Key Takeaways
- Reviews within 30 days while details are fresh.
- Performance database eliminates systematic biases after 5-10 projects.
- PDCA cycle yields 5-10% improvement over 10 projects.
- Focus on process improvement, not blame.
Post-project review and continuous improvement—the most valuable and most skipped PM activity.
Lessons Learned Process
Within 30 days of completion: collect actual vs. planned data, analyze variances and root causes, document in standardized format, update templates and processes. Include GC and key subs. Focus on learning, not blame.
Performance Database
Track per project: actual vs. estimated by category, duration by phase, CO causes and amounts, inspection pass rates, contractor scores. After 5-10 projects, patterns eliminate systematic biases.
PDCA Cycle
Plan (use lessons to improve) → Do (execute with updates) → Check (monitor via EVM) → Act (adjust and capture new lessons). Yields 5-10% improvement in returns over first 10 projects.
Common Pitfalls
Skipping review because project is done
Risk: Same mistakes repeated on every project
Schedule review as project milestone from the start
Blame-focused review sessions
Risk: Participants become defensive, withhold information
Frame as "what can we improve?" not "who failed?"
Documenting lessons but not integrating
Risk: Growing unused library while issues recur
Assign action items with owners and deadlines for process updates
Best Practices Checklist
Sources
- PMI Lessons Learned Practice Guide(2025-01-15)
- NAHB Continuous Improvement for Remodelers(2025-01-15)
Common Mistakes to Avoid
Skipping review because project is done
Consequence: Same mistakes repeated on every project
Correction: Schedule review as project milestone from the start
Blame-focused review sessions
Consequence: Participants become defensive, withhold information
Correction: Frame as "what can we improve?" not "who failed?"
Documenting lessons but not integrating
Consequence: Growing unused library while issues recur
Correction: Assign action items with owners and deadlines for process updates
"Schedule Recovery, Multi-Project PM & Continuous Improvement" is a Pro track
Upgrade to access all lessons in this track and the entire curriculum.
Immediate access to the rest of this content
1,746+ structured curriculum lessons
All 33+ real estate calculators
Metro-level data across 50+ regions
Test Your Knowledge
1.When should a lessons-learned session be conducted?
2.What is the most valuable output of a lessons-learned process?