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A two-week look-ahead schedule pulls activities from your master schedule and breaks them into 1–5 day tasks with named owners and cleared constraints for the next 14 days. You build it by pulling master schedule lines, decomposing them into crew-sized tasks, identifying blockers (materials, RFIs, inspections, labor), and reviewing it weekly with your subs in a rolling window. Its success is measured by Percent Plan Complete — how many tasks actually got done when planned.

Your master schedule says drywall starts on the 14th. The drywall isn’t on site. The elevator is being used by the mechanical crew. The inspector’s booked until Friday. So the 14th comes and goes, your crew stands around, and the schedule slides.

That’s the exact problem a two-week look-ahead schedule solves. Instead of hoping the next milestone works out, you zoom into the next 14 days, break the work into crew-sized tasks, and hunt down every blocker before it stops production. It’s a core piece of the Last Planner System developed by Glenn Ballard and Greg Howell, and it’s used primarily in construction project management because it fixes the gap between what the schedule promises and what the jobsite can actually deliver.

Here’s how to build one, what to put in it, and the mistakes that quietly kill it. No theory — just what works on a working jobsite.

What a Two-Week Look-Ahead Actually Does (That Your Master Schedule Can’t)

A two-week look-ahead is a short-interval planning tool that takes activities from your master schedule and details the work coming up in the next one to two weeks — broken into assignable tasks with quantities, assignments, and constraints identified. Where the master schedule says “drywall Levels 2–4, six weeks,” the look-ahead says “hang board Rm 204, Apex crew, 350 boards, delivery confirmed Tuesday.”

Think of it like the difference between a road map and your windshield. The map shows you’re driving from Denver to Salt Lake City. The windshield shows the deer standing in your lane right now. The look-ahead is your windshield.

Its real job is make-ready planning. Every task gets screened against six common constraints: design (drawings done?), materials (on site?), permits and inspections, labor, equipment, and workspace (is another trade in the way?). If a task clears all six, it’s “made ready.” If it doesn’t, you now have two weeks to fix it instead of finding out at 7 a.m. on start day.

The payoff shows up in a metric called Percent Plan Complete (PPC) — the share of planned tasks that actually got done as planned. Teams that plan this way routinely push PPC from the 50s into the 80s. That’s not magic. That’s blockers removed early.

Build Yours in 8 Steps: From Master Schedule to Ready-to-Work Tasks

Here’s the process, start to finish. Most superintendents can run the first one in about two hours once they have a template.

1. Pull activities from the master or phase schedule for the next two weeks. Start with what the CPM says should happen, not what you wish would happen.
2. Break activities into tasks of 1–5 days. If a task takes longer than a week, it’s not a task — it’s a small project. Split it.
3. Define completion criteria. What does “done” mean? “Rough-in complete, Rm 204, tested and capped” — not “work on rough-in.”
4. Identify constraints for every task. Material deliveries, open RFIs, submittals, inspection slots, crew availability, equipment, workspace conflicts. Write them down next to the task.
5. Assign responsibility and duration. A named crew or foreman owns each task. “Somebody” is not an assignment.
6. Review it collaboratively in a weekly lookahead meeting with your subs and foremen — 30 minutes, standing, at the wall or board.
7. Track constraint removal all week. Whoever owns a blocker (the PM chasing an RFI, the buyer expediting a delivery) reports on it.
8. Update weekly as a rolling window. Every week, drop the finished week and add a new one. The schedule is always a living 14 days.

A concrete example: your master schedule shows level 3 framing starts Monday the 10th. Decompose it: track layout (Day 1, Carpenter A crew), frame corridors east (Days 2–4), frame Rms 301–312 (Days 3–5), plumb and line check (Day 5). Constraints: studs delivered by the 8th, layout drawings released, elevator time reserved for material moves. Five tasks, three constraints, one page. That’s a look-ahead.

The Template Layout That Fits on One Page

Keep it simple. The best look-aheads fit on a single spreadsheet or one section of whiteboard, because if it doesn’t fit, nobody reads it. Here’s the layout ForemanBrief recommends — seven columns, one row per task:

Notice the task format: verb + noun + location. “Install conduit, Rm 204” beats “electrical” every single time. It’s assignable, measurable, and a foreman can look at it and know exactly what to load on the cart.

