How to read a contractor's bid — and compare three of them honestly

The standard advice is to get three bids. It's good advice and it's incomplete, because it skips the part that matters: three bids for a renovation are almost never bids on the same job. One includes the electrical upgrade, one assumes you handle it, one didn't notice it was needed. The spread between them tells you nothing until you've made them describe identical work.

That process has a name in commercial construction — bid leveling — and it's most of what a homeowner is missing when they're staring at three numbers that are $22,000 apart.

Start with what's missing, not what's priced

Read each proposal looking for absences rather than numbers. On a kitchen, for example:

• Who's disconnecting and reconnecting the appliances?
• Is the electrical panel being touched, and if the inspector requires an upgrade, whose cost is that?
• Does anyone own the flooring transition into the next room?
• Who's patching and painting the ceiling after the soffit comes out?
• Is cabinet installation in the same bid as cabinet supply?
• Who's responsible for the dumpster, and how many pulls are assumed?

Every one of those is a real line of cost. Whoever left it out of their bid has a lower number and the same job to do later, which is where change orders come from.

Allowances: the most common reason a bid is wrong

An allowance is a placeholder. The contractor doesn't know what tile you'll pick, so they carry a number for it. That's legitimate and unavoidable early on. The problem is that allowances are where bids quietly separate.

If one bid carries a $4,000 cabinet allowance and another carries $12,000, the second bid looks $8,000 worse while being more honest about the kitchen you described. You will still spend what the cabinets cost. The only thing the low allowance bought you was a more pleasant afternoon.

Also ask what happens to markup when you exceed an allowance. On some contracts, overages carry the full overhead and profit percentage. On others they're passed through at cost. That single clause can be worth thousands on a kitchen where you're realistically going to exceed at least two allowances.

Exclusions are the fine print that isn't fine

A well-written proposal lists what it does not include. On Long Island the recurring ones:

• Asbestos or lead abatement in pre-1980 houses
• Structural work revealed after demolition
• Code upgrades triggered by the work — panel, smoke and CO detectors, egress windows
• Engineering or architectural drawings
• Permit and filing fees
• Anything outside the room, including the path the crew walks through

A bid with no exclusions section is not a bid with no exclusions. It's a bid where the exclusions are unwritten, which means they'll be discussed for the first time when they happen — with the wall already open and you in no position to negotiate.

Build a leveling sheet

The mechanic is simple and almost nobody does it. Put the scope items down the left side of a page, one row per real piece of work. Put the three bidders across the top. Fill in what each one priced. The empty cells are your answer.

Scope item	Bid A	Bid B	Bid C
Demolition & disposal	included	included	by owner
Electrical rough + panel	included	excluded	included
Cabinet allowance	$12,000	$4,000	$10,500
Countertop	included	allowance	excluded
Permit & filing	included	excluded	excluded

Once the sheet is filled in, add the missing items back into the bids that skipped them, at the price the other bidders quoted. The numbers usually converge dramatically — and the bid that looked cheapest often isn't the one that ends up lowest.

What a big spread actually means

When leveled bids still differ by a wide margin, there are only a few explanations, and it's worth knowing which one you're dealing with:

• Different labor assumptions. One contractor thinks it's a four-week job, another thinks six.
• Different risk pricing. An unknown that one bidder covered and another gambled on.
• Different markup. Same costs, different margin.
• Different busyness. A contractor with a full calendar prices high on purpose. It's not an insult; it's a filter.
• Someone made a mistake. More common than people think, and a bid that's wildly low is a problem even if you win the argument later.

Before you sign anything

Two verifications, neither of which takes long:

Licensing. Suffolk County requires home improvement contractors to hold a county license, and the category is broad — it covers remodeling, carpentry, and painting of residential structures, among others. Ask for the license number and confirm it with the county's consumer affairs office rather than accepting a number on a business card.

Insurance. Request a certificate of insurance sent directly from the agent, not a copy from the contractor, and check that it's current. General liability and workers' compensation both matter — if an uninsured worker is injured at your house, the question of who is responsible gets expensive quickly.

None of this makes you an expert, and it isn't supposed to. It makes you a homeowner who is comparing the same job three times instead of three different jobs once — which is the only way the lowest number and the best value ever end up being the same bid.