Retaining wall permit checklist — Boise, Idaho
Assembled from Boise’s own published permit rules. Every line below is quoted from a city document and linked to it. Nothing here is generated, estimated, or inferred from another jurisdiction.
Do you need a permit?
Boise requires a permit for a retaining wall.
Boise requires a permit once a retaining wall reaches 4 feet, sized from the footing base up to the wall's highest point. That threshold drops to 2 feet where a slope or added load sits behind the wall, and walls in that situation must also be engineered.
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Sources
- retaining wall — fee schedule ↗verified August 2026
Other permits Boise publishes rules for
Listed because the city publishes a separate rule for each type — not because this project necessarily triggers one. Whether it does depends on your scope of work.
- Deck permit checklist
- Fence permit checklist
- Shed permit checklist
- Water heater permit checklist
- Re-roof permit checklist
- Electrical work permit checklist
- General building work permit checklist
BuildSpec is a reference, not the authority having jurisdiction. Confirm requirements with Boise before you build.