A document arrives referring to work at one of your properties, from a company you have never contracted with, warning that they may place a lien if they are not paid. Most operators either ignore it or treat it as a threat. It is neither. It is a preliminary notice, and in states that require one, it can be a condition of preserving a subcontractor's or supplier's lien rights against a property you manage, even after you have paid your contractor in full.

This article describes general mechanics lien concepts and cites California provisions where noted. It is not legal advice. Mechanics lien law is state law, the notice requirements and deadlines vary considerably, and the consequences of missing them fall on different parties in different states. Take any lien or lien notice to counsel promptly.

The Exposure Is Having to Pay Twice

Start with why this matters, because the mechanism is not obvious.

A mechanics lien can be a claim against the property itself, made by a contractor, subcontractor, labourer or supplier who provided work or materials that improved it. Because it attaches to the property rather than to the person who owes the money, it can be asserted by someone you never hired and never paid.

The scenario that costs money is straightforward. You hire a contractor. The contractor hires a subcontractor. You pay the contractor in full. The contractor does not pay the subcontractor. The subcontractor liens the property. The debt is between the contractor and the subcontractor. The lien is against the asset you manage.

What a Preliminary Notice Actually Is

This is the document operators most often misread, and it is worth understanding precisely. California's Contractors State License Board, in guidance written for property owners, describes the preliminary notice as required from subcontractors and suppliers where there is a chance they may need to file a lien. The notice states that the sender has provided, or will provide, goods and services to improve the property and could file a lien claim if they are not paid.

Two points from that guidance matter operationally.

1. It is a precondition, not an accusation. CSLB states that if subcontractors and suppliers do not provide the notice, they lose the right to file a lien. Sending it protects their position; it does not indicate a dispute.

2. And it does not come from everyone. CSLB notes the notice is not required from labourers or from the direct contractor. In California, commentary on Civil Code § 8200(e) describes claimants with a direct contract with the property owner, and labourers, as not needing to file one.

In California, that means the preliminary notices you receive generally identify parties beneath your direct contractor in the payment chain.

Treat It as an Early Warning System

The most valuable thing in the CSLB guidance is a single practical instruction.

It advises saving preliminary notices and noting the date received, so you can keep track of who is owed money and when they are paid.

Read that as a list you did not have to build. A preliminary notice can give you the identity of a party working on your property beneath your contractor, what they are supplying, and that they may have lien rights if they are not paid. That is visibility into a subcontractor chain you would otherwise have to ask for.

And it has a timing dimension. CSLB describes the California notice as deliverable in person or by certified, registered or first class mail before work begins or supplies are delivered, and up to 20 days thereafter. A notice arriving weeks into a job is telling you when that party started, which is information about a project you may not be tracking closely.

The instinct to file preliminary notices away is the wrong one. They can provide an early view of who may have lien rights on the property.

Two Tools That Actually Prevent the Problem

CSLB's guidance names both, and they are operational rather than legal.

Joint checks. CSLB describes paying with joint checks, endorsed by both parties, as the simplest way to prevent liens and ensure subcontractors and suppliers are paid. The guidance recommends comparing the contractor's materials or labour bill against the payment schedule in your contract and against the preliminary notices you have received, confirming the work was done as described, and making the cheque payable to both the contractor and the subcontractor or supplier.

Lien releases. CSLB describes lien releases as allowing property owners to track when potential lien claimants have been paid, and advises obtaining a signed conditional release from possible lien claimants before making a payment. California publishes conditional and unconditional waiver and release forms for this purpose.

The sequence in that second point is the part to notice. The conditional release is obtained before payment, not after. An operator collecting releases after the fact is collecting them at the point they have least leverage.

Both tools depend on knowing who the potential claimants are, which returns you to the preliminary notices.

Notice Requirements Vary Enormously

Worth stating plainly, because this is a state-law area with real variation.

Preliminary notice requirements differ. Many states require some form of preliminary notice to preserve lien rights, but the triggers, deadlines, content and delivery methods differ, and some states require them only for certain project types or above certain contract values.

Some states also require a separate notice of intent or notice of nonpayment before a lien can be filed. Whether one is required, who must send it, and when it must be sent varies by state and project type.

And some states use a notice of commencement. The document and its legal effect vary by state; in some jurisdictions it identifies the project, owner and contractor and interacts with other notice requirements. Check the state's rules before assuming what a notice of commencement triggers.

