Extension builders in Swiss Cottage

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.4 (19 reviews)

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Some of our top rated extension builders in Swiss Cottage

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Home Design & Build
Rating: 5 out of 5
Extension Builder in Swiss Cottage
Tooled with years of experience, we undertake design & reconfiguration of builds; adding value to your home or business. Working closely with you; we create a bespoke, quality finish within your budget & affordability. Delivering a high standard of skill & integrity of craftsmanship we are proud off
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Latest review:
Kitchen Fitting- 24 Jun 2025
Lalli and her team were all very professional, communicative, and detail oriented helping us create a new kitchen and bathroom that we love, not to mention, on schedule! We would highly recommend Home Design and Build and hope to work with then again in the future.
Araron construction London Ltd
Rating: 4.7 out of 5
Extension Builder in Swiss Cottage
Aaron Construction London Ltd is an established building and construction company with 25 years of experience delivering high-quality building, renovation and property maintenance projects across London. We are fully insured and VAT registered, providing our customers with a professional, reliable and trustworthy service from the initial quotation through to completion. Our experienced team can assist with projects of all sizes, from smaller repairs and maintenance works to complete renovations and major building projects. We take pride in delivering high standards of workmanship, attention to detail and excellent customer service. Our Services Include: * General building and property renovations * Roofing, flat roofing and roof repairs * Leadwork, slating and tiling * Gutters, fascias and downpipes * Brickwork, repointing and structural repairs * Damp, mould and water-damage repairs * Bathrooms and kitchens * Plastering, rendering and decorating * Doors and windows * Drainage and external works * Extensions and refurbishment projects * Property maintenance and repairs We believe in clear communication, honest quotations and dependable workmanship.
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Latest review:
Handyman- 17 Oct 2026
Aaron was amazing. He gave options and prices. He put up my broken curtain track really quickly. Very professional, kind and considerate. Highly recommended. Very happy customer. Thank you Aaron
Garey Limited
Rating: 5 out of 5
Extension Builder in Swiss Cottage
General building
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Latest review:
Very reliable and high quality of work.
Teimourazi Bachsoliani
Rating: 5 out of 5
Extension Builder in Swiss Cottage
Hi, my name is Temo. Our team has combined experience of more than 20 years and we have an excellent reputation, for high quality work, tidy finish and friendly service. My team does all types of jobs including extension, loft conversion, full refurbishment. We always deliver best quality job for a reasonable price.
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Latest review:
Extensions- 16 Oct 2026
Temo, George and the guys did a great job with our wraparound extension. Always very polite, very good at managing our neighbours and building control and responsive to questions and concerns.
D&C Building
Rating: 5 out of 5
Extension Builder in Swiss Cottage
Top quality, reliable team and always in time !
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Latest review:
Fencing- 9 May 2022
Very nice and polite guy. He did his job as promised. The price was fixed and job was done neatly. He tidied away all the rubbish and out back everything in order which I was very pleased with. The communication was great and everything went very well. We enjoy our garden more than before now.
rfi builders ltd
Rating: 5 out of 5
Extension Builder in Swiss Cottage
Hi! My name is Rifat, I’m the proud owner of RFI builders. I have 30+ years experience in the construction industry having done jobs in, brick laying, plastering, flooring, painting, loft conversions, extensions and many more!
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Latest review:
Plastering- 4 Oct 2024
Mr Rifat did an excellent job for plastering rooms and i would recommend him to everyone highly. The work he has done is to a very high standard and completed in 3 days. His quote was very helpful and comprehensive and he was helpful and very kind and calm. He did not take a break from doing the work, even though i told him to take a seat for 5-10 minutes. He is a very hardworking person. I think anyone to catch him to do a job for themselves is very lucky. I recommend him to everyone because he knows how to do good job.
Remas Construction
Rating: 5 out of 5
Extension Builder in Swiss Cottage
I been in construction field for over 16 years: (Electric, Plumbing, Plasterboard, Painting, Flooring, Carpentry, GlassWork, Kitchen & Bathroom, Extension and much more..) I believe that quality is the result of careful planning and execution. Daily maintenance solutions.. (Urgent & Same day Service). Best price in London, Guarantee 💯 GENERAL CONTRACTOR'S Commercial & Residential Home inspection
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Latest review:
Ahmad did an exceptionally good job. He painted a large number of walls, filled them, gave me a recommendation as to what paint should be used and left everything clean and tidy every day. Highly recommended.
Ev max pro
Rating: 4.7 out of 5
Extension Builder in Swiss Cottage
Reliable. Skilled. Trustworthy. *Qualified Electrician *kitchen fitter *Bathroom fitter *All General Repair *Extension and Pergola I take pride in delivering clean, precise, and high-quality work — on time, every time. Your home’s needs are in good hands. Whether it’s repairs, maintenance, or improvements, I’ve got the skills and dedication to handle it all. You don’t need to worry — just leave it to me. While you focus on your daily life, I’ll make sure everything at home runs smoothly. Trust me to get the job done right, with care and attention to every detail.
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Latest review:
Handyman- 18 Feb 2026
Excellent very amenable
AEE Construction Ltd
Rating: 5 out of 5
Extension Builder in Swiss Cottage
General renovations, electric, plumbing, decoration, painting, kitchen fittings, tiling, flooring, bathrooms, extensions, loft conversions and property maintenance
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Latest review:
Handyman- 27 Jul 2023
Very professional and polite man. Job done neat and professionally. Would highly recommend.
