We also bought our plot of land through the municipality. From our perspective, the price is a moderate market price. The development costs of the plot are included in the price (except for around €11/m2: that is the still payable construction cost subsidy to the municipal utilities). But street, lighting, etc. are included: and these costs have certainly not decreased in recent months/years.
Before that, we were also able to gain some experience in the search for a building plot. We encountered the following: - Municipality sells only to locals (local models of various kinds – partly quite "unconventional"); - Municipality markets via developers - Municipality markets via savings banks - Municipality distributes the plots by lottery: among others, there were also models where locals basically had double entries; - Municipality doesn’t sell at all --> apparently reserved for later.
Regarding the "building obligation": I actually don't see that as necessarily negative. Eventually, the building plots are meant to be developed. Otherwise, there are these endless gaps. For us, it is a moderate 5 years – that should be manageable. Clause regarding: Whoever does not build themselves must return it to the municipality (all costs borne by the buyer): this is a quite common clause. I see no disadvantage in it – except if one (for whatever reasons) cannot or does not want to build.
I definitely do not see buying from the municipality as disadvantageous. The prices are certainly not higher than when buying from private parties.