Extension Builders in Cottenham Park

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.2 (22 reviews)

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Some of our top rated extension builders in Cottenham Park

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Building Decorating
Rating: 5 out of 5
Extension Builder in Cottenham Park
I am a certified building technician with over 30 years of experience in construction, home improvement and maintenance projects. My aim is to provide all clients with first class service and a high standard of workmanship.
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Latest review:
Extensions- 21 Apr 2019
The initial job was to complete a ground floor extension and house refurbishment. The job covered kitchen extension, underfloor and central heating, re-pluming, laying flooring, stair refurbishment, downstairs WC, patio, painting/decorating and much more then i can remember. I posted the job on Mybuilder and got several quotes from different firms. I was impressed with Dariusz as he requested the plans in advance of attending and provided a quote that was reasonable, before moving forwards I asked if I could see/visit a couple of jobs that Dariusz had completed recently which he arranged the feed back from ex-customers was excellent and the work was competed to a impressive standard. I was very impressed with Dariusz and his team, anything he was unsure of regarding the design he would ask before moving forward any surprises that cropped up with he dealt with, the team where clean and tidy. We are extremely happy with the work completed, guest that visit always mention the quality of the finish. I have recommended Dariusz to friends and family as well as use him for other jobs we have since planned. I would like to thank Darisuz and his team for all there hard work!
Sandbrick Developments Ltd
Rating: 5 out of 5
Extension Builder in Cottenham Park
Based in South London, Sandbrick Developments Ltd is a trusted and experienced construction company delivering high-spec residential and commercial projects across London and surrounding areas. We specialise in: Full refurbishments House extensions and loft conversions New builds Office-to-flat conversions Basement construction and waterproofing Commercial fit-outs – including recent projects like a dental surgery and warehouse Specialist works – damp-proofing, bespoke finishes, and more From £1,000 refurbishments to £10,00,000+ builds, we offer tailored solutions for homeowners, landlords, and developers. Our projects are delivered with precision, transparency, and a genuine commitment to customer satisfaction. Why clients choose us: High-quality craftsmanship Clean, efficient project management Clear communication at every stage Fully insured and health & safety compliant Versatile team with experience across residential and commercial sectors Whether you're planning a home upgrade, a full-scale development, or a commercial transformation—we can help bring your vision to life. Get in touch today for a quote and a smooth, professional building experience.
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Latest review:
Extensions- 11 Dec 2023
Great team at Sandbrick! Would highly recommend Nauman and the team, they are very courteous, prompt and completed the project ahead of time! Professional and trustworthy- thanks 🙏🏼
C and C developments
Rating: 4.9 out of 5
Extension Builder in Cottenham Park
I have been in the construction industry for over 30 years I specialise in renovations Carpentry plastering extentions but can cover all aspects of construction and acoustic sound reduction
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Latest review:
Plastering- 26 Apr 2026
Conrad was absolutely amazing from start to finish - absolute gentleman, superb craftsmanship (walling off two double doors: plastering, skirting, paining etc). Very personable and great communication. Would highly recommend and would certainly hire again. Thanks Conrad!
FSB Company (UK) LTD
Rating: 5 out of 5
Extension Builder in Cottenham Park
FSB is a well-organized contracting company with a team experienced in large-scale development projects with leading UK construction companies. Based primarily in London, we offer a variety of self delivered services, including complete extensions, and conversions, small works, structural alterations, steel work installations, ground work (foundations, drainage, concrete sub and superstructures), hard landscaping and paving and soft landscaping. We manage our sites carefully and have a digital site management tool kit. Our fully managed service connects skilled tradespeople with experienced construction management directly ensuring attention to detail that begins with our Contractors Proposals and continues through to practical completion and aftercare.
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Latest review:
Extensions- 17 Nov 2025
Freddie, Kaz and Dan are a great team. I felt they were friendly and professional throughout. Any slight niggles were discussed and solutions found, quickly and professionally. They were respectful and went out of their way to get on with all the neighbours. Over all I would say they are a team of very nice people, who care about what they do and take pride in achieving the result their clients are after.
Sirius Construction Surrey Ltd
Rating: 5 out of 5
Extension Builder in Cottenham Park
We are professional builders with 20 years of work experience. We do extensions, loft conversions, new houses from foundation to the final touches. You get quality and quantity at the same time as we are perfectionist in our work and also hard worker. We have many reference work upon request.
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Latest review:
Extensions- 15 Jul 2019
