Note: This guide is based exclusively on the source materials you provided. It is not legal advice; consult your attorney before making decisions.

Overview: Are Short-Term Rentals Allowed in Waipahu?

No. Short-term rentals—lodging rented for fewer than 30 consecutive days—are strictly prohibited in Waipahu under current Honolulu County regulations, except for properties that hold a valid, non-expired Nonconforming Use Certificate (NUC).

STRs are permitted by law only in:

• Resort-zoned areas (e.g., Waikiki, Ko Olina, Turtle Bay, Makaha), and
• Very limited apartment-zoned areas defined in city ordinances.

Waipahu is not within any designated resort zone and has no city-identified apartment-zoned area that allows STRs. Therefore, operating an STR in Waipahu is unlawful unless you operate under a grandfathered NUC issued prior to October 22, 1986, and renewed annually per city rules.

If you acquired your property after the 1986 cutoff, you cannot legally start a new STR business in Waipahu. Your only lawful rental option is a minimum 30-day tenancy. Violations carry significant fines (see Enforcement section below).

How to Start a Short-Term Rental Business in This Market

Operating an STR in Honolulu requires a step-by-step, compliance-focused process. However, in Waipahu specifically, this path is not available unless you possess a valid NUC.

1. Confirm Legal Eligibility

• Use the official STR Eligibility Map to check if your property is located within an eligible zone or if it holds a valid NUC.
• If the map shows your Waipahu property is eligible only under a pre-existing NUC and you have that certificate, proceed with registration. If not, an STR is not permitted.

2. Determine STR Type Two legal STR types exist (definitions from city rules):

• Bed and Breakfast (B&B): Host present; up to two rooms rented; max two adult transient occupants per room.
• Transient Vacation Unit (TVU): Unhosted (whole home) rental; max two adult transient occupants per room.

3. Complete City Registration/Renewal Process via HNL Build

• Register or renew only through the City’s HNL Build portal (Honolulu’s online permitting platform). Licenses are issued there upon approval.
• Required documents:
  • Informational Guide for STR Registration (PDF)
  • Informational Guide for STR Renewals (PDF) (if applicable)
  • Statement of Compliance (PDF)

4. Obtain State Tax Credentials

• Apply for Hawaii GET/TAT registration (State of Hawaii Department of Taxation—General Excise Tax and Transient Accommodations Tax).
• Required for all STRs collecting guest payments. Registration must be completed before operating.

5. Display Tax ID on Listings

• State law requires your Hawaii Tax ID (GET/TAT) to be posted on all online STR listings.

6. Ongoing Compliance

• Annual NUC renewals (for grandfathered properties) occur between September 1 and October 15; failure to renew by October 15 results in automatic loss of the NUC.
• Maintain records, adhere to occupancy limits, parking rules, and advertisement requirements at all times.

Required Documents, Permits, Licenses, and Guidelines

Honolulu County (City & County of Honolulu) Requirements:

• STR Registration Informational Guide (PDF)
• STR Renewal Informational Guide (PDF)
• Statement of Compliance (PDF)
• Short-Term Rental Disclosure Form (required in real estate transactions; May 2025 revision)
• STR Eligibility Map (confirm eligibility and NUC status)
• STR Compliance Map (view properties with registrations or violations)

Nonconforming Use Certificates (NUCs):

• NUCs are “grandfathered” rights for STRs operating prior to October 22, 1986. No new NUCs are issued.
• Annual renewal is mandatory between September 1 and October 15. Failure to comply results in automatic loss of the NUC.

Hawaii State Tax Requirements:

• GET/TAT Registration (State of Hawaii Department of Taxation). Hawaii Tax ID must be included on all online listings.

Specific Regulations (City, County, State)

City & County of Honolulu (Oahu) STR Rules:

• STRs are defined as lodging for fewer than 30 consecutive days.
• STRs are permitted only within resort-zoned areas and specific apartment-zoned areas, not in Waipahu.
• NUCs are the only legal pathway for STRs outside eligible zones. NUCs must be renewed annually.
• STR types:
  • B&B (hosted): Max two rooms; max two adult transient occupants per room.
  • TVU (unhosted): Max two adult transient occupants per room.
• Advertising rules:
  • Illegal STR advertising is subject to enforcement.
  • All advertisements must include NUC number and tax map key where applicable.
• Parking:
  • Transient visitors must park in driveways or designated stalls; parking on public streets is prohibited for STR guests.
• Enforcement:
  • Violations result in fines typically ranging from $1,000 to $10,000 per day, depending on severity and recurrence.

