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Here is the FL Statute on Forgery: This is the statute that would apply. If it can be proven that it was done with the intent to injure or defraud the home owner then it is a felony in the 3rd degree. Punishable for up to 5 years on prison. It does not sound like it was done with an intent to injure or defraud, though.
831.01 Forgery.--Whoever falsely makes, alters, forges or counterfeits a public record, or a certificate, return or attestation of any clerk or register of a court, public register, notary public, town clerk or any public officer, in relation to a matter wherein such certificate, return or attestation may be received as a legal proof; or a charter, deed, will, testament, bond, or writing obligatory, letter of attorney, policy of insurance, bill of lading, bill of exchange or promissory note, or an order, acquittance, or discharge for money or other property, or an acceptance of a bill of exchange or promissory note for the payment of money, or any receipt for money, goods or other property, or any passage ticket, pass or other evidence of transportation issued by a common carrier, with intent to injure or defraud any person, shall be guilty of a felony of the third degree, punishable as provided in s. 775.082, s. 775.083, or s. 775.084.
775.082 (d) For a felony of the third degree, by a term of imprisonment not exceeding 5 years.