Countywide zoning is unwanted government control
Ask yourself these questions. Do you support zoning laws? Do you support land development plans and restrictions? Do you support restrictions on where businesses can locate? Do you support restrictions on building designs? Do you support government management of community growth?
If you answered yes to any of these questions, you are licensing the government to infringe on someone else's property rights. And what happens if a bigger mob doesn't like what you are doing with your land? Once the precedent for government control has been set the monster is loose. There is no turning back.
What is zoning? Zoning is government control of privately owned land...
This isn't to say that people should be able to do whatever they wish with their homes and property - only that they should be left alone as long as their actions do not violate anyone else's rights. If someone is concerned that his neighbor's excessively tall grass is becoming a haven for disease-infested rodents, for example, then the job of local government is to provide a forum (a courtroom) where such concerns can be addressed. But the onus is on the complainant to prove not only the existence of a menace, but also that the menace is directly affecting the use and enjoyment of his property. Of course, such a standard would relegate all but the most extreme cases to the dustbin. That is precisely why little government busybodies wouldn't stand for it.
Read on here. What's the libertarian alternative? The alternative is a 'voluntary city,' in which environmental conflicts are treated as an invasion of property rights, and imposed zoning is replaced by voluntary covenenants, market processes, and the protections of common law. Professor Bernard Siegan explains the libertarian alternative here. Cato Institute propose the halfway house of a Developers' Bill of Rights here.