When looking for a home in San Jose, many people only consider the home price and mortgage interest.

However, one of the biggest surprises after purchasing a home is the property tax. In the U.S., property tax is part of the monthly housing maintenance costs, so if you don't calculate it accurately from the start, your budget can be significantly off.

Santa Clara County, where San Jose is located, is one of the areas in California with the highest home prices. Because home prices are high, the total amount of property tax naturally increases. Therefore, if you plan to buy a home, it is important to understand the property tax structure from the beginning.

The basic framework for California property tax began with Proposition 13, which was passed by voter referendum in 1978. Under this system, the basic property tax rate is set at 1% based on the purchase price of the home. Additionally, the annual increase in assessed value is generally limited to within 2%, so the longer you hold the property, the more stable the tax increase tends to be.

However, the actual tax paid does not stop at the basic 1%. Local bonds for school facility improvements, roads, and public facility construction, as well as various special taxes, are added. Therefore, in San Jose, the effective property tax rate that homeowners actually pay often ranges from about 1.15% to 1.35%. The exact rate can vary depending on the address and whether special taxes are applied in the area.

For example, let's assume you buy a house for $1 million. The basic property tax would be $10,000 annually. If special taxes are added and the effective tax rate is 1.25%, the annual property tax would be about $12,500. When calculated monthly, this means you would be paying about $1,040 in property tax. If you only calculate the mortgage principal and interest and overlook this amount, your actual monthly housing cost could be much higher than expected.

Differences can also arise depending on the school district. Even within San Jose, the bonds or special taxes for school facility improvements can vary depending on which school district you belong to. Therefore, even for homes at the same price, property taxes can differ slightly. It is advisable to check escrow documents or county tax records before finalizing a home purchase to review the actual property tax and special tax details.

One reason property taxes are high is education. California public schools operate primarily on property taxes and state funding. Therefore, in areas with good school districts, there tends to be more investment in school facilities and educational programs, which can, in turn, drive up home prices. Ultimately, school districts, home prices, and property taxes are interconnected.

A key feature of Proposition 13 is that the property tax for long-held homes can differ significantly from that of newly purchased homes. For example, let's assume there are two identical homes in the same neighborhood. One home was purchased 20 years ago for $300,000, while the other was purchased this year for $1.2 million; the amounts used to determine property tax are different. Therefore, even though the homes are the same size, it is common for the new homeowner to pay significantly more in property taxes.

This structure leads to the notion that in California, the longer you hold a home, the more favorable the tax burden becomes. Conversely, new buyers must consider the high property taxes from the outset.

When purchasing a home, you should not only calculate the mortgage principal and interest. You must also include property taxes, homeowners insurance, and maintenance costs to determine the actual housing cost. Especially in high-priced areas like San Jose, property taxes alone can exceed $1,000 a month, so it is essential to include this in your budget planning.

Ultimately, what is more important than buying a good home is buying a home that you can afford long-term. It is crucial to develop the habit of thoroughly checking property tax records and special tax details, rather than just looking at the price listed in the contract, as this is the most realistic way to reduce unexpected burdens later on.