Retaining Walls: Boulder City vs Henderson
How do retaining walls rules compare between Boulder City, NV and Henderson, NV?
Boulder City and Henderson have similar restriction levels.
Boulder City, NV
Clark County
Retaining walls over 4 feet in height or supporting a surcharge require a building permit and engineered plans under the adopted International Building Code.
View full Boulder City rules →Henderson, NV
Clark County
Henderson requires a permit and engineered drawings for any retaining wall over 4 feet tall measured from footing to top of wall, or any wall supporting a surcharge. Hillside overlays add geotechnical reports.
View full Henderson rules →Key Facts Comparison
| Fact | Boulder City | Henderson |
|---|---|---|
| - | - | |
| Permit Trigger | - | Over 4 feet |
| Surcharge | - | Always permit |
| Engineering | - | Stamped drawings |
| Hillside | - | Geotech required |
| Drainage | - | Weep holes required |
Highlighted rows indicate differences between cities.
Boulder City FAQ
Henderson FAQ
When does a Henderson retaining wall need a permit?
Any retaining wall over 4 feet tall measured from footing to top of wall, or any wall supporting a slope, pool, or structure, requires a permit and engineered drawings.
Why is engineering required on hillside lots?
Ascaya, MacDonald Highlands, and Black Mountain areas have expansive soils and steep grades where unengineered walls fail during monsoon runoff.
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