Local heating contract and boundary construction

The second option would be to take advantage of a one-time penalty payment. With the fixed rate of 50€ / sqm (approx. 160 sqm heated area), this would be more economical over > 15 years

The forced district heating promotion will also be about wanting to save individual house heating rooms. Presumably, the municipal council has thought for a long time about how to manage to place single-family houses on mini parcels in practice.
On the topic "Basement owner builds next to non-basement owner in an actual terraced house," you can—if you have a weak heart under medical supervision—read the thread by ;-)

That this is an option, you have misunderstood. The municipality is busting its ass to build a district heating supply for the developability of the area in favor of single-family houses, which unfortunately only becomes economically feasible with a connection and usage obligation. And then a smart aleck comes along and is so antisocial as not to want to understand this and would rather step out of line. The exemplary form of timely announcement of the penalty amount – by the way very considerate not to demand it every thirty or even every ten years – should not lead to the misunderstanding that this is a surcharge like for an additional storey. Such deliberate misunderstanding is to blame if on the next occasion a) thicker fence posts are waved or b) the development area is then only built with multi-family houses by the municipal housing association, so that the individualistic dimwits have to look for building plots for their me me me single-family houses elsewhere. I think you simply haven’t heard a shot here. The municipality wanted to be nice – this is not meant as an affront against heating cost bargain hunters!