Every state gives construction businesses one of the strongest collection tools in commerce, and a large share of contractors either never use it or forfeit it by missing a step at the beginning of a job that was going perfectly well.
In this article
- The remedy most contractors have and never use
- How the process generally works
- Preventing the problem is cheaper than the remedy
- Your subcontractors can lien your customer
- What the paperwork is worth, in numbers
- When you do need to file
- Building the deadline calendar into the job
- Five mistakes that cost the most
- The five numbers to run collections on
- Frequently asked questions
The remedy most contractors have and never use
Mechanics lien rights exist in every US state, they are among the strongest collection tools available to anyone in construction, and a large share of contractors either do not use them or lose them by missing a deadline nobody told them about. The result is an industry with substantial unpaid receivables sitting next to a legal remedy specifically designed to prevent them.
The concept is straightforward: a party who supplies labor or materials that improve real property can, under state law, place a claim against that property. Because a lien clouds title, it interferes with sale and refinancing, which makes it a remedy owners and lenders take seriously in a way they do not take a fourth reminder email seriously.
Lien law is entirely state-specific and unusually technical. Deadlines, notice requirements, who is eligible, what must appear in the document, where it is filed and how it is served all vary — and small errors can void the claim completely. Nothing here is legal advice. Treat this as a map of what to ask about, and get the specifics from a construction attorney licensed in your state.
How the process generally works
Across most states, the sequence follows a recognizable pattern, with the details differing substantially:
1. Preliminary notice. Many states require a notice sent early in the project — often within a set number of days of first furnishing labor or materials — to the owner, general contractor and sometimes the lender. In several states, failing to send it forfeits lien rights entirely, regardless of how much is owed. This is the most commonly missed step, and it happens because it must be done at the start of the job, when nobody is worried about payment.
2. Notice of intent. Some states require, and many attorneys recommend regardless, a written notice that a lien will be filed if payment is not received within a stated period. A significant share of disputes resolve at this stage, because the owner's lender frequently becomes involved.
3. Recording the lien. Filed with the county recorder within a strict deadline, commonly measured from last furnishing labor or materials or from project completion depending on the state. The document typically must contain specific information, and errors can invalidate it.
4. Service. Most states require the recorded lien to be served on the owner within a set period.
5. Enforcement. A lien does not last indefinitely. Each state sets a period within which a foreclosure action must be filed or the lien expires. Missing that deadline generally ends the claim.
The single most expensive mistake in this area is not filing late. It is failing to send a preliminary notice at the start of a job that had no payment problem at the time.
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Preventing the problem is cheaper than the remedy
A lien is a recovery tool. Most unpaid balances are preventable by contract and process, and the contractors who rarely file are usually the ones with the best paperwork rather than the friendliest customers.
- A written contract on every job, including scope, price, payment schedule, change order procedure and what happens on late payment. Many states also impose specific content requirements on residential contracts — confirm what yours requires.
- Deposits and progress payments tied to milestones, so exposure never exceeds a manageable amount at any point.
- Invoicing on schedule, not when convenient. A payment schedule that is not enforced from the first milestone will not be enforced at the last.
- Stop-work rights, written into the contract and, where applicable, consistent with state requirements about notice before suspending work.
- Lien waivers exchanged properly. Conditional waivers on progress payments, unconditional only after funds clear. Signing an unconditional waiver against a check that has not cleared is a routine and serious error.
- Documentation as you go: daily logs, photographs, signed change orders, delivery tickets. Collection cases turn on records, not recollections.
Your subcontractors can lien your customer
This is the part general contractors sometimes discover the hard way. A subcontractor or supplier who is not paid may have lien rights against the owner's property even when the owner has already paid the general contractor in full. The owner then faces a claim for money they have already spent, and the relationship ends immediately.
Protecting against it is procedural:
- Collect lien waivers from every subcontractor and supplier with each payment, matched to the amounts paid.
- Track who has furnished materials or labor, including suppliers you did not deal with directly, since preliminary notices you receive are the mechanism that tells you who has rights.
- Do not release final payment without a complete set of unconditional final waivers.
- Treat an incoming preliminary notice as information, not an insult. It is a routine document sent by well-run companies, and reacting to it as an accusation is a sign of inexperience.
Owners on larger projects frequently require this documentation anyway. Providing it cleanly, without being asked, is a genuine competitive advantage with sophisticated clients.
What the paperwork is worth, in numbers
A specialty contractor with $2.4 million in annual revenue.
Before implementing a notice and waiver process:
- Annual write-offs of uncollectible balances: $47,000 (2.0% of revenue)
- Average days sales outstanding: 52
- Two disputes per year requiring an attorney: $18,000 in fees
- Lien rights lost on three jobs for missed preliminary notice: $61,000 of the write-off had no remedy available
After: preliminary notices sent on every job as a standard step, conditional and unconditional waivers exchanged systematically, notices of intent sent at day 45:
- Annual write-offs: $9,200 (0.4% of revenue)
- Average days sales outstanding: 34
- Attorney fees: $4,500
- Liens actually filed: 2, both resolved before foreclosure
- Cost of the process — a filing service and about three hours of administration per month: $7,400 annually
Net improvement: about $44,000 a year, plus 18 days removed from the cash cycle. Almost none of it came from filing liens. It came from sending notices on projects that were going perfectly well at the time.
A preliminary notice tells the owner and the lender that you exist and that your rights are preserved. On projects with financing, that alone changes how payment applications are treated. The lien is the backstop; the notice is the mechanism that means you rarely need it.
When you do need to file
Some balances go unpaid regardless of process. When that happens, a few principles apply:
Move on the calendar, not on the emotion. Deadlines are strict and unforgiving. Diary every project's key dates at the start, not when a problem appears.
