Arizona Mechanics Lien Law: 20-Day Notice, Deadlines & Enforcement

Arizona’s mechanics lien law, codified at Arizona Revised Statutes Title 33, Article 7 (sections 33-981 through 33-1008), lets contractors, subcontractors, suppliers, and design professionals secure payment by attaching a claim to the improved property, but only if they meet three strict deadlines: a 20-day preliminary notice, recording within 120 days of completion (60 days if the owner records a notice of completion), and a foreclosure lawsuit within six months of recording. Miss any of them and the lien right is gone for good.

Who Can File

Lien rights extend to anyone who provides labor, professional services, materials, machinery, fixtures, or tools for the construction, alteration, or repair of a building, structure, or other improvement. Architects, engineers, and surveyors qualify only if they contracted with the owner, or with a contractor or architect who has an agreement with the owner.¹

Licensing is a hard prerequisite. If your work requires a contractor’s license under Title 32, Chapter 10, you have no lien remedy without one. The same applies to design professionals who need registration under Title 32, Chapter 1. An unlicensed contractor performing otherwise lienable work cannot record a valid mechanics lien in Arizona.¹

Workers who perform actual labor for wages have lien rights without needing to serve the preliminary 20-day notice that everyone else must send.²

The Preliminary 20-Day Notice

The notice goes to the property owner (or reputed owner), the original contractor, the construction lender if one exists, and the person you contracted with. Send it no later than 20 days after you first furnish labor, services, or materials to the jobsite.²

Hit that window and your lien covers everything you have furnished from day one. Miss it and you can still send a late notice, but your coverage shrinks to work and materials provided in the 20 days before service, plus anything after. Everything earlier is unprotected forever.²

The notice must include a general description of the labor, services, or materials furnished or to be furnished; an estimated total price; your name and address; the name of the person who contracted for the work; and a jobsite description by legal description, subdivision plat, street address, or other identifying landmarks. It must also carry a bold-type warning to the owner explaining that unpaid bills can lead to a lien and foreclosure, and advising the owner to demand lien waivers from subcontractors.²

Service is by mail. You prove it with a signed acknowledgment of receipt, or, if the recipient does not return one within 30 days, with an affidavit describing the time, place, and manner of mailing attached to the certificate of mailing (first-class) or the receipt of certification or registration (certified or registered).³ Certified mail creates the cleanest paper trail, and most experienced claimants use it for that reason.

Recording Deadlines

Arizona sets two possible recording deadlines, and the shorter one applies when the owner acts:

120 days after the building, structure, or improvement is completed, if the owner does nothing.
60 days from the date the owner records a notice of completion.

Both are calendar days. There is no grace period. One day late and the lien right is extinguished.⁴

Owners who want to squeeze the timeline sometimes record a notice of completion specifically to trigger the 60-day clock. If you are a subcontractor or supplier on a job that appears to be wrapping up, watch the county recorder’s index.

What the Lien Must Say

The notice and claim of lien must be signed under oath by the claimant or someone with knowledge of the facts, and it must contain six items:

The full legal description of the land and improvements, not just a street address.
The name of the owner or reputed owner and the name of the person who employed the claimant or received the materials.
If the contract was oral, a statement of its terms, timing, and conditions; if written, a copy of the contract.
The total demand after subtracting all credits and offsets already received.
The date the building, structure, or improvement was completed.
The date the preliminary 20-day notice was served, with a copy of that notice and proof of mailing attached.

⁴

Errors in the legal description or the owner’s name are the most common grounds for a challenge. Pull the legal description from the county assessor rather than copying it off an invoice.

Prepare duplicate copies. Record one with the county recorder in the county where the property sits. Serve the second copy on the owner within a reasonable time after recording. The statute does not define that window, so the safer practice is to mail the served copy as soon as the recorded document comes back from the county.⁴ Keep proof of both the recording and the service; a foreclosure court will want to see every step.

