How to Read a Construction Schedule: An Owner's Primer

Most property owners receive a construction schedule at the kickoff meeting, nod at it, and never look at it again. That’s a significant mistake.

Your construction schedule is not a formality. It’s the single most important document on your project. It tells you when the project will be done, which activities control the finish date, and whether you’re on track or already behind. Owners who understand their schedule catch problems early. Owners who don’t get surprised.

Here’s what you need to know.

The Two Types of Schedules

A baseline schedule is established at project kickoff and represents the planned sequence and duration of all activities. It’s the benchmark against which actual progress is measured.

An updated schedule is issued periodically (weekly or monthly on most commercial projects) reflecting actual progress and any changes to the plan. The difference between your baseline and your updated schedule tells you whether your project is ahead, on track, or behind.

If your contractor is not issuing regular schedule updates, ask for them. If they can’t produce them, that’s a red flag.

The Critical Path

The critical path is the sequence of activities that directly controls the project’s finish date. Any delay to a critical path activity delays the project by the same number of days.

Activities not on the critical path have “float” — they can shift within a range without affecting the finish date. Your contractor will sometimes claim a delay is not critical because the affected activity has float. Sometimes that’s true. Sometimes it’s a way to obscure a real problem.

As an owner, you should know:

• What activities are on the critical path right now
• What the current projected completion date is
• Whether that date has moved since the baseline

What to Look for in Schedule Updates

When you receive a schedule update, ask these questions:

Has the projected completion date changed? Even small shifts on commercial projects can have significant cost implications, including carrying costs, lease commencement dates, and business opening timelines.

Which activities are driving any changes? Is it weather? Permitting delays? A subcontractor who isn’t performing? The cause matters, as some delays are recoverable and some aren’t.

What’s the recovery plan? If the project is behind, your CM should be presenting a concrete recovery plan with added shifts, accelerated procurement, and resequenced activities, not just acknowledging the delay.

What’s coming in the next 30-60-90 days? Forward-looking visibility is more valuable than backward-looking reporting. Your schedule update should include a look-ahead so you can see what needs to happen for the project to stay on track.

The 30-60-90 Day Look-Ahead

A 30-60-90 day look-ahead is a simplified view of near-term activities broken down by trade and week. It’s the most practical scheduling tool for day-to-day project management.

At Dunn Development, our PMs issue weekly look-aheads to every owner as part of our standard reporting. You should always know what’s happening on your site next week, not just where things stand in a high-level Gantt chart.

If you have questions about how we manage project schedules and reporting, reach out to our team.