Vacant Home with exemptions owes a lot in taxes

[Itzel Salazar]

There’s a house around an area I really, really like. The owner owes $33K in taxes but the account is on deferral & the exemption is that she’s over 65 so she only pays $300 towards the debt. I don’t think it’s ethical to contact her but the house also looked vacant with overgrown grass & no trash bins in sight. Is it legal/ethical to get in contact with her via cold calling? Or maybe direct mail less harsh?

TIA