People often think when they move into a HOA that the HOA can tell them what to do. That the HOA is some horrible entity that dicatates what you do when you hit your front yard. You think "It's my land I can do whatever I want with it how DARE someone tell me different!".
That's a major misconcept about HOA's. It's NOT them telling you what you can or can not do with your own yard. It's controlling the fact that you and your neighbors aren't sufferers of that outrageous yard or outhouse decision. Ever live next door to a person who feels a Outhouse is a yard decoration in their front yard? Or someone that hates grass so they cover the yard with concrete and paint it green? (It's been done!

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Yes there are restrictions, but how are those restrictions so restrictive? Those restrictions that are enforced are because of the maintaining the resale values of your homes. At my house OUTSIDE the HOA, many homes won't sell because of what it looks like across the street or next door. We have a great home for sale, but the neighbor across the street has vehicles scattered all over the yard, dogs, and doesn't mow their grass but once a month. They are in the county and can't be forced to do anything to clean it up. If they were in a HOA, I and my neighbors could enforce rules forcing them to clean up or be liened for the cost of clean up.
Read up a bit more on HOA's before deciding. They are NOT that horrible in every case. Every neighborhood has it's issues. My neighbor is a drunk who calls the police on my(2)dogs when he hears his (3)dogs barking! My dogs are in the house under my bed sleeping. It's just the way things are.
Go to your local county records office and request the CC&R's of the HOA. They should be there. Don't depend on anyone else to inform you or give you that information. It's considerd the Homeowner's responsibility to be "informed". So you have made a good step in your purchase. Good luck!