As an Aussi development manager I’m not superstitious, but here are some little known facts that might interest readers: 1. 4 storey apartment buildings are always unviable supporting the superstition, because the rate per square metre to build apartments is considerably higher than townhouses, 2. Usually when you add the 13th floor you find out too late that this then requires an additional lift, which means every floor has to have 1 apartment deleted- yep that’s BAD LUCK. 3. Development managers don’t work on Saturdays. 4. If a number ends in “1” it is always odd. You can’t have an even number ending in 1.