23000 flats per year seems like a lot right? But it is still not enough.
Need to remember that quite a sizeable portion of flats built are 2-room units for singles.
Let's ignore those people for simplicity sake.
Using 1990 as a point of reference (because it is a round number, and people born in that year are in the age group looking at their first home purchase)
In 1990, total birth was around 60k. Haven't factor in people who migrated here later.
Assuming that all 60k are married, we will need 30,000 flats per year to house these married couples (2 pax per flat). And should they remain single (1 pax per flat), we would need much more than 30,000 flats per year to house them all.
By building only 23k flats per year, and assuming that they are all sold to married couples, it would only meet the housing needs of 46k people. It means that at least 14k people in each cohort are expected to buy their houses elsewhere or to continue living with their parents.
This 14k annual shortfall in housing accumulates, and is very significant when you multiply across all the cohorts of people of homebuying age.
There is a real shortfall of flats constructed.
Pushing people to the resale market is not a solution. It's not like many people have multiple properties to spare. The resale flat seller also has to find replacement housing.
https://data.gov.sg/dataset/newborn...ource_id=6ed0a70b-5559-480e-a76f-cbe55e59a7a7