A new annex for Grade II*-listed theatre and the redevelopment of its back of house

A new-build six-storey extension and major reworking of the back of house to the world-famous Grade II*-listed theatre in London’s Waterloo. Highlights include an innovative natural ventilation system facilitated by thermal modelling. Rated BREEAM Excellent.

The Old Vic Theatre is located on Waterloo Road in London. New back-of-house facilities will be situated next to the theatre, replacing a former commercial restaurant. The project aims to meet the client’s budget while delivering a bespoke, highly sustainable solution through excellent design and construction standards. The new annex will feature a triple-height street café, script library, writers' room, learning centre, green room, and rooftop event space.

The site remains comfortable in summer due to passive strategies such as thermal mass, secure nighttime cooling, shading, and natural ventilation.

Key project features include a natural ventilation system that mitigates noise and pollution from the busy road, using a fully sealed front façade. To compensate for the timber structure’s limited thermal mass, the system draws air from the top of the stairwell, cooling it via the staircase's thermal mass. In warm weather, the cooled air flows into lower areas and rises to exit through a solar chimney. The process is driven by heat from occupants and solar gain through the glazed front façade as well as carefully detailed roof cowls to maximise the cooling benefit of the prevailing wind. Stairwell glazing at each floor enhances daylight and visual connectivity.

A low-temperature hot water system, including domestic hot water, is powered by rooftop air-source heat pumps. 

The project has also remodelled the existing back-of-house areas with a relocation of the stage door, improved dressing room and office facilities and a rooftop air handling unit (AHU) supplying fresh, tempered air to the rehearsal room, supplied via an air source heat pump.

The Old Vic Theatre sets a new standard for sustainable design in historic buildings by implementing innovative passive strategies along with energy-efficient systems, creating an enhanced environment for performers and visitors alike and securing its legacy for generations to come.