From the experience gained in his initial development, Triguboff bought his second block of land in 1963, this time in Smith Street, Tempe, and began building a block of eight units with a partner. He made a profit, which led to a second development in 1968 in Gladesville. At Meriton Street, Triguboff built a block of 18 units which provided the name of the company he registered in developers.
Triguboff is the managing director of Meriton Apartments Pty Ltd. As of 2015 Meriton had built more than 55,000 residential townhouses and apartments since its creation in 1963, making it Australia's biggest residential property developer. In 2010, Meriton was said to develop an average of 1,000 apartments per year. As of 2015, the average exceeds 3,000 per annum. In particular, Triguboff has concentrated on the Gold Coast and Brisbane in Queensland, and Sydney's central business district, building more apartments than any other Australian residential developer. He is a proponent that the population of Australia should grow to reach 100 million.