How to File a Mechanic’s Lien in Colorado: Notice, Recording, and Suit

To file a mechanic’s lien in Colorado, serve a Notice of Intent to File a Lien Statement on the property owner and general contractor at least ten days before recording, then record a notarized lien statement with the County Clerk and Recorder in the county where the property is located. Contractors, subcontractors, and suppliers have four months from their last day of work or delivery; day laborers who supplied no materials have two months from completion of the overall project. Recording alone doesn’t get you paid — you then have six months from your last day of work to file a foreclosure lawsuit, or the lien expires.

The rules sit in Title 38, Article 22 of the Colorado Revised Statutes. Every step below tracks a specific section of that article, and the deadlines are jurisdictional. Courts don’t extend them for good-faith mistakes.

Who Qualifies to File

The statute covers a wide group. General contractors, subcontractors, laborers, and material suppliers can all file, along with architects, engineers, and drafters who provided designs, plans, cost estimates, or construction oversight.¹ Anyone who furnished equipment, machinery, or tools for the project is also covered.

What you need is a real contribution to the improvement. Materials ordered but never delivered don’t support a lien, and neither does work on a project that never broke ground. Subcontractors and suppliers can file even though they never contracted directly with the owner, because Colorado treats the contractor (and anyone else overseeing the work) as the owner’s agent for lien purposes.¹

Know Your Deadline Before You Do Anything Else

Everything else in this process is downstream of one date: the last day you performed work or delivered materials.

Contractors, subcontractors, and material suppliers must record the lien statement within four months of that day.² The clock is tied to when you finished your portion, not when the whole job wrapped.

Day laborers and piece-rate laborers who supplied no materials have a different rule: two months after the overall building or improvement is completed.² For this group, the deadline runs from project completion rather than the laborer’s last day on site. If the project drags on after the laborer leaves, the two-month window hasn’t opened yet.

One trap catches people on stalled jobs: if all work on an unfinished project stops for three months, the statute treats that as completion.² Ninety days of silence and the filing clock has already started. Minor punch-list work generally won’t reset or extend the deadline either. Anchor your timeline to when you finished the main scope of your contract, and file earlier than you think you need to.

Step 1: Serve the Notice of Intent

Before anything gets recorded, you have to serve a Notice of Intent to File a Lien Statement on both the property owner (or the owner’s agent) and the general contractor. The notice has to be delivered at least ten days before you record the lien.²

Service must happen by personal delivery or by certified or registered mail with a return receipt requested, sent to each recipient’s last-known address. Prepare an affidavit of service or mailing, because you’ll file it alongside the lien statement itself when you record.² Without proof of the ten-day notice, the lien is invalid.

Practically, this window often ends the dispute. Sending the notice puts the owner and contractor on the clock and frequently produces payment before anything hits the public record.

Step 2: Prepare the Lien Statement

The lien statement is a sworn document. Under section 38-22-109 it must contain four things:²

The name of the owner or reputed owner. If you don’t know the owner’s name, say so in the statement rather than guess.
Your name, the name of whoever furnished the labor or materials, and the general contractor’s name. Subcontractors identify the contractor they worked under.
A legal description of the property sufficient to identify it. A street address alone isn’t enough. Pull the lot and block, subdivision name, or metes and bounds from the county assessor’s records.
The total amount due. Contractually allowed accrued interest can be included, but see the section on excessive liens below.

Sign the statement under oath before a notary. If you spot mistakes after filing, you can record an amended statement, but only if the amendment lands within the same four-month or two-month window.²

Step 3: Record With the County

Once the ten-day notice period has run and the statement is notarized, file with the County Clerk and Recorder in the county where the property is located.² Your own business address is irrelevant; the recording follows the land.

As of July 1, 2025, Colorado uses a statewide flat recording fee of $40 per document, replacing the older per-page structure.³ Some counties add small surcharges. Many accept electronic filings through online portals, which return immediate confirmation; in-person and mail filings are still options, though mail transit time can be a problem near a deadline.

File the affidavit of service at the same time. The clerk will assign a reception number, and the stamped copy is your proof the lien exists on the public record.

Step 4: File Suit Within Six Months

Recording secures your position but doesn’t collect the debt, and the lien has a short life. You must file a foreclosure lawsuit in district court and record a lis pendens (a notice that the action has been commenced) with the County Clerk and Recorder, both within six months of your last day of work or last delivery.⁴

Miss this and the lien dies, however cleanly it was recorded. The six months run from your last work date, not from the recording date. Work through March 1 and record in June, and you still have to sue by September 1.

Most cases settle before a sale is ordered. The lis pendens is doing much of the work: it warns buyers and lenders that the title is in dispute, which usually motivates the owner to resolve the claim.

When the Owner Has Already Paid the Contractor

If you’re a subcontractor or supplier considering a lien against an owner-occupied single-family home, know this defense before you file. A homeowner who lives in the property and has paid the general contractor the full contract price generally cannot have the home liened by unpaid subcontractors and suppliers.² In that situation, your claim is against the contractor who kept the money, not the house.

Don’t Inflate the Amount

If a court finds you claimed more than was due, knew the amount was excessive, and had no reasonable possibility of being owed the full amount, you forfeit the entire lien and become liable for the other side’s costs and attorney fees.⁵

The standard is intentional overstatement, not honest mistake. If some items in your total turn out to be non-lienable but you didn’t knowingly pad the number, courts often trim the lien to the valid portion rather than throw it out. Contractually allowed accrued interest is fine. Adding leverage that isn’t actually owed is not.

Release the Lien After You’re Paid

Once you’re paid — including your filing costs, recording fees, and any accrued court costs — you have to release the lien from the record. If the owner or another interested party sends a written request to release and you don’t act within ten days, you owe $10 for every day you delay. A valid tender of payment that you refuse counts the same as actual payment for this purpose.⁶

The release is recorded with the County Clerk and Recorder the same way the original lien was. Once you’ve been paid, get it done — sitting on a release is one of the fastest ways to turn a legitimate lien into a claim against you.

1
FindLaw. Colorado Code 38-22-101 – Liens in Favor of Whom
2
Justia. Colorado Code 38-22-109 – Lien Statement
3
Colorado General Assembly. HB24-1269 Modification of Recording Fees
4
Justia. Colorado Code 38-22-110 – Action Commenced Within Six Months
5
Justia. Colorado Code 38-22-128 – Excessive Amounts Claimed
6
Justia. Colorado Code 38-22-118 – Satisfaction of Lien – Failure to Release