Every Apex estimate ships with a 100% accuracy guarantee. That guarantee is backed by a documented quality-check process and a tracking loop: we compare every completed project against its final closed-out field costs. Across more than 5,000 delivered projects, our estimates consistently land within the 2–5% band contractors expect from their strongest in-house estimators — and the tracking data is how we keep it that way.
What "100% Accuracy" Means at Apex
A bid that is 5% too high loses the job. A bid that is 5% too low is worse — you win it and lose money. For us, 100% accuracy means your number reflects the true cost of the work in your market: every quantity measured from the actual drawings, every labor hour built from regional productivity data, every material priced to the project's zip code, and every line item checked by a second set of eyes before delivery.
The Four-Step Verification Process
Step 1: Takeoff Reviewed Against the Full Drawing Set
After the quantity takeoff is complete, a second estimator walks the marked-up plans sheet by sheet against the architectural, structural, and MEP drawings. The goal is to catch anything the first pass missed — a panel schedule that implies two feeders instead of one, a fixture schedule that contradicts the floor plan, or a spec note that changes the wiring method. Ambiguities are flagged and clarified rather than guessed at.
Step 2: Labor Hours Calibrated to Regional Productivity
Labor is where estimates drift most. We build labor hours from productivity data calibrated to the project's region and project type, then validate the hours per man-day against the scope. A 500,000-square-foot industrial build in Texas does not install at the same rate as the same square footage in New York — the estimate must reflect that.
Step 3: Zip-Code-Based Pricing, Not National Averages
Material and labor rates are pulled from RSMeans and our own maintained cost database, then adjusted to the project's specific zip code using our proprietary pricing factors. Local supplier pricing, prevailing-wage environments, and market conditions all move the number. We apply those adjustments before the estimate is assembled.
Step 4: Senior Review Before Delivery
Every estimate passes a senior review before it ships. Marcus Bennett, Founder and Chief Estimator, personally reviews every major commercial and industrial estimate. The review checks the takeoff against the drawing set, verifies labor assumptions and pricing adjustments, and confirms the deliverables — Excel line items, PDF summary, and color-coded marked-up plans — are complete and consistent.
How We Measure Accuracy Against Real Costs
The guarantee only means something if it is measured. Here is the loop that keeps the number honest:
- Tracked against final closed-out costs: completed projects are reconciled against actual field costs — purchase orders for materials, payroll for labor.
- Variance logged per project and project type: we record where each estimate landed relative to the final number, organized by project type so we can see systemic patterns, not just individual results.
- Corrections fed back into the pricing database: when a line-item category drifts, the cost factor is corrected at the source so the next estimate starts from a better number.
- Published results: case studies on this site show real delivered outcomes, including a $4.2M commercial bid won at 2.1% variance, a 240,000 sq ft industrial project where our estimate uncovered $180,000 of scope the contractor's own number had missed, and a 520-unit multifamily estimate delivered in three days.
What Contractors Report Back
Our residential clients report their Apex numbers land within 3–5% of actual field spend. Commercial and industrial clients see the same band — and the estimates they lose are typically lost on competitiveness, not on accuracy. The most common feedback we hear is that the line-item detail makes their bid package stronger with owners and GCs, because the numbers are defensible line by line.
Free Revisions: Our Risk, Not Yours
Scope changes after delivery are re-measured free of charge. If the drawings change, we revise the affected line items and re-send the deliverable — no re-quote, no surprise invoice. That policy exists because our accuracy depends on the estimate matching the final scope, and it keeps the risk on our side of the table.