Feilden+Mawson led the meticulous restoration, conservation, and transformation of Nos. 19, 20, and 21 Portman Square into one of London’s most distinguished private clubs. Originally designed in 1775 by James Wyatt and later reimagined by Robert Adam, these Grade I Listed buildings had been unoccupied since the late 1980s, placing them on the Buildings at Risk Register.

The project’s first phase focused on restoring the fine rooms, integrating modern facilities—including a health spa, new bedrooms, and commercial kitchens—while ensuring accessibility and fire safety compliance. Sensitive interventions, such as targeted dry rot suppression and re-roofing, safeguarded the building’s historic fabric.

The second phase saw the transformation of No. 21 Portman Square, where Feilden+Mawson introduced contemporary design elements that harmonise with the club’s heritage. The reimagined interiors accommodate gym and spa facilities, elegant reception rooms, and refined residential suites, creating a seamless blend of period grandeur and modern luxury.

Through a balance of conservation and innovation, Feilden+Mawson has ensured Home House remains a prestigious, functional, and architecturally significant landmark in central London.