Extension builders in Swiss Cottage

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

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

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 Swiss Cottage

3752 Results

Sort by:

City Building and Roofing Ltd
Rating: 4.9 out of 5
Extension Builder in Swiss Cottage
City Building and Roofing Ltd provides professional roofing, refurbishment and building services across London and Surrey. Our services include roof repairs, new roofs, flat roofing, GRP roofing, roof refurbishment, guttering, fascias and soffits, chimney work, damp proofing, brickwork and full property refurbishment. We work with homeowners, landlords and commercial clients, delivering reliable workmanship, honest advice and free no obligation quotes.
Get in touch
Latest review:
Damp Proofing- 26 Mar 2022
Good,timely and clean workers. Worked hard and efficiently with clear explanations. Very satisfied with the finish.
Construction Bushi Ltd
Rating: 5 out of 5
Extension Builder in Swiss Cottage
Hi We are a construction company working all over London We are part of the federation of master builders The work we do is, -Loft conversion -Extension -Refurbishe -Decorating -paving -garden
Get in touch
Latest review:
Extensions- 25 Jan 2022
About halfway through the project now and I have only positive things to say about these guys. They are always on time and hard working, great communicators and pleasant to deal with. The work has been top notch and their quotations have been very fair. I have great confidence things will turn out exceeding my expectations. Will update upon completion.
P.S. Building Projects Ltd
Rating: 5 out of 5
Extension Builder in Swiss Cottage
"WE ARE A HOME EXTENSION AND LOFT CONVERSION SPECIALIST. WE ALSO OFFER A COMPLETE BUILDING SERVICE! A family-run business, Quick growing building company with more than 20 yrs building experience. And we’ve been providing the highest quality work for our customers ever since. Everyone here at P.S.Building Projects Ltd is dedicated to meeting your specific requirements, delivering bespoke work on budget and on time. Which means you’ll enjoy peace of mind from start to finish."
Get in touch
Latest review:
Conversions - General- 11 Oct 2022
We've been seriously impressed with Pawel and his team. They opened up our rear dining room/kitchen wall using an RSJ, following our engineer's drawings perfectly. They also did a few bits of plumbing and bricked up one of the windows at the rear, which is where the new kitchen will be fitted. They were incredibly tidy and really pleasant and courteous to be around, which my wife was so grateful for given we live in a busy family house (most builders are not like this...), I can't thank them enough! We will definitely be using them again in the not-so-distant future!
Nami Construction Ltd
Rating: 5 out of 5
Extension Builder in Swiss Cottage
We offer comprehensive property refurbishment services that include decorating, plumbing, electrical work, plastering, extensions, and loft conversions. Our team comprises professionals, and we ensure that all instructions are regularly reviewed with our clients throughout the duration of the project. We provide transparent and detailed estimates and updates on a regular basis to help you control your budget. Our services cater to all types of homes, such as those owned by landlords, Thank you
Get in touch
Latest review:
Plumbing- 19 May 2026
Emir did a good job. The company did a bathroom refurbishment after water leak, repaired the damaged ceiling downstairs and painted the room. Emir’s attention to detail is very good and he went the extra mile to do the job properly. I will recommend his services.
Olgert Doko
Rating: 4.8 out of 5
Extension Builder in Swiss Cottage
My name is Olgert and my team and I are ready to give you a quote, on any building needs - painting, plastering, tiling, roofing, extensions and many other services. We are friendly, reliable and professional and we care about our work. Give us a call today for a free quote. We are located in North West London and we have more than 15 years experience in construction.
Get in touch
Latest review:
Tiling- 15 Sep 2021
Very professional and helpful from the beginning to the end. Great work, tiling was finished on time and to a great standard. Our new restaurant floor looks great and customers love the new look. Would definitely recommend and will use again. Thanks Team Doko
Abi Building Services
Rating: 5 out of 5
Extension Builder in Swiss Cottage
