Arizona lien rights depend on getting the Preliminary 20-Day Notice out early and responding quickly when an owner records a Notice of Completion. A qualifying Notice of Completion can cut the lien-filing window in half, from 120 days after statutory project completion to 60 days after the notice is recorded.
Siteline tracks both paths: add the first furnishing date to calculate the preliminary-notice deadline, then use Received owner notice when a Notice of Completion arrives so the File lien milestone updates automatically. This guide explains the common requirements for subcontractors on private commercial Arizona projects and shows how to manage each step in Siteline.
Important: This article is educational and does not constitute legal advice. Arizona lien law is technical, and different rules may apply based on your role, license, contract, project type, property, and the facts of the claim. Consult a qualified Arizona construction attorney about a specific project.
Arizona lien rights at a glance
What to do | Arizona rule for commercial subcontractors | How to handle it in Siteline |
Confirm it is a private commercial project and that your company is properly licensed for the work. | Start tracking from Compliance > Lien Rights Tracker, confirm the project parties and address, and turn on reminders. | |
The Preliminary 20-Day Notice deadline runs from the first day you furnish labor, services, materials, machinery, fixtures, or tools to the jobsite. | Add Date of first furnishing. Siteline calculates the preliminary-notice milestone 20 days later. | |
Serve the required parties within 20 days after first furnishing to protect all eligible work. A late notice generally protects only the prior 20 days plus future work. | Generate or upload the notice, add every required recipient, mail it, and retain the document and delivery record. | |
One notice generally covers the project, but an additional notice may be required if the estimated total price increases by 30% or more. | Compare the current contract value with the estimate on the last notice. Create and send an updated notice when required. | |
A lien is generally due within 120 days after statutory project completion. | Add Date of job completion and review the calculated lien milestone. | |
6. Add a Notice of Completion (if issued) | If a properly recorded and timely mailed Notice of Completion may shorten the filing period to 60 days after recordation. | Select Received owner notice, add the Notice of Completion and its recordation date, and save it. Siteline adds a Notice of Completion filed milestone and recalculates the File lien deadline. |
Record the Notice and Claim of Lien in the county where the property is located, then serve the owner within a reasonable time. | Review the unpaid balance and supporting documents, escalate to counsel or a filing provider, and record the filing date in Siteline. | |
File an enforcement action within six months after the lien is recorded and record a lis pendens within five days after filing the action. | Track the six-month milestone, document the legal handoff, and add the enforcement filing date when complete. |
Before you begin
This workflow is designed for commercial subcontractors performing work on private Arizona projects. Public, federal, and tribal projects use different payment remedies and are outside this workflow. Retainage and other special claims may also require separate analysis and are not currently included in Siteline’s Lien Rights Management calculations.
Siteline tracks deadlines, documents, project status, and collections context. It does not provide legal advice, record a mechanic’s lien with the county, or file an enforcement lawsuit. Use qualified Arizona counsel or a lien-filing provider for those steps.
Siteline’s calculations are only as accurate as the project information entered. Resolve missing dates, parties, addresses, and documents before relying on a displayed deadline.
1. Start tracking the project
What Arizona law requires
Arizona mechanic’s lien rights generally apply to labor, professional services, materials, machinery, fixtures, and tools furnished to improve private real property. A contractor or subcontractor that is required to be licensed must hold the required Arizona license to claim lien rights. See A.R.S. § 33-981.
Public property cannot be liened. Unpaid subcontractors on Arizona public projects may have payment-bond rights instead, with different notices and deadlines. See A.R.S. § 34-223.
How to start tracking in Siteline
In the left navigation, select Compliance.
Select Lien Rights Tracker.
Find the project and select Start tracking lien rights for this project.
Select Confirm.
Review the project address, owner, original contractor, construction lender, hiring party, contract details, and furnishing information.
Add any missing information before relying on a calculated deadline.
To have new projects tracked automatically:
Open the Company dropdown.
Go to Company Settings and select Edit.
Turn on Default lien rights tracking.
Select Save.
To receive deadline reminders:
Open the Company dropdown.
Go to Account Settings.
