Mechanics Lien Laws by State
Every state has different rules for filing a mechanics lien. Find the specific deadlines, notice requirements, and filing steps for your state — explained in plain English, not legal jargon.
50-State Coverage
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Click any state below to see the specific requirements, deadlines, and rules that apply to your construction projects.
What Is a Mechanics Lien and Why Does It Matter?
If you work in construction — whether you're a general contractor, subcontractor, plumber, electrician, roofer, or material supplier — a mechanics lien is your most important tool for getting paid. It's a legal right that lets you place a claim on a property you've worked on if the property owner or general contractor doesn't pay you.
Here's the basic idea: you can't take back the work you've already done. If you installed plumbing in a building and don't get paid, you can't rip the pipes out of the walls. Instead, the law gives you the right to file a lien — a legal claim that attaches to the property itself. This means the property owner can't sell or refinance the property until your claim is resolved. If they still refuse to pay, you can even force a sale of the property through the courts.
Why Are the Rules Different in Every State?
Construction law in the United States is handled at the state level, not the federal level. That means each of the 50 states has written its own set of rules for mechanics liens. Some states make it relatively easy to file a lien — just do the work, and if you're not paid, file the paperwork. Other states require you to jump through hoops first, like sending a preliminary notice within a strict deadline at the beginning of every project.
The Three Types of Notice Systems
States fall into three categories when it comes to notice requirements:
- Preliminary Notice States (like California, Arizona, and Florida) — You must send a notice at the START of a project, usually within 20-60 days of beginning work. This isn't a threat — it's like registering your involvement. If you skip this step, you lose your right to file a lien.
- Intent-to-Lien States (like Alabama, Arkansas, and Colorado) — You send a notice BEFORE filing a lien, as a final warning: “pay me or I'm filing.” This gives the property owner one last chance to resolve the payment issue.
- No Notice Required States (like New York, Pennsylvania, and New Jersey) — You can go directly to filing a lien without sending any advance notice. These states have simpler processes, but you still need to meet strict filing deadlines.
Why Deadlines Matter So Much
The single most common reason contractors lose their lien rights is missing a deadline. Every state sets specific time limits for sending notices and filing liens — and these deadlines are absolute. If your state gives you 90 days to file a lien after your last day of work, day 91 is too late. No exceptions, no extensions, no do-overs. That's why tracking these deadlines on every project is so critical.
How LienGrid Helps
LienGrid automates the entire mechanics lien compliance process across all 50 states. The platform tracks your deadlines, generates state-compliant notices with the correct legal language, identifies who needs to receive each notice, and can send them via certified mail on your behalf. Instead of manually researching state laws and tracking dates on a spreadsheet, LienGrid handles it all — so you can focus on your work while protecting your right to get paid on every project.
50-State Mechanics Lien Comparison
Click any state to see detailed requirements. Click column headers to sort.
| Alabama | Required (subs/suppliers) | 6 months | Intent to Lien |
| Alaska | Not required | 120 days | None Required |
| Arizona | 20 days | 120 days | Preliminary Notice |
| Arkansas | Not required | 120 days | Intent to Lien |
| California | 20 days | 90 days | Preliminary Notice |
| Colorado | 10 days (NTO) | 4 months | Intent to Lien |
| Connecticut | Not required | 90 days | Intent to Lien |
| Delaware | Not required | 6 months | None Required |
| Florida | 45 days (NTO) | 90 days | Preliminary Notice |
| Georgia | 60 days (NTC) | 90 days | Preliminary Notice |
| Hawaii | Not required | 45 days | None Required |
| Idaho | Not required | 90 days | None Required |
| Illinois | Not required | 4 months | Intent to Lien |
| Indiana | 60 days | 30-60 days | Preliminary Notice |
| Iowa | 30 days | 90 days | Preliminary Notice |
| Kansas | Not required | 4 months | Preliminary Notice |
| Kentucky | Not required | 6 months | Intent to Lien |
| Louisiana | Not required | 60 days | Preliminary Notice |
| Maine | Not required | 90 days | None Required |
| Maryland | 120 days (NIF) | 180 days | Intent to Lien |
| Massachusetts | 60 days (NIC) | 90 days | Preliminary Notice |
| Michigan | 20 days | 90 days | Preliminary Notice |
| Minnesota | 45 days | 120 days | Preliminary Notice |
| Mississippi | Not required | 90 days | Preliminary Notice |
| Missouri | Not required | 6 months | Intent to Lien |
| Montana | 20 days | 90 days | Preliminary Notice |
| Nebraska | Not required | 120 days | None Required |
| Nevada | 31 days | 90 days | Preliminary Notice |
| New Hampshire | Not required | 120 days | Intent to Lien |
| New Jersey | Not required | 90 days | Intent to Lien |
| New Mexico | Not required | 120 days | Preliminary Notice |
| New York | Not required | 8 months | None Required |
| North Carolina | 15 days (NTC) | 120 days | Preliminary Notice |
| North Dakota | Not required | 90 days | Intent to Lien |
| Ohio | 21 days (NFC) | 60-75 days | Preliminary Notice |
| Oklahoma | 75 days | 90 days | Intent to Lien |
| Oregon | 8 days | 75 days | Preliminary Notice |
| Pennsylvania | Not required | 6 months | Preliminary Notice |
| Rhode Island | Not required | 120 days | Intent to Lien |
| South Carolina | Not required | 90 days | Preliminary Notice |
| South Dakota | Not required | 120 days | Preliminary Notice |
| Tennessee | 90 days (NIF) | 90 days | Preliminary Notice |
| Texas | 15 days (monthly) | 4 months | Preliminary Notice |
| Utah | 20 days | 180 days | Preliminary Notice |
| Vermont | Not required | 180 days | None Required |
| Virginia | 30 days (Lien Agent Notice) | 90 days | Preliminary Notice |
| Washington | 60 days | 90 days | Preliminary Notice |
| West Virginia | Not required | 6 months | None Required |
| Wisconsin | 60 days | 6 months | Preliminary Notice |
| Wyoming | 30 days (subs) | 150 days | Preliminary Notice |
Frequently Asked Questions About Mechanics Liens
Everything you need to know about mechanics liens, explained in plain English.
This information is for general guidance only and does not constitute legal advice. Laws change frequently — always verify current requirements and consult a licensed attorney in the relevant jurisdiction before taking legal action. LienGrid makes every effort to keep this information accurate, but we cannot guarantee completeness or currency.
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