Michigan Retaining Wall Permit Requirements

Statewide Building Code

Michigan enforces the 2015 Michigan Residential Code (MIRC2015), based on the IRC and administered by the Department of Licensing and Regulatory Affairs (LARA). Local municipalities enforce these codes and may set additional standards.

R404.4 Retaining Walls – MIRC 2015 / IRC 2015

Section R404.4 of the Michigan Residential Code specifies:

  • Retaining walls not laterally supported at the top that retain over 48 inches (1219 mm) of unbalanced fill must be designed by an engineer.
  • Walls over 24 inches (610 mm) that resist lateral loads from structures or slopes also require engineered design.

These guidelines ensure safety from overturning, sliding, excessive pressure, and water uplift.

When Is a Retaining Wall Permit Required?

Permit requirements vary locally, but typical criteria include:

  • A building permit is required for retaining walls 4 feet or taller (measured from bottom of footing to top).
  • Exemptions may apply for walls under 4 feet that do not support a surcharge (uniform vertical pressure from above).

For instance:

  • Grand Rapids requires a permit for retaining walls over four feet.
  • East Lansing exempts walls under four feet if they don’t support a surcharge.

Check with your local enforcement agency for specific rules.

Front Yard Setback Requirements

Setback distances for retaining walls are established by local zoning codes and depend on lot size, right-of-way, and property classification. Contact your local planning department to confirm front-yard setback rules in your area.

Local Jurisdiction Requirements

Grand Rapids

  • Permit Requirement: Retaining walls 4 feet or taller need a building permit.
  • Process: Apply through Grand Rapids Development Services.

East Lansing

  • Permit Threshold: Walls under 4 feet are exempt unless supporting surcharge.
  • Process: Check with the City of East Lansing Building Department.

Norvell Township (Jackson County)

  • Permit Required: Permit and stamped engineered plans are mandatory for waterfront retaining walls.
  • Process: Submit site plan, topography, soil information, and pay fees as described in the local permit application.

Grand Haven

  • Permit Requirement: New or repaired retaining walls over 48 inches require both a building permit and land-use permit.
  • Additional Rules: Walls must not alter drainage, must meet setback rules (typically 1 ft from roads or sidewalks), and may require guardrails if height creates hazard.

Michigan’s enforcement of R404.4 (from IRC 2015) mandates that retaining walls over 4 feet or those supporting surcharge loads be designed by an engineer and permitted. Local jurisdictions may have additional rules, such as setbacks, guardrail requirements, and erosion control. Always consult with your city or township building department before beginning a retaining wall project. Learn more about our engineering services in Michigan here.