Riverside Contracting built its bids in Excel. One bid on a $1.5 million project came out $50,000 low because a formula skipped a line item. The client noticed, Riverside explained it, and the mistake still left an impression of carelessness that nearly lost them the contract.
“With APARBooks, we don't have to worry about embarrassing mistakes in our bids. It's taken a huge weight off our shoulders, letting us focus on the project rather than double-checking formulas.”
— Riverside Contracting
The company
Riverside Contracting is a general contractor doing large-scale commercial builds, with a team of project managers and estimators and a reputation for quality. Like most contractors, the company depends on accurate bids to win work and stay profitable, and a simple math mistake in a bid can hurt both.
The challenge: math errors in Excel bids
In a competitive market, small errors carried real weight. Building complex calculations in Excel led to incorrect sums, misplaced cells, and wrong formulas.
The $1.5 million bid that came in $50,000 low almost cost Riverside the contract. On another job, a minor calculation error caused Riverside to underbid, which squeezed the project's profit margin and left them stretched to cover expenses. When a bid error goes unnoticed, it carries into the actual project and affects budget allocation and resource management. Across multiple bids, the small mistakes compound.
The APARBooks solution
Riverside turned to APARBooks. The system calculates all sums, project costs, and retention rates automatically, so there are no manual formulas to get wrong. Every input, from material costs to labor estimates, is calculated in the platform. Automating the math removed the error risk and let Riverside present bids without second-guessing the figures.
The results
Riverside cut manual bid errors sharply, which improved both accuracy and how the company looks to clients. That built client trust and tightened financial control, so Riverside can bid more competitively without putting margins at risk.
Frequently Asked Questions
How do math errors in a bid hurt a contractor?
An overstated bid looks careless to the client and can cost the contract, as Riverside's $50,000 error nearly did. An understated bid wins the work but squeezes the project's profit margin. Either way, the error carries into the project's budget.
How does APARBooks prevent bidding errors?
APARBooks calculates all sums, project costs, and retention rates automatically from inputs like material and labor estimates, so there are no manual Excel formulas to misplace or miswrite.
What is a realistic example of a bidding math error?
Riverside Contracting's bid on a $1.5 million project came out $50,000 low because a formula overlooked a key line item.
Built for Contractors. Built for Construction Accounting.
APARBooks is purpose-built construction accounting software for general contractors and bookkeepers. Manage job costing, AIA progress billing, subcontractor payments, retainage, change orders, lien compliance, and WIP reporting in one place.
