The £165 million deal was completed through a joint venture, with Partners Group investing from its real estate secondaries strategy.
The firm has reportedly engaged with prospective buyers to facilitate liquidity for investors in a US-based open-ended fund managed by Blackstone Property Partners.
The deal will support the UK housebuilder's expansion toward 7,000 homes a year, with Apollo retaining control.
The transaction, expected to close in Q4, will support the growth of AREP's investment and development platform, including its vertically integrated data center strategy.
Australian Retirement Trust and Mercer Super are reportedly joining the British resort operator's cap table.
The recently registered interval fund, sub-advised by Barings, will target private asset-based credit investments through direct and secondary transactions.