Yida Design and Construction Ltd
Rating: 5 out of 5
Extension Builder in Swiss Cottage
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.
Ebla contractors Ltd
Rating: 3.7 out of 5
Extension Builder in Swiss Cottage
Ebla contractors, I am a Chartered Approved Safe Contractor, I have been working in the building trade for over 20 years, I can undertake any job, from Foundations all the way up to the Roof, and anything in between, I can provide any references and I have insurance of £5 million, my work is second to none, and the proof of that is you don't pay anything upfront, till you are fully satisfied with the quality of work.
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Latest review:
Extensions- 29 Sep 2026
I instructed ELBA (managed by Ramon) for a full property refurbishment commencing in August 2025. The sub-contracted team led by Ali abandoned the project two months past the agreed deadline, leaving the property unfinished—specifically the kitchen and bathroom. Over a three-week period, more than 40 calls and messages went unanswered. Ultimately, I had to retain and fund another contractor to bring the property to a habitable state. Three months post-completion, a wall leak emerged in the neighboring property—an issue that had never occurred prior to this refurbishment. My attempts to report this to Ramon in January 2026 were met with total avoidance. the leak recurred on September 22nd. Once again, all attempts to engage with Ramon have been ignored. I retain complete timestamped correspondence, and progress photographs.Having exhausted all standard avenues of resolution, I am currently formalizing the evidence dossier to initiate legal proceedings against ELBA and Ramon.
Property DMR Services Ltd
Rating: 5 out of 5
Extension Builder in Swiss Cottage
Property DMR Services Ltd is a high end building company that specialises in refurbishing high end properties in and around London. All our work is insured & guaranteed. We undertake Basement Construction & Waterproofing, Extensions, Loft Conversions & Renovation, Decorating and wallpapering plus Bespoke Joinery & Shop Fitting
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Latest review:
Restoration & Refurbishment- 12 Sep 2024
From the first impression, throughout the early stage discussions and right up to the end - Matthew was consistently punctual, fair, thorough and reliable. Excellent execution of jobs and flat was left tidier than before. Would not hesitate in hiring him again or recommending.
DS Developments
Rating: 5 out of 5
Extension Builder in Swiss Cottage
My business is offering service in all the aspects of renovation, refurbishment and building work. My team is very reliable and respectful of our client's property. We work hard to make sure that all the work carried out is to the highest standards.
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Latest review:
Garden Maintenance- 17 Sep 2017
I hired DS Developments to completely landscape my small front garden. This involved clearing and levelling the area; moving and re-securing a bike shed; laying a patio and lawn; and a number of finishing touches. The area went from somewhat of an embarrassing eye-sore to an area of pride. One that several neighbours have already made compliments about. David provided a professional service from start to finish. His quote was more than I expected, but his knowledge and vision gave me the confidence to select his services. He provided a selection of options and stuck to budget; adapted well to new ideas/suggestions; and informed in advance where the cost would be impacted. He and his team also were as tidy and considerate as possible and I highly recommend their services.
AKN BUILDING LIMITED
Rating: 5 out of 5
Extension Builder in Swiss Cottage
AKN building limited
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Latest review:
Kitchen Fitting- 30 Aug 2025
I didn't hire as the dates didn't align but it was a good and professional first meeting
Wader construction
Rating: 5 out of 5
Extension Builder in Swiss Cottage
Over 30 years of professional bricklaying experience, I specialise in all aspects of brickwork, blockwork, stonework, brick slips, repointing, repairs, extensions, garden walls, fences, RC frame masonry, masonry support systems, paving and slab laying, and general masonry construction. I take pride in delivering high-quality craftsmanship, attention to detail, and reliable service on every project. Whether working on residential, commercial, or heritage developments, I am committed to achieving exceptional results and ensuring complete customer satisfaction. Services Include: Brickwork & Blockwork Stonework & Brick Slips Repointing & Repairs Extensions & New Builds Garden Walls & Boundary Walls External wall insulation system Silicone and acrylic render. RC Frame Masonry Masonry Support Systems Paving & Slab Laying General masonry works. Refurbishments
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Latest review:
Insulation- 6 Oct 2026
Absolutely fantastic, I cannot recommend this company enough, really top quality work, friendly and professional and went above and beyond to finish the job to a extremely high standard, I personally will recommend them to friends and neighbours. They boarded up some eaves storage for me, it had tricky small access but this didn’t put them off, and I’m so pleased with the results. Great communication and clean and tidy on the day. Darius was fantastic.
OBE BUILDING LTD
Rating: 5 out of 5
Extension Builder in Swiss Cottage
At OBE Building Ltd we are building a reputation by providing our clients with the very best of our services,efforts and expertise.We have very good working ethic and a well balanced mutual interest.With our set up we always deliver satisfaction to both clients and ourselves the builder.So please do feel free to hire us and give us your trust. Thank you.
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Latest review:
Extensions- 25 Jul 2023
Vini and his amazing team became part of our family for the months they were working on our house! Attention to detail and great communication was a top priority for me before starting our large scale renovation, and they delivered above and beyond on every front. Vini’s team helped transform my vision into a reality - they weren’t thrown or intimidated by any of my crazy/creative ideas, and were equally ready to advise and bring constructive ideas of their own to the table, based on their years of experience. We would highly recommend Olaj Brothers as trustworthy, professional and highly skilled tradesmen.

4.4

Top rated Extension Builders

Our Extension Builders in Swiss Cottage, are rated 4.4 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.