Indianapolis, IN Fence Regulations: Retaining Walls (2026)
Key Facts
- Terracing trigger
- Walls over 6 feet tall
- Max tiers
- 3 tiers
- Terrace width
- 4 ft. min., 3:1 max slope
- Terrace planting
- Permanent landscaping required
Summary
Indianapolis requires retaining walls over six feet tall to be terraced in landscaped tiers, capped at three tiers, to soften their visual impact on neighbors and the street.
D.Retaining wall design standards. All retaining walls shall comply with the following standards:1.Retaining walls more than six feet tall shall be terraced to minimize visual impacts on residents, neighboring properties and the public realm.2.Terracing shall be limited to three tiers.3.A terrace at least four feet wide, with a maximum slope of 3:1, shall be provided between each tier to create pockets for landscaping. Reduced terrace depths may be administratively approved by the Administrator where site constraints limit the amount of space available to accommodate the minimum required width.4.Terraces between retaining wall tiers shall be vegetated with permanent landscaping to screen retaining walls and provide visual interest unless soil conditions are determined by a licensed engineer to be unsuitable due to geologic hazards. (G.O. 64, 2015, § 2; G.O. 37, 2018, § 12)
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 47 Update 2).
Full Breakdown
Under Marion County's development standards for fences and walls, any retaining wall taller than six feet must be terraced rather than built as one tall face. Terracing is limited to three tiers, and each tier must be separated by a terrace at least four feet wide with a maximum 3:1 slope, creating a planting pocket, though the Administrator can approve a narrower terrace where site constraints don't allow the full width. Those terraces must be planted with permanent landscaping to screen the wall, unless a licensed engineer determines soil conditions make planting unsafe due to geologic hazards.
Violations & Fines
Building an unterraced retaining wall over six feet or skipping the required landscaped terraces violates Chapter 744 and can hold up final inspection or draw a civil penalty up to $2,500.
Frequently Asked Questions
Does Indianapolis require permits or design standards for retaining walls?
Can I skip planting between retaining wall terraces?
Sources & Official References
Other rules in Indianapolis
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