Under Lien rights deadlines & reminders, choose daily or weekly notifications.
These setup options are described in Lien Rights Management: Getting Started.
Good practice: Confirm the owner, original contractor, construction lender, and hiring party at project setup. Arizona may require the preliminary notice to be served on all four.
2. Add the first furnishing date
Why the date matters
Under A.R.S. § 33-992.01, the Preliminary 20-Day Notice is due no later than 20 days after the claimant first furnishes labor, professional services, materials, machinery, fixtures, or tools to the jobsite.
The clock does not begin with the first pay app, the invoice date, or the date payment becomes late. It begins when furnishing starts. That makes the first furnishing date one of the most important pieces of information on an Arizona project.
How to add the date in Siteline
Open the Arizona project from Lien Rights Tracker.
In Key dates, select + Add date next to Date of first furnishing.
Enter the date labor, services, materials, machinery, fixtures, or tools were first furnished to the jobsite.
Save the date.
Review the File Preliminary Notice milestone. Siteline displays the deadline as 20 days after first furnishing.
The project may show a Date missing status until the required date is entered. After the date is saved, the milestone flows into the project view, Tracker, Look Ahead, and configured reminders.
3. Create and mail the Arizona Preliminary 20-Day Notice
What Arizona law requires
Except for a person performing actual labor for wages, every eligible lien claimant generally must serve a written Preliminary 20-Day Notice as a prerequisite to a valid lien. The notice must be served on:
The owner or reputed owner
The original contractor or reputed original contractor
The construction lender or reputed construction lender, if any
The person with whom the claimant contracted
The notice must substantially follow Arizona’s statutory form and include information such as the parties, jobsite, a general description of the work or materials, and an estimate of the total price. See A.R.S. § 33-992.01.
Arizona allows service by first-class mail with a certificate of mailing, registered mail, or certified mail, with postage prepaid. Service is complete when the notice is deposited in the mail. Keep proof showing what was sent, to whom, where, when, and how. A.R.S. § 33-992.02 explains the acknowledgment and affidavit requirements used to prove mailing.
What if the notice is late?
Send it anyway. A late Preliminary 20-Day Notice generally protects eligible labor, services, materials, machinery, fixtures, or tools furnished during the 20 days before service and everything furnished afterward. Earlier work may remain unprotected.
Example: If you first furnished work 45 days ago and serve the notice today, it generally protects the prior 20 days of work and future work. The first 25 days may remain unprotected. See A.R.S. § 33-992.01(E).
How to create and mail the notice in Siteline
Before sending the first notice, add your preferred Arizona form to the Form Library as described in Create and Mail Lien Documents.
Then:
Open the project from Lien Rights Tracker, Look Ahead, or the project’s Lien Rights page.
Find the File Preliminary Notice milestone and select Add filing date.
Choose Generate and complete to prepare the notice in Siteline, or Upload completed document if it was prepared elsewhere.
If generating it, select the correct Arizona template and choose Generate form.
Review the first furnishing date, estimated total price, project information, and every required recipient.
Complete the document and select Send.
Confirm the return address.
Select + Add recipient and add the owner, original contractor, construction lender, and hiring party as applicable.
Select a mailing method that satisfies your legal requirements.
Review the details and select Send notice.
Retain the completed notice, mailing record, and delivery evidence with the project.
Although the Siteline milestone says File Preliminary Notice, Arizona law requires the notice to be served on the required recipients. It is not recorded with the county and is not the mechanic’s lien itself.
You can check delivery details from the Tracker or the project’s three-dot menu. Mailing options and product functionality may change, so use the current Siteline mailing instructions when sending.
Good practice: Make the notice part of project kickoff. Arizona requires it before a payment problem develops, so waiting for an overdue pay app may leave earlier work unprotected.
4. Review the notice when the contract value changes
When Arizona may require another notice
Arizona generally requires only one Preliminary 20-Day Notice for the project, rather than a separate notice for each pay app or each month of work. However, an additional notice may be required when:
The actual estimated total price becomes 30% or more greater than the amount stated in the prior preliminary notice; or
Labor, services, materials, machinery, fixtures, or tools are furnished under additional contracts involving more than one subcontractor.
