Rich list developer Tim Gurner and real estate financier Qualitas have secured a $2 billion capital injection from an offshore institutional investor to drive the growth of their build-to-rent platform, as they look to expand its presence in Sydney.

The blockbuster raising for the second fund under the GQ Multifamily Build-to-Rent platform follows the joint venture partners securing $1.2 billion of equity investments for the first fund, including a cornerstone backing from a sovereign wealth fund.