Private equity firm ASK Group today said it has partnered with TVS Group's realty arm Emerald Haven Realty to set up a Rs 400-crore real estate investment platform that would invest in affordable and mid- segment housing projects. "The partnership between ASK Group's real estate private equity arm ASK Property Investment Advisors and TVS Emerald is announced at a crucial time that signifies the opportunities and growth potential in the affordable and mid- segment real estate market," the company said in a statement here.