Example: If the preliminary notice estimated a total price of $100,000, review whether an updated notice is required when the estimate reaches $130,000. Change orders can push a project across this threshold even when the original notice was timely.
How to manage the change in Siteline
Keep the project’s contract value and approved change orders current.
Compare the latest estimated total price with the amount stated on the most recent Preliminary 20-Day Notice.
If the estimate increases by 30% or more, involve your legal or compliance team to confirm whether an updated notice is required.
Generate a new notice in Siteline or upload one prepared elsewhere.
Serve every required recipient using an approved delivery method.
Keep the original notice, updated notice, mailing records, and delivery evidence with the project.
Good practice: Add the 30% review to your change-order process. The accounting team should not have to discover a notice problem when the project is already approaching its lien deadline.
5. Keep project dates current and review the Tracker
“Completion” is a legal project date
For Arizona lien timing, project completion is not necessarily your company’s last day onsite, the final pay app date, or the contractual completion date.
Under A.R.S. § 33-993, if a building permit was issued and the permitting body performs final inspections and written acceptances, completion is the earliest of:
30 days after final inspection and written final acceptance; or
60 consecutive days after labor ceases, unless the stoppage results from a strike, material shortage, or act of God.
If no building permit was issued, or the permitting body does not perform final inspections and written acceptances, completion generally means the last date any labor, materials, fixtures, or tools were furnished to the property.
Because this date concerns the overall project, it may occur after your subcontract work ends. Confirm the legally operative date before entering it.
How to maintain dates in Siteline
Open the project’s Lien Rights page.
In Key dates, select + Add date next to Date of job completion.
Enter the legally operative project-completion date.
Save the entry.
Review the File lien milestone. On the standard path, Siteline displays 120 days after job completion.
Before an owner notice is added, the File lien milestone displays 120 days after job completion. The Received owner notice control appears in the upper-right corner of the milestone area. Use it as soon as your team receives a recorded Notice of Completion rather than continuing to work from the standard 120-day path.
From the Lien Rights Tracker, select the applicable date action next to a milestone to record its completion or filing date. Enter the date, upload the supporting document when available, and save the entry.
How to use the Tracker and Look Ahead
The Tracker uses status labels to help prioritize work:
Siteline status | What it means |
Date missing | Siteline needs additional information to calculate or confirm the requirement. |
Protected | The project is ongoing or the next deadline is more than 30 days away. |
At Risk | The next deadline is fewer than 30 days away. |
Rights Lost | A tracked deadline has passed. |
Not tracking | Lien-rights tracking is not active for the project. |
Use Look Ahead as a weekly task list. It surfaces missing dates, overdue actions, and upcoming requirements across projects.
See How to Track Lien Rights in Siteline for current Tracker, project, and Look Ahead
instructions.
6. Add a Notice of Completion as soon as you receive it
Why a Notice of Completion matters
Arizona generally gives a claimant 120 days after statutory project completion to record a mechanic’s lien. If a Notice of Completion has been recorded, the filing period may shrink to 60 days after recordation. See A.R.S. § 33-993(A).
The 60-day clock runs from the date the Notice of Completion was recorded, not the date your team received it or entered it in Siteline.
For the shortened period to apply to a claimant that previously served a Preliminary 20-Day Notice, the person recording the Notice of Completion must generally mail the claimant the following within 15 days after recordation:
A copy of the recorded Notice of Completion
A written statement of the recording date
The county recorder’s record-location information
The mailing must be sent by certified or registered mail with postage prepaid. If the owner or its agent fails to complete that mailing within 15 days, the claimant generally retains 120 days from statutory completion to record the lien. See A.R.S. § 33-993(I).
Do not assume the longer deadline applies because the mailing may have been late or incomplete. Preserve the notice, envelope, tracking, recording information, and date received, then ask qualified Arizona counsel which deadline controls. Operationally, work toward the shorter date unless counsel confirms otherwise.
