Emmet O’Sullivan
Partner
BA HDip DipUD RIBA

Emmet joined JTP in 2013 and became a Partner in 2018. He is an architect and urban designer who leads a number of the practice’s major mixed-use regeneration projects. His expertise spans high-density residential, commercial, education and large-scale masterplanning, with a particular focus on complex urban sites requiring strategic vision and careful coordination.

Emmet is passionate about context and landscape, and strives to create site-specific places that thrive aesthetically, ecologically and socially. Through his work, he seeks to deliver neighbourhoods that are healthy, walkable and well connected, making a lasting contribution to sustainable communities.

He is currently leading several of JTP’s most significant brownfield regeneration schemes, including Beckton Riverside and Poplar Riverside in east London, and The Green Quarter in Southall, west London. At The Green Quarter, Emmet has overseen the delivery of a high-density, mixed-use masterplan for 8,500 homes. As well as shaping the placemaking and overall design strategy, he coordinated the multidisciplinary team in securing the Outline Planning Application and led the detailed design of the first residential phase of 620 homes, including 300 affordable homes within London’s first Strategic Housing Zone.

Emmet also leads the delivery of High Barnet, a 285-home development designed to Passivhaus standards adjacent to High Barnet Station for Barratt London and Places for London. The project establishes a new sustainable residential quarter with exemplary environmental performance, integrating high-quality public realm and strong connections to transport infrastructure while setting a benchmark for low-carbon urban living.

In Maidenhead, he has directed the vision and delivery strategy for The Nicholson Quarter, transforming an obsolete 1960s single-use shopping centre into a vibrant, mixed-use urban quarter of 750 build-to-rent homes and 100 elderly living homes. The scheme represents one of the UK’s early ‘shopping centre to town centre’ regeneration initiatives, responding directly to the evolving role of high streets and town centres.

Alongside his project leadership, Emmet is Partner in charge of JTP Delivers, the practice’s delivery-focused arm dedicated to the RIBA technical stages. In this role he oversees technical design governance, coordination and quality assurance across Stages 4–6, ensuring that design intent is carried through into robust, buildable solutions. He is also a Principal Designer, providing leadership on health and safety and supporting clients and consultant teams in meeting their statutory responsibilities.

Emmet is currently a member of the Hertfordshire Design Review Panel and for a number of years ran a diploma unit at the University of Sheffield School of Architecture. He has tutored Urban Design at University College London and taught at the University of the Arts London, maintaining a strong connection to academia and the next generation of designers.

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