Legally it’s still the exception, the municipality has to make it illegal (although I imagine it happens far too often). But hanging in front of one’s house is legal and actually quite common, at least in Amsterdam, much more so than in for ex. Belgium.
Like you see people put benches or even picknick tables in front of their house, which has no garden or clear separation with the pavement. The houses in this street have a back yard, so if you sit down in the front it’s also to be able to hang out in a social space, do people watching and say hi to your neighbours:
