Colorado mechanics lien deadlines

2 deadlines NoticeGuard models for Colorado: what each one counts from, the statute it was read from, and the statute text.

Information, not legal advice. This app reports what the statute says and cites the section it read. It is not legal advice, it does not file anything for you, and it does not tell you what to do.
Verify with the statute or an attorney. Statutes change, and courts reinterpret them. Every deadline in this app comes from a statute read on the date shown next to its citation - that snapshot can go out of date. Missing a mechanics lien deadline can extinguish your claim permanently, so confirm any deadline you are relying on with an attorney licensed in that state before you act on it.
Data verified: statute text retrieved 2026-09-21 (each citation below carries its own date). Rule data from the NoticeGuard app, source commit 22f9300.

Deadlines at a glance

DeadlineCounted fromApplies toStatute
File the lien statement120 days after last furnishing (last day on site)Original contractor, Subcontractor, Supplier, Preconstruction serviceC.R.S. § 38-22-109 (5)
Commence an action to enforce the lien, and record notice of it180 days after last furnishing (last day on site)Original contractor, Subcontractor, Supplier, Preconstruction serviceC.R.S. § 38-22-110 (sole section, "Action commenced within six months")

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Each deadline, with the statute

File the lien statement

Filed with the county clerk and recorder in the county where the property is located, counted from the day this claimant last performed labor or last furnished laborers or materials.

What it counts from. 120 days after last furnishing (last day on site).

Applies to. Original contractor, Subcontractor, Supplier, Preconstruction service.

C.R.S. § 38-22-109 (5)
Official source · statute text retrieved 2026-09-21

“Except as provided in subsections (10) and (11) of this section, the lien statements of all other lien claimants must be filed for record at any time before the expiration of four months after the day on which the last labor is performed or the last laborers or materials are furnished by such lien claimant.”

If the date is missed (the statute's own terms). The lien statement "must be filed for record" within this period - this is the general filing rule applying to essentially every claimant type in this app.

Also stated next to this deadline.

Commence an action to enforce the lien, and record notice of it

Counted from the SAME date the filing deadline uses - this claimant's own last labor or last furnishing (not the date the lien statement was recorded). Before this date, the claimant must both commence an enforcement action and record a notice with the county clerk stating the action has been commenced.

What it counts from. 180 days after last furnishing (last day on site).

Applies to. Original contractor, Subcontractor, Supplier, Preconstruction service.

C.R.S. § 38-22-110 (sole section, "Action commenced within six months")
Official source · statute text retrieved 2026-09-21

“No lien claimed by virtue of this article... shall hold the property longer than six months after the last work or labor is performed, or laborers or materials are furnished, or after the completion of the building, structure, or other improvement... as prescribed in section 38-22-109, unless an action has been commenced within that time to enforce the same, and unless also a notice stating that such action has been commenced is filed for record within that time in the office of the county clerk and recorder of the county in which said property is situate.”

If the date is missed (the statute's own terms). The statute states the lien "shall not hold the property longer than six months" past this date without both a timely-commenced action and a timely-recorded notice of that action - official annotations confirm §§ 38-22-109 and 38-22-110 "must be construed together" (Pacific Lumber Co. v. Lieberman, 1924).

Also stated next to this deadline.

Weekend and holiday rollover

NoticeGuard does not model a weekend or holiday extension for Colorado. The dates above are the plain count from the date you enter. Check whether a Saturday, Sunday or holiday changes your date.

What this rule set does not cover

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About the NoticeGuard app

NoticeGuard is an app that turns a job's dates into a countdown for each statutory step, shows the statute text each date was read from, exports a calendar file (.ics) and sends reminders 14, 7 and 1 day before each deadline. It tracks and reminds; it does not file anything for you.

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