just went through this process for land in OK.
here are the loan options i received:
bank #1 (in OK)
5 year balloon, any amortization period (up to 30 year), 15% down minimum
3/3 arm, 4.5% first 3 years, any amortization period (up to 30 year), 15% down minimum
bank #2 (in TX)
5/1 arm, 4.125% any amortization period (up to 30 year), 15% down minimum
bank #3 (in OK, AR) - will not lend on land in TX
7 year fixed, 7.65%, 35% down minimum,
7 year fixed, >8%, 0% down
5/1 arm, 5.14%, 35% down minimum
5/1 arm, 5.69%, 0% down
I did not want to mess with a cash out refi or HELOC (4.675% for full financing) although I had plenty of room to do both and use cash for 100% of the land cost. I intend to have this land paid off in less than 5 years so option #2 was the best for me and didn't put any other liens on my primary residence.
good luck in your search, but there are plenty of banks out there that will finance raw land.