You can run this in Excel or Google Sheets, on a whiteboard with sticky notes, or in software like Procore, Autodesk Construction Cloud, Touchplan, or Trimble. The tool matters far less than the discipline. A whiteboard that gets updated weekly beats a $30k platform nobody touches after the kickoff meeting.

One rule: mark constraint status honestly. A task with an unresolved submittal is not ready, no matter how much the schedule wants it to be. Fake “ready” checkmarks are how look-aheads die.

Why the Weekly Meeting Makes or Breaks the Whole Thing

The lookahead meeting is where the schedule becomes real. Hold it weekly, same time, same place, 30 minutes maximum, with superintendents, foremen, subcontractor reps, and the PM in the room. Skip it, and within three weeks your look-ahead becomes a document you update alone at your desk — which is worthless.

Here’s why crew input matters more than manager input. On a hospital job, a superintendent planned duct rough-in for the west wing without asking the sheet metal foreman. In the Monday meeting, the foreman pointed out the ceiling grid in that zone wasn’t framed yet — the ceiling crew was two days behind. Two-minute conversation, task moved 48 hours, zero lost crew hours. Without the foreman in the room, that’s a six-figure standing-around day.

Run the meeting in this order: (1) review last week — what got done, what didn’t, and why (record the reasons for non-completion; patterns in that list are gold); (2) walk the next two weeks task by task; (3) assign a name and date to every unresolved constraint; (4) confirm who’s feeding what into this week’s work plan.

Since 2020, remote and hybrid versions with shared digital whiteboards have become normal, and they work fine for teams spread across regions. The one non-negotiable: the people who will physically do the work must have a voice. If your subs won’t show up, start small — invite two key subs, prove the meetings remove their blockers, and the rest will follow.

5 Mistakes That Quietly Kill Look-Ahead Schedules

Most failed look-aheads don’t die from lack of effort. They die from five predictable mistakes:

1. Tasks too vague. “Plumbing” is not a task. “Set fixtures, Rms 310–318, 9 WCs + 9 lavs” is. If a foreman can’t visualize the first hour of work from reading the line, it’s too broad.
2. Skipping the constraint check. Copying master schedule lines forward without asking “what could stop this?” just gives you a prettier version of the same fantasy.
3. Doing it alone. A look-ahead built by one superintendent in a trailer is a wish list. The subs who do the work know the lead times and the conflicts you can’t see.
4. Not keeping it rolling. Build it once, file it, forget it. The rolling window — dropping a week, adding a week, every single week — is the whole mechanism.
5. No record of why tasks slipped. When you log reasons for non-completion (waiting on RFI, crew pulled to punch list, weather), you get data. Three slips in a row from “late submittal approval” is a procurement problem you can actually fix.

There’s also the zombie-task problem: work that keeps getting pushed back week after week. If a task slides more than two consecutive weeks, stop copying it forward. Pull it out, figure out the real constraint, and either clear it or resequence around it. A look-ahead full of carried-over tasks trains everyone to ignore the document.

How to Know It’s Working: PPC and the Numbers That Matter

You measure a look-ahead by workflow reliability, not by how nice the grid looks. The headline number is Percent Plan Complete: tasks completed as planned, divided by tasks planned, times 100. Plan 40 tasks, complete 34 on the day you said — that’s 85% PPC.

Here’s what that looks like on a real board. Say week one you planned 40 tasks and only 22 got done as scheduled — a 55% PPC. The non-completion log tells you why: six tasks waited on a late conduit delivery, five on a framing inspection that slipped, and the rest on a crew pulled to punch list work. That log is the diagnosis. You expedite the delivery, book the inspector two weeks out instead of one, and protect the crew from punch list pulls. Three weeks later you plan 42 tasks and complete 35 — an 83% PPC. Same job, same crews. The only thing that changed is that constraints got removed before start day instead of during it.

