If the community that you live in is part of a Home Owner's Association, then you will most likely be paying monthly fees that typically help cover the cost of maintaining the community you live in. Typically these monies go toward park, greens, pool, club house, fitness center, landscaping, garbage and other such items. Depending on the community the fees may vary from 20 to 300 dollars or more a month. Sometimes these fees are billed monthly other times they are billed quarterly. Fees are set by a Board of Directors and mostly set annually. The Directors are elected by the homeowners.
The HOA is not an elective like the NA (Neighborhood Association) which is a voluntary group of home owners working towards the good of the community and which sponsors fun events and does not enforce HOA rules, regulations and covenants. Annual membership to join the Neighborhood Association is very minimal in my area, still a bargain at $15 a year.
I hope this helps.