Norbert and his team have transformed our house to the most amazing standard, we would recommend them to all our friends and family. The work schedule was managed so well, with minimal disruption to us with two young boys. We had a loft conversion, main bathroom renovation, utility room, downstairs toilet and a 4 meter kitchen extension. We stayed in the house whilst the work was being completed and Norbert and his team fitted in so well, it actually feels weird not seeing them in the house. They are such a lovely bunch of people. We are over the moon… on time, on budget and finished to a high standard. If we ever undertake renovation work again, Norbert and his team would be our 1st call!
M services
Rating: 5 out of 5
Extension Builder in Cottenham Park
We can perform a wide range of tasks across multiple trades, including carpentry, full bathroom refurbishments, extensions, conversions, refurbishments. 2S Constructions Ltd Company number: 13606134
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Latest review:
Extensions- 27 Aug 2025
Dunster House Garden Office (5m x 2.5m build) We are absolutely delighted with the garden office that Michal and Lenka built for us. From start to finish, their expertise and attention to detail shone through. They guided us with thoughtful consultation, listened carefully to our ideas, and delivered a finished office that is both beautiful and practical. Their work ethic, professionalism, and friendly approach made the whole process stress-free and enjoyable. The quality of the build is outstanding, and it’s clear they take great pride in what they do. This was a 10/10 experience, and we could not recommend them highly enough! We also used them again for another job to build install a Pantry; Michal and Lenka recently built and fitted a bespoke pantry for us using Howdens units, and we are beyond impressed. Their knowledge and craftsmanship are second to none. They made excellent recommendations throughout the process, ensuring the final result was exactly what we needed.
BS
Rating: 4.8 out of 5
Extension Builder in Cottenham Park
Our company specialises in the design and installation of custom and high-quality loft conversions and house extensions across London and the M25. While offering a personalised service, we bring the skills and experience required to ensure your loft conversion is completed to the highest standard and agreed timeline. Whether you are looking to add value to your property or create more space, our team will handle everything from planning permission to architectural design and construction
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Latest review:
Extensions- 31 Aug 2024
BS Loft Conversions are reliable, honest and operate with integrity. I recommend them to anyone who is looking for some building work whether they are big or small projects. They arrive on time, work hard and leave the site clean and tidy. Anxehlo always takes the time to answer any questions we may have and talks us through the process before providing us with all the options available from repair, replacement or re-instatement. As a novice to a huge development, it was difficult to find builders you can trust but, Anxhelo made that process easier, restoring our faith in construction work.
GA Builds
Rating: 5 out of 5
Extension Builder in Cottenham Park
For half a decade, G-A Build has been at the forefront of redefining living experiences through our unwavering commitment to excellence in construction. As a premier provider of bespoke building solutions, we take pride in offering a comprehensive suite of services tailored to meet the diverse needs of our clients. From revitalizing tired interiors to expanding living spaces with loft conversions, our expertise spans the spectrum of home improvement. Our kitchen refurbishment services breathe new life into the heart of your home, while our bathroom refurbishment transforms ordinary washrooms into luxurious sanctuaries of relaxation. At G-A Build, we understand that the true beauty of a home lies in the details. That's why our painting and decorating services are executed with precision and finesse, ensuring every brushstroke reflects your unique style and personality. Our plastering and rendering expertise create smooth, flawless surfaces that serve as the perfect canvas for your design dreams to unfold. But our dedication to craftsmanship doesn't stop there. With our carpentry services, we bring timeless elegance and functionality to every corner of your home. Whether it's intricate woodwork or bespoke cabinetry, our skilled craftsmen deliver unparalleled quality and craftsmanship. Beyond aesthetics, we also specialize in restoring the structural integrity of your home. From brick cleaning and repair to repointing and stone restoration, our meticulous attention to detail ensures that your home stands the test of time, retaining its beauty and value for years to come. At G-A Build, our success is measured not only by the projects we complete but by the relationships we build along the way. For five years, we've been privileged to work with clients who trust us to bring their visions to life. As we embark on the next chapter of our journey, we remain steadfast in our commitment to excellence, innovation, and exceeding expectations every step of the way.
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Latest review:
Gerti completely renovated both of our bathrooms, and the final results were absolutely amazing—exactly what we wanted. He was extremely flexible, offered valuable advice for other aspects of our home, and consistently went above and beyond. Having done a lot of work on our house, we can confidently say he is the best builder we’ve worked with. His pricing was very reasonable, and we will definitely use him for future projects.
