Coste + Beno Ltd

We have contracted Marius and Beno to do our homes loft conversion and extension including planning permissions. They prove themselves to be competent and professional, meeting the timescale promised and doing an exquisite job.

We had a very complex multistory renovation project on a six-floor Victorian home. We had all sorts of issues with establishing the right type of scaffolding. Primrose Hill is a conservation area. We had all sorts of limitations with the types of exterior paint, moldings, and window repairs. The quality of the work was exceptional. The team also resolved heating and water issues that we had in the house. You can work in partnership with them. They have a very hard-working team that has the highest quality standards. The Coste Beno partnership is exceptional. You have a world-class architect working with a builder with strong leadership skills. We had one snagging item that needed to be addressed i and the team resolve the issue with extreme professionalism. Marious and Benny bring modern design and construction with old school attention to detail. I fully recommend the team.

Coste & Beno deliver excellent and quality works for construction projects. They have a great and experienced team, outstanding customer care and an impressive attention to detail. We would definitely recommend!

We were lucky enough to be referred to Marius to undertake the renovation of the bathroom at our small flat in Shoreditch. Marius was a dream to work with. We had the added complication of trying to renovate the flat from Australia - Marius kept us constantly up to date with progress, raised any concerns/issues together with suggested solutions, liaised with the suppliers in our absence - and even diplomatically found a way of suggesting better options than our chosen products! We are thrilled with the result. We have no hesitation in recommending Marius and his team for your next renovation.

Marius was a pleasure to work with. He came up with great design ideas & drawings, took care of all the planning and structural requirements. In addition, Marius made the time to explain the whole process to us, provided guidance & recommendations when we needed it and answered our numerous questions (it was our first home improvement project). And when we hit a major snag during the build, Marius was incredibly helpful & speedy in finding a solution. Wouldn't hesitate to recommend, and hope to be working with Marius in the future

I have known Beno for 10 years now and worked with his team on multiple works around my property. I don't think there is a room in the house that Beno hasn't worked on; to name a few the works include structural alteration to the lounge, removal of the chimney breast and installation of RSJs, plastered and redecorated multiple rooms, refurbishment of the bathrooms and kitchen. New garden patio, new fence, flower beds etc. I was happy to leave him and the team work on my property and deliberately went on holiday during the works in full confidence that the house was safe. On my return the house was very clean the the works done to a very high standard. I am continually in touch with them and ask for their advice and services whenever I need any design and construction works done. I do not hesitate recommending Coste + Beno to my neighbours and friends. You might get cheaper price but I doubt that the quality will match that of Beno's team. I have two pictures of my garden at hand to show you the quality of the works.

An excellent team, thorough, conscientious and trustworthy. Well managed, very good work quality, no cutting of corners or covering up future problems. Highly recommended for any building job.

Marius has been our architect, working with us to design a rear and side extension on our semi detached house in Oxhey Hall. The design includes repositioning the stairs and main bathroom, creating an open plan kitchen and living area, extending the third bedroom and adding a bathroom downstairs. Marius completed the technical drawings, applied for planning permission and permission to move the drains with the water supplier. He has also been available to liaise with our builder and party wall surveyor to ensure we were able to start the build with no complications. Our house is in a conservation area, Marius has had a good understanding of this, which is reflected in the plans being agreed. Marius has always been approachable and willing to help. He is very conscientious and a listened to what we wanted, allowing us to be creative but realistic. We would highly recommend Marius, he has made the daunting process of applying for planning permission a lot less stressful than imagined. It has been a pleasure working with him.

Coste+Beno negotiated us a great planning permission for our house .They produced excellent drawings and specifications and solved many technical issues . As a company they are experienced in balancing a creative vision with practical advice . They are professional and reliable and we have used them since for other advice and permissions

Coste+Beno are a dream-team! They're so skilled at what they do and wonderfully problem solving. They handled my renovations effectively & efficiently and were so considerate of my space. Marius, Beno & their team are perfectionists and their workmanship exceeded expectations. Trustworthy and thoughtful - I highly recommend them.

Marius helped us produced drawings for our extension and loft conversion to submit for planning and building regulations, which approval was received for both. He did a fantastic job and gave us a lot of advice. He was also very patient with us while listening to our ever changing requirements. I would highly recommend Marius and would not hesitate to use him again if I ever need a similar work done.