Preliminary Notice vs Mechanics Lien: What Subcontractors Need to Know
If you're confusing a preliminary notice with a mechanics lien, you're not alone — and that confusion can cost you tens of thousands of dollars in unpaid work. Understanding the difference between preliminary notice vs mechanics lien is the single most important thing a subcontractor can do to protect their right to get paid on any construction project.
What Is a Preliminary Notice and Why Does It Matter?
A preliminary notice is a formal document sent early in a project that preserves your right to file a mechanics lien later if you don't get paid. It is not a threat, not a lawsuit, and not an indication that anything is wrong — it's a routine legal step required in most states before you can enforce lien rights.
Think of it like a seat reservation. If you don't send the preliminary notice on time, you lose your seat at the table when it comes time to collect payment. No notice, no lien rights. It's that simple.
Here's what makes the preliminary notice critical in each LienFlash state:
- Florida: Called a "Notice to Owner" (NTO). Required by Fla. Stat. § 713.06(2)(c) for subcontractors and material suppliers who don't have a direct contract with the owner. Must be served before commencing work OR within 45 days of first furnishing labor or materials.
- California: Called a "Preliminary Notice" (formerly "20-Day Prelim"). Required under Cal. Civ. Code § 8204 for subcontractors and suppliers. Must be served no later than 20 days after first furnishing labor, services, equipment, or materials. Late service only protects work performed in the 20 days prior to service and forward.
- Arizona: Called a "Preliminary 20-Day Notice." Required under Ariz. Rev. Stat. § 33-992.01 for all subcontractors and suppliers. Must be served within 20 days of first furnishing labor or materials.
- Nevada: Called a "Preliminary Notice." Required under Nev. Rev. Stat. § 108.245 within 31 days of first furnishing labor or materials.
- Washington: Called a "Preliminary Notice to Owner." Required under RCW 60.04.031 for subcontractors not in direct contract with the owner. Must be served no later than 10 days after first furnishing labor or materials.
- Oregon: Called a "Notice of Right to a Lien." Required under ORS 87.021 for subcontractors and suppliers. Must be delivered no later than 8 days after first furnishing labor or materials.
Missing these windows doesn't mean you're late — it means you're out. Oregon's 8-day window is the tightest in the country. If you start work on a Monday and don't send your notice by the following Tuesday, you've already lost lien protection for those first days.
What Is a Mechanics Lien and When Do You File One?
A mechanics lien is a legal claim recorded against a property's title that forces the issue of nonpayment. Filing a mechanics lien means you are putting the world on notice — the owner, any lender, any future buyer — that money is owed to you for work you performed on that property.
A mechanics lien doesn't automatically get you paid. What it does is cloud the property title, which gives you enormous leverage. Owners can't sell or refinance a property with a lien on it without resolving the debt first. That's why a properly filed mechanics lien almost always results in payment or a settlement.
Here are the filing deadlines by state:
- Florida: Fla. Stat. § 713.08 — Must be filed within 90 days of the last day you furnished labor or materials.
- California: Cal. Civ. Code § 8412 — Must be recorded within 90 days of project completion if no notice of completion was filed. If a notice of completion was filed, subcontractors have 30 days from recording of that notice.
- Arizona: Ariz. Rev. Stat. § 33-993 — Must be recorded within 120 days after substantial completion of the entire project OR within 60 days after a notice of completion is recorded.
- Nevada: Nev. Rev. Stat. § 108.226 — Must be recorded within 90 days after the last day of furnishing labor or materials.
- Washington: RCW 60.04.091 — Must be filed within 90 days of the last day of furnishing labor or materials.
- Oregon: ORS 87.035 — Must be filed within 75 days of the last day of furnishing labor or materials.
Critical point: you cannot file a valid mechanics lien in most states unless you already sent a compliant preliminary notice. The preliminary notice is the prerequisite. The mechanics lien is the enforcement tool.
What's the Difference Between a Preliminary Notice and a Mechanics Lien?