ATICO
Rating: 5 out of 5
Extension Builder in Cottenham Park
My name is Thomas and I'm owner manager of ATICO. If you use us for your building work, I hope that your experience reflects our passion for working with the customer to create quality job at a price considered to be fair to all.
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Latest review:
Bathroom Fitting- 7 Apr 2020
Professional, knowledgeable and works to a very high standard. Highly recommended.
Axe Construction Ltd
Rating: 5 out of 5
Extension Builder in Cottenham Park
Hello and welcome to Axe Construction Ltd. If you are thinking of renovating your home, building an extention or arranging general maintenance in your property, we are here to help. Our priority in job is to deliver high standard service to customer’s satisfaction.We offer a professional and friendly service to all private and commercial clients in and around London We are always go above and beyond to satisfy our clients.We are happy to provide references from our clients and arrange site visit
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Latest review:
Conversions - General- 7 Feb 2019
Paul and his team completed our project timely and at a competitive quote. The team was friendly and easy to communicate with. We had some specific requirement and they were able to find solutions for us quickly. Overall we are happy with their work.
Mark Flood Renovations
Rating: 5 out of 5
Extension Builder in Cottenham Park
With over 20 years of crafting bespoke living spaces, Mark Flood Renovations has become synonymous with excellence in building homes that reflect the distinct personalities of their owners. At the helm of a team brimming with skilled artisans, we champion a commitment to craftsmanship and meticulous attention to detail in every project. Our services span the full spectrum of home creation, from custom-fitted furniture to full-scale renovations. We prioritize a collaborative approach, ensuring that your unique vision is at the heart of our work. The journey of transforming your home should be filled with anticipation, not anxiety. Our project management is carefully designed to provide peace of mind, keeping you connected and confident throughout the experience. Dedication to service quality is our cornerstone, underpinned by comprehensive insurance and guarantees on all work. Your investment is safeguarded, your satisfaction paramount. Discover the breadth of our artistry on Instagram and consider this an invitation to begin a conversation about your home's potential. Let's craft a haven that's unequivocally you.
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Latest review:
Carpentry- 14 Oct 2022
Mark F arrived promptly and with all the necessary equipment to complete the job. He took the relevant measurements and checked with me that those were fine, and carried on meticulously, ensuring that the dimensions and cuts were all accurate, he then fitted back the cabinet door with minimal fuss (also hauling it through my narrow staircase without damaging any of the walls). All in all a great job, a reasonable quote, and a brilliant result.
ASAR PLUMBING AND BUILDING
Rating: 5 out of 5
Extension Builder in Cottenham Park
I am a qualified plumbing heating engineer and General builder, i have learned my trade working for a plumbing / building company for 15 years. i have also been Nescot College for four years where i gained my qualification. I am hard working person, honest, trustworthy and take pride of my job. Customer satisfaction is my top priority.
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Latest review:
Extensions- 17 Mar 2024
Agim and his team were great - communicated what they would do at each stage, the timing, materials needed etc., no major surprises. The building is quite old and wonky in places so they had to work with that and the finished result looks great. Very happy and have would recommend Agim again!
Bledi Construction Ltd
Rating: 5 out of 5
Extension Builder in Cottenham Park
Bledi Construction Ltd is a Design&Build family-owned business established in 2017 with over 15 years of experience. Located in South-West London, we specialize in all building works including basements, extensions, and loft conversions to the highest standards. The architectural services include architectural surveys, design proposals, and planning applications.
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Latest review:
Conversions - General- 3 Sep 2023
Lerida was excellent- would highly recommend. Met with us, understood our needs, and produced a good set of options and designs. Our preferred option was then tweaked further with great attention to detail shown. We are now looking forward to working with them on the build of the project.
Dalibpro services limited
Rating: 5 out of 5
Extension Builder in Cottenham Park
Since 2004, DPS Ltd. based in south west London delivers hight standard new build project, house extension, loft conversation to people in Southwest London and Surrey. Our aim has always been to became a company that people associate with quality, professionalism and customer satisfaction.
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Latest review:
