How Much Does Retaining Wall Cost in Illinois?
Illinois pricing is near the national average. Updated for 2026.
Retaining Wall Pricing in Illinois
In Illinois, the average cost for retaining wall is $6,825 per project, which is 5% higher than the national average of $6,500. Most Illinois residents pay between $3,150 and $15,750.
Illinois has costs that track closely with the national average, though prices can still vary between urban and rural areas within the state.
Retaining walls hold back soil on slopes, prevent erosion, and create usable flat areas. Materials include concrete block, natural stone, timber, and poured concrete.
Illinois vs National Average
What Affects Retaining Wall Cost in Illinois?
Material
Timber: $15-$25/sq ft. Concrete block: $20-$35/sq ft. Natural stone: $25-$50/sq ft. Poured concrete: $30-$60/sq ft
Height
2-3 ft: $20-$30/sq ft. 4-6 ft: $30-$50/sq ft. Over 6 ft: $40-$75/sq ft (requires engineering)
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💡 Tips to Save on Retaining Wall in Illinois
- 1.Walls under 4 feet rarely need engineering permits
- 2.Concrete block is the most affordable option
- 3.Timber walls are cheapest but last only 15-20 years
- 4.Consider a terraced design to reduce wall height and cost
📈 Retaining Wall in Illinois Cost Trends (2020–2024)
Prices have increased +17.7% over the last 5 years
| Year | National Avg | YoY Change |
|---|---|---|
| 2020 | $5,797 | — |
| 2021 | $6,040 | +4.2% |
| 2022 | $6,433 | +6.5% |
| 2023 | $6,613 | +2.8% |
| 2024 | $6,825 | +3.2% |
Based on national averages adjusted for annual inflation. Actual costs vary by location and project scope.
💬 What Did You Pay?
Real costs reported by homeowners for Retaining Wall in Illinois
Recent Reports
Frequently Asked Questions
Do retaining walls need a permit?
Usually yes for walls over 4 feet tall. Walls over 4 feet typically also require engineered plans, which cost $200-$500.
Retaining Wall Cost in Other States
Related Cost Guides for Illinois
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