They are currently broadcasting from 1089 Bannock St in Denver (the old KBTV/KUSA studios from October:1952-April:1992.) The new location will also serve as studios for KUVO-FM 89.3 Jazz radio. But that is dependent on if they get the remaining money needed to build. Currently the project is 75% funded with $22.46 Million dollars raised so far.
More here: https://www.denverpost.com/2018/02/26/rocky-mountain-pbs-new-headquarters/