There is absolutely no public information on a specific "hdb suggestions type 1k 28" as this is not an ordinary HDB identifier. Having said that, HDB delivers various channels for opinions. The key technique is through the "Generate to Us" e-responses kind around the HDB website. This manner helps you to post concerns or feedback, and HDB will reply without delay. For certain problems in the community, check here like cleanliness or routine maintenance troubles, the LifeSG app and OneService Application are advisable as they immediate comments to the suitable authorities. HDB also has A brief Building Assistance Centre (BSC) for new flats to take care of rectification requests in the 1-12 months Defects Liability Interval. For basic inquiries, you can simply call the HDB Branch Company Line at 1800-225-5432.