What Is a Daily Log in Construction?
By Wyatt Cooper · Published · 3 min read
Key takeaways
- A daily log (daily report) records one day on site: weather, manpower by company, work done, deliveries, equipment, visitors, inspections, delays and incidents.
- Its value is that it is written the same day and states facts, so it holds up later in a delay claim, a back-charge or a pay dispute.
- A day with no log is a gap in the record; federal guide specifications ask for a report for every day work is performed.
A daily log, also called a daily report, is the superintendent's written record of one day on a construction site: weather, crews and hours by company, work performed, deliveries, equipment, visitors, inspections, delays and incidents. Written the same day, it becomes the job's factual record for pay disputes, delay claims and schedule updates.
What a daily log records, and why
Federal guide specifications ask the contractor to "Prepare a Construction Production Report and a Contractor Quality Control Report for each day that work is performed" and to "Account for each calendar day throughout the life of the Contract". The remarks cover, among other things, "directions received, problems encountered", "work progress and delays", "field changes", "a record of visitors to the work site" and "meetings held" (UFGS 01 45 00, 1.12.1).
Owners' inspectors keep their own diary by the same rules. The City of Los Angeles calls project records "a legal record of the activities that take place on a construction site in the order they happen" and tells inspectors to "Complete records the same day the work was performed" and not to "editorialize" (LA Bureau of Engineering, 17.5). A contractor's log written to that standard is the one that wins arguments. The method, with a filled-in day, is in how to write a daily log.
Example
Daily log: Tuesday, November 10
- Weather
- Rain from 6 a.m. to 11 a.m., 0.6 in.; high 48°F
- Manpower
- Framing sub 8 workers × 6 hrs; electrician 4 × 8 hrs; GC 2 × 9 hrs: 98 man-hours
- Work performed
- Level 2 interior framing, grid lines C–F; electrical rough-in, level 1
- Deliveries
- Drywall, 420 sheets, received 1:30 p.m.
- Delays
- Exterior sheathing stopped for rain, 4 hrs lost
- Inspections
- City framing inspection, level 1: passed
The man-hours: 8 × 6 = 48, 4 × 8 = 32 and 2 × 9 = 18, so 48 + 32 + 18 = 98. A rain entry like this one, made the same day, is where a weather-delay record starts if the look-ahead schedule slips.
How it works in Conflo
In Conflo's daily logs, the day's weather is pulled in for the job's location, crews copy from the last log and man-hours total themselves, and the log saves as you go, with earlier versions kept. The calendar marks a past weekday with no log, and the day's PDF is filed in Documents.
The bottom line
A daily log is the factual diary of the job, one entry a day, written before you go home.
Count people and hours by company, write what happened without opinion, and never skip a workday.
Sources
- UFGS 01 45 00, Quality Control (August 2023) — Whole Building Design Guide (USACE / NAVFAC / AFCEC). Read October 22, 2026.
- 17.5 Inspection Reports — City of Los Angeles, Bureau of Engineering, Project Delivery Manual. Read October 22, 2026.
Questions
Who writes the daily log?
The general contractor's superintendent, as a rule. Subcontractors often keep their own, and the owner's inspector keeps a separate diary.
Is a daily log the same as a daily report?
Yes. Daily log, daily report and job diary are names for the same record. Federal contracts split it into a production report and a quality control report.
Can a daily log be changed later?
Add to it rather than rewrite it. A log is trusted because it was made the same day, so later corrections should show when and by whom.
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