Hours Spent Is Not Progress - Earned Value Distinguishes the Two
One of the most persistent project management misconceptions is equating hours worked with project progress. If a team spends 150 hours on a drawing set that was budgeted for 100 hours and the drawings are 60% complete, the team has not made 150% of the budgeted progress - they have consumed 150% of the budget for 60% of the work. Earned value management (EVM) makes this distinction explicit: it tracks what value has been earned (the value of work completed, expressed in budget terms) and compares it to what was spent (actual costs), producing the cost performance index and schedule performance index that reveal whether the project is on budget and on schedule. For architecture firms, EVM concepts adapted from construction management are increasingly used to manage project financial performance at the phase and deliverable level. The ARE PjM exam tests these concepts as project financial management tools.
Core EVM Metrics
Budget at Completion (BAC): The total fee budget for the project or phase. If the SD phase is budgeted at $75,000, BAC = $75,000. Planned Value (PV): The budgeted value of work planned to be complete by a given date. If the SD schedule calls for 60% of SD to be complete at week 6 of a 10-week SD phase, PV at week 6 = 0.60 × $75,000 = $45,000. Earned Value (EV): The budgeted value of work actually completed at the measurement date. If 50% of SD is complete at week 6, EV = 0.50 × $75,000 = $37,500. Actual Cost (AC): The actual dollars spent on the project at the measurement date. If the team has spent $42,000, AC = $42,000.
Performance Indices
From these four values, two key performance indices are calculated: Cost Performance Index (CPI) = EV / AC. In our example: CPI = $37,500 / $42,000 = 0.89. A CPI below 1.0 means we are getting less value than we are spending - the project is over budget for the work completed. CPI = 1.0 means exactly on budget; CPI > 1.0 means under budget. Schedule Performance Index (SPI) = EV / PV. In our example: SPI = $37,500 / $45,000 = 0.83. An SPI below 1.0 means less work has been completed than planned - the project is behind schedule. SPI = 1.0 means exactly on schedule; SPI > 1.0 means ahead of schedule.
Using EVM in Practice
Tracking CPI and SPI weekly on active project phases gives the project manager an early warning system - a CPI of 0.85 after three weeks of SD work means the fee will likely run out before SD is complete unless corrective action is taken. Corrective actions: increase the team's efficiency, reduce scope or deliverable complexity, negotiate a fee supplement with the owner, or accept a lower profit on this phase to protect the client relationship. EVM enables these decisions to be made while there is still time to act - not at the end of the phase when the problem is unrecoverable.
Key Exam Points
- BAC = fee budget. PV = planned value of work by date. EV = value of work actually done. AC = actual spend.
- CPI = EV/AC: below 1 = over budget for completed work. Above 1 = under budget.
- SPI = EV/PV: below 1 = behind schedule. Above 1 = ahead of schedule.
- Early warning: CPI below 0.90 early in a phase is a significant warning signal - corrective action needed.
- EVM distinguishes hours spent from progress made - the essential project financial management insight.
AREprep's PjM project financial management content covers EVM, fee utilization, phase budget tracking, and project profitability - giving ARE PjM candidates the financial management toolkit they need to answer project performance questions on the PjM exam and to understand how professional project managers actually monitor and manage project financial health throughout the design process.
Study PjM on AREprep
AREprep's PjM flashcards and practice exams are built around the actual NCARB exam guide - so every study session targets what the exam tests.