Colorado · C.R.S. §38-22-109
Lien Clock runs.
Notice of intent — 10 days before recording

Colorado does not run a 20-day preliminary notice. Before recording a lien you generally serve a notice of intent to lien at least 10 days prior (§38-22-109). We serve that notice and calendar the recording deadline after last work.
Start the clock · We draft. You approve. We send.