As others have been saying, in the post global financial crisis (GFC) world, NZ's interest rates are actually high compared to many other first world countries.
Put your money in a kiwibank 1 year term deposit at 3.6% interest rate and be grateful.
Regarding the property market, (other than the subprime crisis in the USA that started all the GFC mess), the causation is the other way around. Low interest rates are adding fuel to the fire that is our housing market.
Our economy has relatively low inflation. The reserve bank drops interest rates to discourage saving, and encourage investment (in economic terms this means the buying of capital goods by businesses), to encourage growth.
However these low interest rates make mortgages more palatable, and hence people are willing to bid more on housing. Many would be a world of pain if we went back to 2007 mortgage interest rates of 10%+.