What changes in Siteline
Siteline recognizes if an Arizona Notice of Completion as an owner-filed notice. Once the notice and recordation date are added, Siteline:
Adds a Notice of Completion filed milestone
Records the date the owner’s notice was filed
Changes the File lien milestone from the standard 120-day path to 60 days after the Notice of Completion was filed
Carries the revised deadline into the project’s lien-rights workflow so the shorter date stays visible with the other milestones
Here is the before-and-after effect shown in the Arizona project example screenshots below:
Project state | What Siteline shows |
Before the owner notice is added | File lien: 120 days after job completion |
After a Notice of Completion recorded September 25, 2026 is added | Notice of Completion filed: September 25, 2026 and File lien: November 24, 2026, which is 60 days after recordation |
Date example without an owner notice:
Date example with an owner notice:
How to add the owner notice in Siteline
Preserve the recorded Notice of Completion, envelope, tracking information, and county recording details.
Open the project’s Lien Rights page.
In the upper-right corner of Lien rights milestones, select Received owner notice.
Add the Notice of Completion and enter the date it was recorded with the county recorder.
Save the entry.
Confirm that Notice of Completion filed now appears as a milestone with the correct recordation date.
Confirm that the File lien deadline now displays 60 days after the Notice of Completion was filed.
Review the revised date in your lien-rights workflow and escalate any unpaid balance immediately if the shorter deadline is approaching.
Have Arizona counsel or your filing provider confirm whether the owner completed the statutory mailing requirements and which deadline legally controls.
Important: Adding the owner notice is a manual action. Siteline recalculates the deadline after your team enters the recordation date, so establish a process for routing every Notice of Completion to the person responsible for lien tracking.
7. File and serve the mechanic’s lien on time
What Arizona law requires
To perfect an Arizona mechanic’s lien, a claimant generally must record a sworn Notice and Claim of Lien with the county recorder in the county where the property is located:
Within 120 days after statutory project completion; or
If a qualifying Notice of Completion has been recorded and properly served, within 60 days after its recordation.
The recorded lien must include the information required by A.R.S. § 33-993, including the property description, parties, contract information, amount demanded after credits and offsets, completion date, and preliminary-notice date. A copy of the Preliminary 20-Day Notice and proof of mailing must be attached.
After recording, the claimant must serve the remaining copy on the owner within a reasonable time if the owner can be found within the county.
Arizona generally does not require a separate Notice of Intent to Lien between the Preliminary 20-Day Notice and the Notice and Claim of Lien. Your contract, company policy, attorney, or filing provider may still call for additional collection communication.
How to manage the filing in Siteline
Open the project’s Lien Rights page and verify the displayed File lien deadline.
Confirm the project-completion date and review any Notice of Completion filed milestone. If an owner notice was received but has not been added, use Received owner notice before relying on the displayed date.
Confirm the Preliminary 20-Day Notice, proof of mailing, recipient information, and any updated notices are complete.
Review Collections outstanding to see the unpaid pay app, remaining balance, payment status, notes, and contacts alongside the lien milestones.
Escalate to leadership, an Arizona construction attorney, or a filing provider with enough time to prepare and record the claim.
After the lien is recorded, select Add filing date for the File lien milestone.
Enter the recordation date and retain the recorded lien and proof of service with the project.
Siteline helps the team see the amount at risk and the time remaining in one place. The actual lien preparation, recordation, service, and legal review occur outside Siteline.
8. Enforce a recorded lien on time
What Arizona law requires
An Arizona mechanic’s lien generally expires unless an action to enforce it is filed within six months after the lien is recorded. See A.R.S. § 33-998.
A notice of pendency of action, commonly called a lis pendens, must also be recorded in the county where the property is located within five days after filing the enforcement action. See A.R.S. § 12-1191.
Enforcement is litigation. Work with qualified Arizona construction counsel well before the six-month deadline.
How to manage the legal handoff in Siteline
Confirm the lien recordation date entered for the project.
Review the Enforce lien milestone, which Siteline displays as six months after filing.
Preserve the preliminary notice, mailing proof, updated notices, recorded lien, owner service evidence, contracts, pay apps, change orders, payment history, and project contacts.
Use the collections history and outstanding balance to support the attorney handoff.
