What construction estimating actually delivers
Most projects fail or succeed before a single piece of steel is set, in the estimate. A complete, well-documented construction estimate gives you three things at once:
- A defensible price — the number you put on the bid line, supported by a paper trail.
- A buy-out plan — quantities organized so you can solicit subcontractor and supplier quotes against your own scope, not theirs.
- A risk register — every assumption, exclusion, and unknown documented before contract signature, so scope disputes during construction stay narrow and fact-based.
Vortex Estimating produces all three on every engagement. We do not deliver a single number and a Schedule of Values — we deliver an audit-grade workbook that walks line by line from the drawings to the bid.
What’s included in a Vortex construction estimate
Every full construction estimate ships with the following components:
Quantity takeoff
A complete inventory of every measurable item on the plans — concrete cubic yards by mix design, framing lumber by member size and length, roofing squares by system, ductwork linear feet by gauge and pressure class, conductor lengths by size, and so on. Takeoffs are produced in PlanSwift, Bluebeam Revu, or Trimble Accubid depending on your workflow, with plan markups color-coded by trade or system so any reviewer can verify what was counted in under thirty seconds.
Material pricing
Each takeoff quantity is priced using current cost data — RSMeans Construction Cost Data (with city cost modifier applied for your project location), BNi Building News pricebooks, regional supplier quotes where the project warrants direct vendor input, and your own historical pricing if you maintain a pricebook. Material waste factors are applied per CSI standards (concrete +5%, drywall +10%, framing +8-12% depending on plan complexity).
Labor
Labor is priced separately from material — productivity figures (man-hours per unit) come from RSMeans crew productivity tables, NECA labor units for electrical, MCAA labor units for mechanical, or your own labor history. Labor rates use either local market rates or, for public work, the applicable prevailing-wage or Davis-Bacon classification rate.
Equipment
Equipment costs include rental, fuel, operator, and mobilization where applicable. We price using current RSMeans equipment rental rates or your equipment costing if you self-perform with owned fleet.
Subcontract pricing
For trades you intend to sub out, we provide either a subcontract budget number (built up from a parallel takeoff and our standard sub markup) or coordinate solicitation of sub quotes against the takeoff package we prepare.
Overhead, profit, bonds, insurance, contingency
General conditions, jobsite overhead, home-office overhead, profit, bonding cost, builder’s risk and general liability insurance, and contingency are itemized as separate add-on percentages so you can adjust them without re-running the estimate.
Schedule of Values
A bid-ready Schedule of Values organized to AIA G702/G703 conventions, suitable for direct submission with your bid or contract.
Bid clarifications and qualifications log
Every assumption, exclusion, and clarification noted during the takeoff is captured in a structured log. This is the document that protects you in change-order negotiations six months from now.
AACE estimate classes — what you’ll get and when
We classify every estimate against the American Association of Cost Engineers (AACE International) Recommended Practice 18R-97 estimate class system. This is the same framework used by the major construction-management firms (Bechtel, Skanska, Turner) for cost certification.
| AACE Class | Design Maturity | Typical Accuracy | Use Case |
|---|---|---|---|
| Class 5 | 0-2% complete | -50% to +100% | Order-of-magnitude, screening |
| Class 4 | 1-15% | -30% to +50% | Schematic, study |
| Class 3 | 10-40% | -20% to +30% | Budget authorization |
| Class 2 | 30-70% | -15% to +20% | Control, bid/tender |
| Class 1 | 65-100% | -10% to +15% | Final bid, claim |
When you engage us, we tell you up-front which class the estimate will be — based on the drawings you provide — so there are no surprises about precision.
How we work with different contractor types
General contractors
GCs typically engage us for full-trade estimates on hard-bid jobs, design-assist budgeting on negotiated work, and change-order pricing during construction. We can deliver a complete estimate organized by CSI division, by sub-trade package, or by the contractor’s own internal cost code structure.
Subcontractors
Subs use us for trade-specific takeoffs and estimates in their discipline — electrical conduit and gear schedules, mechanical equipment and ductwork, concrete cubic yards and rebar tonnage, etc. We deliver in the format your estimating software expects (Accubid for electrical/mechanical, Sage for general construction, Excel for almost everything else).
Owners and developers
Owners use us for independent cost validation during contract negotiation, value-engineering exercises, and budget development for feasibility. We produce the estimate; you use it to pressure-test what the contractor is telling you.
Construction managers
CMs engage us for trade-package buyout support, change-order review, and schedule-impact cost analysis. We integrate with the CM’s pricing format and reporting cadence.
Software we work in natively
Every Vortex estimator works in multiple platforms. If your workflow runs on a specific tool, we adapt to it rather than asking you to adapt to us:
- Quantity takeoff: PlanSwift, Bluebeam Revu, On-Screen Takeoff (OST), Trimble Accubid Quote, Square Takeoff, STACK
- Estimating: Sage Estimating, Trimble Accubid, ConEst IntelliBid, McCormick, ProEst, RSMeans Online
- Pricing data: RSMeans, BNi, Compass International, Means Heavy Construction
- BIM-integrated: Autodesk Quantification, Navisworks, Revit, IFC viewers
- Insurance/restoration: Xactimate, Symbility
- Plan distribution: Procore, Bluebeam Studio, PlanGrid, Autodesk Construction Cloud, BuildingConnected