You should start your own thread to get more eyes on this, but yes, owned income property can result in high EFCs. Run some Net price calculators at schools on your kid’s college list to get cost estimates at the school level.
Some schools will consider appeals if there are extenuating or unique circumstances…you would start that process by filing a ‘special circumstances’ form (or something like that), which some schools have on their websites. Basically you are asking the financial aid staff to apply ‘professional judgment’ to your financial situation.
I’m sure @kelsmom can add more insight.