Testimonials from our Clients

From decades of expierience in the building industry, we have gained an enviable and un-rivalled reputation as one of the best and most trusted Design & Build companies. We treat our clients not only as customers, but as valued partners.
Mr & Mrs Reynolds
Surbiton, KT6
From our initial meeting, right through to completion and follow up Cobra Construction offered exceptional service. Using a team of highly skilled, respectful personnel and an excellent project manager who ensured no job was too big or small and was always available to discuss anything that cropped up. Teamed with lots of interesting ideas that inspired us to think of things differently. We wouldn’t hesitate to recommend Cobra Construction based on quality of workmanship, getting the job done on time, understanding our requirements and an excellent working relationship.
Full house renovation including loft conversion, extension and internal alteration.
Stephen & Verity Palmer
Surbiton, KT6
Martin and the team built us a fabulous rear extension on our Victorian property in Surbiton. The quality of the work was fantastic and the amazing team made what could be a stressful project much easier. They came in on time and budget and were in communication every day, which made the whole process far less stressful. I would highly recommend Cobra Construction to anyone looking to undertake a build.
Ground floor kitchen extension and internal alteration.
Adrian Dixon
Worcester Park, KT4
The decision to renovate our property with Cobra Construction was an easy one as they had previously created a beautiful property for family members. They were very understanding of our lack of experience in this field and were constantly on hand to guide us towards achieving a dream house. The Cobra Construction team are highly professional and strive for the best quality at all times. Our relationship and journey with them will continue for many years to come and we look forward to working with them again soon
House renovation including rear and side extension.
Martina Prosperetti
London, SE14
Cobra Construction renovated our newly bought house in south London at the beginning of 2020. The renovation works involved both structural works (removing chimney breasts and creating openings in low bearing walls, etc) and cosmetic works (stripping old wall paper, laying down new floors, repainting, etc). Lukas and the team showed great attention to details and great communication with us throughout. They worked quickly and their prices were very competitive. We definitely recommend working with them!
Internal alteration with structural work, outfit and decoration.
Peter Ashcroft
London, SE15
Cobra Construction were great. They started on the day they said they would, there were no surprises on price, they finished on schedule, and everyone who sees our extension and loft conversion comments on how good the quality of the finish is. They took real pride in the carpentry of our built in furniture in the loft. We’re very pleased we chose them for our building work and would have no hesitation recommending Martin and his team.
Second floor house extension, loft conversion and internal alteration.
Jean Pier Plowmman
Surbiton, KT6
Cobra Construction made a stressful process and enjoyable one, so much so that it was a bitter sweet moment when the work was completed, knowing that the excitement of the daily progress was over, and for having to say goodbye to the team. Cobra Construction were recommended to us after several interviews with other builders were underwhelming. I liked Martin from the outset, with his no nonsense approach, can do attitude, and personal touch in the meetings. He took the time to understand what our dream was, what our priorities were, and was transparent with his recommendations and really helped us make the right choices. He and his team were an absolute pleasure to work with, and I enjoyed the collaboration with them throughout. The craftmanship was excellent, the team were very respectful of my family and of my neighbours, they worked hard every day, cleaned up every day, and were very patient hearing my concerns all of which were promptly addressed. We were happy to see the team back a year after the build was completed, when as promised, they returned to patch things up for us. I couldn’t recommend them enough, and I will use Cobra Construction for every project I do in future!
Single storey house extension with internal alteration
Mark Ferrier
Beckenham, BR3
Cobra Construction were great from start to the finish. Always on site first thing and worked a full day. We received updates along the way to keep us informed. They kept within the budget and time frame and their work was finished to a high standard. I continue to recommend them to friends and family and wouldn’t hesitate to use them again.
Double storey and ground floor extension with internal alteration.
Sarah Bateson
Beckenham, BR3
A simply amazing firm. The standard of workmanship was outstanding. They were fast kind and very hardworking. 100 per cent trustworthy skilful knowledgeable and really professional. Lovely to deal with Cobra Construction and I highly recommend them!
Bathroom design and renovation.
Mark Denner
Wallington, SM6
We had a single storey rear extension which Cobra Construction delivered on schedule and within budget, great build quality and service from the team throughout the project, the team found solutions to any issues we encountered, and we were back in and settled two weeks prior to our second child arriving. Would highly recommend Martin and the team.
Single storey kitchen extension.
Nick Norton Smith
I have developed both domestic and investment properties for over 25 years, completing numerous projects—from loft conversions to full house refurbishments. Martin and Cobra Construction are the only company I would consider for my work. They have an incredible work ethic, a professional and courteous team and always deliver on time, on budget and with a  very high quality finish that makes them my go-to design and construction company. Highly recommended. Look no further. The best.
Full renovations of several projects including loft conversions, extensions and general building work.
Simon Brake
London, SW17
Cobra Construction was recommended to me by a friend who has done a number of projects with them. My project was to take a first floor 2 bed maisonette in Balham, which I have owned for many years, and convert the loft into a new one bed flat, and completely reconfigure the original flat into a new 2 bed apartment. Cobra Construction were very helpful during the design and planning stage. All the utilities needed upgrading, and Cobra Construction were very communicative and accommodating in helping me deal with what can be quite an ordeal. Working with Cobra Construction has been a very good experience. Their quote was reasonable and turned out to be accurate. They delivered the project pretty much on time, notwithstanding a little slippage due to the utility companies, not Cobra Construction. The quality of the work and the finish is very high and I'm delighted with the outcome. There were external challenges to face along the way, with tricky neighbours, co-freeholders, unhelpful utility companies, planners and building regulators but Cobra Construction were flexible and always able to solve any problems quickly and without fuss. I would happily recommend Cobra Construction's services to anybody looking to do building works.
