If a condo, in addition to property taxes you also have the HOA dues. If a condo the HOA fee will take care of the maintenance of the exterior, but you also may have special assesments from time-to-time. You would also have to investigate what the HOA covers in terms of insurance and other costs.
Most of the annual costs depend on the value of the home. Property taxes in San Diego County will vary, but will be close to 1.15% of the purchase price excluding Mello Roos. Hazard and liability insurance will also be based on the value of the home. Call an insurance agent for an estimate.
Maintenance is greatly dependent on the condition of the home and utilities will be slightly higher for a house vs. a condo.
For better estimates feel free to give me a call.