Commercial Variation Order Analysis

Commercial Variation Order Analysis

Overview

Analyze and quantify variation orders — rate application, cost impact, time impact, and precedent analysis. Announce at start: "I'm using the commercial-variation-order-analysis skill to analyze a variation order."

When to Use This Skill

Trigger Conditions: Variation event directed by engineer/owner, scope change encountered, unforeseen conditions encountered, design modification required Prerequisites: Variation event documented, contract rates available, scope change identified

Step-by-Step Procedure

Step 1: Identify Variation Event

1. Identify the event triggering the variation
2. Verify written instruction received
3. Document the circumstances (date, cause, impact description)

Step 2: Verify Contractual Entitlement

1. Identify the contract clause providing for variations
2. Check if notice requirements met
3. Verify the variation is within the scope of allowable changes

Step 3: Identify Applicable Rates

1. Check if contract contains applicable rates for the varied work
2. If no applicable rate, identify analogous rates for similar work
3. If no analogous rate, calculate new rates from first principles

Step 4: Calculate Cost Impact

1. Direct costs: Additional labor, materials, equipment
2. Time-related costs: Extended preliminaries, site overhead
3. Overheads and profit: Apply contract percentage or reasonable rate

Step 5: Calculate Time Impact

1. Determine if variation is on the critical path
2. Calculate additional days required
3. Assess concurrency with other delays

Step 6: Assess Precedent

1. Identify similar variations and their settlement
2. Ensure consistency with previous variation assessments
3. Document precedent for future reference

Step 7: Prepare VO Submission

1. Compile variation description
2. Attach entitlement clause reference
3. Include detailed cost breakdown
4. Include time impact assessment
5. Submit for approval and routing

Success Criteria

• Variation event documented with written instruction
• Contractual entitlement verified and documented
• Applicable rates identified and applied correctly
• Cost impact calculated with detailed breakdown
• Time impact assessed with critical path analysis
• Precedent reviewed for consistency
• VO submission prepared with all elements

Common Pitfalls

1. No Written Instruction — Never proceed with varied work without written instruction. Oral instructions must be confirmed in writing.
2. Wrong Rate Application — Applying inappropriate rates leads to disputes. Follow contract rate hierarchy: applicable → analogous → new.
3. Missing Time Impact — Time impact is often under-assessed. Always check critical path.

Cross-References

Related Skills

• commercial-claim-quantification — Cost quantification methodology
• commercial-contract-amendment — Contract amendment process

Related Agents

• COM-009 Commercial Variation & Claims Agent — Primary agent
• COM-002 Commercial Contract Administrator Agent — Supporting agent