Key Terms: HDB Apartments for Rent List your HDB flat or HUDC apartment or Executive Apartments for rent in this category. Don't forget to make sure that you have proper permission from HDB to rent your flat. If you are posting an ad to rent your HDB room, please you the category 'Rooms for Rent'. Singapore, HDB Apartments for Rent in Singapore List your HDB flat or HUDC apartment or Executive Apartments for rent in this category. Don't forget to make sure that you have proper permission from HDB to rent your flat. If you are posting an ad to rent your HDB room, please you the category 'Rooms for Rent'., ClassAds HDB Apartments for Rent results : List your HDB flat or HUDC apartment or Executive Apartments for rent in this category. Don't forget to make sure that you have proper permission from HDB to rent your flat. If you are posting an ad to rent your HDB room, please you the category 'Rooms for Rent'.