ABOUT ABS ABI BUILDING SERVICES ABS Abi Building Services is a trusted London-based building and renovation company specialising in high-quality residential construction and refurbishment projects. With a skilled and reliable team of experienced tradesmen, we deliver professional building solutions tailored to each client’s needs, budget, and vision. We work closely with homeowners, landlords, designers, and property developers to ensure every project is completed to a high standard with excellent attention to detail. At ABS, we focus heavily on: • Quality workmanship • Honest and clear communication • Reliability and professionalism • Clean and organised work environments • Strong client relationships • Delivering projects on time and within budget Our services include: • Full House & Flat Refurbishments • Extensions • Loft Conversions • Bathroom Renovations • Kitchen Installations • Structural Alterations • Plumbing & Heating • Electrical Works • Plastering & Rendering • Silicone Rendering Systems • Carpentry & Joinery • Flooring & Tiling • Painting & Decorating • Roofing & External Works • General Building Services Whether it’s a full property renovation or smaller improvement works, ABS Abi Building Services is committed to delivering a smooth, professional service and high-quality finish from start to completion. Based in London | Fully Insured | Residential Specialists Whttps://abibuildingservices.co.u
Get in touch
Latest review:
Bathroom Fitting- 7 May 2026
Very happy with the new bathroom. Florent removed the old one, disposed of the waste and installed a walking shower wet room, a new toilet, a new sink and a vanity unit. The work was professional and completed to a high standard in good time; the quote was reasonable and the communication was very good. Happy customer!
Loyalty Construction Ltd
Rating: 5 out of 5
Extension Builder in Swiss Cottage
New to this platform, but backed by over 20 years of construction experience. At Loyalty Construction, we combine extensive industry knowledge with quality workmanship, honest communication and reliable service. From refurbishments and renovations to general building works, every project is completed with care, professionalism and attention to detail. To introduce ourselves to the platform and give our first customers the opportunity to experience the quality of our work, we are offering 10% off to our first clients. We look forward to earning your trust, delivering excellent results and building a strong reputation through genuine customer reviews.
Get in touch
Latest review:
Rodrigo and team at Loyalty renovated our house, fixing lots of minor issues across the house from wear and tear. They were very flexible and did a great job across the whole house inside and outside. We have had lots of compliments since they did the work of how well the house is presented.
Samul Construction LTD
Rating: 5 out of 5
Extension Builder in Swiss Cottage
Estimate Prices From: * Loft Conversion £50k(labour+materials+scaffolding) * Home Extensions £3-4k per square metre * Basement £3-8k per square meter (labour+materials). * Bathroom refurbishment £8k (labour).
Get in touch
Latest review:
Demolition- 18 Oct 2011
Thank you very much - good job and good service. A real help!
UK Safety inspections
Rating: 4.6 out of 5
Extension Builder in Swiss Cottage
Full qualified electrician. Gas safety engineer. 18 years experience in London and England. Insurance £10 million. We do EICR, EIC , FIRE, EMERGENCY LIGHTS, PAT, LANDLORD GAS SAFE, HEAT PUMP CERTIFICATIONS.
Get in touch
Latest review:
Extensions- 7 Mar 2017
Very professional and personable service. Work done to a good standard
Yener Limited
Rating: 5 out of 5
Extension Builder in Swiss Cottage
Quality approved by Federation of Master Builders.Specialists at Extensions,Loft Conversions,Refurbishments and Garden Studios.We offer a design and build package with a skilled team and certified specialist. FREE quote
Get in touch
Latest review:
Painting & Decorating- 22 Mar 2024
I thought it was a bit of a longshot attempting to get a decorator to complete my job on such short notice, but no - the team at Yener were not only able to accommodate my timeframe, but they did a perfect job! Very happy with the outcome and would highly recommend!
Mo
Rating: 5 out of 5
Extension Builder in Swiss Cottage
Hi, I’m Mo – a skilled and trusted builder with a team of nearly 20 experienced tradesmen. We deliver high-quality results, fast and efficiently, no matter the size of the job. We specialise in everything from small repairs to full-scale builds, including: • Full house builds from the ground up • House extensions and structural alterations • Loft conversions & dormers • Bathroom & kitchen fitting • Plumbing & roofing • Bricklaying & repointing • Carpentry & joinery • Flooring (carpets, lino, laminate, etc.) • Painting & decorating • Plastering & rendering • Tiling • Windows & doors installation • Paving & landscaping • Damp proofing and more With years of experience and a reliable, multi-skilled team, we take pride in completing work to the highest standard — on time and within budget. We’re ready to take on your project and exceed expectations. Get in touch today for a free quote or site visit.
Get in touch
Latest review:
Conversions - General- 6 Aug 2026
He is very professional, reliable. I will recomade him to everyone
Stena Builders
Rating: 4.9 out of 5
