How to recover a construction schedule
Find which activities on the critical path are late and why, sort out whose delay it is, then pick the cheapest mix of overlapping work, adding crews or hours, and resequencing that gets the finish date back, and put it in a written recovery schedule.
To recover a construction schedule, first update the schedule with real progress so you know exactly how late the critical path is. Then find the cause and decide whether it is excusable, because that decides who pays. Next, test recovery options on the schedule: overlap activities that can run together, add crews or hours on critical work, resequence areas, and speed up deliveries. Pick the mix that recovers the most days for the least money, write it into a recovery schedule, and track it weekly until the float is back.
Recovery is cheaper the earlier it starts. Two weeks late at 30 percent complete is a planning problem. Two weeks late at 90 percent complete is a cost problem, because there are few activities left to overlap.
Step 1: Measure the real delay
Update every in-progress activity with actual dates and remaining duration, not percent complete guesses. Recalculate. The difference between the new finish and the contract finish is the delay. Look at the critical path and at any path with less than a week of float. Often a job that looks a little late everywhere is really very late on one chain, such as an equipment submittal.
Then ask the superintendent and the foremen what is really holding the work. The schedule says framing is late. The field knows it is late because the lumber package came short and the framer lost two carpenters to another job. Recovery plans built only in the office tend to fix the wrong problem.
Step 2: Find the cause and who owns it
- Contractor-caused: short crews, rework, a sub who fell behind, late orders. You recover at your cost.
- Owner-caused: late design answers, changes, late owner-furnished items, site access. You are typically entitled to time and often money, but only if you give notice the way the contract requires.
- Neither party: unusually severe weather, strikes, and similar events. Many contracts give time but not money for these. See excusable delay.
Notice deadlines are short. On federal fixed-price construction, FAR 52.249-10 requires written notice of the causes of an excusable delay within 10 days from the beginning of the delay, unless the contracting officer extends the time. Private contracts have their own windows. Send notice first and recover second, or a delay that was not yours becomes yours. How to document construction delays for claims covers what to keep.
If the delay is yours, expect the owner to ask for a plan. On federal jobs, FAR 52.236-15 says a contractor who falls behind the approved schedule must take steps to make it up at no added cost to the government, and the contracting officer can require more shifts, overtime, extra days of work, more equipment, and a supplementary schedule showing how progress will be regained.
Step 3: Test recovery options
| Method | How it works | Watch out for |
|---|---|---|
| Overlap (fast-track) | Start a successor before the predecessor fully finishes, often by splitting areas | Trade stacking, rework if the first trade is not really done |
| Add crews | Second crew on a critical activity in a separate area | Area to work in, supervision, material supply |
| Extended hours or Saturdays | More hours per week on critical work | Overtime premium, fatigue, falling productivity over long stretches |
| Resequence | Change the order of areas or floors so critical work starts sooner | Inspection and turnover sequence, owner phasing requirements |
| Expedite procurement | Pay for faster fabrication, air freight, or a different supplier | Premium cost, submittal re-approval for substitutions |
| Change scope or milestones | Ask the owner to accept partial occupancy or defer non-critical work | Needs owner agreement in writing |
Only recover days on the critical path. Adding a crew to an activity with 15 days of float costs money and moves nothing. Put each option into a copy of the schedule, see how many days it saves, and price it. This is schedule compression done with numbers instead of hope.
Worked example: recovering 10 working days
Say a GC on a three-story wood-frame office is 10 working days late after a framing sub fell behind. The delay is the contractor's own. The contract has liquidated damages of $1,500 per calendar day, and 10 working days is 14 calendar days, so doing nothing risks about $21,000 in damages plus extended general conditions of about $2,800 per week.
| Option | Days recovered | Estimated cost |
|---|---|---|
| Second framing crew on floor 3 while floor 2 finishes | 5 | $9,000 extra mobilization and supervision |
| Start MEP rough-in on floor 2 by zone as framing completes, not after the whole floor | 3 | $1,200 extra coordination time |
| Saturdays for drywall for 4 weeks | 3 | $7,600 overtime premium |
| Air freight on storefront instead of truck | 0 (storefront not critical) | $4,000 |
The PM picks the first three: 11 days recovered for about $17,800, less than the exposure of roughly $26,600 ($21,000 in damages plus two weeks of general conditions at $5,600), with a day to spare. The air freight saves nothing because storefront has float, so it is dropped. The framing sub's subcontract may allow the GC to back-charge the second crew cost, which depends on the notices the GC sent when the sub first fell behind.
Step 4: Write and track the recovery schedule
Put the plan in a schedule revision, not an email. Show the added crews, the new overlaps, and the target dates for each recovery step. Share it with the owner if the contract requires or the owner asks, and with every sub it affects. Then track it weekly against the baseline schedule. If a recovery step does not deliver its days in the first two weeks, adjust immediately.
Mistakes to avoid
- Spending money to recover owner-caused delay without first sending notice and asking for a time extension.
- Accelerating non-critical work.
- Stacking trades so tightly that rework wipes out the gain.
- Promising a recovery date before testing it on the schedule.
- Not documenting the cost of recovery, so it cannot be back-charged or claimed later.
- Waiting until the last month, when there is nothing left to overlap.
Templates, terms, and tools
Use the construction schedule template to model options and the construction daily report template to record manpower during recovery. Related terms: liquidated damages, delay claim, and critical path method. Read how to negotiate liquidated damages before you sign the next contract.
Smart Business Automator flags risks from daily logs and delivery tracking and keeps change orders and job costs on the same job, so the cost of recovery is recorded against the right cost codes. See construction workflow automation.
Frequently asked questions
What is a recovery schedule?
A recovery schedule is a revised schedule that shows how a late project will get back to its required finish date, with the added resources, overlaps, or resequencing that make up the lost time.
Who pays for schedule recovery?
It depends on who caused the delay and what the contract says. Contractors usually pay to recover their own delays. Owner-caused delays can support a change order for acceleration costs if notice was given as the contract requires.
What is the difference between crashing and fast-tracking?
Crashing adds resources, such as crews or overtime, to shorten an activity. Fast-tracking overlaps activities that would normally run one after another. Both should only be used on critical or near-critical work.
Can an owner order a contractor to accelerate?
Many contracts allow it. If the owner orders acceleration for a delay that was excusable, the contractor may be entitled to the extra cost. Put the order and your position in writing as it happens.
