Schedule of Rates vs Bill of Quantities
Difference between a schedule of rates (SOR) and a BOQ, and when each is used in procurement.
Comparison
A schedule of rates lists unit prices without committing full quantities upfront—useful when scope volume is uncertain but unit prices need locking.
A BOQ usually includes measured quantities for a defined scope at tender.
SOR-led tenders still need clear item descriptions and units so bidders price the same scope; missing definitions invite low rates and high claims later.
When SOR is common
Maintenance frameworks, term contracts, and emergency works often use SOR because job sizes and frequencies vary.
Infrastructure repair or small works packages may combine an SOR with a cap or mini-competition per call-off.
When BOQ is common
Greenfield building projects with defined drawings usually use BOQs so lump sums and comparisons are straightforward.
If quantities are known, BOQ reduces arithmetic risk during tender evaluation—total price is rates × quantities with clear adjustments.