The core difference is timing and purpose. A preliminary notice is sent at the beginning of a project to preserve your rights. A mechanics lien is filed at the end of a project — or when payment breaks down — to enforce those rights.
Here's a side-by-side breakdown:
| Preliminary Notice | Mechanics Lien | |
|---|---|---|
| When filed | At or near project start | After nonpayment occurs |
| Purpose | Preserves lien rights | Enforces lien rights |
| Who receives it | Owner, GC, lender | County recorder's office |
| Effect | No immediate impact on title | Clouds property title |
| If missed | You lose lien rights | You lose enforcement ability |
| Routine? | Yes — send on every job | No — only when unpaid |
If you skip the preliminary notice, filing a mechanics lien later is worthless. The lien will be invalid and unenforceable. The GC's attorney will get it dismissed, and you'll be left chasing payment through collections or small claims court — both of which are slower, more expensive, and less effective.
Do You Always Need to Send a Preliminary Notice?
Not always — but the exceptions are narrow and state-specific, and assuming you're exempt is one of the most expensive mistakes a sub can make.
In Florida, if you have a direct contract with the property owner, Fla. Stat. § 713.05 applies and no NTO is required. But if you're a sub hired by a GC, you need the NTO.
In California, direct contractors (prime contractors with a direct contract with the owner) are exempt from the 20-day preliminary notice requirement under Cal. Civ. Code § 8200(e). Everyone below the prime — subs, sub-subs, suppliers — must serve the notice.
In Washington, a contractor with a direct contract with the owner is not required to serve a preliminary lien notice under RCW 60.04.031, but anyone without that direct relationship must send it within 10 days.
The safest rule: send a preliminary notice on every project, no exceptions. It costs almost nothing compared to the risk. With LienFlash, filing a single notice costs $24.99. A single unpaid invoice for even $5,000 makes that math obvious.
How Are Preliminary Notices Delivered?
Delivery method matters legally — sending an email or handing someone a copy doesn't cut it in most states.
- Florida: Fla. Stat. § 713.18 requires service by certified mail with return receipt requested, or personal service, or by a process server. Certified mail is the standard.
- California: Cal. Civ. Code § 8106 allows first-class mail with certificate of mailing, registered or certified mail, or personal delivery. Certificate of mailing from the post office (not just a receipt from your printer) is required for mail service.
- Arizona: Ariz. Rev. Stat. § 33-992.01(F) requires certified mail, return receipt requested, or personal service.
- Nevada: Nev. Rev. Stat. § 108.245 requires certified mail or personal delivery.
- Washington: RCW 60.04.031 requires mailing by certified or registered mail, or personal delivery.
- Oregon: ORS 87.021 requires personal delivery or first-class mail.
Every notice LienFlash sends goes out via USPS Certified Mail. You get a Certificate of Mailing PDF automatically. That certificate is your legal proof of service — keep it for every project, forever.
What Happens If You Skip the Preliminary Notice and Don't Get Paid?
Without a valid preliminary notice on file, your mechanics lien will be challenged and almost certainly invalidated. Here's what that looks like in practice:
You complete $47,000 worth of HVAC work on a commercial build. The GC goes silent after month two. You never sent a preliminary notice. You file a mechanics lien anyway. The property owner's attorney files a motion to discharge the lien — and wins, because you didn't comply with the statutory notice requirements. Now you're in breach of contract litigation with no lien leverage, no secured claim, and legal fees mounting.
This happens thousands of times every year. According to data from construction payment research firm Levelset, roughly 53% of subcontractors reported experiencing late payments on projects, and nonpayment remains one of the top financial risks in construction. A preliminary notice is the cheapest insurance you'll ever buy against that risk.
Missing the preliminary notice deadline doesn't just weaken your position — in states like California, Arizona, Oregon, and Washington, it completely eliminates your right to lien. You cannot cure a missed preliminary notice by filing it late and expecting full protection.
How Does LienFlash Handle Preliminary Notices?
