How to Audit a Commercial Contractor's Bid: Spotting the Padding
Key Takeaways for Commercial Investors
Never accept the initial GMP: A Guaranteed Maximum Price often contains hidden contingencies that protect the contractor, not the owner.
Scrub the Schedule of Values: Look for front-loaded schedules, inflated general conditions, and artificially low allowances.
Hire builder-led representation: An experienced Owner's Representative with general contracting experience is your best defense against construction cost padding.
Receiving the Guaranteed Maximum Price, or GMP, from a General Contractor is a major milestone in any commercial development. It’s the number that either validates your pro-forma or sends you back to the drawing board.
But for developers and out-of-state investors, accepting that initial GMP at face value is one of the most expensive mistakes you can make.
A commercial construction bid is not a simple price tag; it is a complex financial document designed to protect the contractor’s margins. Unless you know how to perform a forensic audit of a commercial contractor's bid, you are likely leaving hundreds of thousands of dollars on the table. Here is how to look past the bottom line and spot the hidden construction cost padding before you sign the contract.
The Illusion of the Guaranteed Maximum Price
There is a common misconception that a GMP protects the owner from cost overruns. In reality, a GMP often protects the contractor by building in layers of hidden contingencies. If the project comes in under budget, the contractor often keeps a percentage of the savings. If it goes over, the assumptions and clarifications section is written with enough allowances and scope exclusions that would expose the Owner to change orders that may provide a windfall for the GC if not managed. .
To truly understand where the risk lies in a GMP, you have to break down the bid line-by-line, understanding exactly what is included in the GMP and equally important, what is excluded.
Reading the Schedule of Values Like a Builder
The Schedule of Values, or SOV, is the DNA of the construction bid. It breaks down the total contract amount into individual work items such as concrete, framing, electrical, and finishes.
Many financial consultants and standard project managers simply check the SOV to ensure the math adds up. But math isn't the problem—the allocation of capital is. Because J. Forrest Development acts as a builder-led Owner’s Representative in Charlotte, NC, we conduct an in-depth Schedule of Values review from the perspective of an active General Contractor. We know exactly what materials cost, the duration of each task, and where the numbers are traditionally inflated.Further, we scrub all exclusions, allowances and assumptions so the Owner is fully aware of complete risk.
When reviewing your next commercial bid, look for these three major red flags.
1. Front-Loaded Schedules
Front-loading occurs when a contractor disproportionately inflates the costs of early-stage work—such as mobilization, site clearing, or demolition—while underpricing the finishing work at the end of the project.
Contractors do this to improve their cash flow early in the project. The danger to the owner is severe: if the contractor defaults or is terminated halfway through the build, you will have already paid out 70% of the budget for only 50% of the completed work, leaving you without enough capital to hire a replacement team.
2. Inflated "General Conditions"
"General Conditions" are the overhead costs required to run the job site. This includes project management salaries, dumpsters, temporary fencing, porta-potties, and site security.
Because these items don't result in a tangible piece of the building, this category is the most common hiding place for construction cost padding. A forensic audit will ask the hard questions: Are they charging full-time rates for a project manager who is only on-site two days a week? Are the dumpster hauling fees marked up 30% above the local Charlotte market rate? We frequently shave significant percentages off a bid simply by scrubbing the General Conditions.
3. Vague Scope Gaps and Allowances
An allowance is a placeholder number for a material or scope of work that hasn't been fully defined yet, such as a $50,000 line item for lobby light fixtures. While sometimes necessary, excessive allowances are a trap.
Contractors will intentionally set allowances artificially low to make their initial bid look highly competitive. Once the project is underway and the real costs are realized, the owner is hit with a massive change order to cover the difference. A thorough bid audit cross-references the architectural drawings with the SOV to ensure every single scope of work is accurately quantified, minimizing the risk of mid-project financial surprises.
Protect Your Pro-Forma Before You Break Ground
You wouldn't buy a commercial asset without a meticulous financial audit. You shouldn't buy a construction contract without one, either.
At J. Forrest Development, we sit on your side of the table. We utilize our decades of active general contracting experience to scrub bids, level competing contractor proposals, and aggressively negotiate the fluff out of your contracts.
Don't accept the first number. Contact our Advisory Team today to request a forensic bid audit and ensure your capital is protected from day one.
Frequently Asked Questions About Construction Bid Audits
What is a Schedule of Values in construction?
A Schedule of Values is a detailed document provided by a contractor that outlines every item of work on a project and its corresponding cost. It is used to justify the total contract price and serves as the baseline for evaluating monthly payment applications and progress draws.
Why do contractors front-load their bids?
Contractors front-load bids to secure more cash flow early in the project. By overcharging for initial phases like mobilization or demolition, they can fund the project with the owner's money rather than their own. This creates a significant financial risk for the investor if the contractor fails to complete the project.
How does an Owner's Representative help with bid leveling?
An Owner's Rep acts as an independent advocate for the investor. During bid leveling, they perform a forensic review of multiple contractor proposals to ensure all bids are based on the exact same scope of work, identifying hidden exclusions, padded General Conditions, and unrealistic allowances before the contract is signed.
