Signage Rules: Honolulu vs Mililani Mauka
How do signage rules rules compare between Honolulu, HI and Mililani Mauka, HI?
Honolulu and Mililani Mauka have similar restriction levels.
Honolulu, HI
Honolulu County
Honolulu's Land Use Ordinance prohibits any exterior signage indicating a home is used for a business. Under ROH § 21-5.350, home occupations must be invisible from the street — no signs, displays, or advertising may be mounted on or near the dwelling.
View full Honolulu rules →Mililani Mauka, HI
Honolulu County
Home business signs in Mililani Mauka are tightly restricted by ROH Chapter 21, Article 7, and by HOA covenants, with residential zones typically allowing only a modest nameplate.
View full Mililani Mauka rules →Key Facts Comparison
| Fact | Honolulu | Mililani Mauka |
|---|---|---|
| Exterior signs | Prohibited for home occupations | - |
| Residential district sign max | 4 sq ft (non-dwelling use only) | - |
| Illuminated signs | Not permitted in residential zones | - |
| Governing code | ROH § 21-5.350; Ch. 21 Art. 7 | - |
| Enforcing agency | Honolulu Dept. of Planning & Permitting | - |
| - | - |
Highlighted rows indicate differences between cities.
Honolulu FAQ
Can I put a small nameplate on my mailbox for my home business?
No. ROH § 21-5.350 prohibits any exterior signage that indicates the residence is used for non-residential purposes, including nameplates advertising a business.
Can I advertise my home business with a sign in my window?
Interior window signs visible from the street may still violate the intent of ROH § 21-5.350. Consult the Honolulu DPP for guidance on specific situations.
Are there any exceptions for certain licensed home businesses?
The ordinance makes no general exceptions. Any home occupation, regardless of type or license, must comply with the no-exterior-sign requirement under § 21-5.350.
Mililani Mauka FAQ
Can I place a real estate style sign for my business in my Mililani Mauka yard?
No. Commercial yard signs for home businesses are not permitted under Article 7 and likely also violate Mililani Town Association covenants.
Is a small professional nameplate acceptable?
A modest nameplate is generally allowed under Article 7 subject to size and placement limits, but HOA covenants may further restrict it.
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