The Marshall & Swift index is a widely used US-origin cost indexation tool for tracking equipment and construction cost movement over time — but applying it directly to UAE and MENA plant and machinery valuations without adjustment introduces meaningful error.
What the index is designed for
Marshall & Swift tracks cost trends across equipment categories, allowing valuers to trend an asset's historical acquisition cost forward to a current cost estimate without needing to price every component from scratch. It's a practical, efficient tool for indexation-based valuation — provided its underlying assumptions match the market it's being applied to.
Why direct application to MENA doesn't work
The index is built on US cost structures — labour rates, material sourcing, freight patterns, and regulatory/compliance costs that differ substantially from UAE and broader MENA conditions. Applying the raw index trend without adjustment can materially misstate current replacement cost in either direction depending on the asset category.
The adjustments required
- Freight and import duty build-up. Most specialised plant in the UAE is imported. The index trend needs actual regional freight cost movement and applicable import duty layered on top.
- Local labour and installation cost differentials. Installation and commissioning labour costs in the UAE differ from the US baseline the index is built on.
- Currency and regional cost inflation. Exchange rate movement and region-specific inflation need to be reconciled against the index's US dollar cost trend basis.
- Asset category applicability. Some equipment translates reasonably well; locally fabricated or regionally sourced plant may need the index reference substituted entirely.
Best practice
A defensible MENA plant valuation using indexation should state clearly which index was used as the base trend, what regional adjustment factors were layered on top, and ideally cross-check the resulting figure against at least one alternative data point (a recent regional quotation, a comparable transaction, or vendor pricing) rather than relying on the adjusted index figure in isolation.