Max Dewdney & Marcel Rahm

Max Dewdney and Marcel Rahm are London based architects and founders of Studio DERA, a True Value Partner.

Studio DERA specialises in high quality residential design, from sensitive refurbishments and listed buildings to new build homes, extensions and complex reconfigurations. Their work is focused on creating finely crafted spaces that balance beauty, practicality and long term performance.

With each having over twenty years of professional experience, they bring strong planning expertise across London boroughs and beyond. They are experienced in unlocking constrained sites, including heritage settings, tight urban plots and complex existing buildings where every intervention must be carefully justified. They translate policy and technical constraints into clear, workable design strategies that enhance liveability and protect long term value.

Their projects regularly involve negotiating with planning officers, responding to objections, coordinating heritage and technical consultants, and developing detailed, buildable packages for construction. Their approach is research led, detail driven and performance minded, with particular attention to everyday comfort, including stable temperatures, good air quality, calm acoustics and generous natural light.

For True Value clients, Max and Marcell bring calm, pragmatic design strategy and rigorous problem solving, combined with residential design quality that safeguards value and enhances daily living.

Max Dewdney
Architect - ARB, RIBA
Studio DERA Director

Marcell Rahm
Architect – ARB
Studio DERA Director