Retaining Walls: Ewa Gentry vs Kaneohe
How do retaining walls rules compare between Ewa Gentry, HI and Kaneohe, HI?
Ewa Gentry and Kaneohe 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 →Kaneohe, HI
Honolulu County
Kaneohe's rolling terrain makes ROH Sec. 21-4.40 retaining wall rules especially relevant. Fill-retention walls in required yards cannot exceed 6 feet, and terraced walls are combined for height calculation.
View full Kaneohe rules →Key Facts Comparison
| Fact | Ewa Gentry | Kaneohe |
|---|---|---|
| - | - |
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.
Kaneohe FAQ
My lot drops 10 feet to the neighbor. Can I build one tall wall?
Not a single wall in a required yard; you would need terraced walls with drainage, stamped engineering, and permits.
Are rock-and-riprap walls treated differently?
Riprap walls up to 30 inches are permit-exempt, but larger or engineered rip rap typically needs permits and drainage design.
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