Nebraska Retaining Wall Permit Requirements

Statewide Building Code

Nebraska adopts the 2018 International Residential Code (IRC) and the 2018 International Building Code (IBC) as the foundational building codes for residential and commercial construction. Local jurisdictions may have additional amendments.

R404.4 Retaining Walls

Section R404.4 Retaining Walls of the 2018 IRC outlines requirements for the design and construction of retaining walls:

• Design Required: Retaining walls over 4 feet in height must be designed by a registered design professional unless otherwise allowed by local ordinance.
  
• Walls must account for lateral soil pressure, drainage, and potential surcharge loads from structures or slopes above.
  
• Walls must be constructed using approved materials and methods compliant with structural and geotechnical engineering standards.

When Is a Retaining Wall Permit Required?

In general, retaining walls require a permit in Nebraska if they meet any of the following criteria:

• Exceed 4 feet in height from the bottom of the footing to the top of the wall
  
• Support a surcharge (e.g., slope, adjacent structure, driveway)
  
• Retain hazardous materials or impound liquids
  

For example:

• City of Bellevue: Permit required for retaining walls over 4 feet
  
• City of Alliance: Permit required for walls over 4 feet
  
• City of Bellevue, WA – Reference: Reinforces typical IBC-based criteria
  

Front Yard Depth Requirement (Setbacks)

The IRC does not specify front setback distances. These are regulated locally through zoning ordinances. To determine allowable front yard depths for retaining walls, check your city’s municipal code or planning/zoning department.

Local Jurisdiction Requirements

Omaha

• Permit Threshold: Retaining walls over 6 feet require a permit
  
• Sources:
  
  • Omaha Area Board of Realtors Contractor Guide
    

Lincoln

• Permit Threshold: Walls over 4 feet require a permit (measured from bottom of footing)
  
• Source: Lincoln Building Permits
  

Bellevue

• Permit Threshold: Walls over 4 feet require a permit
  
• Sources:
  
  • Bellevue, WA Development FAQ
    

Grand Island

• Permit Info: No explicit retaining wall guidance found, but structural work generally requires a permit
  
• Source: Grand Island Building Services
  

Kearney

• Permit Requirement: All new construction, including retaining walls, requires a permit
  
• Jurisdiction Note: City enforces building codes within a 2-mile extraterritorial jurisdiction
  
• Sources:
  
  • Kearney Permit FAQ
    

In Nebraska, retaining walls typically require permits if they exceed 4 feet or support additional loads. Cities like Omaha may have higher thresholds (e.g., 6 feet), while places like Kearney require permits for nearly all structural work. Learn more about our engineering services in Nebraska here.