Why is the 4-room PSF higher than the 5-room PSF

The 4-room PSF (price per square foot) is higher than the 5-room PSF because developers usually become price leaders in pricing, using new concepts to break price barriers. Additionally, prices for properties under construction are less negotiable and developers have control over the pricing. This often results in higher PSF for smaller units like 4-room flats compared to larger units like 5-room flats.

Hope this helps in understanding the pricing dynamics!