Well that depends, Cameron.
If you purchased this home with little or no money down (which was possible 5 years ago) and the value isn't what it used to be (as is the case with much of America right now) your options may be limited to non-existent.
If, however, you have good credit, income and plenty of equity in the home, your options are wide open:
HELOCS still exist and can be used for renovation purposes.
FHA 203k's let you borrow more than the home is currently worth (if the upgrades brign it into line with current sales in the area - which is a might big "if")
And if you do have plenty of equity, you can always go the Cash-Out Refi route.
Basically, I'd need to know a lot more about you, your home, and your current financial situation before I could give you any meaningful advice.