The Six-Month Enforcement Window

A recorded mechanics lien expires exactly six months after recording unless the claimant files a foreclosure lawsuit and records a notice of lis pendens within that period. If the six months pass without both steps, the lien evaporates. The debt may still exist as a personal claim, but the security against the property is permanently lost.⁵

Filing the lawsuit is not enough on its own. ARS 12-1191 requires a lis pendens recorded with the county recorder where the property sits, so anyone searching title sees the pending litigation. Without it, the lien dies at the six-month mark even with a case on file.⁵

One exception: if another lien claimant sues to foreclose and names you as a defendant, filing an answer or cross-claim that asserts your lien within the six-month window counts as commencing your own action.⁵

Owner-Occupied Homes Are Largely Off Limits

ARS 33-1002 blocks mechanics liens against owner-occupied dwellings unless the claimant has a written contract directly with the owner-occupant. A subcontractor hired by a general contractor cannot lien the home if the GC fails to pay, no matter how much is owed.⁶

To count as an owner-occupant, you must hold recorded legal or equitable title before construction begins and reside in the dwelling (or intend to) for at least 30 days during the year after the work is finished. You cannot intend to sell or lease it to others, and if you let someone outside your family live there exclusively, you lose owner-occupant status. The protection covers single-family and two-family residential properties, including condominiums. Any contract clause purporting to waive it is void.⁶

Clearing a Lien With a Bond

An owner who disputes a lien does not have to wait out a foreclosure suit. Under ARS 33-1004, the owner can record a surety bond equal to 150% of the lien amount and serve a copy on the claimant. The lien is then discharged from the property and transferred to the bond; the claimant’s remedy shifts to the bond proceeds.⁷ This is the usual route for owners trying to sell or refinance property with a clouded title.

Waivers Follow Statutory Forms

Arizona prescribes four specific lien waiver forms under ARS 33-1008: conditional and unconditional waivers on progress payments, and conditional and unconditional waivers on final payment. A waiver that does not substantially follow one of these forms is unenforceable, and contract clauses attempting to waive lien rights outside these forms are void.⁸

The conditional forms take effect only when the payment check clears. The unconditional forms are enforceable on their face, even if the money never actually arrived, so never sign one before the funds have landed.

Release, Penalties, and Attorney Fees

Once a lien is satisfied, the lienholder has 20 days to issue and record a release. Failure exposes the lienholder to a $1,000 statutory penalty, actual damages caused by the delay, and reasonable attorney fees.⁹

Recording a lien you know is forged, groundless, or contains a material misstatement is expensive. Under ARS 33-420, the claimant is liable to the owner for the greater of $5,000 or triple actual damages, plus reasonable attorney fees. Refusing to release an invalid lien after a written request costs at least $1,000 or triple actual damages, plus fees. The conduct is also a Class 1 misdemeanor, and any document claiming a lien not authorized by statute, judgment, or other specific legal authority is presumed groundless and invalid.¹⁰

Fee-shifting runs both directions. The court may award reasonable attorney fees to the successful party in any action to enforce a lien, whether that is the claimant foreclosing or the owner defeating the claim. Fees cannot be added to the lien itself but are recoverable in the judgment.⁵ A weak or inflated lien is an invitation for the owner to litigate hard and recover the cost of doing so.

1
Arizona Legislature. Arizona Code 33-981 – Lien for Labor, Professional Services or Materials Used in Construction, Alteration or Repair of Structures
2
Arizona Legislature. Arizona Code 33-992.01 – Preliminary Twenty Day Notice
3
Arizona Legislature. Arizona Code 33-992.02 – Proof of Mailing of Preliminary Twenty Day Notice
4
Arizona Legislature. Arizona Code 33-993 – Procedure to Perfect Lien, Notice and Claim of Lien, Service, Recording
5
Arizona Legislature. Arizona Code 33-998 – Limitation of Action to Foreclose Lien, Attorney Fees
6
Arizona Legislature. Arizona Code 33-1002 – Definitions, Inapplicability of Certain Liens to Owner-Occupied Dwelling, Waiver Void
7
Arizona Legislature. Arizona Code 33-1004 – Discharge of Mechanic’s Liens, Bond, Limitations of Actions
8
Arizona Legislature. Arizona Code 33-1008 – Waiver of Lien
9
Arizona Legislature. Arizona Code 33-1006 – Release of Mechanic’s and Materialman’s Liens, Liability
10
Arizona Legislature. Arizona Code 33-420 – False Documents, Liability, Special Action, Damages