Extension Builders in Swiss Cottage

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

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Some of our top rated extension builders in Swiss Cottage

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PMC Developments
No reviews yet
Extension Builder in Swiss Cottage
Carpenter from Ireland living and working in London since 2012
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HARMANRAJ CONSTRUCTION
Rating: 4.9 out of 5
Extension Builder in Swiss Cottage
Business Name: Harman Raj Constructions Ltd About Us: At Harman Raj Constructions Ltd, we bring 7 years of experience in roofing, building extensions, plastering, driveways, and fencing. We take pride in delivering high-quality craftsmanship for every project, whether big or small. Why Choose Us? • Expertise You Can Trust: Our 7 years in the construction industry mean we have the skills to handle a wide range of projects. • Customer-Focused: Your satisfaction drives everything we do. We work closely with you to ensure the final result matches your vision. • Specialized Skills: From roofing and extensions to plastering and fencing, our expertise ensures excellent results. • Quality & Reliability: We deliver on time, within budget, and without compromising on quality. Services We Offer: • Roofing installation, repairs, and maintenance • Building extensions and renovations • Expert plastering • Driveway construction • Fencing installation and repair Contact us today for a free quote and let us bring your construction ideas to life!
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Latest review:
Plastering- 11 Apr 2026
Absolutely thrilled with the work carried out by Harman. The skimming has been completed to an exceptionally high standard - the finish is incredibly smooth and completely seamless. Harman and his colleague were professional throughout: tidy, courteous, and very polite. They took great care to properly protect and cover the surrounding areas, leaving everything clean and intact once the job was done. What really stood out is their attention to detail and commitment to getting everything perfect - even offering to return for any final finishing touches if needed. I honestly couldn’t recommend them highly enough. Brilliant job from start to finish.
swift conversions ltd
Rating: 5 out of 5
Extension Builder in Swiss Cottage
In Swift Conversions we have a mission, which is to provide the residents of Greater London with no hassle building services where all work exceeds expectations, meets deadlines and offers excellent value for money and we work very closely with our client to ensure complete customer satisfaction. We have many satisfied and returning customers because we provide the best and most comprehensive building services in and around Greater London. We pride ourselves on offering turn key projects including all permissions, certificates, planning, structure drawings and calculations. If you are looking for experienced and friendly building company you can trust then look no further than SWIFT CONVERSIONS. Whether its a query or a quote, shortlist us here and we will be in touch very shortly as soon as we have your contact details.
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Latest review:
We have worked with Alex and his team at Swift Conversions Ltd twice now—first for a house extension and then for a loft conversion and general refurbishment —and we wouldn’t hesitate to choose them again for our next project. From the moment we received the quote to the final completion, Alex was incredibly communicative, reliable, and always had a can-do attitude. Despite the challenges of fluctuating prices in the market, he delivered the project within budget and stayed true to his word. His professionalism and trustworthiness are second to none. If you’re looking for a builder you can rely on 100%, Alex is the one to go to. Highly recommended!
RSL Renovation Ltd
No reviews yet
Extension Builder in Swiss Cottage
We are a trusted and experienced general contracting company, delivering high-quality craftsmanship across all areas of construction, extensions, alterations, and refurbishments. With a commitment to excellence and attention to detail, we bring your vision to life— on time and within budget. Our Services Include: • General Building – Full refurbishments and renovations tailored to your needs • Extensions & Loft Conversions – Expertly designed to enhance space and value • Bathroom & Kitchen Installations – Stylish, functional, and built to last • Floor & Wall Tiling – Precision tiling for a flawless finish • Carpentry & Joinery – Custom woodwork and structural solutions • Plumbing & Electrical Work – Safe, certified, and up to code • Interior & Exterior Decorating – Transforming spaces inside and out • Garden Landscaping, Fencing & Paving – Creating beautiful and practical outdoor areas • Maintenance Services – Reliable upkeep for homes and businesses Whether it’s a complete renovation or a small upgrade, we approach every project with professionalism and pride.
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Braerise UK Ltd
Rating: 5 out of 5
Extension Builder in Swiss Cottage
.......P L E A S E....... shortlist after reading my initial message accompanying your advert, and 100% happy with its content. I am building contractor undertaking various home improvement projects including bathrooms and kitchens design and installation, extensions and loft conversions, decorating and maintenance, electrical and central heating works. The experience in the trade goes back to 1998.
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Latest review:
Handyman- 13 Sep 2024
Clean, punctual and wow what an excellent finish. He really takes pride in his work, I would definitely recommend. A++
Dominik Dudziak
No reviews yet
Extension Builder in Swiss Cottage
I am a skilled builder with many years of experience. If you are looking for someone to plaster your kitchen, bathroom, or other room, please do not hesitate to contact me. I am happy to help.
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Cekamaintenance ltd
Rating: 5 out of 5
Extension Builder in Swiss Cottage
With over 20 years in carpentry, plumbing, kitchen and bathroom fittings, and general building maintenance work.
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Latest review:
Carpentry- 2 Aug 2025
Excellent service from start to finish, tradesman as they should be!
Ionut
Rating: 5 out of 5
Extension Builder in Swiss Cottage
Hello, I'm Ionut handyman, I also do tile and floor work, as well as paving and driveway work.
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Latest review:
Landscaping- 7 May 2026
“We recently had our landscaping redone along with new turf installation, and the results were excellent. The team was professional, punctual, and paid great attention to detail from start to finish. They completely transformed the garden, leaving everything neat, tidy, and looking amazing. The new turf was laid perfectly and has already made such a difference to the overall appearance of the space. Communication throughout the project was clear and friendly, and the workmanship was top quality. Highly recommend to anyone looking for reliable and skilled landscapers.”
