Hello,
MyHammer is an option, but I recommend looking very closely when reviewing offers, especially for a demolition...
We also thought that not much could go wrong with a demolition, but we were still more than surprised by which companies (building cleaners, tilers, security service...) submitted offers for the demolition of the old single-family house.
As long as everything goes well, the low price usually paid off. But if problems occur, such as damage to third-party property (excavator or truck hits the neighbor's building), it quickly becomes unpleasant if the company possibly does not have liability insurance for these activities.
My advice: make an appointment with two or three demolition companies from the region and have an offer made.
I would even consider having only the foundation removed by one company. Such a "small" wooden hut can easily be taken apart on a Saturday during a demolition party with a few friends...
Regards,
Dirk