Donald Insall Associates

Architecture and PlanningEngland, United Kingdom51-200 Employees

Donald Insall Associates is an architecture and planning practice based in London with a long history of shaping heritage conservation. For more than 65 years, the firm has treated conservation as a dynamic process of managing change, aiming to keep historic environments purposeful and resilient. Operating as an employee-owned practice with national reach, it provides expertise in conservation, heritage consultancy, new design in historic settings, and townscape advice.

Its client base spans organizations involved in heritage management, with a collaborative approach that bridges architecture, design, and heritage consultancy to deliver solutions for clients, partners, and communities. Recent projects and recognition, such as the 2026 awards for the Rochdale Town Hall restoration, illustrate the firm's role in delivering high-quality conservation work.

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