Why the scheme matters
HDB doesn't sell flats to individuals in the abstract — you apply under a defined eligibility scheme that specifies who must be in your "family nucleus", any age and citizenship requirements, and which income ceiling applies to you. Getting this wrong is one of the most common reasons applications stall.
The main schemes
| Scheme | Who it's for | Notes |
|---|---|---|
| Public Scheme | Buying with spouse, parents, children or siblings | Most common scheme for families |
| Fiance/Fiancee Scheme | Engaged couples not yet married | Must register marriage within 3 months of key collection |
| Single Singapore Citizen Scheme | Unmarried Citizens aged 35+ | Restricted to 2-room Flexi (resale wider options) and certain flat types |
| Joint Singles Scheme | Two to four unmarried Citizens/PRs buying together | Combined income ceiling applies |
| Orphans Scheme | Unmarried Citizens under 35 who have lost both parents | Treated similarly to families for eligibility |
| Non-Citizen Spouse Scheme | Citizen/PR buying with a non-citizen spouse | Different grant and subsidy treatment applies |
Income ceilings
Income ceilings differ by scheme and by whether you're buying a new flat (BTO/SBF) or resale, and whether you intend to use CPF housing grants. Resale purchases without grants generally have no income ceiling, but grant eligibility is where the ceilings bite — check the specific ceiling for the grant you want, not just the flat type.
Your HFE letter application will surface the correct scheme and ceiling for your situation automatically — use it as your source of truth rather than trying to self-diagnose from general guides like this one.