Established in 2003, JAM Builders Ltd., based in Putney, South West London, specialise in high end residential Design & Build, complete House Refurbishments & Renovations, Basement Conversions, Extensions, New Kitchens, New Bathrooms and Landscaping. We take pride in delivering work of the highest quality.

We work very closely with our clients, from our first meeting, right though to end product, ensuring our work satisfies their vision. The majority our work comes via recommendations and a repeat client base.  Our glowing testimonials speak for themselves.

JAM has a highly qualified and experienced workforce who share a wealth of experience and industry knowledge. On every project there is a JAM foreman assigned to site and the remainder of the workforce would consist of a combination of our own tradesmen and external sub contractors with whom we have established lasting relationships.

We pride ourselves in using only the highest quality products and the latest technology to ensure we meet the client’s expectations in delivering an exceptional project every time.


Jed Brent, Director With over 45 years of building experience in London, Jed lends a wealth of knowledge to JAM Builders Ltd. Covering all facets within residential construction, Jed spent many years working as a foreman bricklayer and overseeing many major structural alteration projects. He brought this wealth of experience to JAM Builders and Jed is essential to delivering the highly technical structural elements of our projects.

Marlon Cosmas, Director Qualified in New Zealand as a Carpenter, working on architecturally designed new houses. Marlon has over 20 years in the residential building trade. Since arriving in London in 1999, Marlon has undertaken work as a carpenter until forming JAM Builders where he is instrumental in project managing and delivering our product. Marlon enjoys a relaxed, friendly and professional approach in his relationship with our clients.

JAM Builders Ltd
104 Felsham Road
London, SW15 1DQ
T: 020 8785 6856
F: 020 8 85 0586