In the next decade, as the number of HDB flats aged 40 to 50 years grows, the need to upgrade and redevelop the older estates will take on greater urgency. One priority area is lift upgrading. The Government has committed to bring lift upgrading to all eligible HDB blocks by 2014, so that residents of these blocks can enjoy lift access on every floor. HDB is also studying innovative lift solutions to lower upgrading costs so that more HDB blocks can qualify for lift upgrading.