○ By law there should be a 30-feet wide fire break. But many people ignored it. That's why so many houses were destroyed in California.
-sailor(Ocean & Mountain);
○ So all of the whole neighborhood respect the law and by law is very important. Some people who took advantages of violating laws may bring huge loss or disasters to the whole community eventually.
○ Any new by-laws will not apply to current existing conditions, called "legal non conforming use" or "grandfather status"。It is very common in neighbourhoods with long history.