Did you mean HOA? If so, yearly dues are those paid once per year (sometimes broken up into 2 payments depending on the Association, to make payment easier) as apposed to monthly dues that can be found in many communities. Home Owners Association dues can range in price depending on the services they provide. Each HOA is different, some provide for security (ie patrol and gates) while others may have community amenities (ie pools, club house, tennis courts) that all require maintenance and that is part of what the dues can cover. Since every HOA is different it is always a good idea to talk with neighbors or you can review the rules and regulations of the HOA during your escrow and if there are things you do not like you will have a set amount of time in which you can back out of the sale if you do not like the terms without loosing your deposit.
Let me know if you have any other questions, since their can be many pro's and con's to living in a HOA.
Century 21 All Professional