Obtaining citizenship of Singapore is not as difficult as it sounds! However, there is no quick way out towards getting the same within 2-3 years. This is the basic time you will need to accomplish the first step, i.e. permanent residency. Singapore offers permanent residency to anyone marrying a citizen of the city-state, setting up a business or finding work here. After two years of legal permanent residency, people can apply for becoming naturalized citizens.