Where can I find a lawyer for a contractor dispute?

Don't let the argument carry on through scattered calls and texts, because it gets harder to establish what each side actually said. Send one written request asking the contractor to explain every extra charge and state when the remaining work will be completed. The New York City Bar Legal Referral Service is a sensible place to ask for an attorney who handles contract and construction disputes. Give them a short outline of the problem and the amount involved, and they'll direct you to the right type of lawyer.