Kelo Shop of Horrors
If state governments want to condemn a small business district for building a GM plant, that presents a fight for another day. But if the a state is planning on demolishing a private residence, it should have to meet a higher public threshold standard than having gotten a majority of the legislature.
Unless Lawrence is (as the reference to the European Court of Human Rights would suggest) a blind stab at Feeding the Hungry and Clothing the Naked, then we must assume that its reasoning has meaning even if the parties involved were not members of a persecuted subgroup in society. If, as a default, the powers of the state are constrained, than substantive due process combined with the takings clause should demand that if the state wants to demolish my home, they had better get me to either sign a contract, or at least present a plausible public reason.
Maybe Lochner wasn't so crazy...