Retaining Walls: Downey vs Pomona
How do retaining walls rules compare between Downey, CA and Pomona, CA?
Downey and Pomona have similar restriction levels.
Downey, CA
Los Angeles County
Retaining walls in Downey require building permits. Height is measured from the higher finished grade when lots differ in elevation. Retaining walls combined with fences must meet total height limits.
View full Downey rules →Pomona, CA
Los Angeles County
Retaining walls in Pomona require engineering plans and Planning Division approval. Height and material must be depicted in section drawings. Retaining walls along property boundaries may also require neighbor notification.
View full Pomona rules →Key Facts Comparison
| Fact | Downey | Pomona |
|---|---|---|
| Permit | Required for retaining walls | - |
| Grade Difference | Measured from higher lot | - |
| Combined Height | Wall + fence must meet limits | - |
| Engineering | Review may be required | - |
| Approval | - | Planning Division + Building & Safety |
| Plans Required | - | Engineering sections and elevations |
| Code | - | Pomona Zoning & Development Code |
| Building Codes | - | 2022 CA Building Codes apply |
Highlighted rows indicate differences between cities.
Downey FAQ
Do I need a permit for a retaining wall?
In Downey, walls over 4 feet typically require a building permit and engineered plans. Shorter walls may be exempt.
How close to the property line can I build a retaining wall?
Setback requirements vary. Check Downey zoning code for specific distances from property lines.
Pomona FAQ
Do I need a permit for a retaining wall?
In Pomona, walls over 4 feet typically require a building permit and engineered plans. Shorter walls may be exempt.
How close to the property line can I build a retaining wall?
Setback requirements vary. Check Pomona zoning code for specific distances from property lines.
Compare other topics
See how Downey and Pomona compare on other ordinance categories.
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