Honolulu Bill 41 & NUC: short-term rentals on Oʻahu

Oʻahu has the most restrictive STR rules in Hawaiʻi. Bill 41 (2022) — codified at ROH §21-10.1— banned short-term rentals (< 30 days) outside the resort-zoned districts. The grandfathered "Non-Conforming Use Certificate" (NUC) program preserves a few hundred legacy STRs at named addresses; new NUCs are not being issued.

Permit types on Oʻahu

• Non-Conforming Use Certificate (NUC) — NUC
  ROH §21-4.110 / Bill 41 (2022)
  Grandfathered <30-day rentals outside resort zones. Annual renewal.
• Bed & Breakfast Home permit — BB_HOME
  ROH §21-4.110-1 / Bill 89 (2019)
  Owner-occupied B&B, limited new permits per year.
• Resort-zone STR (≤30 day) — RESORT_ZONE
  ROH Ch. 21 §21-3.50 (Resort District)
  Waikīkī, Ko Olina, Turtle Bay — short-stay permitted as of right.

The 30-day minimum

Outside resort zones + NUC properties, Oʻahu rentals must be at least 30 consecutive days per stay. Bill 41 originally tried to mandate 90 days but was partially blocked in Hawaii Legal Short-Term Rental Alliance v. City & County of Honolulu; the 30-day floor stuck.

Posting requirements

ROH §21-10.1(c) requires:

• NUC or B&B Home permit number in all listings
• Operator contact + 24-hr phone
• Tax IDs (GE + TA) in advertisements

Compliance checks Honolulu tracks

• Smoke + CO detector certification — renew every 12 mo
  HRS §132-9.6 (CO) + ROH §16-2.1 (smoke detectors)
• Liability insurance ($1M+) COI — renew every 12 mo
  ROH §21-10.1(b)(7)
• Permit + tax IDs displayed in every listing — one-time
  ROH §21-10.1(c)
• NUC / B&B Home annual renewal — renew every 12 mo
  ROH §21-4.110(j)

Full breakdown on the Honolulu county page and a printable compliance checklist.