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Security and structure

Loan security types: mortgages, caveats and GSAs

Lenders protect themselves with security they can call on if a loan is not repaid. In property finance that usually means a registered mortgage over land, sometimes a caveat instead, a general security agreement over a company's other assets recorded on the PPSR, and personal guarantees from people standing behind the borrower. Each gives the lender different rights.

Privet EditorialLast reviewed 12 October 2026

Key takeaways

  • A registered mortgage is recorded on the land title and generally gives the lender a power of sale after default and proper notice.
  • A caveat warns others of a claimed interest and blocks most dealings, but on its own it is a weaker form of security than a registered mortgage.
  • A general security agreement covers personal property such as equipment, receivables and shares, and is registered on the PPSR.
  • A personal guarantee or director's guarantee makes an individual answerable for the loan, often backed by security over their own assets.
  • Cross-collateralisation and all-moneys clauses can tie several properties and loans together, making it harder to sell or refinance one on its own.

Part 1 of 12 · 1 min read

What security is for

Security is the set of rights a lender holds so it can recover its money from something other than your promise to repay. If the loan runs to plan, the security never comes into play. If it does not, the type of security decides what the lender can do, how quickly, and which of your assets are exposed.

Property lenders rarely rely on a single document. A typical package might pair a mortgage over land with a security interest over a company's other assets and a personal promise from its directors. Knowing what each piece does lets you see the full reach of what you are signing, rather than focusing only on the property named in the offer.

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Sources, citation and review history
Cite this page
APA
Privet. (2026, 12 October). Loan security types: mortgages, caveats and GSAs. https://privet.com.au/learn/security-and-structure/security-types
Harvard
Privet (2026) Loan security types: mortgages, caveats and GSAs. Available at: https://privet.com.au/learn/security-and-structure/security-types (Accessed: 12 October 2026).

Review log

VersionDateReviewerWhat changedFacts re-verified
112 October 2026Privet EditorialPublished at owner's request (R. Goodwin, 12 Oct 2026); figures not yet re-verifiedNo