30 days x 12 h/day x 5 US$/h= 1,800 US$ month x 12 = 21,600 US$/year
Typical rent 5% of value.
21,600/0.05= 432,000
Size of a parking spot 5x2.5 m = 12.5 sqm, let's make it 15.
432,000/15= 28,800 US$/sqm
Cost of a house in Copenhagen (centre):
https://www.numbeo.com/cost-of-living/in/Copenhagen
47,555.60 kr = +/- 7,500 US$/sqm
That is for an apartment, not a full house of multiple storeys. If you have four storeys (counting the ground-floor), then interestingly the costs would be roughly on par. I am not sure, how many storeys the houses are supposed to have in Copenhagen.
There is NO market in the world AFAIK where 1 sqm is considered multi-storey, a house that is 100 sqm in plan and is 2 storeys is a 200 sqm one.
The opportunity cost of 1 sqm of street parking space is not 1 sqm of "living unit", but 1 sqm of land.
If 1 sqm of apartment is worth $7.5K/month, and average building height is 4 stories, that suggests 1 sqm of land is worth approximately 4 * 7.5 = $30K/month (minus value of the building).
16 will be 4 times that.
My note was not about "opportunity cost", it was about the (extremely high) "rent" that a parking space at 5 US$/hour represents compared to its cost.
If you buy a 50-55 sqm apartment/flat/living unit in Copenhagen, you spend roughly 400,000 $, you can possibly rent it for 5%/year, i.e. around 20,000 $/year.
If you can manage to extort 5 $ /hour (for 12 hours/day) for a parking space which is 1/4th of area (and is not a building) you get more or less the same.