Change Order Cost Evaluation

Why Change Order Cost Evaluation Matters
Change orders are one of the most common sources of cost growth, schedule slippage, and disputes on construction projects. For the Construction Manager (CM), evaluating the cost of a proposed change is a core Cost Management responsibility described in the CMAA Standards of Practice. Done well, change order cost evaluation protects the Owner's budget, maintains fairness to the Contractor, preserves the integrity of the contract, and creates a defensible record. Done poorly, it leads to overpayment, claims, strained relationships, and erosion of the Owner's trust in the CM. The CCM exam tests this area because it sits at the intersection of cost management, contract administration, and professional ethics.

What Change Order Cost Evaluation Is
Change Order Cost Evaluation is the systematic process by which the CM reviews, analyzes, negotiates, and recommends action on a Contractor's proposed price (and time) for a change to the contract scope. A change order is a written modification to the contract, signed by the Owner and Contractor (and typically acknowledged by the Designer), that adjusts the contract sum, the contract time, or both. The CM does not unilaterally approve change orders; the CM evaluates and recommends, and the Owner decides.

Key terms to know:
• Change Order (CO): A formal, bilateral contract modification.
• Construction Change Directive (CCD) / Field Directive: A unilateral Owner instruction to proceed with changed work before price and time are agreed.
• Proposed Change Order (PCO) / Change Order Request (COR): The Contractor's priced proposal for a change.
• Request for Information (RFI): Often the origin point of a change when it reveals a design gap or conflict.
• Independent Cost Estimate (ICE): The CM's own estimate prepared before reviewing the Contractor's price.
• Contingency: Owner-held funds reserved for changes; the CM tracks drawdown against it.

How It Works – The Process

1. Identify and Validate the Change. Confirm that the requested work is actually outside the contract scope. Compare against drawings, specifications, addenda, and the contract's order-of-precedence clause. Many "changes" are really contractor errors, means-and-methods issues, or work already required by the documents. Determine the cause: Owner-directed change, design error or omission, differing site condition, unforeseen condition, regulatory change, or Contractor-requested substitution. The cause affects entitlement and who ultimately bears the cost.

2. Prepare an Independent Cost Estimate. Before reviewing the Contractor's number, the CM should develop an ICE based on quantity takeoff, current labor rates, material quotes, equipment rates, and the contract's allowable markups. This prevents anchoring on the Contractor's figure and gives the CM a basis for negotiation.

3. Review the Contractor's Proposal in Detail. Examine:
• Quantities – verify takeoffs against drawings or field measurement.
• Labor – crew size, productivity rates, hours, wage rates (including prevailing wage where applicable), burden.
• Materials – unit prices supported by quotes; check for duplication with base contract.
• Equipment – owned vs. rented, rates per recognized guides (e.g., Blue Book), idle vs. operating time.
• Subcontractor costs – same scrutiny; verify tiered markups follow contract limits.
• Overhead and profit – apply only the percentages the General Conditions allow; watch for markup-on-markup.
• Bond and insurance – usually permitted at stated rates.
• Credits – deleted work must be credited, including associated overhead/profit where the contract requires.
• Time-related costs – extended general conditions are only justified if the change actually extends the critical path.

4. Evaluate Schedule Impact. Determine whether the change affects the critical path using a fragnet or time impact analysis. Non-critical changes consume float but do not justify extended overhead. Time and cost are evaluated together, never in isolation.

5. Negotiate. Reconcile differences between the ICE and the proposal. Negotiation should be fact-based, documented, and focused on reaching a fair and reasonable price – not simply the lowest price. Where agreement cannot be reached and work must proceed, recommend a CCD with time-and-materials tracking, or unit prices if the contract provides them.

6. Recommend and Document. Prepare a written recommendation to the Owner stating entitlement, the recommended amount and time, the basis of the evaluation, and the impact on contingency and the overall budget. Update the change order log, the cost report, and the cash flow forecast. Obtain required signatures before the Contractor proceeds (unless a CCD was issued).

