Jubilee Pool Penzance, a triangular lido built in 1935, could be transformed into the UK’s largest heated seawater pool, by London-based Scott Whitby Studio

 Scott Whitby Studio has won planning permission to upgrade the art-deco pool, which was built in the Cornish town to commemorate the silver jubilee of King George V.

The project will see the facility converted into a year-round tourist attraction, featuring a heated outdoor swimming pool, an enlarged cafe and bar, and a new community hall.

Architect Alex Scott Whitby said the ambition was to inject new life into an “important and much-loved listed building”.

 “We hope these proposals will lift Penzance from one of Britain’s most deprived areas to become the spa town of Cornwall,” he said.

The Grade-II-listed Jubilee Pool Penzance is the largest of just five seawater lidos in the UK. The triangular site is framed by a series of art-deco buildings. Scott Whitby Studio plans to infill the gaps between them, with new high-performance glazed extensions.

Aluminium-framed bi-fold doors will allow these enlarged buildings to open up to the public promenade, meaning they can be used for a variety of community events and activities. A new “sculpted” roof will unite the structures. Scott Whitby said this will transition “from a gently undulating form facing the street to a simple projecting roof facing the pool side”.

The project has received funding from the European Regional Development Fund, but an additional £350,000 was required to cover the full cost.

The local community has already raised £225,000 and is hoping to secure the rest through crowdfunding.