Lawns and Mower, Each person who has replied to you has tried to tell you that you are in danger of having a major disagreement with this client. Who determines when $10K of work has been performed if nothing is in writing? The client may think that you owe him another $5K of work after you think you that you have finished. Put it in proposal form, stating the work that you will perform, in which areas for the agreed upon budget. Get client's signature of agreement.