7. Track and Close. Monitor cumulative change order volume, trend analysis (recurring causes signal design or management problems), and contingency depletion. Report regularly to the Owner.

Pricing Methods for Changes
• Lump sum – agreed fixed price, preferred when scope is well defined.
• Unit price – pre-established rates in the contract applied to measured quantities.
• Time and materials (cost-plus) – used when scope is uncertain; requires daily verified tickets signed by the CM's field staff; often capped with a not-to-exceed amount.
• Forward pricing vs. after-the-fact pricing – forward pricing (agreeing before work starts) is preferred because it provides cost certainty and avoids disputes.

Common Red Flags the CM Should Catch
• Inflated or unsupported quantities
• Productivity rates far below industry norms without justification
• Markups applied in layers exceeding contract limits
• Charging for work already in the base scope
• Extended general conditions claimed with no critical path impact
• Equipment charged at new-purchase rates rather than ownership/operating rates
• Missing credits for deleted work
• Cumulative impact or "ripple" claims without substantiation

The CM's Role and Ethics
The CM acts as the Owner's agent and advisor but must evaluate changes fairly and objectively. The CMAA Code of Ethics requires honesty, integrity, and avoidance of conflicts of interest. The CM should neither rubber-stamp Contractor requests nor arbitrarily reject legitimate costs. Recommendations must be supported by documentation and the contract. The CM typically does not have authority to approve changes affecting cost or time – that authority rests with the Owner unless expressly delegated.

Exam Tips: Answering Questions on Change Order Cost Evaluation

Tip 1 – The contract governs. When a question asks how markups, pricing methods, or time extensions should be determined, the correct answer almost always points back to the General Conditions or contract terms, not to industry custom or negotiation preference.

Tip 2 – The CM recommends; the Owner approves. Watch for distractors suggesting the CM approves, signs, or authorizes change orders independently. The CM evaluates and recommends; the Owner (and Contractor) execute.

Tip 3 – Prepare the independent estimate first. If asked about the first step upon receiving a Contractor's proposal, the best answer is usually to verify scope entitlement and prepare or compare against an independent estimate – not to begin negotiating the Contractor's number.

Tip 4 – Link time and cost. Any question about extended overhead or delay costs hinges on critical path impact. If the change does not delay the critical path, extended general conditions are not justified.

Tip 5 – Prefer forward pricing and documentation. When work must proceed before agreement, the right tool is a Construction Change Directive with verified T&M records, not an informal verbal authorization. Time and materials should be a fallback, not the default.

Tip 6 – Fair and reasonable, not lowest. CMAA emphasizes fairness to all parties. An answer that says the CM should reject costs simply to save the Owner money, or accept them to keep the Contractor happy, is wrong. Choose the answer grounded in objective analysis.

Tip 7 – Identify the root cause. Questions often hide the key fact in the cause of the change (design error vs. Owner request vs. differing site condition). Entitlement, responsibility, and even who pays may change with the cause.

Tip 8 – Trend and contingency management. Expect questions on tracking cumulative change orders against contingency and reporting trends to the Owner. The CM's job is proactive: flag recurring causes and forecast contingency exhaustion early.

Tip 9 – Eliminate extremes. Options containing absolutes ("always," "never," "immediately reject") are usually distractors. The best CCM answer reflects a disciplined, documented, contract-based process.

Tip 10 – Think like the Owner's advisor. When in doubt, ask: which answer best protects the Owner's interests through objective evaluation, proper documentation, and adherence to the contract while treating the Contractor fairly? That is nearly always the credited response.

Summary
Change Order Cost Evaluation is the disciplined verification of scope entitlement, quantities, pricing, markups, and schedule impact for every proposed contract modification. The CM develops an independent estimate, scrutinizes the Contractor's proposal line by line, negotiates a fair and reasonable price, documents the basis, and recommends action to the Owner while tracking the effect on contingency and budget. On the exam, anchor your answers in the contract, the CM's advisory (not approving) role, the connection between time and cost, and the CMAA commitment to fairness and documentation.