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πŸ“ Building Setbacks & Zoning/Setback Rules

Setback Rules: Ewa Gentry vs Waipahu

How do setback rules rules compare between Ewa Gentry, HI and Waipahu, HI?

Ewa Gentry and Waipahu have similar restriction levels.

Ewa Gentry, HI

Honolulu County

Some Restrictions

ROH Sec. 21-4.30 is the primary setback rule for Ewa Gentry lots, establishing minimum front, side, and rear yards plus street setbacks keyed to each residential zoning district.

View full Ewa Gentry rules β†’

Waipahu, HI

Honolulu County

Some Restrictions

Waipahu residential setbacks apply ROH 21-4.30 yard rules and ROH 21-3.70-1 district specifics, with tight plantation lots often grandfathered to lower setbacks than current code requires.

View full Waipahu rules β†’

Key Facts Comparison

FactEwa GentryWaipahu
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Primary section-ROH 21-4.30
Residential specifics-ROH 21-3.70-1
R-5 front yard-10 feet typical
Legacy lots-Often nonconforming

Highlighted rows indicate differences between cities.

Ewa Gentry FAQ

How far back must a new home sit from the street?

Street setbacks vary by district, but most Ewa Gentry residential lots require at least a 10 to 15 foot street yard under 21-4.30 and 21-3.70-1.

Can eaves or porches project into the required yard?

Limited eave and porch projections are allowed, but you must follow the specific dimensions in the LUO.

Waipahu FAQ

What setback applies to a Waipahu home?

Most Waipahu R-5 lots require a 10-foot front yard and 5-foot side and rear yards under ROH 21-4.30 and 21-3.70-1. Plantation-era homes on narrow lots may be grandfathered with smaller setbacks.

Can I add an ADU on a small plantation lot?

Possibly. ADUs must meet ROH 21-4.30 setbacks plus ADU-specific rules. Narrow plantation lots often lack the side yard required for an ADU, so DPP pre-review with a licensed design professional is recommended.

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