Your Bid Was the Low Number but Something Feels Off

Why this matters

You bid a commercial job, the general contractor or owner tells you that you are the low number and they want to award it, and instead of relief you feel a knot. That knot is worth listening to. The most expensive jobs a shop ever takes are the ones it won by being low because it made a mistake, missed a page, or misread the scope. Being low bidder is only good news if you are low because you are efficient, not because you are wrong. This tree is the gut-check to run before you sign, while you still can walk.

Start here: do not sign yet

Winning is not a deadline. Before you countersign anything:

• Ask for a short window to confirm your number. A day or two to "review scope before we execute" is normal and reasonable.
• Never let "we need it signed today" rush you past the check. Pressure to sign instantly is itself a small red flag.

Branch one: are you low, or alone at the bottom?

The spread between bids tells you a lot.

• If your number is close to the next bidder or two, you are probably in the right range and just sharpest. That is a good low.
• If you are far below the next bidder, a large gap between you and the field, stop. A big gap usually means you and everyone else are not pricing the same job. The odds are that you missed something they caught, not that they all overpriced.
• If the owner will not share the spread, judge by your own review instead, and weight the next checks more heavily.

Branch two: re-verify the scope you priced

Walk the documents again, cold.

• Confirm you have every page, addendum, and drawing. Bids are often revised by addenda issued late; pricing an old set is a classic miss.
• Re-read the specification, not just the drawings. Scope hides in the written spec: a grade of material, a testing requirement, a warranty term that carries cost.
• Check the exclusions and assumptions in your own bid. Did you exclude something the contract actually requires you to include?

Branch three: re-check the takeoff and the math

The gut knot is often a quantity or a transcription error.

• Re-run the takeoff on the biggest cost drivers. A units error on the largest line swamps everything else.
• Check the obvious transcription traps: a dropped zero, a line left out of the total, a per-unit price entered as a per-job price.
• Confirm labor is priced at the right rate. On a prevailing wage job, did you price the mandated wage or your normal wage? (See the related prevailing wage articles.)

Branch four: re-check the conditions that raise cost

Commercial jobs carry cost drivers residential does not.

• Schedule: are you required to work after hours, in an occupied space, in phases, or to a compressed timeline? Each breaks the productivity you assumed.
• Site logistics: access, staging, security, escort requirements, upper floors without a working elevator.
• Contract terms: retainage held until closeout, slow net terms, liquidated damages for late completion. (Retainage is a percentage of each payment withheld until the job is accepted.)
• Bonds and insurance upgrades you did not price.

Branch five: decide

• If the review confirms your number, sign with confidence. Being efficient is a real edge, and now you know that is why you are low.
• If you find a small, survivable gap, decide whether you can absorb it or whether the client will accept a corrected number for a clear reason (a missed addendum is often correctable before award).
• If you find a large error, it is far cheaper to withdraw or correct the bid than to perform a job that loses money on every unit. A bid bond may cost you if you walk after award (see the related bond article), but eating a mispriced contract usually costs far more.

Ordered recap

1. Do not sign yet; buy a short window to confirm.
2. Read the spread: a big gap to the next bidder means recheck hard.
3. Re-verify scope: all pages, addenda, and the written spec.
4. Re-run the takeoff and check for transcription errors.
5. Re-check schedule, logistics, and contract terms for missed cost.
6. Sign if it holds; correct or withdraw if it does not.

References

• See related: Why the Lowest Bid Often Loses Money; Bond This Job or Walk Away
• Associated General Contractors (AGC) bid-review and estimating practice
• Trade-standard practice for bid verification and addenda management