I charge a $300 deposit that goes towards their first month's pay if its the month coming up or if it is for the first month that I have available....for example...if I know I will be having a space open up in July, and I meet with someone in April that wants it, I don't charge a holding fee if they are starting in July, but I do charge the deposit to "secure" their spot so that I know that yes, in fact these people are truly comitting. But anything after that is $300/mth, with a limit to how many months I can hold depending on what I feel works for me at that time.