Building permits in Colorado
2 jurisdictions, each with the department that issues, its portal and its phone number. Cities issue their own permits; counties cover unincorporated areas, which is the distinction that sends most contractors to the wrong office.
2 checked against the department's own page
Licensing
No statewide general-contractor license — GCs are licensed locally by each city/county building department; only electricians and plumbers are licensed statewide (through DORA).
No statewide GC license (local licensing); Colorado DORA — Division of Professions & Occupations (electrical/plumbing)