Colo. Rev. Stat. § 38-33-104
Whenever condominium ownership of real property is created or separate assessment of condominium units is desired, a written notice thereof shall be delivered to the assessor of the county in which said real property is situated, which notice shall set forth descriptions of the condominium units. Thereafter all taxes, assessments, and other charges of this state or of any political subdivision, or of any special improvement district, or of any other taxing or assessing authority shall be assessed against and collected on each condominium unit, each of which shall be carried on the tax books as a separate and distinct parcel for that purpose and not on the building or property as a whole. The valuation of the general and limited common elements shall be assessed proportionately upon the individual air space unit in the manner provided in the declaration. The lien for taxes assessed to any individual condominium owner shall be confined to his condominium unit and to his undivided interest in the general and limited common elements. No forfeiture or sale of any condominium unit for delinquent taxes, assessments, or charges shall divest or in any way affect the title of other condominium units.
C.R.S. § 38-33-104