Calling the market low is a difficult task, and it’s most often spotted in the rear-view mirror. For one thing, there’s no agreement on when the U.S. real-estate market will officially touch bottom. If you believe the National Association of Realtors, it will happen later this year. Investment bank Merrill Lynch is much more pessimistic, predicting that U.S. home prices will drop another 15% this year and 10% in 2009, with perhaps even more depreciation in 2010.

But for many buyers, there’s no real need to wait for the market as a whole to officially bottom out, says Delores Conway, director of the Casden Forecast at the University of Southern California’s Lusk Center for Real Estate. "Real estate is local," Conway says, and therefore what constitutes the bottom for the country is meaningless for those looking to buy and sell homes in their own neighborhoods.

Prices in many markets have not yet hit their lowest point, but they aren’t that far off. And in other areas, only the pace of sales has been affected; prices have held firm or gone up.

Waiting for the absolute bottom to hit before buying puts you at risk of missing it and getting caught up in a market on the upswing. Plus, for some first-time home buyers, owning simply makes better economic sense than renting.

Downturn, what downturn?

Of course, in some parts of the country, there’s no real reason to get cold feet about buying. Prices have ticked up slowly and are expected to continue that slow march for the foreseeable future. "We have not seen a downturn in our market," says Marianne Ackerman, of The Property Shop in Glenwood Springs, Colo.

5 REASONS TO BUY

1. Prices in the neighborhood you are interested in are relatively stable. Either they are holding their own or increasing, or the pace of decline is slowing significantly. If you have to move and don’t like apartments, the small penalty you pay for missing the bottom may not mean much. 

2. You plan to stay in the home for more than five years. If you can stick it out that long before selling, economists say you’ll probably ride out any downturn and come out ahead on price.

3. Your rent rivals a mortgage payment. If you can afford to buy, it can give you one bonus that renting can’t: the mortgage-interest deduction on your taxes.  

4. You’ve found the right house in the right area for you. The schools are great. You love the area and know it would be hard to find another house like the one you have your eye on. In a better market, you would most likely have much more competition for that home. 

5. You’ve built equity in your house and are moving to a place where homes are cheaper. In your new market, your money will go a lot further.