But is my house, I can do whatever I want with it. I don't care about my neighbor "ugly" house, "ugly" car, he should not care about my "ugly" lawn. I understand if they complain about externalities like loud noise or smell or having bee hives in my backyard, but visual externalities should not be their problem.
"Because the real estate agent and any potential tenants". What if I like to dress like a homeless and walk pass a real estate agent and potential tenants? They will think that the neighbor is not safe and they will not buy/rent the house. So what do we do now? Have a dress code for walking outside so my neighbor can make a sale? What is more important? My freedom to wear what I want or my neighbor profit margin? I say my freedom.