For example, do landlords in that neighborhood charge for coin operated laundry, or do they hold pet deposits?

Where I live it used to be 30 days - and I didn't think that was enough time for folks living month to month to pull funds together to save up, look for a place, get a deposit and 1st mo's together etc... so I always gave at least 60. 

Had them sign leases and got security deposits.

Earnest money deposits are often required to secure a purchase agreement, signaling a buyer's serious intent to sellers.

Utilities start-up feesSevier County Electric will charge you a deposit.

Here in California, that essentially means that the buyers earnest money deposit wouldn’t be at risk regardless of what they did.

I've seen cases where the LP backed out of the deal at the last minute, not only leaving the operator at the closing table without the capital, but causing the sponsor to lose their earnest money deposit. 

She is telling me I have to put a honest deposit of $1000 down for every offer I make.

Right on the bank statement you could see the following:- Federal & state tax refund deposits of $12k- Purchase at a care tire shop, assuming new tires for her car.

You can charge pet rent, a pet deposit, or both.