LienFlash sends compliant, attorney-reviewed preliminary notices in Florida, California, Arizona, Nevada, Washington, and Oregon — via USPS Certified Mail — in under 2 minutes.
You enter the project details, verify the recipient addresses, and submit. LienFlash generates the notice using state-specific templates reviewed by construction attorneys, dispatches it through USPS Certified Mail, and sends you a Certificate of Mailing PDF as your proof of service.
Pricing is straightforward:
- Pay-per-notice: $24.99 per notice
- Pro plan: $49/month — includes 3 notices per month
- Pro Annual: $399/year — best value for subcontractors running multiple projects simultaneously
There's no legal training required, no need to look up county recorder offices, no guessing at which form to use. The system handles state-specific compliance so you don't have to.
Frequently Asked Questions
Is a preliminary notice the same as a mechanics lien?
No. A preliminary notice is sent early in a project to preserve your right to file a mechanics lien later. A mechanics lien is a legal claim recorded against a property's title when you haven't been paid. One is a prerequisite; the other is the enforcement action. Skipping the preliminary notice makes any later mechanics lien invalid in most states.
How early do I need to send a preliminary notice?
It depends on your state. Oregon requires notice within 8 days of first furnishing labor or materials. Washington requires 10 days. California and Arizona require 20 days. Nevada requires 31 days. Florida requires 45 days. The clock starts the day you first set foot on the job or deliver materials — not the day you sign the contract.
Can I send a preliminary notice after I've already started work?
Yes, but your protection will be limited. In California, for example, a late preliminary notice only covers labor and materials furnished in the 20 days before you served the notice and going forward. Work done before that window is unprotected. In Florida, if you miss the 45-day window, you lose lien rights entirely. Send it immediately when you start work — don't wait.
Does sending a preliminary notice mean I'm threatening the GC or owner?
No. Preliminary notices are routine documents that experienced GCs and owners receive on every project. They are a standard part of construction administration. Most GCs expect them and in many states actually require them before issuing payment. Sending one does not damage relationships or signal distrust.
What information do I need to send a preliminary notice?
You typically need: the property owner's name and address, the general contractor's name and address, a description of the work or materials you're furnishing, the property address or legal description, and your own company name and address. LienFlash collects all of this in a simple form and populates the correct state-specific template.
How long is a mechanics lien valid after filing?
It depends on the state. In Florida, a lien is valid for 1 year from the date of recording under Fla. Stat. § 713.22, but you must enforce it (file suit) within that period or it expires. In California, you must file suit to enforce within 90 days of recording the lien under Cal. Civ. Code § 8460. In Washington, enforcement must begin within 8 months of recording under RCW 60.04.141. Check your state's statute — an unfiled suit lets the lien expire.
Do I need a lawyer to send a preliminary notice?
No. Preliminary notices are standardized forms, not legal pleadings. They do need to comply with state statutes — the right language, right recipients, right delivery method. LienFlash uses attorney-reviewed templates and handles compliant delivery for $24.99 per notice, which is far less than an attorney would charge to draft and send the same document.
What's the difference between a preliminary notice and a notice of intent to lien?
A preliminary notice is sent at the start of a project to preserve lien rights. A notice of intent to lien is sent later — usually when payment is already overdue — as a warning that you will file a mechanics lien if payment isn't received. Some states require a notice of intent before you can record a lien. They serve different purposes at different stages of the payment dispute process.
Protect Your Lien Rights Today
Every day you work on a project without a preliminary notice on file is a day you're working without a safety net. Deadlines are tight — Oregon gives you 8 days, Washington gives you 10 — and there's no filing a late one and getting full protection back. LienFlash sends state-compliant preliminary notices via USPS Certified Mail in under 2 minutes, with attorney-reviewed templates and a Certificate of Mailing PDF you can use as proof of service in any dispute. Start your first notice at $24.99, or protect your whole pipeline with the Pro Annual plan at $399/year. File your preliminary notice now at LienFlash → or use the free lien deadline calculator to find out how much time you have left on your current projects.