Real engagements. Real numbers. Real lessons.

A subcontractor preparing a competitive tender for a brownfield process plant expansion engaged Positive Earth to bring commercial review discipline to a fast-moving submission. The client was applying a lean-procurement methodology requiring full cost transparency, multiple revision cycles, and a defensible cost build-up that would survive scrutiny from both the client’s commercial team and the wider tender field.

The pre-tender pack included a large scope brief, an evolving 80+ item photo register linking scope to site evidence, supplier inputs at varying levels of completeness, and a tight submission deadline that ran across multiple revision cycles before close.

• Scope distributed across drawings, photos, and supplier emails — no single source of truth
• Each lean revision cycle required a fully reconciled re-submission
• High risk of double-loading costs between scope packages
• Margin position had to be defended without inflating the headline number

• Built a single-source-of-truth cost workbook integrating scope, BOM, labour, materials, subcontractor, and overhead recovery
• Reconciled the photo-to-scope register item by item, closing gaps between site evidence and pricing
• Populated the client’s lean cost annexure to the format required for direct comparison
• Ran the submission through nine revision cycles maintaining version control and rate consistency
• Stress-tested the build-up against double-loading risk at every revision

Final lean submission tightened to a defensible range without abandoning the subcontractor’s margin position. Scope risk visible to the tender team before submission, not after award. The reconciliation logic and commercial structure built for this submission became a reusable template for subsequent industrial pipework tenders.

A completed mechanical works package — boiler-room utility relocation in a live brownfield processing plant — needed a structured post-project commercial review. The estimating team wanted to test whether the original cost build-up held up against delivered hours and materials, whether the fee structure recovered as intended, and what should change in the next pricing cycle.

The package was a substantial delivered value, with a mix of mechanical, piping, and rigging scope completed in a constrained shutdown window.

• Most contractors never run formal post-project reviews — lessons are lost on every job
• The original estimate had been built before final scope was locked
• Multiple variations had occurred during delivery
• The team needed actionable learnings, not a backward-looking report

• Reconstructed the original cost build-up at the level of detail required for true reconciliation
• Reconciled estimated vs delivered hours by work front and discipline
• Audited the fee structure for recovery integrity — was the markup actually achieved?
• Identified specific variances by category (labour productivity, material take-off, subcontractor recovery)
• Built a structured learnings register feeding directly into the next quote cycle
• Updated the in-house rate library based on delivered evidence, not assumption

The package graded A− (87%) against an internal commercial-defensibility benchmark — the highest grade applied to a post-project review at that point. Gaps in the original estimate were identified, categorised, and logged. The next equivalent quote was built on a tightened rate base with double-loading risk explicitly checked.