Answer: It depends on your loan type. Usually 3% to 5% down.
The most common answer is 3% to 5% of the purchase price. FHA loans just dropped their requirement from 3.5% to 3.0%. There are also some conventional loans that only require 3% down. Veterans are usually eligible for a VA loan, which requires no money down. Properties in rural areas are usually eligible for a USDA loan, which also requires no money down.