Analysis: Alameda County has lowest home affordability in state


Alameda County posted the lowest home affordability index in California, according to an analysis of 432 counties nationwide by ATTOM Data Solutions in the second quarter.

The county’s affordability index was 81 in the analysis, which found that home prices around the country have hit their lowest level of affordability in a decade.

The report determines the affordability number based on the household income needed to purchase a median-priced home in the county compared to historical data. An index under 100 indicates declining affordability.

In Alameda County, a median home costs $835,000. 

“Slowing home price appreciation in the second quarter was not enough to counteract an 11 percent increase in (national) mortgage rates compared to a year ago, resulting in the worst home affordability we’ve seen in nearly 10 years,” said Daren Blomquist, senior vice president at ATTOM Data Solutions. 

California counties with lowest home affordability indexes

CountyQ2 2018 Median Sales PriceAnnual Income Needed to Buy (3% Down and 28% Front-End DTI)Annualized Weekly WagesPct of Annualized Wages to BuyHistoric  Pct of Wages to BuyQ2 2018 Affordability Index
Alameda$835,000$221,216$73,90583.8%67.7%81
Marin$1,197,250$325,028$68,302133.2%108.4%81
Santa Clara$1,230,000$324,033$126,59471.7%59.0%82
Contra Costa$630,000$169,370$67,28870.5%58.3%83
San Mateo$1,400,000$369,411$116,24689.0%74.3%84
Monterey$619,000$168,320$46,982100.3%83.9%84
El Dorado$500,000$135,241$48,33478.3%68.2%87
Santa Cruz$785,000$214,576$49,465121.5%106.2%87
San Francisco$1,400,000$378,527$109,08397.2%85.8%88
Sonoma$611,000$162,383$52,19587.1%77.4%89
Sacramento$350,000$94,015$59,13744.5%40.2%90
San Diego$562,500$150,746$59,86570.5%64.2%91
Los Angeles$598,000$160,882$62,86871.7%66.2%92
Riverside$367,250$104,770$44,20066.4%61.4%93
Placer$476,500$128,682$54,83465.7%61.6%94
San Bernardino$310,000$83,727$45,66951.3%48.3%94
San Joaquin$343,000$91,594$45,56556.3%53.3%95
Santa Barbara$573,750$154,890$52,66382.4%78.7%96
Solano$415,000$110,481$56,68054.6%52.5%96
Yolo$450,000$120,955$58,38358.0%56.1%97
Ventura$590,000$158,383$54,47081.4%79.5%98
Napa$630,000$167,112$54,05486.6%84.8%98
San Luis Obispo$575,750$154,593$45,77394.6%92.9%98
Orange$700,000$192,204$61,45187.6%87.6%100
Kern$210,000$59,886$45,00637.3%37.5%101
Tulare$213,000$58,916$39,26042.0%42.4%101
Stanislaus$300,000$80,959$45,98149.3%49.8%101
Butte$268,500$74,020$41,09350.4%52.7%105
Shasta$242,000$66,743$42,57543.9%46.0%105
Kings$212,000$56,681$41,71738.0%40.5%106
Imperial$212,500$57,446$38,46741.8%44.6%107
Madera$239,000$65,179$42,21143.2%46.6%108
Humboldt$285,000$76,698$39,89753.8%59.2%110
Fresno$250,000$69,433$42,91345.3%49.8%110
Source: ATTOM Data Solutions

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