Navigating the homebuying process in California often brings questions about property taxes and for good reason. Property taxes can significantly impact your monthly expenses and long-term financial planning. Understanding how property tax reassessments work is essential for homeowners and buyers alike. Whether you’re purchasing your first home, transferring a property, or planning for the future, this guide will help you make informed decisions.
Overview of California Property Tax Rules
California’s property tax system is unique compared to other states. Under Proposition 13, property taxes are calculated based on the purchase price of your home. This value is officially known as the assessed value. Property taxes are capped at 1% of the assessed value, plus any additional local taxes or voter-approved assessments. Beyond the initial purchase, annual increases in property taxes are limited to 2%. This structure aims to provide stability for homeowners by preventing sudden spikes in tax bills.
However, property tax reassessments can occur under specific circumstances. When a property changes ownership or construction adds significant value, local tax assessors reassess the home’s value. For buyers, this means your tax bill will likely differ from the seller’s and reflect the new market value.
How Proposition 13 Impacts Long-Term Homeowners
Proposition 13 has played a pivotal role in keeping property taxes predictable for long-term homeowners. By limiting the annual increase in assessed value, this legislation ensures that homeowners aren’t penalized by rapid increases in market prices. Essentially, the longer you own a home, the more you benefit from a potentially lower effective tax rate compared to current market values.
For buyers, it’s important to recognize that purchasing a property triggers a reassessment. If a home has been owned for decades, the reassessed value can be significantly higher than the previous owner’s tax base.
What Proposition 19 Changed for Buyers and Families
Proposition 19, passed in 2020, introduced important changes to property tax rules, particularly affecting families and older homeowners. It allows eligible homeowners — such as those aged 55 or older, people with severe disabilities, and victims of natural disasters — to transfer their existing property tax base to a new home. This creates valuable flexibility while preserving lower tax rates for those who qualify.
However, Proposition 19 also tightened inheritance rules. Previously, parents could transfer a property to their children without triggering a reassessment. Now, reassessments for inherited properties occur unless the heir intends to live in the home as their primary residence. These changes can have a major impact on family planning and estate management.
How Reassessments Affect Monthly Mortgage Payments
When a property is reassessed, your escrow account may need to adjust to cover the updated tax amount. For homeowners, this means your monthly mortgage payment could increase. Lenders typically include property taxes in your monthly mortgage payment to ensure they are paid on time. Any changes in your tax bill will be reflected in your mortgage’s escrow analysis.
Buyers should also be aware of supplementary tax bills. These are issued when the current tax due on the property is lower than the reassessment value, allowing local governments to recoup the difference. It’s crucial to plan for these additional bills, especially within the first year after purchasing your home.
Steps Buyers Should Take Before Purchasing a Home
Managing property taxes begins during the homebuying process. Here are some proactive steps you can take:
- Research the home’s current tax rate: Understand how it compares to other similar properties in the area.
- Evaluate the estimated reassessment value: Work with a trusted real estate agent or mortgage professional to estimate what the new assessed value and corresponding tax obligations might be.
- Budget for supplementary taxes: Set aside funds for any unexpected property tax bills in the first year of ownership.
- Ask about exemptions: Explore potential exemptions or benefits, such as those available under Proposition 19, that could help manage your tax liabilities.
Being aware of potential property tax changes ensures there are no surprises once you’ve moved into your new home.
Make Homeownership Happen with Allied Residential Mortgage
Buying a home is a big step — but it doesn’t have to be complicated. At Allied Residential Mortgage, we’re here to guide you through every stage of the mortgage process with clear answers, trusted advice, and personalized solutions that fit your goals.
📞 Ready to get started? Call us today or visit alliedresidentialmortgage.com to explore your home loan options with confidence.



