For resale HDB flats, what is the average PSF gap per floor?

For resale HDB flats in Singapore, the average per square foot (psf) gap between each floor level typically ranges from about 3 to 5 dollars per floor. This means that for the same flat type within a block, higher-floor units are generally transacted at a psf premium over lower-floor units. The total difference between a low-floor unit (for example, level 2) and a high-floor unit (for example, level 17) can accumulate to about 45 to 75 dollars per square foot on average, depending on location, block orientation, and view. The exact premium per floor may vary across different estates and flat types. For detailed, transaction-based psf analysis by floor, EdgeProp Singapore provides interactive tools and research features.