Hi Bro Gooddebt,
Of course, if cannot rent out the property for prolonged period, then that is just poor foresight by the property investor. To illustrate the point on the interest front-load, let's assume one has bought a new double storey house for RM 700K using 80% loan over 30 years. The loan will be RM560K, with monthly interest of around RM 2,100 in the initial few years.
If one attempts to lower the monthly interest payable by putting in another RM200k, the loan is reduced to RM360K, but monthly interest still remains high at around RM 1,700. The investor is better off by using Rm140k (20% deposit) to buy another new house, with the RM60K as safety buffer.
When the property price rises in the next 5-10 years, due to the power of leverage, the investor reaps a higher return on his cash of RM340K (Rm200K + Rm140k), when he sells off both houses, compared to dumping in a higher down-payment & selling 1 house.
Of course, this is based on the assumption that the property is tenanted most of the time, with the mthly rent sufficient to cover the mthly interest. If not, perhaps the property is not worth investing in the 1st place.
http://www.amortization-calc.com/