Ask your parents, other relatives or friends for help. If they can't give or loan any money, perhaps they'll agree to co-sign the loan.

Sell (or borrow against) other real estate you own.

Sell securities you own, or borrow against them through a loan from the stock brokerage.

Sell collectibles or heirlooms you own.

Cash in on any insurance you have.

Get a second job. It'll help you raise cash, and the extra income will improve your chances of qualifying for a loan. You can quit later.

Look for an investment partner who'll put up some or all of the cash in an equity-sharing partnership. You make the monthly payments and the two of you split the eventual resale profits.

Pawn something you own and use the proceeds for a deposit. You can get the item back after you've moved in and can afford to pay the pawnbroker back.

Refinance your car or other vehicles.