
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Latest review:
Tiling- 25 Jul 2025
Shiv builders did the tiling for my bathroom. The quote was easy and done via a WhatsApp video. Price was reasonable. The job turned out to be more challenging than we first thought with uneven walls and floorboards were quite worn however they found solutions easily. The team arrived on time and did an excellent job. Always left the place tidy and very polite and professional. I then had a few additional jobs round the house such as changing door handles and fitting light pendants which they happily accommodated and again did a good job. Will definitely be using them for future work.

4.2

Top rated Extension Builders

Our Extension Builders in Westminster, are rated 4.2 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 Westminster?

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

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

What are the hourly rates of extension builders in Westminster?

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

Find extension builders in Westminster with MyBuilder

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

Step 2: Compare different extension builders in Westminster

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

Step 3: Hire Westminster extension builders with confidence

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

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

What to ask a Westminster extension builder before hiring?

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

An extension builder in Westminster 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 Westminster 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 Westminster?

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 Westminster 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 Westminster 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 Westminster

Can an extension builder in Westminster help with planning permission?

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

Many Westminster 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 Westminster help with materials and finishes?

Yes, most extension builders in Westminster 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.