San Diego Property Taxes and Mello-Roos: What Homebuyers Should Know

When you buy a home in San Diego County, the mortgage payment is only part of the picture. Property taxes, special assessments like Mello-Roos, HOA dues and insurance all add to the true monthly cost of owning. Understanding them before you write an offer helps you compare homes fairly and avoid surprises after closing.

How are property taxes calculated in San Diego?

California property taxes are shaped by Proposition 13. The general tax is 1% of a property's assessed value, and local voter-approved bonds and assessments are added on top. Because those add-ons vary by location, the total rate differs from one tax rate area to another.

When you buy, the home is generally reassessed at the purchase price. After that, the assessed value can increase by no more than 2% per year, as long as there is no new change in ownership or new construction. Your exact bill depends on the specific property, so it is worth reviewing the current tax bill for any home you are considering.

What is a supplemental property tax bill?

Many buyers are surprised by a supplemental tax bill a few months after closing. When a property is reassessed after a sale, the county issues a supplemental bill to cover the difference between the old assessed value and the new one for the rest of the tax year. It is usually billed directly to the owner rather than paid through an impound account, so plan for it in your budget.

What is Mello-Roos?

Mello-Roos refers to special taxes authorized under California's Mello-Roos Community Facilities Act of 1982. When a Community Facilities District, or CFD, is formed, the special tax helps pay for public facilities and services such as roads, schools, parks and utilities, often in newer master-planned communities.

Key things to know:

• Mello-Roos special taxes appear on the property tax bill
• Amounts vary widely by district and by property
• Some districts run until the bonds are repaid, while others include ongoing service taxes
• Sellers are required to disclose Mello-Roos, and buyers should review the details carefully

The San Diego County Assessor's office has an overview of Mello-Roos and special assessments, and the County Treasurer-Tax Collector's website lets you look up bills for a specific parcel.

How do you find out if a home has Mello-Roos?

• Review the current property tax bill for special tax line items
• Read the seller's disclosures and the natural hazard and tax disclosure report
• Look up the parcel on the County Treasurer-Tax Collector's website
• Ask for the CFD details, including how the tax is calculated and how long it lasts

Mello-Roos is not good or bad on its own. Newer communities often have it because they built new infrastructure. The key is understanding the cost so you can compare homes on an equal footing.

What other hidden costs should San Diego buyers plan for?

• HOA dues: common in condos, townhomes and planned communities. Review the budget, reserves and any special assessments.
• Homeowners insurance: premiums depend on the property, location and risk factors such as wildfire exposure. Get quotes early in escrow.
• Flood insurance: may be required or advisable in some coastal or low-lying areas.
• Utilities: water, sewer, electricity and trash can vary by city and home size.
• Maintenance: older homes and coastal homes can need more upkeep over time.

How can you compare the true cost of two homes?

A home with a lower price but higher special taxes and HOA dues can end up costing more each month than a slightly higher priced home without them. When Robert works with buyers, he helps them line up the full monthly cost of each option, including taxes, assessments and HOA dues, so the decision is based on the whole picture.

If you are just starting out, our property search is a good place to browse, and you can see what has recently closed on our recent sales page.

Frequently asked questions about San Diego property taxes

What is the property tax rate in San Diego?

Under Proposition 13 the general tax is 1% of assessed value, plus local voter-approved bonds and assessments. The total varies by location, so check the tax bill for the specific property.

Will my property taxes go up every year?

The assessed value can generally rise by no more than 2% per year under Proposition 13, but voter-approved bonds and special taxes can also change your total bill.

Do all new homes have Mello-Roos?

No. Many newer communities do, but not all. Review the tax bill and disclosures for each property.

Does Mello-Roos ever go away?

Some Mello-Roos taxes end when the district's bonds are repaid, while others continue for ongoing services. The terms depend on the specific district.

Why did I get a second property tax bill after buying?

That is likely a supplemental tax bill, which covers the increase in assessed value after your purchase for the remainder of the tax year.

Have questions about a specific home?

Property taxes and special assessments are easier to understand with someone walking you through them. Reach out to Robert Santangelo to compare the true cost of the homes on your list. If you already own, you can also request a home valuation.