Multi-Discipline BOQ Consolidation for a Whole Building
A building is estimated in pieces and delivered as one. Consolidation is the step where the pieces are reconciled into a bid that adds up.
Estimate by discipline first
Run each discipline’s takeoff independently — structural, architectural/finishes, electrical, plumbing/sanitary, mechanical/HVAC, fire protection, external works. Each produces a categorised, priced BOQ.
Reconcile the interfaces
| Interface | Who prices it |
|---|---|
| Builder’s work in connection (chases, holes, plinths) | Structural/architectural, informed by services |
| Equipment bases and housekeeping pads | Structural (from mechanical/electrical loads) |
| Fire-stopping at service penetrations | Fire / architectural — assign once |
| Roof penetrations and flashing for services | Architectural, quantity from services |
| Trenching shared by electrical and plumbing | Civil — one excavation, not two |
Remove overlaps and gaps
Run a scope matrix: every work item mapped to exactly one discipline. Overlaps inflate the bid; gaps become variations. The consolidation is where you catch both.
Common costs once
- Preliminaries and site overhead — one project-wide build-up, not one per discipline.
- Cranage and hoisting — shared.
- Scaffolding — allocate or make common, but not double.
The consolidated bill
Present it with a discipline summary (each discipline’s subtotal and % of works) and the reconciliation notes, so the client sees how the parts make the whole.
EngEst Pro’s Projects system consolidates every discipline calculator’s output into one project — run electrical, plumbing, structural, solar, and more, save each to the project, and the platform produces a single consolidated BOQ and grand total.
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