Do I need to send a preliminary notice before filing a lien in Colorado?
Last reviewed July 5, 2026
Yes, in Colorado, you need to send a preliminary notice to the property owner before filing a lien. This notice should be sent within 60 days of your first work or delivery of materials to the project site.
Key points
- Preliminary notice is required in Colorado.
- Send it within 60 days of starting work.
- Not sending can impact your lien rights.
In Colorado, if you want to secure your right to file a mechanics lien, you must provide a preliminary notice to the property owner. This notice informs them of your involvement in the project and must be sent within a specific timeframe to avoid any issues later on. Failing to send it can jeopardize your ability to file a lien.
How Alloovium helps
Alloovium can help you track compliance deadlines and manage your preliminary notice requirements.
See how it worksRelated questions
- Can a subcontractor file a lien without a written contract in Colorado?
- How long does a mechanics lien last in Colorado?
- How much retainage can be withheld on a construction project in Colorado?
- What are the prompt payment rules for construction in Colorado?
- What is the deadline to file a mechanics lien in Colorado?
- What is the difference between a conditional and unconditional lien waiver in Colorado?
General information for US construction professionals — not legal advice. Lien deadlines, retainage caps and notice rules vary by state; verify with the state statute or a construction attorney.