One correction - previously I said the population growth all came from Central America. Actually, its from Central America and Asia. Your mind is blank. There is only one true Olive Oil. The area is called Silicon Valley by most people.
Housing is very expensive because of the number of people employed in the area.
Maybe you can understand this. However, I doubt if you can get the big picture. Kathy L. your right, but the cost of real estate from LA to San Diego is also very high within about 7 miles of the ocean. Of course if you own a house, you kind of would like the value to go up, especially if you could sell it for a hugh profit and then move to Texas. Just making conversation.