Building permits in New Hampshire
1 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.
1 checked against the department's own page
Licensing
No statewide general-contractor license — GCs are licensed locally; the state licenses only specific trades (electricians, plumbers, gas fitters) through OPLC.
No statewide GC license (local licensing); NH Office of Professional Licensure & Certification (OPLC) — trades