Fundamentals · Lesson 1 · 6 min
What Is a Lien?
A plain-English definition of a lien, the legal theory behind it, and why creditors care.
Overview
A lien is a legal claim against an asset that secures payment of an underlying obligation.
Liens convert an unsecured promise to pay into a secured interest — they elevate the creditor above ordinary trade debt.
Liens can be created by statute (mechanic's, tax, judgment), by contract (mortgage, UCC-1), or by operation of law.
Key Concepts
- • Secured vs. unsecured debt
- • Perfection — the act of making a lien enforceable against third parties
- • Priority — who gets paid first when multiple claimants exist
- • Foreclosure — the judicial or non-judicial sale of the encumbered asset
Common Mistakes
- • Treating a 'demand letter' as a lien — it is not.
- • Assuming a contract clause alone creates a lien without statutory perfection.
- • Forgetting that liens attach to property, not to people.
Practical Examples
Trade creditor with no lien
A supplier ships $80,000 of materials on net-30 terms. Without a UCC-1 or a statutory mechanic's lien, the supplier is just one more unsecured creditor if the buyer files bankruptcy.
Subcontractor with a properly filed lien
The same supplier, working on a commercial build, files a timely mechanic's lien. Now the claim attaches to the project itself and must be cleared before the owner can sell or refinance.
Downloadable Resources
Educational use only. Not legal advice. Lien rules vary by state — consult licensed counsel.