by SaggezzaDrivers
What moved the index.
Higher basket weights combined with larger price movements drive the overall index. A heavily weighted material with a modest rise can matter more than a lightly weighted one that doubled.
Contribution ranking · 2026
Weight × material index. Index points, not naira amounts.
Material index ranking · 2026
Selected period price ÷ 2023 representative price × 100
Compare two years
vs
2023
100.0
2026
268.0
Change
+168.0 pts
+168.0%
Contribution waterfall · index points
NCMPI 2023
100.0
Cement
+53.20
Reinforcement steel
+42.90
Granite
+30.00
9-inch blocks
+18.89
Sharp sand
+11.67
Roofing
+11.34
Paintcarried
+0.00
Timbercarried
+0.00
NCMPI 2026
268.0
| Material | Weight | Index 2023 | Index 2026 | Δ contribution |
|---|---|---|---|---|
| Cement | 28% | 100.0 | 290.0 | +53.20 |
| Reinforcement steel | 22% | 100.0 | 295.0 | +42.90 |
| Granite | 10% | 100.0 | 400.0 | +30.00 |
| 9-inch blocks | 12% | 100.0 | 257.4 | +18.89 |
| Sharp sand | 10% | 100.0 | 216.7 | +11.67 |
| Roofing | 8% | 100.0 | 241.7 | +11.34 |
| Paint | 5% | 100.0 | 100.0 | +0.00 |
| Timber | 5% | 100.0 | 100.0 | +0.00 |