Conversions on flat apartments
Kieran Swann
Beckenham, BR3
Our project was an extensive reconfiguration of the ground floor of our home together with the construction of a large single story rear extension and raised terrace area. The project ran for twelve weeks and finished on time in February 2020. We wanted to work with a company that would undertake the full project from the construction and structural work right through to the bespoke joinery and painting and decorating and chose Cobra following a neighbour's recommendation and having been impressed after first meeting with Martin. We are absolutely delighted with the final results and the high quality workmanship really shows in the wonderful spaces Cobra Construction created. We could not have been happier with the process of the work when the team was on site too. Martin and Lukasz (our site foreman / project manager) worked precisely to our plans and throughout always sought and accommodated our wants and preferences. The guys were really good at sharing their advice which really helped inform our decision making as we went through the build. They kept us updated daily and solicited our views via our WhatsApp group to ensure we were happy with all those important finishing details. They were also very patient and obliging on the few occasions we changed our mind on certain things too! The team always arrived on site early, without fail started work on time and worked tirelessly through the full day. Everyone we met was polite and considerate and the site was always left tidy at the end of the day. Really helpfully, Lukasz would often stay on site late to meet at our convenience after work too, which we really valued. We were delighted with Cobra Construction and wouldn't hesitate to use them again and to recommend them to others. Their mix of high quality work and their good, honest 'can-do' approach makes them stand out from the ordinary.
Single storey house extension and internal ground floor alteration.
Nikki & Carlton Walcott
Worcester Park, KT4
From our initial meeting with Martin regarding our total house renovation, we knew straight away from his attitude, knowledge and total professionalism that he would be our builder of choice. Not only does he have the building expertise but also has the creative ability to bring our ideas and dreams to reality. Cobra Construction went above and beyond our expectations and we would highly recommend their services.
Full house renovation including loft conversion and rear extension.
Greg Ivory
West Wickham, BR4
Just to say thank you for a first class job and for bringing the project in on time in very difficult weather conditions over the Christmas period. Lukas and his team were hard working, efficient, punctual, polite and always receptive and happy to accommodate our changing requirements without making an issue. Happy to recommend Cobra Construction to friends and family and you will remain top of our list for future works.
Single story rear house extension, landscaping with hard patio slabs finish.
Yvette Signh
Beckenham, BR3
Cobra Construction carried out a really excellent and highly professional job, they clearly know their stuff. Our project was completed to a high standard. We have been impressed on the attention to detail throughout the building works and following completion. All visitors to our home remark on the high standard of workmanship, plastering, tiles painting, woodwork etc. I would not hesitate to recommend cobra construction.. Martin and his crew.
Loft conversion and ground floor kitchen extension.
Anita Jouan
Beckenham, BR3
Cobra Construction was recommended to me a few years ago and since then they have built my summer house at the back of the garden, replaced my roof and rendered the front of the house. On all occasions they have been professional, extremely reliable and the work was completed to a very high standard. The price quoted was the price paid and there were no hidden costs. Definitely recommend.
Summer house, roof replacement.
Marc Thomas
East Molesey, KT8
We have been planning our dream home for a few years now and started to save up the money and take on a full renovation. After getting five different quotes we decided to go with Cobra Construction and we have not been disappointed ever since. They have been true partners throughout this last year transforming our home close to double in size and done it with great profession. Communication has been great which has helped deliver all the large and intricate plans we have wanted. We have been extremely happy and would highly recommend them for any external and internal project.
Full house renovation including rear and side double storey, rear ground floor extension new roof with loft conversion, summer house and landscaping.
Debbie Powell
Croydon, CR0
Martin and his team are highly competent, skilled, professional and considerate contractors, with an extremely high attention to detail and genuinely want to ensure you are happy with the work. I would not hesitate to recommend Martin and certainly intent to use again for further works.
Light house refurbishment and bathroom renovation.
David Liddell
London, SE20
Cobra Construction came highly recommended and I did not regret my decision in the slightest! From the first meeting with Martin the process was clear and direct. I had a loft conversion and used their architect for plans. The build was very professional and all the builders on site were top class and very nice people! The job was finished within the agreed timescale and was absolutely fantastic. I can highly recommend Martin and Cobra Construction!
Loft conversion and roof replacement.
Cyprian Njamma
Beckenham, BR3
We hired Cobra Construction to carry out a double storey side extension to our property. Martin was extremely professional in setting out a project plan to carry out the work and also improved on some of the designs drawn up by the architect. The work was completed on time and to a very high standard. We have since commissioned Cobra Construction to carry out other works around the property and all have been done to the highest of standards. Feel free to come round and have a look as we are his next door neighbour!
Double storey house extension, roof replacement and internal alteration.
Tess & Daren Thompson
Surbiton, KT5
The quality of service and the attention to detail that Martin and his team deliver is off the very highest standard. Every project we have worked with them on has run without a hitch. There is no group of builders that we would trust with our home more than Cobra Construction.
Full house renovation with internal alteration, ground floor extension, loft conversion and driveway.

Why should you choose us?

Stress-Free Build

We assign a dedicated project manager to keep your build running smoothly.

High-Quality Deliverables

We always aim for the highest quality to exceed our customer’s expectations.

Deliver On Time

A fast seamless planning, design and construction process with no hidden surprises in the end.

We Price Match

Found a cheaper price? Tell us and we’ll match it.

25 Years of Experience

Clients have confidence in our knowledge, expertise and word of mouth referrals.
We're affilliated with the following schemes for your protection: