Old European towns, like Paris, have a large number of historical architecture and neighbor. Small street, old building, space is occupied and city boarder are not getting bigger. In Paris and Parisian area the need for housing is more than present, it became part of public policies.
In the same time, Urban Agriculture is growing every year. But garden needs spaces. Rooftops, green buildings are one solution but what can we do in an historical city with old building which can’t be architecturally changed or with new construction nearby architectural heritage protected by legislation? Will be able to adapt local city plan without destroying historical heritage?
Urban Agriculture Book Series; Chapter 1: Innovative Commercial Urban Agriculture in the Paris metropolitan area).
This question will pose a significant concerns to policy-makers, as the urban population grows in the years to come. Maybe this will lead us to new framework of urban planning? (just like some years ago there was less demand on parking spaces and now we have “underground cities”). If urban agriculture is to scale up, the scarcity of resources would indeed necessitate the shift of policy-making (regulation).
I think that’s a really good question. Indeed, the growth of population rises two enormous problems : do we have enough resources and space to feed everybody ? And do we have also enough place to offer a decent house to everybody ? It’s not the case today and I think it won’t be the case in the future. But your question needs, in my opinion, to be a little modified since it’s always possible to add plants on a rooftop. It’s also always possible to build buildings with urban farms on the top. So building houses will solve both the problem of food and the problem of housing. But you are right to ask the question about the legal framework of construction.