When Should You File a Mechanics Lien Instead of Sending More Reminders?

A lien is a later step, after a phone call and a written demand, and it comes with deadline and notice traps. Here is how to decide whether it fits your unpaid balance and when to call a lawyer.

By the MagicBuild team ·

When is it time to stop sending reminders and file a mechanics lien?

It is time when a phone call and a written demand with a deadline have both gone unanswered, the balance is worth the cost of a lien, and your lien deadline is still open with room to spare.

Reminders feel like progress, but your lien clock keeps running while you send them. If all you get back is excuses and reschedules, another text probably won't help. Run three checks before you send the next one:

  • Did you make a real phone call and send a written demand with a date on it?
  • Is the balance big enough to justify the cost and the hassle?
  • How many days are left before your state's filing deadline?

The third one is the trap. Lien rules and deadlines vary by state and sometimes by trade, so confirm yours with your state's contractor registration office or a construction lawyer. Put your last day on site and your deadline on the calendar the day you finish. One commenter advises sending a preliminary notice and marking the lien deadline, and says customers get more cooperative once they see you know the process, even if you never file (Reddit).

What should I do first: phone call, demand letter, or lien?

Call first, send a written demand second, and file the lien only if both get ignored.

The order matters because each step gives you something the next one needs. Here is how the steps stack up:

StepWhat you doWhat it gets you
1. Phone callAsk for a specific payment date and write it downA date to hold them to, and a sense of whether it is a cash problem or a dispute
2. Demand letterSend by email and certified mail with a pay-by date and your next stepProof of receipt and a clear deadline
3. LienFile following your state's steps and deadlinesA claim against the property that can push a sale or refinance conversation
4. Small claims or lawyerPursue the debt itselfA judgment or a lawyer-led settlement

One commenter's approach is a call, then a formal letter by email and regular mail with a 14-day notice saying you will file a lien or go to small claims, and they say many clients settle after the letter (Reddit). Another suggests a certified letter stating your intent to file, which often prompts a quick reply and gives you proof of receipt (Reddit). One contractor gave a long-time client 72 hours, then had a company file the lien, got paid, and said it cost just under $500 and took about a week (Reddit). Those are single stories, not rules.

Put these in the letter: job address, invoice number, amount owed, the date you finished, the date you need payment, and what you will do next. Keep it calm and factual, and only name a step you are willing and able to take under your state's rules.

Do I have to send a preliminary notice, and how long do I have to file?

It depends on your state and on who hired you, and in some states a late preliminary notice or a late lien filing costs you your lien rights.

California shows how strict this can get. A subcontractor or material supplier there has 20 days after starting work or delivering materials to serve a Preliminary Notice, and a late notice loses lien rights for work or materials delivered more than 20 days before it (CSLB). The same board notes that direct contractors and laborers do not have to file preliminary notices. Your state may be looser, tighter or just different. A construction billing blog warns the same thing in general terms: missing a preliminary notice deadline can cost you the lien right entirely (Simplywise).

For the filing deadline, I can't give you your number, and nobody should guess it. Ask your state's contractor registration office or a construction lawyer, then write down your finish date, your last material delivery and the deadline. Set an alarm well before it.

Serving the paperwork eats into that clock. One contractor drove by a homeowner's house more than ten times in a week trying to deliver a lien notice, with only 30 days left in the lien timeframe (Reddit). If you can't find the owner, start early, keep a log of every attempt, and ask your lawyer or your town's building department what your state accepts as proper service.

What happens if I serve the lien paperwork wrong or miss a deadline?

A lien filed late or built wrong can be invalid, and you can lose the right to file at all.

The California contractor board says lien claims are often invalid because the claimant missed the required filing timelines (CSLB). Content matters too. Under California law, a claim of mechanics lien is a written statement, signed and verified by the claimant, that includes the demand after credits and offsets, the owner's name if known, the kind of work, who hired you, a site description and your address (Civil Code § 8416). Other states have their own list.

