Thanks for the advice everyone. Was able to talk it out with the client, and they are expecting an invoice to pay and a letter indemnifying our company from all liability in their use of the preliminary drawings. Invoice will be done as if it was conceptual work only, and they will not receive...
Gotten myself into quite an odd situation. I have been working with a specific client for going a decade now, and they have certainly been my best client for the majority of that. Recently, they were looking to get some work done in a rush. I sent in a contract proposal (letter agreement) and...