glossary Glossary 1 min read

PS

allowance for work where scope isn't fully defined (e.g.

By Dan, Chalkline · Last updated 2 May 2026

allowance for work where scope isn’t fully defined (e.g. tiling). Reconciled at actual cost + margin.

Also known as: Provisional Sum.

Category: Contracts & commercial.

Migrated from the seed glossary, 2026-05-02. Awaiting Dan’s review for “Why it matters” + “Common gotcha” expansion per WIKI-PLAN §3.6.