Bottom in your area? Unknown, will depend on your market. Some markets are most likely already at the bottom, some might still have another 20% or so to fall.
We are renters watching the situation closely as well, but do not have the full 20% to put down in a downpayment, so will be waiting regardless.
Prices aside I would question if this is the best time for you personally?
How "secure" is your job? Do you have any debt? Do you have 6 months of emergency funds in cash to cover a job loss? Do you have a down payment? Are you willing to pay PMI insurance without a full 20% downpayment?
Any idea if you could even get a mortage? What's your credit score?
Aside from just the monthly mortage payment, are you factoring in the insurance, property taxes, possibly increased utilities and maintance issues with a house?
These things are more important to me that what the actual price of the house is. Personally, we are not prepared to own a house ourselves based on the above.
While I am debt free, my partner still has $5K in student loans to pay off and will need a car replacement soon too. I have 4 months of expenses in a savings account and am building that to 6 months and then will save the downpayment.
In our market, I have a feeling that prices will continue to drop some, how much and if that occurs I am not certain but regardless even with the $8K tax credit for buying a home in 2009, we are in no position to own a house.
Of course, you might have already addressed all of our above issues, or you might not have a big of a "security gland" as I do, so you might be comfortable with paying PMI insurance or having debt, etc.
As for prices falling... will totally depend on your market. Detroit is most likely at the bottom, but Chicago might not. Likewise, more rural locations never had the price increases that metro's seemed to expereince.
Good luck in figureing it all out, hopefully some others can chime in as well.