Extension Builders in The City

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.1 (17 reviews)

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Some of our top rated extension builders in The City

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Musawir Architecture Limited
Rating: 5 out of 5
Extension Builder in The City
We are fully qualified & established architectural design team, with high success rates in obtaining residential and commercial planning approval. A multi-disciplinary consultancy with 10 years combined experience. We provide services for all projects, new builds, extensions, conversion along with commercial projects and change of use. Musawir Architecture retains our competitive edge having exceptional approval rates for planning & building regulations submissions and offer outstanding quality.
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Latest review:
Extensions- 5 Feb 2021
Abul was very professional and went through our extension plans thoroughly, making sure he understood exactly what it was we were after and made some suggestions himself. He has been very easy to contact with any queries, a great service.
"Surudo" Building & Decorating
Rating: 5 out of 5
Extension Builder in The City
We are team of experienced builders provides professional execution of small, medium and larger projects, all types of refurbishment, maintenance and building services for private and business customers in London and surrounding areas. All of our work is carried to the highest standards.
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Latest review:
Bathroom Fitting- 3 Sep 2020
He is very professional and has done a good job on refurbishing my bathroom.
N EXTENSION KINGS LTD
Rating: 5 out of 5
Extension Builder in The City
I've been working in building trade for over 15 years , we can undertake any job small and big from foundations to the roof and anything between. We can provide any references,Me and my team take pride at what we do and we do it first time right .our work is second to none , and proof of that is that you don’t pay anything upfront till you are fully satisfied with the quality.
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Latest review:
Great job by Nick and the team, good attention to detail and very helpful, they went the extra mile to get a nice finish and make sure we were happy. We used after a neighbour also had a good experience.
Fussion Contracts
Rating: 5 out of 5
Extension Builder in The City
Hello, I’m a carpenter with 6 years experience who specialises in small odd jobs and refurbishments . Have a small crew and subcontractors availible on requests or if needed for the job. Fully insured and with trackable references.
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Latest review:
Carpentry- 7 May 2018
Good guys, committed to making sure the job is done right and to high standard. Many thanks
Reliance utilities
Rating: 4.5 out of 5
Extension Builder in The City
Hello my name is Robbie, I am a qualified plumber and heating engineer, that’s also trained in electrics. I enjoy working out problems and helping customers come to the best resolution to their problems.
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Latest review:
Kitchen Fitting- 18 Aug 2026
Excellent job done by Robbie and his mate. Replaced the kitchen unit and did a couple of other jobs around the flat all in one afternoon. Great attention to detail and reasonable price. Would definitely use Reliance again. Thanks from Anne and Peter in Roehampton
LeBirch projects ltd
Rating: 4.8 out of 5
Extension Builder in The City
New Build We specialise in property extensions, Loft conversions, Renovations & Complete new builds. carpentry, Interior design & garden landscaping. Decorating All our apartment and house decorating work is done with our four key policies firmly adhered to: Quality – Reliability – Friendliness – Tidiness. General Plumbing Our expert plumbers provide kitchen and general plumbing services. Specialists in bathroom designs and installations, shower rooms and sanitary upgrades.
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Latest review:
Ilias and his team were really great. They took out an old kitchen and installed the new one, plus installed a new toilet and sink, and did extra electrical work. They were very friendly, quick and efficient, tidy - I couldn't have asked for better!
KML BUILDING (UK) ltd
Rating: 4.5 out of 5
Extension Builder in The City
KML is a Central London-based building company with a strong reputation for quality, reliability, and attention to detail. We specialise in home extensions, refurbishments, HMO conversions, and general building works — providing tailored solutions for both residential and commercial clients. As a small, hands-on team, we offer a personal service from start to finish, ensuring every project meets the highest standards of craftsmanship and compliance.
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Latest review:
Bathroom Fitting- 13 Oct 2025
Camilo was supposed to meet me today to give me a quote. He missed our appointment without any notification. I am not here to chase people to do their job. The job will be advertised again, as he was not hired.
Em
Rating: 5 out of 5
Extension Builder in The City
Hey I’m Emrah professional builder for 6 years but my experience date way back. I do mostly refurbishments and maintenance. You can see some of my work below
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Latest review:
Conversions - General- 4 May 2025
I Hired Em to do my ground floor reno, which included a garage conversion and remodel of my kitchen where 2 internal walls were removed. Very glad I found Em to do the job. Him and his team was efficient, friendly, tidy and hard working. We encountered obstacles along the process (which is normal for any renovation) but Em gave his opinion, listened and we came to the best solutions. Very happy with the result. Em is a reliable, punctual, knowledgeable, fair, down to earth guy and one of the best if not the best contractor I have hired. Highly recommend. Some before and after pictures.
REWORKS LONDON LTD
Rating: 5 out of 5
Extension Builder in The City
Our team comprises eager on-demand workers, with years of experiences, who deliver exceptional services to both residential and commercial customers all around London. Whether you need a painter that will not miss a single mark, or an electrician that assists you in emergencies, we will make sure to send you our specialized and competent workers for all your needs.
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Latest review:
Gas Work- 11 Dec 2020
Repaired and very happy!
Yida Design and Construction Ltd
Rating: 5 out of 5
Extension Builder in The City
Yida Construction is a limited company based in Central London. We are a very reliable and professional team of tradesmen with over 10 years of experience in the building industry, committed to delivering the highest levels of quality and service to our clients.
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Latest review:
Restoration & Refurbishment- 26 Jun 2022
Tommy was a wonderful perfectionist and has done beautiful work in our stairway and hallway which had needed refurbishment for a very long time. It feels brand new. The flooring is perfect both in the hall and staircase, and the walls are now perfectly smooth and painted immaculately. Friendly and accommodating, we will be hiring again for more jobs in the future, undoubtedly. Thank you.
Statecraft Building Ltd.
Rating: 5 out of 5
Extension Builder in The City
We strive to provide the best building services posible within and outside London. Our company has been built on continuous recommendation, repeat custom and quality workmanship. We offer full building services and you can be sure we`ll take care of the job.
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Latest review:
