In both cases their are shared maintenance expenses for the allotment. Like roads, drainage, and other things taxes would pay for but they cut themselves off from city by allowing an HOA.

Shitty that they even exist and anyone thinks it's a good idea to trust unqualified people to manage projects they have no experience in usually. All a scam to let the developers cut costs and pass it onto the residents.

Now most of these HOAs are managed by older residents and most of them have a "I'm gonna die, why should I care" attitude about future planning.