Yes, it is a law in the Madrid community that after a certain date (not sure if it is the 1 of may) buildings that have community heating (not in the case that you have an individual heating) putting back the heating is possible but you have to do some administrative stuffs. They wanted to dissuaded the people from consuming abuse. So as it is the case in our building, everybody was freezed.
It is not that you can not do it, it is that they put it complicated in order to save energy.
Never underestimate what you can learn in a photography forum!
There are local laws in Mallorca about the times when you are allowed to burn open fires in the countryside; if you disobey and burn out of season, you tend to find that fire-fighter planes or helicopters come around and drop people's swimming pool contents on your head, or they scoop up the Bay of Pollensa and dose you with salt water instead... very wise!
I do not think "fredjeang" was referring to that kind of "heating" in his post... but I know the case of someone, who lives in a flat, and celebrated a BBQ in the middle of his living room.