not to discourage you...
But make sure you are saving to buy a house because it makes sense to you and not because you believe that a family has to own a house. In many instances owning a house doesn't really put you ahead of where you would be if you were just renting.
There are some pretty big myths about home ownership that a lot of people simlpy accept on face value.
1. You get to take off all the interest you pay on your taxes... Unfortunately this isn't true. At best you would be able to claim a tax write off if you itemize your deduction and the total deduction (including the interest paid) are greater than your standard deductions. In some instances the standard deductions are still greater than the interst so you get nothing for the interest you pay.... The second issue is some people assume that if they paid $10,000 in interest in a year that they get to take $10,000 off their taxes... well sadly you only reduce the tax bill according to your tax bracket... if you were in a 25% tax bracket then that $10,000 in interest would reduce your tax bill by $2,500... Of course you can't lose sight to the fact that in this situation you are still paying $7,500 of your money to a bank....
2. Owning a home is a great investment. Well, if that were the case we wouldn't have any banks like IndyMac going under would we. I think the best test you can do is look at the cost of a new house in your city... how much is it a square foot.... now look at older houses and calculate their price per square foot. If the old house is selling for the same as the new one then that would be a good deal... but often times you see older house selling for a fraction of the cost of a new house... Houses aren't really investments as much as they are like cars. They start to lose value as they age... the land the house sits on is the only thing that is truly an investment.
And don't forget that owning a house has alot of expenses that you don't have as a renter.
Hope I didn't discourage you too much... I just wanted you to think long and hard about why you want to buy a house, sometimes I think people blindly assume that they HAVE to have a house to complete their lives.