They may close streets but it makes sense to save money to just film the cars that are there if they're just doing a short wide shot of the street.
Seems like overkill to hire 20 cars just to fill a street for a TV show if its a single establishing shot. Although no doubt they would do that for any scene being taken from multiple angles for continuity.
That’s true for the filmings that happened in my street. But they didn’t go to the extent of asking to remove the cars from the driveways.
Side note: it’s actually very annoying having a filming crew at your street. When they’re filming, you can’t go outside or leave your own house, and you can’t come home. At least they don’t close down for long.