Even experienced estimators make mistakes. The difference lies in having a system that catches them before they reach the client or get submitted as a bid.
A single typing error or missed addendum can turn a profitable job into a financial loss.
What Quality Control Involves
A proper review process goes beyond checking the math. It requires a structured checklist:
- Quantity verification: Verifying that the takeoff quantities align with the scale and typical ratios of the project.
- Drawing cross-checks: Confirming that the scale settings on your takeoff software match the drawing sheet scales.
- Scope confirmation: Cross-referencing specifications to ensure the correct material strengths and grades are selected.
- Unit validation: Checking that items are listed in the correct units, such as square feet instead of square yards.
- Report review: Ensuring that excel formulas and summaries are functioning correctly.
At Takeofix Solutions, we run every takeoff through a secondary estimator review. This ensures that another set of eyes verifies the counts against the plans.
Common Issues Found During QC
- Duplicate measurements: Counting the same walls or slabs on different sheets due to overlapping drawings.
- Missed drawing revisions: Working off outdated plan sets because addenda sheets were not swapped out.
- Incorrect scaling: Applying a default 1/4-inch scale to a sheet that was printed at a custom or half-size scale.
- Incomplete scope coverage: Missing items that are mentioned in the specifications but not drawn on the plans.
Final Thoughts
Quality control is not an extra step. It is an essential part of producing reliable takeoffs and estimates. Setting up a standard checklist for every bid is the best way to protect your profit margins.