Does the highest floor always have a premium to the PSF, and why?

No, the highest floor does not always command a premium to the psf in Singapore condos.

Higher floors often fetch higher psf due to better views, less noise, more privacy, and prestige, as seen in The Collective at One Sophia where a 10th-floor penthouse set a price high of $2,996 psf and Grand Dunman where a 16th-floor unit hit $2,994 psf. However, counterexamples exist like Nassim Jade, where a 3rd-floor unit achieved the new high of $3,008 psf, driven by location prestige over height. Premiums depend on factors like unblocked views, orientation, block position, and market demand rather than floor alone. Check EdgeProp Singapore's transaction data for specific projects to compare stacks and floors.