How to Know If a Contractor Bid Is Complete, And Why Most Aren't
How to know if a contractor bid is complete; and why most aren't.
The bid came in competitive. The contractor has references. The presentation was professional and the number supports the deal. Everyone at the table is comfortable and the project is moving forward.
Except the bid isn't complete. And nobody in that room knows it yet.
This is not a rare situation. It is the default situation. Contractor bids are written to win jobs. A complete bid, one that includes everything the project actually requires is a more expensive bid. A more expensive bid loses to the incomplete one almost every time because the investor is comparing numbers without knowing what each number actually includes. The contractor who wins is usually the one who left the most out.
That's not always dishonesty. Sometimes it's optimism. Sometimes it's a contractor who genuinely doesn't know what he doesn't know. Sometimes it's a deliberate strategy built on the reality that once demo starts and the real scope surfaces, walking away isn't realistic and the owner will absorb whatever comes next. Regardless of the reason the result is the same. The number changes after you're committed and you're the one paying the difference.
What a complete bid actually looks like.
A complete bid is specific where an incomplete one is vague. It names things. It accounts for existing conditions rather than assuming ideal ones. It includes what the code requires not just what the client asked for. It addresses what's behind the walls, above the ceiling, and underneath the slab, not because those things are always problems but because a contractor who has actually looked knows what's there and has priced accordingly.
Vague line items are the first sign of an incomplete bid. "Demo and disposal" with no breakdown of what's being demoed or how much disposal is involved. "Electrical upgrades" with no specification of what the existing panel is, what the new demand requires, and what the utility connection looks like. "Roof repairs" on an eighteen year old roof with visible deterioration. These are not line items. They are placeholders for conversations that will happen later at your expense.
A complete bid has unit costs not just totals. It specifies materials by name, grade, and quantity. It includes allowances for conditions that can't be fully determined until demo, but it names those allowances explicitly and puts a number on them rather than leaving them as open ended surprises. It accounts for code compliance as a line item not as an assumption.
What's missing from most bids.
Structural requirements are the most expensive thing routinely left out of commercial bids. A contractor pricing a tenant buildout is pricing what the tenant asked for. If the existing structure requires modification to support what the tenant asked for additional steel, reinforced connections, load calculations that don't match the existing drawings that work exists whether it's in the bid or not. It shows up when the structural engineer reviews for permit or when the inspector catches it mid-construction. Either way it's a change order you didn't see coming.
Code compliance is the second most common missing item. Building codes change. A commercial space that was compliant twenty years ago may require significant upgrades to meet current code when a permit is pulled for renovation work. Fire protection systems. ADA accessibility. Electrical panel capacity. Egress requirements. Energy efficiency standards. A contractor who is pricing to win will price what you asked for. Whether what you asked for triggers code compliance requirements that double the scope is a conversation that happens later if nobody addresses it upfront.
Existing conditions are where bids go from incomplete to catastrophically wrong. The bid is written based on what's visible. What's behind the drywall, above the drop ceiling, under the flooring, and inside the mechanical chases is assumed to be what it's supposed to be. On a thirty year old commercial building that assumption is almost never fully correct. Outdated wiring. Undersized conduit. Plumbing that doesn't meet current standards. Insulation that doesn't exist. HVAC ductwork that was modified by three different tenants over twenty years without anyone pulling a permit. None of that is in the bid. All of it surfaces during construction.
Site work is routinely underestimated or excluded entirely. Parking lot conditions. Drainage. Utility connections. ADA compliance at the exterior. These items are expensive, unglamorous, and easy to leave out of a bid that's trying to hit a number the investor wants to see.
How contractors write bids and what that means for you.
Understanding how the other side of this works changes how you read every bid you ever receive.
A contractor builds a bid from a scope of work. If the scope is vague the bid will be vague. If the scope doesn't address existing conditions the bid won't either. The contractor is pricing what he was asked to price. What he wasn't asked to price doesn't exist in his number regardless of whether it exists in the building.
This is why the scope of work matters more than the bid itself. A detailed, specific scope of work produces bids that are actually comparable to each other and actually reflect what the project costs. A vague scope produces bids that look comparable but aren't because each contractor made different assumptions about what the vague parts mean. The lowest bid almost always made the most optimistic assumptions. You're not comparing apples to apples. You're comparing one contractor's optimism to another's and calling it due diligence.
