I had a similar situation with a LL. I had cleaned the apartment, replaced any bulbs, cleaned the fridge, stove and fireplace, etc, etc. However, I suspected something like this from him because I had seen how he had treated other renters and so I was prepared.
First, I photographed each room after cleaning (with a copy of the daily news lying in a conspicuous place). When the time came for the final inspection and turning over the keys, I invited two friends over. In their presence, I handed over the keys and asked how everything looked. He said "looks OK to me".
Two months later, after requesting my deposit in writing, I received a bill from him for $1,200. According to his statement, he had 2 men work two days cleaning the apartment; had replaced blinds, cleaned the filthy fridge, threw out spoiled food, had to replace burners on the stove, painted, etc. His bill was actually $1,700 but he deducted my $500 deposit.
So, to make a long story short, I filed on HIM in small claims court for my $500 deposit. On court day he produced not one shred of evidence. I had the photos, the actual newspaper I had used in the photos and my two friends to testify to what he had said at turnover.
The judge considered for about 30 seconds and awarded me $500 plus court costs.
It felt good to show this bully that not everyone will just roll over and take his abuse.
Starting Score: TU 737 EQ 721