Land Register (Land on Line NZ) is a public record. Many similar websites use Land Registry Records in their tailored websites such as Property Guru, Coralogic etc used by many real estate Agents, professional firms.
If you owe money, your creditor can check on your property as well.
Your Creditor can be people suing you for negligent (very common for professionals who give advice as a form of living, building professionals etc), Companies directors - who can be personally liable for reckless trading, for misrepresentation, for personal guarantees etc.
Creditors or Liquidators (once they prove your debts) can attach a judgment order and registered on your personal property on Land Registry. It is called "prohibitory order" and stopping you from selling or transferring.