This is in fact one of the core criticisms of these sort of policies. The concern is that by increasing the allowed density on land, the underlying price of the

This is in fact one of the core criticisms of these sort of policies. The concern is that by increasing the allowed density on land, the underlying price of the land also subsequently increases. Accordingly the "value" that one gets for their dollar decreases. While before one may have paid 1.2M for an house and full lot, now suddenly 1.2M can't buy a full lot, but 900k can buy a 1000sqft apt part of that lot. There's an upside for someone that needed more room and could never afford a 1.2M house, or a renter that just wants more apt options, but there's a downside for someone who could afford an entire house but is now seeing the price of an entire house go up. All this being said, in practice it is arguable whether the land values do increase that much. The fact that these changes are being applied city wide at once may limit the effect.