Colo. Rev. Stat. § 29-4-507
The authority and the property of the authority is exempt from all taxes and special assessments on the same basis and subject to the same conditions as provided for city housing authorities in sections 29-4-226 and 29-4-227. Like a city housing authority, an authority may voluntarily apply to include eligible real property, as defined in section 32-20-103(4), in which it has an interest as described in section 29-4-226(2) into the boundaries of the Colorado new energy improvement district created in section 32-20-104(1) and may accept the levying by the district of a special assessment, as defined in section 32-20-103(14), against the eligible real property. In lieu of taxes on its property, the authority may agree to make such annual payments to the taxing bodies in which the projects are situated as it finds consistent with the maintenance of the low rent character of the projects or the achievement of the purposes of this part 5.
C.R.S. § 29-4-507