Foreigners are permitted to purchase residential property in Singapore, with certain limitations. Under the Residential Property Act, they can own apartments or condominium units without prior approval within the restricted areas, subject to filing a notice with the Controller of Housing. However, they are not allowed to acquire landed properties such as terraced houses, semi-detached houses, or bungalows unless given permission by the Singapore Land Authority (SLA) for certain types of work passes. The SLA's approval is also required if a foreigner marries a Singaporean citizen or becomes a permanent resident, allowing them to purchase landed properties. The rules are designed to ensure that housing remains accessible and affordable for Singaporeans while also catering to the needs of foreign investors within defined parameters. Foreigners looking to invest in Singapore's real estate market should familiarize themselves with these regulations and seek professional advice to navigate the process smoothly.