Ground floor back extension, reconfiguration and full redecoration. We chose Dali, firstly through recommendations by neighbours, seeing his work first hand and feeling confident during the consultation phases of his ability to deliver. Prior to the job commencing a schedule of works and costing were clearly agreed. We were impressed with Dali's level of communication and his availability to meet with us personally. He would always return a message promptly and that continued throughout the job. Dali expertly guided us through the project and also arranged architect and structural drawings, site surveys, council applications and 3rd party wall advice. We decided to live-in during the build which is never ideal but Dali cordoned off spaces for us to live whilst allowing him to get on with the job. He set up temporary kitchen and laundry facility some 3 or 4 times for us! Now for the business end. Dali supervised the project but also allocated a Manager, Michal to be our point person and he was on site every day without fail. Both would respond to any question promptly and courteously. I learnt to keep the questions short and be more patient as the job progressed as everything was always on their agenda to be done. Teams of builders would arrive punctually by 8am and work would always start promptly. Everyone on the team had clear instructions and their industry was on show from start to finish. I could not fault them at all for their reliability and professionalism. They were all courteous, polite and respectful and would also make a point to clear up after themselves at the end of each day. On occasions I did request a deviation it was fully discussed so we could make informed decisions but nothing, no matter how small, was made to seem trivial as they were intent on delivering an unquestionable product. The job progressed sometimes at lightning pace with crews of builders coordinated daily and we hardly had a single day where someone was not in attendance. Dali would continue with a regular update by email or phone so we were always aware of progress. When problems did occur, Dali and Michal would distress those situations, find solutions quickly and sometimes you are oblivious to there even being a problem. On the few occasions they made mistakes they were not argued about but swiftly rectified ... finding someone who was honest and proud of their workmanship has been a true find. The work progressed to schedule and the end result is something we are not only thrilled about but cannot fault at all. It is a level of workmanship we have been truly delighted with. Another thing I am confident of is that if something does happen in the future Dali will respond to my call whether it be now or in a year's time. There is so much positive to be said and I would highly recommend DPS Ltd for their professionalism, reliability and workmanship so much so I have already asked them to continue on the 1st floor.
Global Rise CIC
Rating: 5 out of 5
Extension Builder in Cottenham Park
At Empower Build, we specialise in delivering high-quality kitchen and bathroom fitting, plumbing, electrical services, and loft and extension construction. With a commitment to precision, reliability, and customer satisfaction, our skilled team ensures that every project, whether a small renovation or a full-scale home extension, meets the highest standards. We focus on creating beautiful, functional spaces tailored to your needs, using the latest techniques and materials. Trust us to transform your home with expert craftsmanship and seamless project execution from start to finish.
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Guildkey Builder
Rating: 4.9 out of 5
Extension Builder in Cottenham Park
Welcome To GUILDKEY BUILDER's, We are a small company and specialise in: Loft conversions, Side and rear Extensions also double extensions and full refurbishments We also carry out small jobs such as kitchens fittings and bathroom fittings, developing properties into flats, We provide quality service to our customers. We want you to live in a better and secured Home
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Latest review:
Extensions- 31 Jul 2025
Absolutely incredible from start to finish! Professional, knowledgeable and easy to work with. Managed to think on his feet and fix unexpected problems, gave advice and was always polite and friendly! My house is completely transformed & I’ll definitely be using Kaiser again for the next house Reno!

4.2

Top rated Extension Builders

Our Extension Builders in Cottenham Park, are rated 4.2 out of 5 based on 22 reviews from customers like you.

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What types of services are offered by local extension builders in Cottenham Park?

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 Cottenham Park 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 Cottenham Park who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in Cottenham Park?

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

Find extension builders in Cottenham Park with MyBuilder

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

Step 2: Compare different extension builders in Cottenham Park

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

Step 3: Hire Cottenham Park extension builders with confidence

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

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

What to ask a Cottenham Park extension builder before hiring?

Before hiring an extension builder in Cottenham Park or extension building company in Cottenham Park, 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 Cottenham Park?

An extension builder in Cottenham Park 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 Cottenham Park 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 Cottenham Park?

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 Cottenham Park 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 Cottenham Park 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 Cottenham Park

Can an extension builder in Cottenham Park help with planning permission?

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

Many Cottenham Park 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 Cottenham Park help with materials and finishes?

Yes, most extension builders in Cottenham Park 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.