Mechanic's Lien
A mechanic's lien is a specific, involuntary lien filed by a contractor, subcontractor, or supplier who furnished labor or materials to improve a property and was not paid. It attaches only to the improved property and gives the claimant the right to force a sale to collect the debt.
Mechanic's liens sit in the Encumbrances, Liens, and Title Transfer section, where the exam tests whether you can classify a lien as specific or general and voluntary or involuntary. Questions usually describe a tradesperson who was not paid, then ask what type of lien results.
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A lien created by the work itself
A mechanic's lien is a specific, involuntary lien that a contractor, subcontractor, or materials supplier files against a property they improved but were not paid for. The word mechanic here is old-fashioned: it means anyone who furnishes labor or materials to build or repair a structure, not just an auto mechanic. The lien is the tradesperson's security. Instead of chasing the owner personally, the claimant ties the debt to the property itself and can force a sale to collect.
Specific, not general
Every lien question turns on two classifications. The first is scope. A specific lien attaches to one identified property, while a general lien attaches to everything the debtor owns. A mechanic's lien is specific. It reaches only the parcel that was improved, so a builder who remodels one duplex cannot reach the owner's other buildings through it. A judgment lien from a lawsuit is the general lien in the same question, and exam writers love to place the two side by side.
Voluntary or involuntary
The second classification is consent. A voluntary lien exists because the owner agreed to it, which is what a mortgage is. A mechanic's lien is involuntary: the owner never signed for it, and the law imposes it when someone performs work and is not paid. That fact makes it a favorite distractor. A question may describe a homeowner who never hired the subcontractor and ask whether a lien can still attach. It can, because the subcontractor's contract was with the general contractor, not with the owner.
A concrete example
Suppose Marla hires a general contractor to add a second story to her house. The general contractor subcontracted the roofing, and the roofing company is never paid. The roofer can file a mechanic's lien against Marla's house even though Marla did not hire the roofer and may have already paid the general contractor in full. This is why careful buyers demand lien waivers at closing: a title search can reveal a recorded mechanic's lien, and an undisclosed one clouds title until it is resolved or bonded over.
How a mechanic's lien ends
The lien is discharged when the underlying debt is paid and the claimant records a satisfaction. If the owner refuses to pay and the lien is valid, the claimant can sue to foreclose, which forces a sale of the property to satisfy the debt. State law controls the details: the deadline to record the lien after the work finishes, the deadline to file suit to enforce it, and whether a homeowner's published notice can cut off unpaid subcontractors. Where states differ, the exam stays on the general rule and tests the classification.
How this appears on the exam
Mechanic's lien questions almost always ask one of two things: classify the lien, or name who can file it. For classification, answer specific and involuntary. For who can file, remember that anyone who contributed labor, services, or materials that improved the property can claim, including subcontractors and suppliers the owner never met. Keep the specific-versus-general axis in front of you and the distractors drop away.
Memory trick
SWIM
Before you answer any mechanic's lien question, run the SWIM test.
- S
Specific lien: it attaches only to the one improved property, not to everything the debtor owns
- W
Worker or supplier: a contractor, subcontractor, or materials supplier who improved the property and went unpaid
- I
Involuntary: the owner did not agree to it, the law creates it when work is performed and payment is missed
- M
Materials and labor: the claimant must have furnished labor, services, or materials that improved the property
Screenshot this: SWIM is how you'll remember mechanic's lien on exam day.
How the exam tricks you on this
The classic distractor is specific versus general. A mechanic's lien is a specific lien: it attaches only to the one property that was improved, never to the debtor's other assets. A judgment lien is the general lien that appears in the same question set, attaching to everything the debtor owns. If the scenario has the claimant reaching for unrelated property, that answer is wrong.
Two more patterns to watch:
- Involuntary, not voluntary. The owner never agreed to a mechanic's lien; the law creates it when labor or materials improve the property and payment is missed. A mortgage is the voluntary lien in the same question because the owner signed for it. Watch for a distractor that calls a mechanic's lien voluntary.
- Recording deadlines and relation back. Many states give the claimant a limited window to record the lien, and mechanics' liens often relate back to the start of the work. That relation back can push a mechanic's lien ahead of a mortgage recorded after the work began, so read whether the question tells you when the mortgage was recorded.
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Related terms
Title Insurance
Title insurance protects a buyer or lender against losses from defects in the title that existed before the policy date, such as forged deeds, undisclosed liens, or gaps in the chain of title. Unlike other insurance, it covers past events and is paid for with a one-time premium at closing.
Read definitionEasements
An easement is a nonpossessory right to use another person's land for a specific, limited purpose: a shared driveway, a utility line, access to a road. The holder can use the land but never owns it. Easements appurtenant benefit a neighboring parcel and transfer with the land; easements in gross benefit a person or company instead.
Read definitionWarranty Deed vs. Quitclaim Deed
A warranty deed transfers ownership and promises the title is clean, so the buyer can sue the seller if a claim or defect surfaces later. A quitclaim deed makes no promises at all: it hands over whatever interest the grantor happens to have, which may be nothing. Use the test of purpose, a deed for money in a normal sale is almost always a warranty deed, and a deed used to clear up a title problem is almost always a quitclaim.
Read definitionEscrow
Escrow is a neutral third-party arrangement that holds money and documents on behalf of a buyer and seller until every condition of the sale contract has been met. The escrow agent has no stake in the transaction: they simply follow the escrow instructions both parties signed, releasing funds and title only when every condition clears.
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