State of Hawaii Tax Obligations:

• General Excise Tax (GET): 4% statewide + 0.5% Oahu surcharge = 4.5% of gross rental income.
• Transient Accommodations Tax (TAT): 10.25% on gross rental income for stays fewer than 180 days.
• Oahu Transient Accommodations Tax (OTAT): Additional 3% on gross rental income for stays fewer than 180 days.
• Reporting:
  • File GET and TAT returns with the State of Hawaii Department of Taxation.
  • Maintain accurate records; remit OTAT as applicable.

Contact Information (Local Authority in Charge of STRs)

Department of Planning and Permitting (DPP)

• Address: 650 South King Street, 7th Floor, Honolulu, HI 96813
• Phone: (808) 768-8000
• Fax: (808) 768-6743
• Website: See References below for official STR page and resources.
• Request for Investigation (to report suspected illegal STRs): See References.

Note: The City & County of Honolulu is the local authority regulating STRs; there is no separate city-level STR office for Waipahu distinct from DPP.

References & Source Links

• City & County of Honolulu, Department of Planning and Permitting—Short-Term Rentals page: www.honolulu.gov/dpp/permitting/str/

• STR Eligibility Map (ArcGIS Online): cchnl.maps.arcgis.com/apps/webappviewer/index.html?id=ed2eec39157f41d3a27901de4b3f7530

• STR Compliance Map (ArcGIS Online): cchnl.maps.arcgis.com/apps/webappviewer/index.html?id=a87c9d1a9c4147c48286f569701f21b4

• STR Registration Informational Guide (PDF): www4.honolulu.gov/docushare/dsweb/Get/Document-351976/Informational%20Guide%20for%20STR%20Registration_Final.pdf

• STR Renewal Informational Guide (PDF): www4.honolulu.gov/docushare/dsweb/Get/Document-351977/Informational%20Guide%20for%20STR%20Renewals_Final.pdf

• Statement of Compliance (PDF): www4.honolulu.gov/docushare/dsweb/Get/Document-351978/Statement_of_Compliance.pdf

• STR Disclosure Form (PDF, May 2025): www4.honolulu.gov/docushare/dsweb/Get/Document-350454/STR%20Disclosure%20Form.pdf

• HNL Build (Online permit portal): honolulu.my.site.com/s/

• Request for Investigation (Illegal STR reporting): www.honolulu.gov/dpp/rfi/

• Land Use Ordinance (PDF): www.honolulu.gov/dpp/wp-content/uploads/sites/56/2024/09/land-use-ordinance.pdf

• Ordinance 22-7 (PDF): www.honolulu.gov/dpp/wp-content/uploads/sites/56/2024/07/ORD22-007.pdf

• Ordinance 24-14 (PDF): www.honolulu.gov/dpp/wp-content/uploads/sites/56/2024/09/Ord24-014.pdf

• Ordinance 22-6 (PDF): www.honolulu.gov/dpp/wp-content/uploads/sites/56/2024/07/ORD22-006.pdf

• How to Register for an STR Permit (PDF): www4.honolulu.gov/docushare/dsweb/Get/Document-352004/New%20How%20to%20Register%20for%20a%20Short-term%20rental%20Permit.pdf

• How to Renew for an STR Permit (PDF): www4.honolulu.gov/docushare/dsweb/Get/Document-352005/Copy%20of%20New%20How%20to%20Renew%20for%20a%20Short-term%20rental%20Permit.pdf

• STR FAQs (DPP): www.honolulu.gov/dpp/permitting/str/str-faq/

• Hawaii Department of Taxation—General Excise Tax (GET) information: tax.hawaii.gov/geninfo/get/

• Hawaii Department of Taxation—Transient Accommodations Tax (TAT) information: tax.hawaii.gov/geninfo/27778.htm

• Oahu Transient Accommodations Tax (OTAT) (City & County of Honolulu): www.honolulu.gov/budget/oahu-transient-accommodations-tax.html

• Hawaii Business Express (GET/TAT Registration portal): hbe.ehawaii.gov/BizEx/start-help.eb

Practical Next Steps for Investors Considering Waipahu

• Confirm eligibility via the STR Eligibility Map. If your Waipahu property does not show NUC eligibility, do not pursue STR operations there.
• If your property is outside resort zones but in Honolulu’s designated apartment-zoned STR areas, proceed with city registration via HNL Build. If not, limit rentals to 30 days or more.
• Secure state tax credentials before listing; include your Hawaii Tax ID on all online ads.
• Maintain meticulous records to meet city and state reporting requirements.
• For investment strategies focused on STRs, consider properties within Honolulu’s designated resort zones (Waikiki, Ko Olina, Turtle Bay, Makaha). Waipahu does not qualify under current rules unless you hold a valid NUC.