The practical consequence for a multi-state portfolio. The document that arrives in California is not the document that arrives in Florida, the deadline is not the same, and the consequence of you ignoring it is not the same either. Establish the position in each state where you manage property.

The Third-Party Manager Question

One issue specific to managing property you do not own, and worth raising with your client rather than discovering later.

When you authorise work on a property, the lien exposure attaches to the property. If you are a third-party manager, that is your client's asset, not yours.

Three questions follow, and they belong in the management agreement rather than in an email during a dispute.

1. Who is authorised to commit the owner to work, and up to what value.

2. Who receives and acts on preliminary notices — you, the owner, or both.

3. And what your obligations are if a lien is recorded. Notification timing, who instructs counsel, and who bears the cost of resolving it.

A lien recorded against a client's property while you were managing it is a difficult conversation, and it is considerably easier where the agreement already says who was responsible for what.

What to Put in Place

Six things, most of which sit in your existing vendor and work order process.

1. Do not discard preliminary notices. Record the sender, the date received, the property and the work described.

2. Reconcile notices against your work orders. A notice from a party you cannot connect to a work order is worth a call to your contractor.

3. Ask contractors to identify their subcontractors and suppliers before work starts, so the notices confirm what you already know rather than telling you something new.

4. Use conditional lien releases before payment, and unconditional releases after, following the sequence your state's forms contemplate.

5. Consider joint cheques on jobs where a subcontractor chain exists and the amounts justify it.

6. And hold all of it against the property and the vendor. Where preliminary notices, releases and payments sit on the vendor record alongside the work orders, the reconciliation is a report rather than a search through email.

Where This Sits Alongside Your Other Contractor Exposures

The same contractor relationship generates several distinct risks, and they are worth seeing as a set.

Safety. Where you have supervisory authority over a worksite, you may be a controlling employer under OSHA's multi-employer citation policy, covered in our guide to OSHA's multi-employer worksite policy.

Insurance. Whether a vendor's liability policy reaches you depends on an endorsement rather than the certificate you collected.

Workers' compensation. In some states, an uninsured contractor's injured worker can become the hiring party's problem.

And payment. A lien can attach to the property because of money owed between two parties who are not you.

The common thread is the subcontractor chain. In each case the exposure comes from someone one step further away than the party you actually hired, and in each case knowing who they are is most of the answer.

Conclusion

Mechanics liens exist because people who improve property should be able to secure payment for it. The consequence for whoever manages that property is that paying your contractor is not always the end of the matter.

Three things worth carrying away.

1. A preliminary notice is a precondition, not a complaint. In California, CSLB guidance states that subcontractors and suppliers who do not provide one lose the right to file a lien. Receiving one means someone is protecting their position, not that something has gone wrong.

2. It is also the best visibility you get into the subcontractor chain. CSLB's own advice is to save notices and record the date received so you can track who is owed money and when they are paid.

3. And the preventive tools work before payment, not after. Conditional releases obtained before a payment, and joint cheques where a subcontractor chain exists, are what CSLB describes as the practical answers. Both require knowing who the potential claimants are, which is what the notices tell you.

Frequently Asked Questions

1. Can a subcontractor lien my property if I already paid the contractor?
That is the core risk mechanics lien law creates. The lien attaches to the property in respect of work or materials that improved it, so a subcontractor or supplier who was not paid by your contractor may be able to assert a claim against the property even though you paid your contractor in full. The rules and any defences vary by state.

2. What is a preliminary notice?
A notice sent by a subcontractor or supplier to preserve the right to file a mechanics lien later. California's Contractors State License Board describes it as stating that the sender has provided or will provide goods and services improving the property and could file a lien if not paid, and notes that subcontractors and suppliers who do not provide the notice lose the right to file a lien.

3. Do I need to respond to a preliminary notice?
Receiving one does not necessarily require a response, but it is worth recording. CSLB advises saving preliminary notices and noting the date received so you can keep track of who is owed money and when they are paid. Reconciling notices against your work orders and payment records is the practical use.

4. How do I prevent a mechanics lien?
CSLB describes joint cheques, endorsed by both the contractor and the subcontractor or supplier, as the simplest method, and recommends obtaining a signed conditional release from possible lien claimants before making a payment. Both depend on knowing which parties could claim, which is what preliminary notices tell you.

5. Who receives preliminary notices when a third party manages the property?
That depends on your arrangement and is worth settling in the management agreement rather than during a dispute. The lien attaches to the property, which is the owner's asset, so who receives notices, who acts on them and who bears the cost of resolving a recorded lien are all questions to agree in advance.