As my Chief Arbiter character, I advise against parking caps at Junker bases in house space as well.
Unlike the LR, Congress and independents will enforce it without anyone being able to raise a stink. Junkers would gladly off a ship to maintain their quasi-legality and to serve as an example to the rest.
As Rudo the slacker Discovery player, do what you bloody like. Just keep the RP in mind that Junkers need to maintain the image of a salvage operation, and unlawful capital ships loitering in their space/using their bases as a home port is very, very bad for that. They'd take offense to it and will kill any ship without hesitation if it means maintaining their clearance to land on planets.
We recently had issue with some Corsairs using Trafalgar this way and it's getting hairy up there.