26 lines
1.1 KiB
Markdown
26 lines
1.1 KiB
Markdown
---
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id: 2026-03-29T16:01:12-0400
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title: 2026-03-29 16:01:12
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tags:
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- status/draft
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date-created: 2026-03-29T16:01:12-04:00
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daily: "[[2026-03-29]]"
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---
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# 2026-03-29 16:01:12
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## AACE Estimate Classification
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[Association for the Advancement of Cost Engineering (AACE)](https://web.aacei.org/)
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AACE International Recommended Practice No. 18R-97
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| Estimate Class | Expected Accuracy (Low) | Expected Accuracy (High) |
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| ------------------------------------------ | -----------------------:| ------------------------:|
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| Class 5: Concept Screening | -20% to -50% | +30% to +100% |
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| Class 4: Study or Feasibility | -15% to -30% | +20% to +50% |
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| Class 3: Budget, Authorization, or Control | -10% to -20% | +10% to +30% |
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| Class 2: Control or Bid/Tender | -5% to -15% | +5% to +20% |
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| Class 1: Check Estimate or Bid/Tender | -3% to -10% | +3% to +15% |
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