HDB penthouses, a rare and exclusive form of HDB flat, are no more currently being developed and therefore are only accessible on the resale market. They are generally Government Maisonettes or Executive Apartments that occupy the top flooring of HDB blocks and therefore are noted for their spacious, multi-level layouts, https://hdbpenthouse2101552952.livebloggs.com/43691631/hdb-penthouse-210-15