On a federal-aid highway job or a state-funded bridge, the lowest number in your bid tab is not the number you can award. The award-able bid is the one that survives compliance: the sub's DBE participation counts toward the goal, their crews are priced at the right prevailing wage, their bond and insurance are in force, and their paperwork actually responds to what the solicitation asked for. Miss any of those and the "low" bid becomes a liability that lands on the GC, because flow-down obligations make the prime responsible for what the sub does or fails to do. That is why subcontractor bid analysis on public work has to weigh compliance with the same rigor it weighs price, instead of treating it as a checkbox you tick after you have already decided.

Compliance is one of the six dimensions Bid Reasoner scores — price, scope, schedule, compliance, performance, and risk — and on public projects it is frequently the one that reorders the field. This is how to read it.

DBE/MBE goals and the good-faith effort

Most federally assisted contracts carry a Disadvantaged Business Enterprise (DBE) goal, and many state and local jobs add their own MBE/WBE participation requirements on top. The goal is a percentage of the contract value that must go to certified firms. As the prime, you do not just hope to hit it — you have to demonstrate either that you met the goal or that you made a documented good-faith effort to meet it, and that documentation is part of what makes your overall bid responsive to the owner.

That changes how you read sub bids. A scope package where your only competitive sub is a non-certified firm is a different decision than one where a certified DBE is within striking distance on price. The certified bid might cost a few points more and still be the right award, because it moves you toward the goal and reduces the burden of proving good-faith effort across the rest of the job. The questions that belong on every public-work sub bid:

  • Is the firm currently DBE/MBE/WBE certified in the right directory for this owner, and for the work it is actually performing? Certification for trucking does not cover structural concrete.
  • Does the dollar value count as committed, or is the sub a pass-through that subcontracts the real work back out? Pass-through arrangements do not count toward the goal and create exposure.
  • If you fall short on a package, did you solicit certified firms, share plans, and break out scope into biddable pieces — the concrete acts that document a good-faith effort?

None of this lives in the price column. It lives in the bid documents, the certification status, and the record of who you solicited — which is exactly the material a compliance score has to capture per bidder, not in your head.

Prevailing wage and Davis-Bacon exposure

Public construction almost always carries a prevailing-wage obligation — Davis-Bacon on federal-aid work, a state "little Davis-Bacon" statute on state-funded work, or both. The owner publishes wage determinations by labor classification, and every worker on covered scope has to be paid at least that rate plus fringes, with certified payrolls submitted to prove it.

The bid-time risk is a sub who priced the work as if it were private. A grading sub quoting a number that only pencils at open-shop, off-determination rates is not actually cheaper — they are exposed, and through flow-down so are you. When that gap surfaces, it surfaces as one of three things: the sub eats the difference and gets shaky on the job, the sub comes back for a change order, or certified payrolls come up short and the owner withholds payment from the prime. A prevailing-wage signal worth reading at bid time:

  • A total that sits well below the field. A bid more than 20% under the others can mean a real efficiency — or a sub who did not carry prevailing-wage labor. The deterministic total-bid outlier flag surfaces exactly this gap so you can ask before you award.
  • Labor classifications that do not match the determination. If the sub's basis of estimate names classifications or rates that are not on the wage determination for this job, the price is built on the wrong floor.
  • No mention of certified payroll. A sub who has never run Davis-Bacon payroll is a schedule risk even if their number is honest, because the paperwork burden is real.

Bonding and insurance

Public owners typically require performance and payment bonds at the prime level, and most GCs flow a bonding requirement down to subs above a dollar threshold. Bonding is not a formality — a sub's bonding capacity is a market's verdict on whether that sub can finish the work. A bid from a firm that cannot get bonded for the package size is telling you something the price will not.

At bid evaluation the questions are concrete and they belong in the compliance dimension, not buried in a side email:

  • Can the sub provide the required performance and payment bond for this package value, and is there a bid bond where the solicitation required one?
  • Are insurance limits and additional-insured/waiver-of-subrogation requirements met, or is the sub quoting against limits below what the contract flows down?
  • Does prequalification status match the owner's roster for this work type and dollar size? An unprequalified sub on a job that requires it is non-responsive regardless of price.

Responsive vs. responsible — not the same test

Public procurement turns on two distinct words that estimators sometimes blur. A responsive bid is one that conforms to the solicitation — it bid every required item, included the required forms and acknowledgments, and took no exceptions that change the deal. A responsible bidder is one with the capacity, track record, financial standing, and integrity to actually perform. A bid can be the lowest and still fail on either axis, and the two failures look different on paper.

Responsiveness is largely mechanical: did the sub acknowledge every addendum, sign the required certifications, price the base bid and the alternates the way the package asked, and avoid a material exception that re-trades the scope? A missed addendum acknowledgment or an unpriced required item can make a bid non-responsive on its face. Responsibility is a judgment about the firm: bonding capacity, the DBE and prevailing-wage compliance history above, completed work of similar scale, and no record that would disqualify them. The lowest-responsible-bidder standard, the default on most public work, is the union of both tests — lowest price, among bidders who are both responsive and responsible. Reading a public bid tab without separating those two filters is how a GC ends up defending an award it should never have made.

How the compliance score and the audit trail capture it

Spread across a package of eight or twelve sub bids, all of the above is a lot to hold at once: certification status and committed dollars per bidder, prevailing-wage exposure on the low numbers, bond and insurance and prequalification, and the responsive/responsible filter on top. Done by hand near a deadline, something slips — usually the addendum nobody re-checked or the certification that lapsed last quarter.

Bid Reasoner reads each bid against the package and scores the compliance dimension per bidder alongside the other five. It pulls the bonding, insurance, DBE/MBE, and prequalification signals out of the bid documents, holds them next to what the solicitation requires, and surfaces the gaps as page-cited evidence quotes — the exact line in the exact bid, not a summary you have to take on faith. The four deterministic risk rules run across the leveled field at the same time: an unbalanced unit price at or below $1.00, a peer outlier above 2x or below 0.5x the peer median, a total-bid outlier more than 20% off the field (the prevailing-wage tell above), and a front-loaded mobilization over 10% of the total.

You then pick a decision mode — on public work, Lowest Responsible Bid maps directly to the standard, though Best Value, Lowest Risk, Scope Completeness, Budget-Constrained, and a custom weighting are there when the package calls for it — and the tool returns a ranked recommendation. If your judgment overrides the ranking, the forced-override audit trail logs the override with your written reason. That record is the point on public work: when an owner, a partner, or a disappointed low bidder asks why you passed on the cheapest number, the answer is a documented compliance gap with the page citation behind it, captured at the moment you decided rather than reconstructed months later. The work product includes the generated Word documents — the award memo and the evidence report among them — that you can hand straight to the owner.

Want a fast first pass before you commit a package to a full analysis? Run the field through the free bid risk scorecard and see which bids trip the deterministic flags.

None of this replaces a contract administrator's reading of the solicitation, and it is not legal advice on your DBE obligations. It does make sure the compliance picture is on the table next to the price — scored, evidenced, and logged — before the award is made instead of after it is questioned. On public heavy-civil work, that is the difference between a clean award and a protest. If compliance is where your public bids actually get decided, that is exactly the work subcontractor bid analysis is built to carry.