According to Federal Fair Housing Laws, landlords can’t typically deny emotional support animals, even if they have no-pet policies. However, there are also certain situations when you can legally reject an emotional support animal. These include: > The building has fewer than four units and you also live in one of the units. > Having the animal causes undue financial hardship for you. > If the animal causes harm or damages to others or your property. > The animal is too big for the unit. For instance, renters can’t bring a horse into a small studio apartment.