Studio Hagen Hall transforms London Grade-II listed terrace with Japanese modernist fusion

Heion House, a renovation of a Grade-II listed Late-Georgian terrace in Islington, London, has been completed by Studio Hagen Hall while preserving its original footprint. The design merges heritage architecture with elements of Japanese style and modernist touches, resulting in atmospheric interiors. Studio director Louis Hagen-Hall emphasizes the harmony between tradition and contemporary design achieved through repairs and new joinery. Structural challenges were resolved using insulation and breathable plasters. The upper ground floor now houses the primary bedroom, while the middle floor has been transformed into a south-facing snug furnished with David Horan armchairs and antique Japanese pieces. The lower ground snug includes built-in leather sofas and shelving for a collection of Japanese ceramics, and the garden features a sunken dining room with level access. The clients focused on enhancing quality over expanding size.