Panel Permits: Kailua vs Waipahu
How do panel permits rules compare between Kailua, HI and Waipahu, HI?
Kailua and Waipahu have similar restriction levels.
Kailua, HI
Honolulu County
Kailua homeowners installing rooftop PV qualify for expedited permits under ROH Sec. 18-5.10; new homes must include solar-ready capacity for a 5kW AC array.
View full Kailua rules →Waipahu, HI
Honolulu County
Waipahu homeowners can use ROH Sec. 18-5.10 expedited permitting for residential solar PV up to 20kW, a meaningful bill offset for leeward Oahu's strong sun exposure.
View full Waipahu rules →Key Facts Comparison
| Fact | Kailua | Waipahu |
|---|---|---|
| Code | ROH Sec. 18-5.10 | ROH Sec. 18-5.10 |
| Expedited | Clean energy projects | - |
| Solar-ready | Building Code Sec. R408 | - |
| State reference | HRS Sec. 269-101 et seq. | HRS Sec. 269-101 to 111 |
| Expedited threshold | - | Up to 20kW residential |
| Solar readiness | - | Building Code Sec. R408 |
Highlighted rows indicate differences between cities.
Kailua FAQ
How fast is the expedited permit in Kailua?
Qualifying residential PV often clears within days through DPP's expedited clean energy process, subject to plan completeness and any structural review.
Do new Kailua homes need solar?
The Building Code requires new dwellings to reserve capacity for a 5 kW AC PV system. Actual panel installation is encouraged but not mandated statewide.
Waipahu FAQ
Are older Waipahu plantation homes eligible for expedited solar review?
Yes, if the project qualifies under ROH Sec. 18-5.10. Older roofs may need a structural assessment before racking installation and permit approval.
Does Waipahu need a second permit for battery storage?
Battery storage typically requires electrical permits under ROH Chapter 17 and may involve additional review. Expedited processing in Sec. 18-5.10 covers qualifying clean energy projects.
Compare other topics
See how Kailua and Waipahu compare on other ordinance categories.
Want to add a third city?
Use our full comparison tool to compare up to three cities.
Open Comparison Tool