A couple of weeks ago I spoke with a 23 year old, single young man who has been living with his parents for the past 18 months.  He was talking about saving up money for a down payment on a home.  He already has a pretty good idea about what mortgage payment he can afford.  He is buying a small house, with the hope of moving into a larger one in several years.
I threw him for a loop, though, when I asked him about property taxes and maintenance costs.  He had not thought about those costs.  He figured property taxes would be about $400, but when I told him to expect property taxes to be around $2,000 or more his jaw almost hit the floor.  He had no idea the taxes would be that high.  
There are always added costs to owning a home.  Here are a few I could think of:
Property Taxes - these always seem to be more than you thought, and they tend to increase pretty much every year, sometimes by several percent.  It often means having to put away $150 to $300 away each month to pay for them, a cost that can really add up.