I think that because these are not permenant shelters the city can't do anything. Hell, like afungusamongus said...they're not much more than people kennels...
I'm not sure about temperature because of insulation; I can't imagine it having very much and wood isn't very insulative. Against the elements though, it looks great. Wind, rain, even small floods because it's off the ground by what...6 inches?
But I can't help thinking they are just people kennels...