PHOTO: Gretel Packer has secured a more than $5 million capital gain on the sale of her CBD family office space.

Billionaire Gretel Packer just can’t seem to help but turn a profit since she settled on her share of her father Kerry Packer’s estate. Take her latest property foray, selling the family office headquarters in the CBD’s landmark Hudson House for $13.5 million to Ramsay Health Care chairman Michael Siddle.

Siddle purchased the whole-floor suite in a company name, Woolwich Investments, presumably named after the waterfront residence he has shared for almost 30 years with his wife Lee.

Hudson House at 127-131 Macquarie Street Sydney
The landmark 1960s building Hudson House is a hive of rich-list owners.

The sale represents a more than $5 million capital gain for Packer since she purchased it less than four years ago for $8.37 million.

Packer isn’t the only rich-list occupant of the landmark 1960s building opposite the Domain. Her investment adviser Will Vicars bought office space in 2016 for $5.84 million, and the Fairfax family’s Cambooya company bought into it in the same year for $7.6 million, adding more space last year for $11.66 million.

READ MORE VIA DOMAIN

MOST POPULAR