Hi Ole Bjorn,
The property taxes vary from home to home. Depending on when the home was built and where it could be any where from 1.2% on the purchase price or 1.9 % on purchase price. In some areas the developers when building homes have add a Melo-Roos tax which gets added to your state taxes and bond measurements.
If you are thinking of buying a home in San Diego County I would recommend that when you start looking in certain neighborhoods ask your realtor if there is a Melo-roos tax and what they think the taxes would be in this area. When you actual get into contract on a home, the seller has to disclose the special tax assessment which will tell you clarily what your taxes will be on the individual home.
Hope this gives you a better idea.
Catherine Barden, Realtor in San Diego, La Jolla, Del Mar, Encinitas, Carlsbad