“It wasn’t what we missed that cost the project millions. It was what we never clarified—because we assumed someone else had.”
Bid documents arrive with stamps, drawing sets, and design intent narratives labeled “Issued for Pricing.” But seasoned estimators know better. These documents of ten mask gaps, inconsistencies, and ambiguity—and when scope isn’t clearly defined, numbers become assumptions, and assumptions become liabilities.
Every estimator has felt it: that gnawing uncertainty in early design. No finish schedule, missing door hardware, and mechanical sheets that conflict with structural steel. And yet, the client wants a number.
That number becomes the benchmark. And if the scope wasn’t clearly established when it was created, that benchmark is built on quicksand.
“You can’t price what you can’t define. And if you don’t draw the line, someone else will—and they’ll send you the bill.”
The Estimate Is a Contractual Minefield
Let’s be honest—once the estimate is submitted, it’s often treated like a fixed contract. Any gaps, inconsistencies, or misinterpretations in scope will come back around—only now with legal weight, cost implications, and blame attached.
That’s why the most important part of an estimate is often not the total cost. It’s the inclusions, exclusions, and assumptions.
A well-crafted list of clarifications transforms an estimate from a guess into a roadmap. It shows what you priced, what you didn’t, and where you had to make judgment calls. These aren’t disclaimers—they’re defensive shields.
Scope Is a Battlefield
In construction, there’s often a quiet but dangerous assumption that “someone” is handling each piece of the puzzle. That’s how scope overlaps, or worse—gaps—emerge.
- Did the civil engineer or MEP handle utility tie-ins?
- Who’s furnishing that specialty equipment?
- Is low-voltage infrastructure part of Division 26 or Division 27?
Without a clearly defined scope boundary, finger-pointing becomes inevitable.
An estimator’s role is to shine a light on those dark corners. To draw a line—figuratively and literally—around what’s included and what’s not. If it’s not written, it’s not protected.
Scope Creep Doesn’t Knock. It Slithers.
Scope creep never announces itself. It drips in quietly:
- “Can you just throw in a canopy?”
- “We thought you were handling the casework blocking.”
- “Didn’t you include extra trench depth for the unforeseen?”
By the time these statements surface, the damage is done. The estimate—the one that never accounted for them—has already been approved.
A vague estimate leads to vague expectations. And vague expectations lead to costly change orders. The only cure is clarity.
Estimators Are the Guardians of Clarity
Estimators are often seen as number crunchers, but in reality, we’re clarity enforcers. Our job isn’t just to provide a total—it’s to provide a narrative.
- We interrogate design gaps.
- We validate scope interpretation.
- We highlight potential pitfalls in assumptions.
- We communicate openly – long before construction begins.
We are the first risk managers on the project. Because long before the PM holds a budget meeting, we were the ones warning: “We’re missing scope here. Let’s clarify it now.”
Conclusion: Draw the Line, or Live with the Fallout
An estimate without boundaries is like a contract without definitions. It may look complete, but it’s built on soft ground.
Drawing that line means:
- Calling out scope assumptions.
- Defining what’s included (and what’s not).
- Elevating unclear areas before they become change orders.
It’s tempting to “just price what’s shown.” But what’s shown is rarely what’s expected. And what’s expected, if left unspoken, becomes your problem.
Asking questions, documenting assumptions, and outlining responsibilities upfront prevents the inevitable “I thought that was included” moment—turning disputes into productive conversations.
So draw the line. Before you draw the number.
About the Author: Andrew Kleimola is a Certified Estimating Professional with over 35 years of experience in construction and cost consulting. He currently leads estimating efforts as part of the Infrastructure & Capital Projects (IC&P) team at Accenture, where he serves as an Independent Cost Estimator and Owner’s Representative on complex aviation, infrastructure, and public-sector projects.
