Every commercial construction project has a schedule. Most owners review it at the start, nod at the completion date, and then trust the contractor to manage it from there. By the time they realize the project is in trouble, weeks or months of delay have already compounded — and the contractor has a narrative ready to explain why it isn't their fault.
Understanding how to read a construction schedule — and more importantly, what it's designed to obscure — is one of the most valuable skills an owner's representative brings to a project.
The Schedule Is Not Neutral
The contractor builds the schedule. That's standard practice, and it makes sense — they're the ones executing the work. But it also means the schedule is written from their perspective, structured to protect their interests, and presented in a way that limits your visibility into real risk.
A contractor's schedule is a legal document. It establishes the baseline against which delay claims are measured. It defines what the contractor committed to deliver and when. So contractors have strong incentives to build schedules that look aggressive, give themselves flexibility in the right places, and document early when problems emerge — so that delays can be characterized as owner-caused or force majeure rather than contractor-caused.
None of this is necessarily bad faith. But it means you need someone who understands the game to read the document on your behalf.
Four Things to Look for in Any Construction Schedule
1. The critical path. Every construction schedule has a critical path — the sequence of activities that determines the project completion date. Any delay to a critical path activity delays the project. But not all activities are on the critical path, and contractors sometimes obscure which ones are. If you don't know where your critical path runs, you don't know which delays actually matter.
2. Float. Float is the amount of time an activity can slip without affecting the project completion date. Contractors often treat float as their own resource — something they can consume without obligation to the owner. But on most contracts, float belongs to the project, not the contractor. Understanding where float exists and who controls it is essential to managing schedule risk.
3. Logic ties. Activities in a construction schedule are linked by logic — this can't start until that finishes. When a schedule is revised after a delay, contractors sometimes adjust logic ties in ways that make the delay appear smaller than it is, or shift responsibility for the delay onto other parties. Reviewing logic changes between schedule updates is how you catch this.
4. The look-ahead. A three-week or four-week look-ahead schedule shows what the contractor is planning to accomplish in the near term. This is often more useful than the master schedule for identifying problems early. If the look-ahead consistently shows activities that don't get completed on time, the master schedule completion date is not achievable — regardless of what the Gantt chart says.
The Schedule Update Is Where You Learn the Truth
A contractor's initial schedule is a plan. The schedule updates — submitted monthly on most commercial projects — are where you learn whether the plan is working. But schedule updates are also where the most sophisticated schedule manipulation happens.
I review every schedule update on the projects I manage. I compare it to the prior update, identify which activities slipped and by how much, check whether the logic was changed, and determine whether the new completion date is credible given current progress. When I see warning signs — activities consistently slipping, float being consumed faster than expected, logic being adjusted without explanation — I raise them immediately, before they become a crisis.
When the Schedule Slips
Delays happen on commercial construction projects. That's the reality of the industry, particularly in a market as complex as Los Angeles. The question isn't whether delays will occur — it's whether you have someone identifying them early, assessing their impact accurately, and holding the contractor accountable for a credible recovery plan.
A contractor without an engaged owner's representative on the other side of the table will submit a revised schedule that shows recovery without a realistic plan to achieve it. An owner's representative who knows how to read a schedule will require a detailed recovery narrative, identify whether the plan is executable, and document the delay's cause clearly — which matters significantly if there's ever a dispute about who's responsible.
If your project has a schedule and you're not sure whether it reflects reality, that's a problem worth addressing now rather than at substantial completion.
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