BOQ
Bill of Quantities
A Bill of Quantities (BOQ) is the commercial construction document that itemises every material and service required for a construction contract with quantity, rate, and total cost. BOQs are common in civil and construction contracting; in process plant EPC the term is used interchangeably with Material Take-Off (MTO) for procurement scoping. BOQs feed into vendor bidding and commercial evaluation across construction and EPC procurement.
Full Definition
A Bill of Quantities (BOQ) is the structured commercial document used in civil and construction contracts that itemises every material and service required with quantity, unit rate, and total cost. BOQs are produced by quantity surveyors based on engineering drawings, specifications, and contract documents. In process plant EPC, the term BOQ is sometimes used interchangeably with Material Take-Off (MTO), though MTO typically refers to the quantity-only deliverable from engineering while BOQ adds commercial rates and totals from procurement. BOQs feed into vendor bidding and commercial evaluation. See the MTO standard reference for the engineering quantity deliverable.
Context & Detail
BOQ content
A typical BOQ contains itemised lines covering: material description (material grade, specification, size), unit of measurement (metres, kilograms, cubic metres, each), quantity, unit rate (from vendor quote or rate-card), and total cost. BOQ may also include services (welding, painting, scaffolding, inspection) with hours, day rates, and total cost. The total BOQ value forms the basis of the construction contract.
BOQ vs MTO
MTO (Material Take-Off) is the quantity-only deliverable from engineering, derived from isometric drawings, line lists, and equipment lists. BOQ extends MTO with commercial rates and totals from procurement. In civil and construction contracting, BOQ is the dominant term. In process plant EPC, MTO is the dominant term for engineering quantities and BOQ enters at the commercial evaluation stage. The two terms are sometimes used interchangeably.
BOQ in Indian construction
Indian construction contracting (civil works, structural steel, electrical works, mechanical erection) follows BOQ-driven contracting per Indian Standards (IS) construction conventions. Indian PSU EPC contracts often combine BOQ-format civil scope with MTO-format process plant scope. The two formats coexist within the same project deliverable structure.
EPC Usage
- 01
Construction subcontracting on EPC projects (civil works, structural erection, painting, scaffolding, insulation, electrical erection) follows BOQ-driven contracting with itemised quantity-rate-total tables.
- 02
Indian PSU construction contracting uses BOQ-format civil scope (concrete, rebar, structural steel) alongside MTO-format process plant scope (piping, valves, fittings, equipment).
- 03
Brownfield revamp projects produce fresh BOQ for new construction scope (civil modifications, structural extensions, electrical extensions, painting). Existing plant BOQ remains the baseline reference.
- 04
Multi-EPC mega-projects coordinate BOQ across multiple construction subcontractors plus the EPC scope. Interface BOQ items (common civil services, common electrical infrastructure) require multi-party coordination.
- 05
BOQ feeds into commercial evaluation alongside Technical Bid Evaluation (TBE). The successful bidder receives the construction Purchase Order keyed to the BOQ specification.
How Pathnovo Handles It
Pathnovo's piping MTO extraction product produces MTO output that feeds BOQ assembly downstream. Combined with MR package assembly, Pathnovo closes the engineering-to-procurement loop for material BOQ items. For civil and construction BOQ scope, Pathnovo's engineering document intelligence platform supports document extraction across BOQ-relevant drawings (civil drawings, structural drawings, electrical schematics).
Frequently Asked Questions
What is a BOQ?
A Bill of Quantities (BOQ) is the commercial construction document that itemises every material and service required for a construction contract with quantity, unit rate, and total cost. BOQs are common in civil and construction contracting and serve as the basis for vendor bidding and commercial evaluation.
What is the difference between BOQ and MTO?
MTO (Material Take-Off) is the quantity-only deliverable from engineering derived from isometric drawings and line lists. BOQ extends MTO with commercial rates and totals from procurement. In civil construction, BOQ is dominant. In process plant EPC, MTO is dominant for engineering quantities and BOQ enters at commercial evaluation.
What does a BOQ contain?
A BOQ contains itemised lines with material description, unit of measurement, quantity, unit rate, and total cost. Services (welding, painting, scaffolding, inspection) may also appear with hours, day rates, and total. The total BOQ value forms the basis of the construction contract.
Who produces the BOQ?
Quantity surveyors produce the BOQ based on engineering drawings, specifications, and contract documents. In process plant EPC, the engineering team produces MTO and the procurement team converts MTO to BOQ for commercial evaluation. The successful bidder receives the construction Purchase Order keyed to the BOQ specification.
Can Pathnovo support BOQ assembly?
Yes. Pathnovo's piping MTO extraction product produces MTO output that feeds BOQ assembly. Combined with MR package assembly, Pathnovo closes the engineering-to-procurement loop for material BOQ items.
Related Pages
Piping MTO Software
MTO extraction feeding BOQ assembly.
MR Package Assembly
Material Requisition assembly downstream of MTO and BOQ.
MTO Standard
Material Take-Off engineering deliverable.
TBE Standard
Technical Bid Evaluation that runs alongside commercial BOQ evaluation.
Procurement Intelligence Pillar
Full procurement workflow across MTO, BOQ, MR, TBE.
See what your documents actually contain.
Send us 10 documents from your current project. We extract, reconcile, and show you exactly what we find in 48 hours, before any contract.
If the accuracy isn't what we promised, you owe us nothing.