can i file a mechanic lien

I a sorry to hear about the issues you have experienced. In general, if contractors and suppliers don't get paid on a construction project in Colorado, they can file a mechanics lien to secure payment. A mechanics lien is a helpful legal tool that provides parties that have failed to be paid with a security interest in the property. 

If you plan to file a mechanics lien in Colorado to secure payment in which you are owed, there are several important deadlines you need to keep in mind to maintain your mechanics lien rights: 

• Notice Requirements - 10 days
• Colorado requires that all potential lien claimants (parties that intend to file a mechanics lien to secure payment) serve a Notice of Intent to Lien (NOI) on the property owner 10 days before filing
• Mechanics lien deadline - 4 months
• General contractors, subcontractors, suppliers, and most others MUST file a Colorado mechanics lien within 4 months after last providing services or materials 
• Enforcement deadline - 6 months 
• Claimants must file an action to enforce a mechanics lien (typically file suit) in Colorado within 6 months after the completion of the last furnishing of services or materials; whichever is later

If you plan to pursue a mechanics lien to secure payment that you are owed on a construction job, Levelset provides a step-by-step guide on how to file a Colorado mechanics lien. I hope this helps!