Australian property developer Thirdi Group has embarked on a challenging office-to-residential conversion venture, acquiring a commercial tower on London’s River Thames to create luxury apartments.

The 4375sq m Westminster Tower office building is set to undergo a remarkable transformation into a residential tower, featuring 28 apartments, including three whole-floor penthouses, and 25 two and three-bedroom offerings.

The estimated end value of these “ultra-exclusive” residences stands at £150 million.

Ron Dadd, one of Thirdi’s co-founders, emphasized the importance of assessing the building’s structure to determine its suitability for residential living during the conversion process.

“The challenge lies in not always knowing the full extent of the structure until the renovation begins. Unlike new builds, compliance with current codes and standards must be addressed retrospectively,” said Dadd.

Ensuring that the residential schemes meet build standards is a key focus during the planning phase.

Westminster Tower, once a Royal Doulton ceramics factory, will be renamed “The Doulton” in tribute to its 1980s heritage, situated at the junction of Albert Embankment and Lambeth Bridge on the River Thames.

Luke Berry, Thirdi’s co-founder, revealed that 16 of the 28 residences will have carparks – a noteworthy feature considering the scarcity of parking in many newly consented Central London buildings.

“The Doulton will offer some of London’s most enviable views, combined with exquisite interiors designed and implemented by Banda,” Berry added.

For the construction and interior and architectural designs, Thirdi has entrusted Ant Yapi, a European construction company, and Banda, respectively.

The apartment block will also house 308sq m of office space, a private gym, yoga and pilates studio, and an infrared sauna.

Additionally, a concierge day car service is planned, taking advantage of London’s excellent transport infrastructure and access to amenities, reducing the parking demand for the project.