there are some options after the 99-year lease runs out on the early batch of hdb flats. if structural conditions are good and can last another 50 years, hdb can kick out lessees and reuse these flats for 20 to 50-year rentals to sinkies and pr’s. or they can repurpose these flats as dormitories for foreign workers on work permits. or they can offer 1 to 5-year short term rentals to foreigners on 2-year work visas. lastly for more value they can tear down and either auction off 99-year parcels to private developers or redevelop them for new bto and ec flats. whichever option, heads they win tails you lose.