here is alittle more advice for you doing large jobs!Invoice Frequently

Your contract should allow for frequent progress payments.

Frequent invoicing does several things: First, it helps your cash flow. Secondly, it allows the customer to understand that work has been done. Therefore, the customer may not have the opportunity to later say, "I didn't know that you had done this." Payment by the owner would be a means of proving acceptance of the work paid for. Further, if there is going to be a dispute, you are better off having the breakdown occur early. If you are going to have problems collecting your money, it would be better that you are owed a little rather than a lot.

Good luck!
Beth
Remote Office Solutions