Add notes identifying the attorney or filing provider and the next action owner.
After the enforcement action is filed, add the filing date to the milestone.
Confirm with counsel that the lis pendens was recorded within five days and retain the recording information.
The Arizona project page also surfaces the lis pendens requirement in Additional notes for AZ so the five-day step is not separated from the enforcement milestone.
A weekly Arizona lien-rights routine
Use this checklist to keep the portfolio current:
Start tracking every new private commercial Arizona project.
Resolve missing owners, original contractors, lenders, hiring parties, addresses, and dates.
Add the first furnishing date as soon as work or delivery begins.
Review preliminary notices due within the next several weeks.
Create, mail, and document every required notice.
Compare current contract values with the estimates on prior notices, especially after change orders.
Monitor statutory project completion and route every owner-filed notice to the person responsible for lien tracking.
When a Notice of Completion arrives, add it through Received owner notice, enter its recordation date, and confirm the File lien milestone changes from the 120-day path to 60 days after recordation.
Review Collections outstanding and escalate unpaid projects before they reach At Risk status.
Track recorded liens, six-month enforcement deadlines, and the five-day lis pendens requirement.
Frequently asked questions
Is an Arizona Preliminary 20-Day Notice the same as filing a lien?
No. The preliminary notice preserves the ability to claim a lien later. It is not recorded with the county and does not mean payment is late.
Do I need to send a new preliminary notice for every pay app?
Generally, no. One Arizona preliminary notice usually covers the labor, services, and materials furnished for that project. An additional notice may be required if the estimated total price increases by 30% or more, or if work is furnished under additional contracts that trigger a separate notice obligation.
What if I send the notice more than 20 days after first furnishing?
Send it promptly. A late notice generally protects work furnished during the 20 days before service and all eligible work furnished afterward. Earlier work may remain unprotected.
What happens if change orders increase the contract value?
Compare the current estimated total price with the amount stated on the latest preliminary notice. If the estimate increases by 30% or more, involve your legal or compliance team and send an updated notice when required.
Is my last day onsite the project-completion date?
Not necessarily. Arizona’s lien-filing deadline generally runs from statutory completion of the overall improvement, which may be based on final inspection and written acceptance, cessation of labor, or the last furnishing to the property when no applicable final-inspection process exists.
Does every recorded Notice of Completion shorten my deadline to 60 days?
Not necessarily. For a claimant that served a Preliminary 20-Day Notice, Arizona generally requires the recorded notice and recording information to be mailed within 15 days. If that mailing does not occur, the claimant generally retains the 120-day period. Siteline displays the shorter date after the Notice of Completion is added so your team can act on the earliest potential deadline, but it does not determine whether the owner’s service was legally sufficient. Ask qualified counsel which deadline applies to the specific facts.
Does Siteline automatically find a Notice of Completion recorded by the owner?
No. Your team must add the notice from Received owner notice and enter the county recordation date. Siteline then adds the Notice of Completion filed milestone and recalculates the File lien deadline to 60 days after that date.
Which Notice of Completion date should I enter?
Enter the date the Notice of Completion was recorded with the county recorder. Do not use the date your company received the notice or the date someone uploaded it to Siteline. Preserve the recorded document and mailing evidence so counsel can review whether the shortened deadline applies.
Does Arizona require a Notice of Intent to Lien?
Arizona generally does not require a separate Notice of Intent before recording a private-project mechanic’s lien. The required Preliminary 20-Day Notice is a different document and must be handled near the start of furnishing.
What if the project is public?
Public property cannot be liened. Payment protection may come through a bond claim with different requirements and deadlines. This guide and Siteline workflow focus on private commercial projects.
Does Siteline file or enforce the mechanic’s lien?
No. Siteline tracks the dates, milestones, documents, statuses, and payment context. A qualified attorney or filing provider should prepare, record, serve, and enforce the lien.
Does a Protected status in Siteline guarantee that a lien will be enforceable?
No. The status reflects the project information and dates entered in Siteline. It does not verify licensing, notice content, service, property ownership, project type, legal completion, statutory exceptions, or other facts that may affect the claim.