What are the consequences of a contractor altering a contract after it had been signed? For example you sign a contract for roofing and siding repairs and the contract states that the contractor will accept the RCV insurance proceeds. Because the checks are issued to the homeowner and the bank that holds the mortgage, the bank holds the money requiring a contract that has a dollar amount. The contractor writes on the original contract a dollar amount and submits it to the bank. What are the legal ramifications of such action?