Extension Builder in Swiss Cottage
At Stena Builders, we carry out all aspects of property maintenance, refurbishment, and general building work across London. With over 20 years’ experience, we take on a wide range of work including: • Internal repairs and refurbishment • Plastering, decorating, and general carpentry • Property maintenance for homeowners and landlords • Roofing repairs, roof replacements, and all types of roofing work We handle everything from small jobs to larger refurbishments, providing reliable service, clear communication, and quality workmanship throughout.
Get in touch
Latest review:
Guttering- 26 Jun 2026
Excellent on time, good communication. Good price. Fixed the problem.
Alchemy Build
Rating: 4.5 out of 5
Extension Builder in Swiss Cottage
We specialise in high end refurbishments / renovations but also undertake extension projects (loft, basement, rear, etc). We also do smaller projects of just bathrooms and kitchens. As we have all qualified tradesmen at our disposal we occasionally do more maintenance type work of repairs.
Get in touch
Latest review:
Restoration & Refurbishment- 26 Jan 2019
Excellent work. Aaron and his team did a great job renovating our flat , including rewiring and laying a new wooden floor. The workmen were very good , professional, thorough ,clean and tidy. We had to live at the property during the work and they made sure they left us comfortable at the end of each day. We are very happy with the result. Aaron was very easy to communicate with and responded quickly to any queries. Ten out of ten guys! Highly recommended
NG Construction Team Ltd
Rating: 5 out of 5
Extension Builder in Swiss Cottage
Elevate your space with NG Construction Team. Our expert builders and contractors ensures seamless, budget-friendly projects on schedule. Discover the perfect blend of skill and experience for your dream home transformation. We are professionals known for our efficiency, approachability, and exceptional functionality. Our team tackles every job with the skill and experience our clients rely on.
Get in touch
Latest review:
Plastering- 8 Oct 2022
Excellent, 100%-recommended, 5-stars out of 5! Honest, knowledgeable, careful and conscientious with his work, flexible, hard-working, on-time, good communication (in-person and via txt) and v friendly. My project involved multi-finish/skim-plastering 3 rooms in a loft extension, including various fiddly/tricky bits. I will not hesitate to use Gediminas again for both large and small jobs - many thx :)
Job well done
Rating: 5 out of 5
Extension Builder in Swiss Cottage
https://www.TikTok @sergiucriste take time check my profile. Any job undertaken … which I believe I can offer good quality work as reasonable price … with more responsibility and knowledge
Get in touch
Latest review:
Restoration & Refurbishment- 15 Oct 2025
Quick, efficient, takes pride in his work and charges a good, fair price based on some other quotes I received. Whilst it wasnt the original work I had requested, Sergio was flexible and came over to help with last minute work to remove some garden slabs and concrete for a heat pump base. Seeing his work and professionalism, I would definitely hire him again if needed. Some tradesmen on MyBuilder said it would be a huge job and quotes extortionate amounts - Sergio came at 12pm, tidied up as he went along and was done by 1.30pm. 1 man, no fuss, just decent, hard working and honest.
PACHO CREATE LTD
Rating: 5 out of 5
Extension Builder in Swiss Cottage
Pacho Create specializes in high-quality loft conversions, home extensions, and full refurbishments—transforming homes into beautiful, functional spaces. With a focus on craftsmanship, planning, and client satisfaction, we bring your vision to life on time and on budget. Let me know if you want a more premium, modern, or friendly tone.
Get in touch
Latest review:
Tiling- 24 May 2026
I cannot recommend John from Pacho Create Ltd highly enough. I'm a very particular client with high standards, I was impressed by his care, patience, and professionalism throughout. He clearly takes pride in delivering quality work and paid close attention to every detail. Living in a small flat, I was concerned about dust, but John proactively created a solution to minimise disruption, which I really appreciated. He also gave excellent advice on budget-friendly waterproofing products. We had a challenge with large-format tiles, but John worked closely with me to plan the layout, ensuring a natural, balanced finish. The workmanship is outstanding – minimal wastage, precise alignment, and superb attention to detail. I wouldn’t hesitate to use John again, in fact, I’m already planning to have him back to tile around my bath in the near future. I highly recommend him to anyone looking for a skilled, reliable professional.

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.

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 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.