ROH Sec. 21-3.70-1 imposes impervious-surface caps on Ewa Gentry homes, including a 75 percent impervious limit for dwellings permitted after May 1, 2019.
Ewa Gentry's residential development standards are controlled by 21-3.70-1, which mixes lot-coverage limits, floor-area rules, and impervious-surface caps. For dwellings permitted after May 1, 2019, total impervious area, including the house footprint, driveways, and patios, is capped at 75 percent of the lot. This helps manage stormwater on the Ewa Plain and reduces heat-island effects in tightly developed subdivisions. Homeowners adding pools, ADUs, or expanded paving should carefully calculate impervious coverage at the planning stage to stay within the cap.
Plan check denials, retroactive removal of impervious area, and fines for overbuilt lots.
Ewa Gentry, HI
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...
Ewa Gentry, HI
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 residen...
Ewa Gentry, HI
ROH Sec. 21-4.60 sets maximum building heights and building envelope planes for Ewa Gentry, with district-specific limits usually capping homes at 25 to 30 f...
Side-by-side rule comparisons with other cities in Honolulu County.
See how other cities in Honolulu County handle lot coverage limits.
See how Ewa Gentry's lot coverage limits rules stack up against other locations.
Help us keep this page accurate. If you notice an error or outdated information, let us know.