A property mortgage loan is a loan that is taken out to purchase a property. The interest rate on a property mortgage loan can vary depending on the borrower's credit score, the size of the loan, and the type of loan. Generally, the lowest interest rate that can be obtained on a property mortgage loan is 0.5% - 1.5%. This rate is often reserved for borrowers with excellent credit scores and a large loan size. It is important to note that this rate is not guaranteed, and borrowers may have to pay additional fees and charges in order to qualify for the lowest interest rate. Additionally, borrowers should shop around to find the best loan terms and conditions for their particular situation.