Overcharged by a contractor: what you can actually do

Step one: find out whether it is a dispute or a misunderstanding

Put the agreement and the bill side by side and compare line by line rather than total against total. Most of the time the two documents agree almost everywhere and diverge in a few places, and naming those places converts a vague sense of being ripped off into a specific question.

Look for three things: lines that were not in the original scope, quantities or hours that grew, and a rate that changed. Then check your own records for changes you approved along the way, because authorized extras are not overcharging.

Step two: ask, in writing, and stay narrow

Write to the contractor referencing the invoice number and date. Name each line you are questioning exactly as it appears, say what you understood was agreed, and ask for an explanation or a corrected invoice.

Say what you are paying and when. Paying the undisputed portion on time is the single most useful thing you can do: it keeps the argument about the one line you are questioning instead of adding a separate argument about non-payment.

Keep the tone flat. You are asking a question about a document, not accusing anyone, and a surprising share of these end with a corrected invoice and no further trouble.

Step three: the federal route, which works in every state

If you paid by credit card, you have a federal remedy that does not depend on where you live. Regulation Z sets a billing-error procedure, and its definition of a billing error explicitly covers goods or services that were not accepted or were not delivered as agreed. Work that was billed but not done fits that description squarely.

The deadline is the part people miss. Your dispute has to reach the card issuer within 60 days of the statement that first showed the charge, at the address the issuer gives for billing disputes rather than the one you send payments to. Once it does, the issuer has 30 days to acknowledge it and two complete billing cycles, and never more than 90 days, to resolve it.

There is a second and broader federal right alongside it: you can raise against the card issuer the same claims you would have against the contractor. That one comes with conditions. The credit has to exceed $50, the transaction generally has to have happened in your state or within 100 miles of your address, and you must have made a good faith attempt to sort it out with the contractor first, which is what steps one and two were.

If the contractor arranged financing secured by your home, a different federal rule applies: you have until midnight of the third business day to rescind, counted from whichever happened last out of signing, receiving the rescission notice, and receiving all material disclosures. If that notice never arrived, the window stretches far longer.

What is genuinely state law

Three things really do depend on where the work happened, and no federal rule replaces them. Whether the contractor must be licensed, and how to complain to the board that licenses them. What a home improvement contract has to contain, including deposit limits, which several states cap. And which court hears a dispute, with small claims limits that vary widely and are designed to be used without a lawyer.

Your state attorney general's consumer protection office is the right starting point for all three. But do not let that be the reason you wait: the federal card-dispute clock is running on the statement date regardless.

Knowing whether the number is actually wrong

All of the above assumes you know the bill is too high. Often the real problem is not knowing, which makes people either pay something unreasonable or fight something perfectly normal.

Negoti8 takes the quote or the invoice and assesses it line by line against market rates, then drafts the message about the lines that stand out. If it turns out the pricing is reasonable, that is worth knowing too, and it costs you a lot less than a dispute.