PMI recommends establishing a project baseline once planning is complete, and updating (re-baselining) it only when significant, approved changes occur.
What does Baseline Mean?
A project baseline is the approved version of the project plan—covering scope, schedule, and cost—used as a reference point to measure performance.
Baseline Key Components
- Scope baseline: Defines the work breakdown structure (WBS), deliverables, and requirements
- Schedule baseline: Establishes planned start/end dates, milestones, and task durations
- Cost baseline: Represents the approved project budget
- Quality baseline: Defines acceptable performance standards for deliverables
How are Baselines Used
- Performance tracking: Compare actual progress against the baseline (often via Gantt charts) to identify delays or early completion
- Change control: Evaluate new requests or risks against the scope baseline to determine if formal changes are required
- Budget management: Track actual costs against the cost baseline to control spending
- Quality assurance: Ensure deliverables meet predefined standards and requirements
What Documents are included in a Baseline?
Actual project document names vary from organization to organization, but here are the documents to look for:
- The approved project scope statement including the Work Breakdown Structure (WBS) and WBS dictionary
- The approved schedule or timeline
- The approved budget
- The approved quality standards
What does Re-Baselining Mean?
Re-baselining is the process of updating the baseline to reflect approved changes, creating a new reference point for performance measurement.
Why Baseline are Important
Baselines adds controls to the three-sided project triangle – Scope, Schedule, and Cost that also includes Quality.
Baselines provide:
- A fixed reference point to measure performance
- Enables early detection of deviations from the plan
- Helps control scope creep and its impact on schedule and cost
- Supports effective schedule and cost control through approved changes
Summary
In summary, baselines are essential for maintaining control, measuring progress, and ensuring project success through disciplined change management.