Provisional sums & contingencies
Where prime-cost items, provisional sums, and contingency sit in a tender — and how to price the unknowns honestly.
Not every cost is known at tender. Here's where prime-cost items, provisional sums, and contingency sit — and how to price the unknowns without hiding them.
Fixed, measured works
The bulk of the tender: quantities you can count and price from the catalog, at high confidence.
Prime-cost items
A known item, unknown supplier — carry a defined allowance the client can adjust when they select the product.
Provisional sums
Work you know is coming but can't yet quantify — a ring-fenced, labelled allowance, never buried padding.
Contingency, stated openly
A percentage for risk shown as its own line — so the client sees exactly what's firm and what's an allowance.
It's in the works.
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