question about illegal renting?

[mommy of 1 & 1 on the way]

I was renting a garage that had a stove in it and wanted to know if that's illegal ( to rent out in california)? I am asking because the landlord we had has given us a hard time ever since we told her we we're moving out and now she doesn't want to give us our deposit ($800.00) when we left everything clean (took pictures to prove) nothing was broken, even had the carpet cleaned. she's telling us she wants us to paint the inside of house but it wasn't even painted when we 1st moved in and there's no reason to paint it ( no holes in wall or anything). she's been doing stuff illegally so i want to report her to department of housing. But i want to know if a stove is illegal in a garage? thanks for your answers