This happens a lot: I apply for a job and they ask for my complete address. Why? I would understand if they just want to know what city/town I'm in: That has bearing on how easily I can get to the office.
But why do they need to know my street address?
The only thing I can think: Indeed/LinkedIn/take-your-pick is building a profile of me based on this info, using my street as a proxy for my income, credit score, or, ultimately, for my social class.
From now on, when they ask me, I'm just going to put a rich person's address. For this one I used a Brooklyn townhouse where Maggie Gyllenhaal and one of the Saarsgaards lives.
The charitable explanation is HR knows they'd need it eventually if you do join up, so might as well as for everything now since they definitely need to know your state of residence. Also some companies send swag and other stuff to prospective hires.
Your explanation is more likely.
I mean, we all know even if that's true that HR's gonna ask you to fill out your address again multiple times when onboarding as a new hire.