Cost to Own
United States › California › Santa Clara County › Sunnyvale Population 153,455 Data vintage ACS 2023 5-Year Rates updated 2026-10-15
Before you budget for Sunnyvale FEMA rates natural hazard risk in Santa Clara County Very High, with earthquake its highest-ranked hazard against other US counties. It shapes what insurers charge here. See what threatens homes in this county

Total monthly cost of ownership

Cost to Own a Home in Sunnyvale, California

A $1,817,000 home here costs

$12,848

per month, all in, with 20% down at today's 7.40% 30-year fixed rate. By the 28% rule that takes a household income of about $550,500 a year.

P&I 78%Tax 6%Insurance 2%Utilities 2%Upkeep 12%

A standard mortgage calculator would have told you $10,064. The real number is $2,784 higher every month, 28% more than the payment most buyers budget for.

Compare Santa Clara County with anywhere in America · full county breakdown

Sunnyvale median: $1,816,600
Under 20% adds PMI
Freddie Mac PMMS
CA average household

Where every dollar goes

Only the first line is a mortgage payment. Change any assumption above and every figure below recalculates.

Principal & interest30-year fixed, $1,453,600 borrowed $10,064
Property tax0.496% effective rate for Sunnyvale itself $751
Homeowners insuranceCalifornia averages $1,403/yr (NAIC), or 0.186% of home value $282
Electricity33.61ยข/kWh, California residential average, EIA $169
Water, sewer & trashUS household average $68
Maintenance reserve1% of home value per year $1,514
Total monthly $12,848

Sunnyvale against Santa Clara County and California

MeasureSunnyvaleSanta Clara County
Median home value$1,816,600$1,382,800
Median property tax$9,006$9,766
Effective tax rate0.496%0.706%
Median gross rent$3,065$2,814
Population153,4551,903,297

The weather behind that power bill

Sunnyvale sits in Santa Clara County, which averages a high of 81.4°F in its hottest month and a low of 41.7°F in its coldest, with 13.48" of precipitation a year and 58% of it in a single three-month stretch. That climate drives 624 cooling and 2,184 heating degree days, which is what sets the $169 electricity line above.

See the full climate breakdown for Santa Clara County , month by month temperatures, rainy season timing, snowfall and heating and cooling costs.

Other cities in Santa Clara County

Full Santa Clara County cost breakdown · Every county in California

Talk to someone who works this market

These are Sunnyvale averages. What one specific house costs to own, or what it would sell for today, depends on the street and the condition of the place. We will connect you with one licensed local agent who works Sunnyvale every week. Free, no obligation, and we never sell your details to a list.

I'm looking to buy in Sunnyvale I already own here and may sell

Common questions

How much does it cost to own a home in Sunnyvale?

A $1,817,000 home in Sunnyvale, California costs approximately $12,848 per month with 20% down at 7.4%. That is $10,064 principal and interest, $751 property tax, $282 homeowners insurance, $237 utilities and $1,514 set aside for maintenance.

What is the property tax rate in Sunnyvale?

Sunnyvale has an effective property tax rate of 0.496%, based on a median home value of $1,816,600 and median real estate taxes of $9,006. That is lower than the Santa Clara County average of 0.706%.

What is the average home price in Sunnyvale?

The median owner-occupied home value in Sunnyvale, California is $1,816,600, against $1,382,800 across Santa Clara County.

Is it cheaper to rent or buy in Sunnyvale?

Median gross rent in Sunnyvale is $3,065 a month, against $12,848 to own the median home all in. Renting costs less month to month here, though renting builds no equity.

What salary do you need to buy a home in Sunnyvale?

Using the standard 28% rule, housing costs at no more than 28% of gross income, buying the median home in Sunnyvale, California at today's rate takes a household income of roughly $550,500 a year. That covers the full $12,848 monthly cost, not just the mortgage payment.

Sources & methodology

  • Median home value, real estate taxes, gross rent and population for Sunnyvale, US Census Bureau, American Community Survey ACS 2023 5-Year, place-level tables.
  • Homeowners insurance, NAIC average premium for California.
  • Electricity price, EIA Electric Power Monthly Table 5.6.A.
  • Mortgage rate, Freddie Mac PMMS, refreshed weekly.
  • Maintenance (1%/yr) and water and sewer ($68/mo) are national estimates. Every assumption above is editable.

Full methodology