First look inside Sydney's most exclusive harbourside building at Barangaroo

Once complete they will be the most exclusive buildings south of the Sydney Harbour Bridge, and now developers are letting the general public see inside.

Lendlease has formally announced the launch of its second residential tower at One Sydney Harbour in Barangaroo, sharing artist's impressions of what the apartments in "Residences Two" will look like.

Previously only a select list of customers were invited to view the display suite, which has been exclusively offered via an off-market sales campaign.

READ MORE: Exclusive look inside Sydney's new luxury towers

Set to be complete in 2024, the Residences Two tower will stand 235 metres high and will comprise 322 homes across 68 levels.

Prices will start at an eye-watering $2 million for a one-bedroom apartment, and will rise in scale to more than $3.5 million for a two-bedroom flat and three-bedders expected to fetch more than $5 million.

Ben Christie, Head of Residential at Lendlease, said some buyers have already said they will buy multiple apartments and combine them.

"Pleasingly, we are also seeing high levels of interest from both customer referrals and repeat purchasers who know Lendlease will deliver an exceptional product and a customer-centric experience at One Sydney Harbour," said Mr Christie.

"Sales to date include several large apartment purchases, with some customers planning to amalgamate these into substantial homes."

More than 1,400 workers are currently employed on the project.