You should find out the price range that you are qualified for: The amount a lender says you can borrow.
There are many nice homes for sale in Altadena, all sizes, styles etc.. You need to narrow your wants and needs down so you can focus on homes that interest you and are in your price range.
I am a long time area resident and I am qualified to answer your questions regarding Altadena!
Look forward to hearing from you,
Pasadena, Ca. 91101