Track three numbers weekly:

• PPC — did the work happen as promised? Industry experience says unplanned sites sit in the 50s; well-run look-ahead programs push into the 80s.
• Constraint removal rate — of the blockers identified this week, how many got cleared by their due date? Example: you flagged 12 constraints Monday, 9 were cleared by their due dates — that’s 75%, and the three misses tell you exactly where to apply pressure next week.
• Tasks made ready — what percentage of next week’s tasks have all six constraints cleared? If only 60% of next Monday’s tasks are “ready” by Thursday, you have three working days to rescue the other 40% — which is exactly the early warning the look-ahead exists to give you.

Watch the trend, not the single week. A PPC of 60 one week and 85 the next three weeks is a system coming online. A PPC that bounces between 45 and 90 means your planning is inconsistent — usually a meeting-attendance problem.

One caution on window length: two weeks is the most common interval because most constraints (deliveries, inspections, sub availability) can be fixed inside 14 days. If your project has long-lead procurement — switchgear, curtain wall, custom millwork running 8–12 weeks out — pair the two-week look-ahead with a six-week look-ahead for those trades. Example: if switchgear ships in week 9, a six-week look-ahead surfaces that gap in week 3 — early enough to expedite, resequence, or negotiate — instead of discovering it the week the gear was supposed to land. Per research from the Lean Construction Institute on the Last Planner System, windows of 2, 3, and 6 weeks are all standard practice; pick the one that matches your longest constraint lead time.

Frequently Asked Questions

What’s the difference between a look-ahead schedule and a master schedule?

The master schedule covers the whole project in coarse activities — “drywall Levels 2–4, six weeks” — and is built for milestones and payment applications. The look-ahead zooms into the next 14 days and breaks those activities into 1–5 day tasks with named crews, quantities, and identified constraints. Think map versus windshield: the master schedule shows the route; the look-ahead shows what’s in your lane right now.

Should I use a 2-week, 3-week, or 6-week look-ahead window?

Match the window to your longest constraint lead time. Two weeks works for most standard materials, inspections, and crew scheduling. Use three or six weeks when you have longer procurement items — switchgear, curtain wall, custom millwork — or when inspection authorities need advance booking. Many superintendents run a two-week look-ahead for daily production and a six-week version for long-lead trades.

Can I build a two-week look-ahead in Excel, or do I need construction software?

Excel or Google Sheets is plenty. A seven-column layout — week/day, task, location, crew, quantity, constraints, status — handles everything a $30k platform does for planning purposes. Tools like Procore, Autodesk Construction Cloud, and Touchplan add reporting, integration with your CPM schedule, and multi-project visibility, which matters at scale. But the discipline of the weekly update matters ten times more than the tool.

Who should attend the weekly lookahead meeting?

The superintendent runs it, and you need foremen, subcontractor representatives, and the project manager — the people who control constraints (RFIs, submittals, procurement) plus the people who do the work. Keep it to 30 minutes, standing, in front of the board. If subs won’t participate at first, invite two key trades, prove the meeting clears their blockers, and the rest will show up.

How does a two-week look-ahead relate to the Last Planner System?

It’s the middle layer. The Last Planner System, developed by Glenn Ballard and Greg Howell, runs master scheduling → phase planning → lookahead planning → weekly work planning. The look-ahead is the “make-ready” step: it screens tasks for constraints two weeks out and feeds only ready work into the weekly work plan. That’s what drives Percent Plan Complete up — crews only get work that can actually be done.

How do I handle weather, inspections, and other constraints I can’t control?

Put them on the constraint list anyway, with a trigger date and a backup plan. For weather, note the rain-day fallback (indoor tasks your crew can pivot to). For inspections, book the slot two weeks out and list what the inspector needs on site. You can’t control external constraints, but a look-ahead makes sure a weather day costs you one day — not one day plus a week of cascade delays because no one had a Plan B.

Conclusion

Start small. This week, pull next week’s work from your master schedule, break it into crew-sized tasks, and write down what could stop each one. Run it past two foremen over coffee. That single page — one week of honest tasks with one week of cleared constraints — will catch more delays than any scheduling platform you’ll ever buy.

The two-week look-ahead isn’t a document. It’s a promise you make on Monday that your crews can keep by Friday. Make it every week, and watch how quiet the radio gets.