How to review construction drawings for errors
A systematic approach to catching mistakes before they turn into expensive field problems.
If you've ever seen a $50,000 change order that started as a simple coordination miss, you know why drawing review matters. Finding errors before they reach the field is one of the best investments you can make on any project. The cost of fixing mistakes jumps by 10x once construction starts. This guide walks you through a review process that actually catches the issues that turn into RFIs and change orders.
Step 1: Figure Out What You're Looking For
Before you dive into the drawings, get clear on what type of review you're doing. Each one has a different focus:
Step 2: Start with the Big Picture
Don't jump straight into the details. Start at the project level first:
- 1.Check the drawing index. Are all the sheets you'd expect actually there?
- 2.Look at revision dates. Make sure you're reviewing the latest set.
- 3.Read the general notes on the first sheet of each discipline
- 4.Verify project info (address, owner, scope) is consistent across all sheets
- 5.Confirm the scale is noted and stays consistent throughout
Step 3: Compare Across Disciplines
The really expensive errors show up where disciplines don't match. Overlay these drawings and look for conflicts:
Step 4: Focus on the High-Risk Areas
Some areas cause way more problems than others. Give these extra attention:
Step 5: Make Sure Schedules Match Plans
Schedules and plans get created separately and tend to drift apart over time. Check that:
- Door tags on the floor plan exist in the door schedule (and the other way around)
- Window types match between elevations and schedules
- Room names and numbers are consistent across all drawings
- Finish schedules reference finishes that are actually specified
- Equipment schedules match what's shown on the plans
Step 6: Check Dimensions and References
Dimension errors cause immediate problems in the field. Make sure to verify:
- Dimension strings add up to the total shown
- Overall building dimensions match the site plan
- Detail callouts reference details that actually exist
- Section cuts are taken where they're shown on plan
- Specification section references are valid
Step 7: Document What You Find
Good documentation turns your review into action. For each issue you find:
- 1.Note the exact sheet number and location
- 2.Describe the issue clearly (focus on what's wrong, not how to fix it)
- 3.Categorize by severity: critical, major, or minor
- 4.Assign it to the responsible discipline
- 5.Track resolution status through subsequent revisions
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