How accurate should a concrete takeoff be? (And why ±2% is the right benchmark)
What ±2% accuracy actually means on a real concrete bid, where takeoff errors typically creep in, and the QA checklist senior estimators run before delivery.
8 articles · 8 categories
Estimating Insights
Construction estimating articles, guides, and expert analysis from our team.
AACE estimate classes explained: when to use Class 1 through Class 5
A practical guide to the AACE International 18R-97 estimate class system: design maturity, accuracy ranges, and the right class for feasibility, bid, and control estimates.
RSMeans city cost modifiers for 2026: what changed, what didn't
Quarterly RSMeans city cost index updates for major US metros, where 2026 modifiers shifted most, and how that affects your bid pricing.
Bidding public work: a contractor's checklist for prevailing-wage projects
Davis-Bacon classifications, state prevailing-wage schedules, certified payroll, and the most common scoping errors that sink first-time public bidders.
Outsourced vs in-house estimator: the actual cost math
A side-by-side cost comparison: hiring a senior estimator (W-2, benefits, training, downtime) vs outsourcing per project or per retainer. Real numbers, not hand-waving.
Estimating post-tensioned slabs: what most takeoffs miss
Post-tensioned slab estimating is its own discipline. The five line items that get under-counted most often, and the SFCA realities of PT formwork.
NECA labor units in 2026: what's changed for electrical estimators
The latest NECA Manual of Labor Units edition, what shifted vs the prior, and how to apply condition modifiers without padding your bid.
BIM-based quantity extraction: how to use Revit models in real estimates
When to trust the model, when to override the model, and the model-completeness tests every BIM estimator should run before pulling quantities.
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