How to read a commercial construction bid

Two commercial construction bids that are ten percent apart look like a simple choice: take the lower one. They almost never mean the same thing, and reading a bid closely enough to know why is the difference between comparing two real numbers and comparing two numbers that happen to be printed the same way.

Start with scope, not price

Before comparing any numbers, compare what each bid actually includes. One bidder's number might cover a scope of work that another bidder priced separately, or left out entirely. A lower total that excludes site work someone else included is not actually lower once you add that scope back in.

Look for what is missing, not just what is there

The most expensive gaps in a bid are usually the things left unstated rather than the things priced wrong. Check whether each bid covers permitting fees, utility connections, site work, and cleanup, since these are common places for scope to quietly disappear from a lower number.

Read allowances carefully

An allowance is a placeholder budget amount for a selection that has not been finalized, a finish, a fixture, a piece of equipment. Two bids with identical allowance line items can still differ wildly in what that allowance is actually enough to buy. Ask what each allowance assumes, not just what number it lists.

Understand what drives a low number

A bid can be low because a contractor found real efficiency, or because it is missing scope, using thinner allowances, or padding the schedule with the expectation of change orders later. None of these are always true of a low bid, which is exactly why scope comparison matters more than the bottom line by itself.

Ask about change order history and process

A proposal will not show you how a contractor actually handles change orders once work starts, but a direct question will. Ask how changes get documented and priced, and ask for examples from past projects. A contractor whose bids come in low but whose change orders regularly bring the final number back up is not actually the cheaper option.

Compare the schedule, not just the price

A bid with an unrealistic schedule attached to a competitive price is not a better deal; it is a different kind of risk. Compare the schedule each bidder is proposing alongside the price, and ask how confident each one actually is in the date they wrote down.

Watch the payment schedule too

A payment schedule tied to real milestones, foundation complete, framing complete, drywall complete, protects you better than one tied only to arbitrary calendar dates, because it ties your payments to verifiable progress rather than the passage of time. Compare how each bidder structures payments alongside the price itself, not as an afterthought once you have already picked a favorite, since a badly structured payment schedule can put you at risk even on a bid with an otherwise fair price.

Get help if you need it

If comparing bids on your own feels uncertain, a construction manager or an owner's representative can review bids on your behalf and normalize them to the same scope before you compare pricing. That review usually costs far less than the gap a misread bid can create, and it is money well spent on any project large enough that a scope mismatch would actually hurt.

We are licensed and insured, with over 20 years of combined experience building and pricing commercial projects, and we are glad to walk through a bid with you, whether it is ours or someone else's, so you know exactly what you are comparing.