Retaining Walls: Ewa Gentry vs Kapolei
How do retaining walls rules compare between Ewa Gentry, HI and Kapolei, HI?
Ewa Gentry and Kapolei have similar restriction levels.
Ewa Gentry, HI
Honolulu County
ROH Sec. 21-4.40 controls retaining walls in Ewa Gentry, limiting fill-containing walls inside required yards to six feet and combining terraced wall heights for measurement.
View full Ewa Gentry rules →Kapolei, HI
Honolulu County
ROH Sec. 21-4.40 limits fill-containing retaining walls in Kapolei to six feet within required yards and combines terraced wall heights for compliance measurement.
View full Kapolei rules →Key Facts Comparison
| Fact | Ewa Gentry | Kapolei |
|---|---|---|
| - | - |
Highlighted rows indicate differences between cities.
Ewa Gentry FAQ
Can I build two stacked retaining walls to exceed the height limit?
No. ROH 21-4.40 combines terraced wall heights so stacking does not bypass the six-foot limit in required yards.
Do I need an engineer for a rear-yard retaining wall?
Most fill-retaining walls above the short-wall exemption require engineered drawings and a DPP permit.
Kapolei FAQ
Can I stack two three-foot walls to build a six-foot terrace?
Terraced walls are measured together, so stacking does not avoid the six-foot cap in required yards under 21-4.40.
Do I need a permit for a short planter wall?
Planter or retaining walls under 30 inches are often exempt, but check ROH 18-3.1 and HOA rules before starting.
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