as to what's a significant difference is, there is no hard definition. if your home has an old outdated interior the rent would be less than an identical house next door that has been modernized. you call in 3 realtors to appraise what your property should rent for and you're going to get 3 different values. Zillow is not a real estate company so between their estimate and a realtor, whose judgment do you think a court would give more weight to.
