What is the source of your information?

The information regarding Singapore property and real estate, including guidelines on buying and selling properties, is derived from various resources available on EdgeProp Singapore. This includes the latest property news, transaction data, price trends, and specific tools designed for real estate analysis.

For instance, if you are looking to understand the process of buying an HDB after selling a private condo, you would need to refer to the guidelines set by the Housing and Development Board (HDB) which are often discussed in the property news and articles on EdgeProp Singapore.

In your specific case, the requirement to sell your private condo before purchasing an HDB is a standard rule, and any waivers or exceptions would be subject to HDB's approval and guidelines, which can be found through the resources and news updates on EdgeProp Singapore.