Owning a home has long been the American Dream, but these days, far too many people are pushing themselves too hard to attain it. It's estimated that 39 million Americans can't actually afford their homes, while more than half the population has been forced to make major financial sacrifices to keep up with housing payments.

No matter what sort of property you're sitting on, there comes a point when you need to take a step back and decide if the cost of ownership is worth it. If you're thinking of downsizing to a less expensive home, here are a few signs that it's the right move for you.

Pile of moving boxes.

Image source: Getty Images.

1. Your mortgage, insurance, and property taxes exceed 30% of your take-home pay

Taking on too much house is one of the easiest ways to set yourself up for disaster. When you overspend on housing, you make it harder on yourself to save money, and you give yourself limited wiggle room when unplanned expenses arise.

So what's considered too much house? Generally speaking, your mortgage, insurance, and property taxes combined shouldn't exceed 30% of your take-home pay. If you find that they do, then it's time to consider downsizing and freeing up some much-needed room in your budget.

Keep in mind that it could be the case that your housing costs weren't always excessive, but have now reached that point because your circumstances changed. For example, if your family lost one income when you or your spouse decided to stay home and raise kids, then that could be enough to drive your housing costs above that 30% threshold. Still, it pays to be realistic about your situation. If that income drop is temporary and you have savings, then you might manage to hold off. Otherwise, consider getting out before you find yourself headed for financial ruin.

2. Your maintenance and repair costs keep climbing

The average U.S. homeowner spends anywhere from 1% to 4% of his or her property's value on annual upkeep. But if you find that your costs are exceeding the upper end of that range, it may be time to move to a smaller home that's less costly to keep standing. Review your bank and credit card statements for the past two years, see how much your home costs you to maintain, and decide if that figure is reasonable. If it isn't, then you'll want to consider a move.

3. Your housing costs leave no room for savings

Maybe your housing costs don't exceed 30% of your take-home pay, and your maintenance costs are minimal. But be that as it may, if you find that you're not saving money month after month, and housing constitutes your greatest monthly expense (which is the case for most people), then you may need to work on trimming that figure.

If you move to a smaller home in the same area, and that home is in similar condition to your current one, then there's a good chance your costs will go down by virtue of having less space to maintain. Think about it: It's cheaper to heat and cool a 1,500-square-foot house than one twice that size. And if your home is large enough to require two separate air conditioning systems, that's two individual units to maintain -- whereas a smaller home might have just one.

4. You're tired of not having options

Another reason to consider downsizing is if you come to realize that your housing costs are preventing you from enjoying too many of life's luxuries. Maybe you're swinging your mortgage payment just fine, and are managing to save responsibly all the while. That's all fine and good, but if you find that you're mostly unable to dine out, take vacations, or treat yourself to the occasional electronics upgrade because your home monopolizes too much of your income, then it's time to consider a smaller -- and cheaper -- place to live.

5. You're no longer using all that space

One final argument in favor of downsizing boils down to whether or not you really need all the space you have. If you're older, and your adult children have moved out, then it may not pay to spend all that money on maintenance and the like when you don't actually need the room. Though letting go of a beloved home can be difficult, you can focus on building memories in your new home -- and one that's more affordable.

Housing can be a huge expense, so be honest with yourself about whether the cost of your home is really worth it. You may come to realize that downsizing offers you the best of both worlds -- a comfortable place to live, and a lot more money in your pocket.