A commenter's advice is to follow every step, use the correct legal description of the property, and serve all the parties required (Reddit). Keep copies of everything and proof of how and when you sent it.

If you already missed a deadline, the lien may be gone, but the unpaid invoice is still a debt. Ask a lawyer whether small claims or a demand through an attorney still makes sense.

Is a lien worth it on a small unpaid balance?

Often not on a few thousand dollars, but it can be on a bigger balance, depending on what the lien costs in fees and time compared with what you are owed.

One contractor reported his lawyer advised that under $6,000 she can send a certified letter to push for settlement, and if that is ignored, let it go, because pursuing a lien would cost more than $6,000 (Reddit). A commenter on another thread suggests a lien can be worth considering on a $9,000 balance if your state allows liens for your trade (Reddit). Notice that the lawyer's number was about pursuing the lien, not just filing it, and the just under $500 story above was a filing cost.

Do the math before you commit. Say you are owed $3,000 and a lawyer would charge $2,000 to enforce a lien. If the lien doesn't scare the client into paying, you are at best $1,000 ahead, before counting your own time.

The cheapest fix is avoiding the situation. Take a deposit, get a signed estimate and bill in stages. In MagicBuild, Magic builds the estimate from a photo and a description at your own prices, the client signs on their phone and can pay a deposit by card or bank, and a signed estimate becomes a project automatically.

Can I file a lien if the general contractor didn't pay me, not the homeowner?

Often yes, but it depends on your state and on whether you sent the notices your state requires, so check before you assume.

One framing subcontractor had gone 90 days since finishing with the GC still not paying. He had placed a lien before the job was done, and a commenter pointed out that on new construction the GC is responsible for payment (Reddit). So the GC is your first target under your contract, and the lien is leverage on the property.

This is where the preliminary notice earns its keep. It tells the owner you exist, before they pay the GC in full. Work in this order:

  • Call the GC and ask for a payment date.
  • Send a written demand that references your subcontract and invoices.
  • Gather your subcontract, invoices, proof the work was done and proof of any notices you sent.
  • Check your subcontract for pay-when-paid or pay-if-paid language, since it can affect what the GC owes you and when.

Be straight with the homeowner. If they paid the GC, they are not the villain, and a lawyer can tell you how your state handles that.

When should I call a lawyer instead of doing this myself?

Call a lawyer when the balance is large enough to justify fees, when you are unsure about notices or deadlines, or when more than one party is involved.

Good triggers include:

  • You think you may have missed a preliminary notice or filing deadline.
  • You are a sub, supplier or second-tier sub and the owner has paid the GC.
  • The client disputes the work, hires a lawyer or files for bankruptcy.
  • You can't find the owner to serve and the clock is running.
  • The balance is in the range where a lawyer says enforcing is worth it.

Before you file, ask whether the lawyer will review your paperwork for a flat fee. A short consult usually costs far less than losing your lien rights over one missed date. Your state's contractor registration office can also tell you which notices apply to licensed contractors.

Keeping the estimate, signature, deposit, receipts and invoices together makes any of this easier. MagicBuild files receipts to the job, lets clients pay invoices online and shows job profit, and you can start a free trial for 14 days. If you just need a clean bill to send today, use the free invoice template.

Sources

  1. Mechanics lien filed · reddit.com
  2. Contractors, how do you actually deal with customers who just don't pay? · reddit.com
  3. What if a Mechanics Lien is Filed on Your Property? - CSLB · cslb.ca.gov
  4. Civil Code § 8416 - California Legislative Information · leginfo.legislature.ca.gov
  5. Filing my first Mechanics Lien on a customers property · reddit.com
  6. Mechanics lien · reddit.com
  7. Customer disputing fixed-price contract. What would you do? · reddit.com
  8. When is it time to go to court? · reddit.com
  9. Best Construction Billing Software: 12 Picks for 2026 · simplywise.com

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