A lama construction ltd
Rating: 5 out of 5
Extension Builder in Swiss Cottage
Drylining and plastering , making good , building wall , mf ceiling , plasterboards , rendering, painting.
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Latest review:
Carpentry- 9 Oct 2022
Excellent work; came exactly on time and went above and beyond. Job a little more involved than I’d realised but no complaints from Alfred he purely got on with the task at hand and I was incredibly happy with the work and would highly recommend.
Valentin
Rating: 5 out of 5
Extension Builder in Swiss Cottage
Extension, plastering, tiling, flooring, plumbing, electric.....General contractor
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Latest review:
Bathroom Fitting- 1 Jun 2024
Valentin is a very professional and well experienced plumber and electrician. Hi did amazing job.Changed the bath and the panels in one day!
ASM builders services limited
No reviews yet
Extension Builder in Swiss Cottage
Builders coordinate and work on the construction, repair, and renovation of homes and other buildings. They can also manage complete projects: painting, decorative painting, bathroom installation and removal, kitchen door floors, shelving, removing old, installing new fixtures, and repairs as desired by the customer. ASM builders adhere to safety rules ASM has experience in building quality and workmanship to satisfy the customer, and its prices are suitable for all
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fta haliti ltd
Rating: 5 out of 5
Extension Builder in Swiss Cottage
FTA construction is a family run company that specialises in, Design and build projects inc, extensions, loft conversions, interior and exterior inc plumbing and electrician
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Latest review:
Driveways (Paved & Loose)- 1 Jun 2019
That’s was lovely job from ur company,well done guys ,highly recommended your company,very professional and tidy.Very happy with your company
Louis Dowling
Rating: 5 out of 5
Extension Builder in Swiss Cottage
I take pride and joy in any job I am doing, always take extra time to make sure the customer is totally satisfied and understanding, there is no job to big or too small so please don’t hesitate to get in touch - I range from groundwork’s such as installing drainage or digging footings to building extensions or garden walls/piers, also specialise in repointing. I also do a lot of landscaping work such as patios, driveways, fencing concrete shed bases etc… so please feel free to get in touch
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Latest review:
Landscaping- 10 Sep 2026
Louis made a difficult job very easy by sorting all the logistical problems of removing and disposing of an old patio and getting all the new stone and aggregate delivered where there was no easy access to the back garden. He worked continuous days until the job was done and finished in good time and on the budget we agreed, which was very reasonable. Louis did the job to the spec we wanted, including cutting mitre corners on narrow concrete edging, and was very clear when offering us different options, such as how to join the patio to the side passage. Everything was cleared up at the end, and the finished patio looks exactly as we had hoped it would. Louis was always polite and is a hard worker who takes an obvious pride in doing the job properly.
United build ltd
No reviews yet
Extension Builder in Swiss Cottage
We are a team of hardworking experts.With over 20 years in the trade, we have the skills to ensure Whether you want to extend your living space or remodel your kitchen, our diligent team will create your dream home. We work with great attention to detail and complete all projects on schedule and with in your budget do contact us to discuss your need and we look forward to working on your project
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Dara Builders & Electricians
Rating: 5 out of 5
Extension Builder in Swiss Cottage
Dara Builders Ltd are expert local builders based in Carshalton, South West London, specialising in house extensions, loft conversions, kitchen fitting, bathroom renovations, refurbishments, and structural alterations. We proudly serve Sutton, Wallington, Cheam, Wimbledon, Raynes Park, Purley, Banstead and nearby areas. With over 15 years’ experience and rated highly on Google Reviews, we deliver quality workmanship with trusted trades. As a Which? Trusted Trader, we offer clear communication and professional project management from start to finish. Contact Dara Builders Ltd today for reliable local building services.
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Latest review:
Hard Flooring- 30 Sep 2018
Dara Builders were fantastic I will definitely use them again. Very pleased to have found them. Great job and finish, gave helpful advise and suggestions, plus very tidy and considerate.
BL Carpentry
Rating: 5 out of 5
Extension Builder in Swiss Cottage
Hello! My and my team are working on all kind of construction projects trough London. We've got 15 years of experience and many happy and returning clients.
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Latest review:
Multiple fitting out works, eg fitted cupboards, kitchen fitting. Top notch. Knowledgeable, fair, prompt. Would enlist his help again.

4.1

Top rated Extension Builders

Our Extension Builders in Swiss Cottage, are rated 4.1 out of 5 based on 19 reviews from customers like you.

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What types of services are offered by local extension builders in Swiss Cottage?

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 Swiss Cottage 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 Swiss Cottage who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in Swiss Cottage?

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

Find extension builders in Swiss Cottage with MyBuilder

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

Step 2: Compare different extension builders in Swiss Cottage

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

Step 3: Hire Swiss Cottage extension builders with confidence

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

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

What to ask a Swiss Cottage extension builder before hiring?

Before hiring an extension builder in Swiss Cottage or extension building company in Swiss Cottage, 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 Swiss Cottage?

An extension builder in Swiss Cottage 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 Swiss Cottage 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 Swiss Cottage?

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 Swiss Cottage 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 Swiss Cottage 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 Swiss Cottage

Can an extension builder in Swiss Cottage help with planning permission?

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

Many Swiss Cottage 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 Swiss Cottage help with materials and finishes?

Yes, most extension builders in Swiss Cottage 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.