Milen, initially came as I had a leak in my ensuit where the tiles had lost their grout. He was very honest in giving me advice, and regrouted at a very reasonable price. He then came a month later to remove the tiles in the shower and replace the plaster protection board, then retiled. He purchased all the products and gave me advice on the most valuable sustainable tiles. The work was carried out a to very high level, I would most definitely hire Milen in the future, and highly recommend him.
Mansa Construction & Maintenance Limited
Rating: 5 out of 5
Extension Builder in The City
Building Tomorrow, Today. Mansa Construction is your partner in shaping the future landscape. With meticulous planning, innovative solutions, and unwavering dedication, we transform blueprints into reality, delivering projects that stand as testaments to our commitment to excellence. From groundworks to completion, we build with foresight, ensuring that every structure not only meets but exceeds expectations, today and for generations to come. We specialise in refurbishments, renovations, and maintenance services across both commercial and residential sectors. Whether transforming existing spaces or preserving their longevity, we bring the same precision, care, and innovation to every detail. Led by a two-man team with over 30 years of combined experience, choose us to experience construction redefined, where every detail matters and excellence is standard.
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Latest review:
Handyman- 1 Aug 2025
Very professional, will use again, highly recommended
Good Choice Builders LTD
Rating: 5 out of 5
Extension Builder in The City
We are the building company that specialized in Loft Conversions, Extensions and Refurbishments. By this moment we worked as a subcontractors, now we have all neccessary and feel free to participate to the tenders, prepare the informative and detailed contracts and estimations, management.
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Latest review:
Extensions- 8 Jul 2019
A very efficient builder who did the plans which where passed first time when we needed help he found someone to help very clean and tidy and on time
LDN Construction
Rating: 4.6 out of 5
Extension Builder in The City
With over 20 years of experience, we specialise in loft conversions, roofing, extensions and more. We primarily operate in Greater London, Our team possesses diverse skills and knowledge, ensuring top-quality results. We take pride in delivering exceptional customer service, professional workmanship, and thorough aftercare. Choose us for your next project and experience the best in the business.
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Latest review:
Bathroom Fitting- 28 Nov 2024
in my place, everything looks fine. but they used long screws penetrated the downstairs pipeline, which made my life very hard, intense relationship with neighbors, neighbors tries to break in. and this problem is still going on. i don't know how to fix it.
VM Renovations Ltd
Rating: 5 out of 5
Extension Builder in The City
VM Renovations was founded on the principle of making beautiful homes and commercial spaces available on any budget. We proudly guarantee a combination of technical excellence and expert craftsmanship on every site, from start to finish – ensuring our clients’ needs are met and their dreams for their space are realised. Officially opening our doors in 2022, VM Renovations has a team with a strong background in the London construction industry, site and project management, as well as a strong roster of London-based contractors that make top-notch quality their priority. We love working with clients in southeast London to create one-of-a-kind, elevated spaces that are unique to them
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Latest review:
Brilliant, contentious team who went over and above to make sure we were satisfied with the work. This included thorough communication, professionally managed timeline and procurement and high quality standard of build. Mauro worked with us to deliver our dream solution within a tight budget. Would highly recommend.
fedora and sons
Rating: 4.4 out of 5
Extension Builder in The City
I have started working for myself in Europe for 10 years, came over to England with my family and have been working here for 11 years getting business from word of mouth. In my business I manage lots of sub contractors covering a wide range of trades which I have experience in too.
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Latest review:
Painting & Decorating- 24 Feb 2020
Quite literally the worst tradesman I have ever worked within 25 years as a property developer! He came and quoted to paint my house (a good price I must say), little did I know that this meant he would spray everything that he can see, not prepare the surfaces by sanding them down or protects things. This included door handles, hinges, radiators, alarms sensors, tiles and my own furniture and cooking utensils. First time I confronted him about this he said that we would clean everything, and we agreed to carry own. However, it became apparent that we was doing the same as previously discussed. have paid hi 66% of what was agreed, I quickly realised that the damaged he has caused was going to cost me far more and I told him to leave. The next day he turned up at my house with his wife demanding the balance which I refused to give him, they were both shouting outside my house, threatening to call the police. I eventually agreed to pay the 50% of what was left, just so that they would leave. However, even once he had confirmed writing his acceptance of this, he walks over to me and threatened me one final time, saying that he will take me to court etc, there is god and he will see to me! I advise to stay away from this person, better to pay a little more and work with professionals who don't agree with one thing and do another. He paints using a spray, which means you can not touch anything up and he quite literally paints everything he sees!!

4.1

Top rated Extension Builders

Our Extension Builders in The City, are rated 4.1 out of 5 based on 17 reviews from customers like you.

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What types of services are offered by local extension builders in The City?

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 The City 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 The City who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in The City?

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

Find extension builders in The City with MyBuilder

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

Step 2: Compare different extension builders in The City

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

Step 3: Hire The City extension builders with confidence

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

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

What to ask a The City extension builder before hiring?

Before hiring an extension builder in The City or extension building company in The City, 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 The City?

An extension builder in The City 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 The City 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 The City?

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 The City 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 The City 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 The City

Can an extension builder in The City help with planning permission?

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

Many The City 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 The City help with materials and finishes?

Yes, most extension builders in The City 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.