The other thing worth understanding is how change orders work. A change order is what happens when something surfaces during construction that wasn't in the scope. Every contractor knows that certain things will surface on every job of a given type. An experienced contractor on a commercial renovation knows that the electrical will need more work than what's visible. He knows the plumbing will have issues. He knows the existing structure will have surprises. He has two choices, price those things into the bid and risk losing to the guy who didn't, or leave them out and capture them as change orders after the contract is signed. The business model of the lowest bidder is often built entirely on change orders.
What strong contractor relationships actually look like.
The investors winning on commercial deals right now are not necessarily paying less for construction. They are paying the right amount because they know what the right amount is before they commit to anything.
That knowledge comes from contractor relationships built on more than a referral and a handshake. A contractor you have worked with on multiple projects, who knows how you operate, who knows you will verify their work and hold them to the scope, who knows you are not going to hand them a vague scope and be surprised when the number changes, that contractor bids differently than the one who is trying to win a job from a stranger.
A contractor who respects the relationship gives you a tighter number because they're not pricing in the risk of dealing with an owner who doesn't know what they're doing. They're also more likely to tell you what's actually in the building before demo starts because they'd rather have that conversation upfront than manage a change order dispute later.
Building those relationships takes time and deliberate effort. It means giving contractors work. It means paying them on time. It means having clear scopes and not changing direction mid-project. It means being the kind of owner a good contractor wants to work for. In return you get honest pricing, priority scheduling, and a phone call when something surfaces that you need to know about before it becomes a problem.
How to actually evaluate a bid before you sign anything.
Read the exclusions first. Every bid has a section that lists what's not included. Most people skip it. That section tells you more about what the project actually costs than the total at the bottom of the page. If the exclusions list is short the bid is probably incomplete. If it doesn't exist the bid is definitely incomplete.
Ask for a line item breakdown of every number over a thousand dollars. Lump sum bids are not bids. They are a number attached to a hope that nothing surprises anyone. A contractor who can't break down their number by line item either hasn't done the estimating or doesn't want you to see how they got there.
Ask specifically about existing conditions. What assumptions did the contractor make about what's behind the walls, above the ceiling, and under the slab. What happens to the number if those assumptions are wrong. A contractor who has a clear answer to this question has actually thought about the project. A contractor who gives you a vague answer about handling it as it comes is telling you something important about how they plan to manage your money.
Ask about code compliance requirements. What does pulling a permit for this scope trigger in terms of mandatory upgrades. A contractor who has done this type of work in this municipality knows the answer. If they don't know the answer they haven't done this type of work here before.
Compare bids by scope not by total. Two bids for the same project that are $100,000 apart are not comparable until you know what each one includes and excludes. The cheaper bid might be cheaper because it left out $150,000 worth of work. The more expensive bid might be the accurate one. You cannot know by looking at the totals.
What this costs you when you get it wrong.
A commercial project with an incomplete bid doesn't fail dramatically. It fails gradually. The change orders come in one at a time, each one individually justifiable, each one small enough to approve without stopping the project. By the time the cumulative impact is visible the project is too far along to walk away from and too expensive to be what the underwriting said it would be.
The deal that penciled at $800,000 in renovation costs is now a $1.1 million renovation. The return that worked at $800,000 doesn't work at $1.1 million. The equity that was supposed to be there at stabilization isn't. The exit that made sense on paper doesn't make sense at the actual cost basis.
That's not bad luck. That's an incomplete bid that nobody caught before the contract was signed.
The window that matters.
There is a window between when a deal is being evaluated and when the contract is signed where everything can still be known and accounted for. The scope can be built correctly. The bid can be reviewed against that scope. The gaps can be identified and priced before they become change orders. The real number can be known before the underwriting is locked.
That window closes the moment the contract is signed. After that the options are absorb it or fight about it and neither one gets the money back.
Thirty years of commercial construction, as a general contractor, a developer, an active investor, and an expert witness on the disputes that happen when this goes wrong, have taught me one consistent truth about contractor bids.
What's not in them costs more than what is.
If you have a commercial deal under evaluation and a bid on your desk and you want to know what's missing before you commit to a number that might not survive contact with the real scope — that is exactly the conversation worth having before you sign anything.
Fifteen minutes. calendly.com/jeph-reit