Use an attorney or a specialized service. The document requirements are technical and vary by state; a defective lien is worse than none because it wastes the deadline and can create exposure.
Claim only what is genuinely owed. Inflated lien amounts are a serious problem in many states, with statutory penalties, and they hand the other side an argument.
Keep communicating. Filing is a legal step, not a hostile one, and many disputes settle after filing precisely because the lender now requires resolution.
Know the alternatives. On public projects, lien rights against the property generally do not exist; the remedy is usually a claim against a payment bond, with its own notice deadlines. On federal projects there is a separate framework. Confirm which applies before assuming.
Building the deadline calendar into the job
Every deadline in this area is measured from an event, and the events happen at the start and end of a job when nobody is thinking about collections. The fix is to make the dates part of project setup rather than part of a payment problem.
At job award, before the first day on site, record four things:
- The state and county where the property sits, because rules follow the property and not your office.
- The owner of record, the lender if any, and the general contractor, with mailing addresses suitable for formal service. Getting this wrong is a common reason notices fail, and the information is easiest to obtain at the start.
- The date of first furnishing labor or materials, which starts several clocks.
- The preliminary notice deadline for that state, entered as a calendar item with a reminder well before it expires.
Then, at substantial completion, record the date of last furnishing and calculate the lien filing deadline and the enforcement deadline. Both go in the calendar immediately, even on jobs being paid perfectly, because the cost of having dates you never use is zero and the cost of needing dates you never calculated is the entire balance.
On projects with several tiers — a general contractor, subcontractors, suppliers below them — keep a simple register of every preliminary notice received. It is the only reliable record of who has rights against the property you are working on, and it tells you exactly whose waiver you need before releasing final payment.
None of this requires software. A shared spreadsheet with a row per project and six date columns, reviewed at the same weekly meeting where the schedule is reviewed, is enough for most contractors and is far more reliable than the memory of whoever handles the invoices.
One more habit worth adopting: send the preliminary notice with a short, neutral cover message explaining what it is. Owners unfamiliar with construction sometimes read a formal notice as an accusation, and a single sentence — that it is a routine document required to preserve rights on the project, sent on every job, and not an indication of any problem — prevents an awkward phone call on day five. Contractors who do this consistently report that the notice stops being a source of friction entirely and becomes what it should be: a piece of standard project paperwork, filed alongside the certificate of insurance and the signed contract.
Five mistakes that cost the most
Skipping the preliminary notice on jobs that seem fine. It is required at the beginning, and by the time payment is a problem the opportunity has usually passed.
Signing unconditional waivers before funds clear. It releases the claim against a payment that may not arrive.
Not collecting waivers from subcontractors. It exposes the owner to double payment and destroys the relationship.
Assuming the rules are the same across state lines. Contractors working in two states routinely apply one state's deadlines to the other.
Filing without counsel. A technically defective lien wastes the only deadline you had.
The five numbers to run collections on
- Days sales outstanding, tracked monthly and by customer type.
- Percentage of jobs with a preliminary notice sent where the state requires or permits one. The target is 100%.
- Aged receivables past 45 days, reviewed weekly by name rather than in total.
- Write-offs as a percentage of revenue, which is the honest scorecard for the whole process.
- Waiver completeness at final payment, since the missing one is always discovered at the worst moment.
Getting paid in construction is a paperwork discipline, not a personality trait. The contractors who almost never lose money to non-payment are rarely the toughest negotiators — they are the ones who sent a routine notice at the start of a job that had no problem at all, and then never needed it.
The paperwork that pays for itself
Most construction write-offs are not collection failures — they are process failures at the start of the job. Send us your contract and payment process and we will show you where the exposure is.
Frequently asked questions
What is a preliminary notice and do I need to send one?
It is a notice sent early in a project — often within a set number of days of first furnishing labor or materials — to the owner, the general contractor and sometimes the lender, informing them that you are working on the property and preserving your lien rights. Many states require it, and in several of them failing to send it forfeits lien rights entirely regardless of how much is later owed. It is the most commonly missed step in the entire process, precisely because it has to be done at the start of a job when there is no payment problem to worry about. Requirements differ substantially by state, including who must receive it, what it must contain and how it must be served, so the specifics belong with a construction attorney licensed where the property sits. Practically, the notice usually does more work than the lien: on financed projects it changes how payment applications are handled.
What is the difference between conditional and unconditional lien waivers?
A conditional waiver releases your claim only once payment actually clears, while an unconditional waiver releases it immediately and unconditionally. The correct practice is to provide conditional waivers with progress payment applications and unconditional waivers only after the funds have cleared your account. Signing an unconditional waiver against a check that has not yet cleared is a routine error with serious consequences, because it releases the claim against a payment that may never arrive. The same logic applies in reverse: a general contractor should collect waivers from every subcontractor and supplier with each payment, matched to the amounts paid, and should not release final payment without a complete set of unconditional final waivers. Form requirements for waivers are set by state law in many jurisdictions, and using a non-compliant form can undermine the protection entirely.
Can a subcontractor place a lien on my customer's property?
In many circumstances yes, and this is where general contractors are most often caught out. An unpaid subcontractor or supplier may have lien rights against the owner's property even when the owner has already paid the general contractor in full, which leaves the owner facing a claim for money they have already spent and generally ends the relationship. Protection is procedural rather than legal: collect lien waivers from every subcontractor and supplier with each payment, keep a register of everyone who has furnished labor or materials including suppliers you did not deal with directly, treat incoming preliminary notices as the mechanism that tells you who holds rights, and never release final payment without a complete set of unconditional final waivers. On public projects the framework is usually different, with claims made against a payment bond rather than the property.