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How Many San Diego Households Are Cost-Burdened? The County's Own Data Tells a Sobering Story

By Hedda ParashosSeptember 13, 2026

San Diego County's own housing data shows a majority of renters and a substantial share of homeowners spend 30% or more of their income on housing costs. Hedda Parashos breaks down the numbers by tenure type and explains what cost burden actually means for buyers, owners, and investors tracking affordability pressure across the region.

More than half of San Diego County renters spend 30% or more of their household income on housing. Among homeowners, roughly one in three faces the same squeeze. Those figures come from the County's own analysis of American Community Survey data, and they answer a question a lot of people ask: how bad is the affordability problem here, really?

How Many San Diego Households Are Cost-Burdened? Breaking Down the County's Own Data

The County of San Diego uses American Community Survey data to measure cost burden across all households. A household is considered cost-burdened when it spends 30% or more of gross monthly income on housing. Spending 50% or more puts a household in the "extremely cost-burdened" category.

For renters, housing cost includes contract rent plus utilities. For homeowners, the calculation adds up mortgage payments, property taxes, property insurance, condo or mobile home fees, and utilities. The County calculated cost burden separately for each tenure type, then combined them. Households with zero or negative income were counted as extremely cost-burdened. About 100,902 people were excluded from the calculation because income data was missing.

The result is a picture most La Jolla residents already feel in their bones. Renters face the steepest burden. A large share spend more than half their income on housing alone, leaving almost nothing for savings, healthcare, or unexpected expenses. Homeowners who purchased years ago may be sitting on equity, but those who bought in the last three years are often stretching to cover principal, taxes, insurance, and utilities on homes that cost significantly more than they did in 2019. Find out what your home is worth →

Where the Pressure Is Heaviest

Cost burden is not evenly distributed across the county. Communities where median incomes are lower relative to rents tend to show higher concentrations of burdened households. Chula Vista, El Cajon, and Spring Valley carry some of the county's highest shares of cost-burdened renters. Even higher-income coastal communities see cost burden concentrated among lower-wage workers who live there or nearby.

For investors, this matters. High cost burden signals compressed discretionary spending and tenant instability, which affects vacancy risk. For buyers, it is a useful lens on which submarkets face the most affordability pressure and how that pressure might affect price movement over time. Homeowners with significant equity are in a different position from those who bought recently at peak prices. Find out what your home is worth →

What This Means For You

• If you rent in San Diego County, there is a better-than-even statistical chance you are already cost-burdened. Understanding that baseline helps you plan realistically before adding car payments, student debt, or childcare to your monthly obligations.

• If you own and purchased before 2020, your fixed mortgage payment has become a relative advantage as rents and prices have risen around you.

• If you are buying now, run the full cost calculation, including property taxes, insurance, and utilities, not just the mortgage payment, before deciding what you can afford.

• If you invest in rental property in San Diego, tenant cost burden affects how much rent you can realistically collect and how long tenants stay. High-burden markets carry higher turnover risk.

The county's data removes the guesswork. San Diego has a cost burden problem that touches the majority of renters and a significant share of owners. Planning around that reality, rather than assuming it doesn't apply to your situation, puts you in a stronger position.

For more context on local market conditions, browse recent posts on the Palisade Realty blog.

Frequently Asked Questions

What does "cost-burdened" mean for San Diego households?

A household is cost-burdened when it spends 30% or more of its gross monthly income on housing costs. In San Diego County, that calculation includes rent plus utilities for renters, and mortgage, taxes, insurance, fees, and utilities for homeowners. Households spending 50% or more are classified as extremely cost-burdened.

Are San Diego renters or homeowners more likely to be cost-burdened?

Renters carry the heavier burden. County data consistently shows more than half of renter households spending 30% or more of income on housing, compared to roughly one in three homeowner households. Renters also make up a disproportionate share of the extremely cost-burdened group, those spending 50% or more.

Which San Diego communities have the most cost-burdened households?

Communities where median household incomes are lower relative to local rents tend to have the highest shares of cost-burdened households. Inland and South County areas including El Cajon, Spring Valley, and Chula Vista show elevated cost burden rates among renters. Coastal communities also have cost-burdened residents, particularly among lower-wage workers who haven't seen incomes keep pace with housing costs.

Source: data.sandiegocounty.gov