Santa Clara County  »  300 Potrero Ave

300 Potrero Avenue, Sunnyvale, CA 94085 - Property report

Also known as: 870 Hermosa Dr

Property image for 300 Potrero Avenue, Sunnyvale, CA 94085
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Property type

Research & Development Branches of Manufacturing Firms (Includes Shell Buildings) (14)

Year built

1976

Acreage

3.63

General Information

Address
Primary address
300 Potrero Ave
Sunnyvale, CA 94085
Alternate address(es)
306 Potrero Ave
310 Potrero Ave
330 Potrero Ave
Show all
Zip code
94085
County
Santa Clara
Municipality
Sunnyvale
Parcel ID
165-29-001

Owner

Find out who owns 300 Potrero Avenue, Sunnyvale, CA 94085. Uncover corporate and individual owners with a free account.

Tax
Tax year
2025-2026
Property tax
$99,727
Building
Property type
Research & Development Branches of Manufacturing Firms (Includes Shell Buildings)
Building sq. ft.
50,017
Stories
1
Year built
1976
Lot
Acreage
3.63
Lot sq. ft.
158,122
Zoning & use
Zoning
Qualified opportunity zone
Units
2

Area overview

Walk score
33 /100.  Car-Dependent
Transit score
42 /100.  Some Transit
Bike score
80 /100.  Very Bikeable
School district
09002
Ownership

Ownership information for 300 Potrero Avenue, Sunnyvale, CA

Property owner name
Registered owner
Source
Deed
Owner contact information
Phone number
Owner address
Documents

Sales history for 300 Potrero Avenue, Sunnyvale, CA 94085

No recently recorded sales for this property.

More about Santa Clara County property records.

Title documents

Date Type Amount Party 1 Party 2
10/11/1996 Deed XXXXX XXXX XXXXXXXXX XX XXXXXX XX

*Most recent recorded document on file for this property.

R: Recorded date
D: Document date

Tax

Property taxes for 300 Potrero Avenue, Sunnyvale, CA

Property tax data includes tax amount, market value and assessed value, exemptions, abatements and assessment history.

Current property tax
Tax year
2025-2026
Property tax
$99,727
Recent tax assessments
Market value
$8,501,874
Land value
$4,381,234
Building value
$4,120,640

More about Santa Clara County property taxes

Assessment history

See the assessment and property tax history, including the evolution of the total tax rate and corresponding property tax amount.

Tax year Assessed value Tax rate Property tax Y-o-Y change
2025-2026 $8,501,874 1.173 $99,727 +3.78%
2024-2025 $8,335,172 1.1529 $96,096 +0.92%
2023-2024 $8,171,738 1.1652 $95,217 +1.66%
2022-2023 $8,011,509 1.1691 $93,663 +1.13%
2021-2022 $7,854,422 1.1792 $92,619 +1.10%
2020-2021 $7,773,885 1.1785 $91,615 +2.34%
2019-2020 $7,621,457 1.1746 $89,522 +2.05%
2018-2019 $7,472,018 1.174 $87,721 +1.31%
2017-2018 $7,325,509 1.182 $86,585 +3.98%
2016-2017 $7,181,872 1.1595 $83,274 -0.61%
Permits

Permit information for 300 Potrero Avenue, Sunnyvale, CA

Issued date Permit number Permit type Sub type Valuation Finaled date Status
05/01/2026
06/16/2025
06/11/2025
06/04/2025
05/23/2025

*Most recent permits on record for this property.

Neighborhood

Demographics by ZIP code

Total population
24,024
Median age
33
Average household income
$259,833
Family households
55.3%
People per household (average)
2.47
Occupied housing units
9,631
Owner-occupied units
38.0%
Median year structure built
1988
Median value mortgaged units
$1,590,900
Median value unmortgaged units
$1,164,500

Risk

Create a free account to unlock expanded risk information, such as crime incidents in the area, tsunami and landslides risks, or its location relative to FEMA flood zones and the Coastal Barriers Resources System Area (COBRA).

FEMA flood zones

FEMA flood zones
X
Landslides and liquefaction map

Fire hazard zones

Faults and tsunami inundation zones map

Transportation

Daily traffic map
View daily traffic map

Access the detailed traffic volume map for 300 Potrero Avenue, Sunnyvale, CA 94085 to see estimated average daily traffic on streets surrounding the property as well as the types of properties in its vicinity.

Neighbors for 300 Potrero Avenue, Sunnyvale, CA

324 N Mary Ave, Sunnyvale 884 Hermosa CT, Sunnyvale 425 N Mathilda Ave, Sunnyvale 477 N Mathilda Ave, Sunnyvale 331 Soquel Way, Sunnyvale 410 N Mary Ave, Sunnyvale 456 W Maude Ave, Sunnyvale 820 W Maude Ave, Sunnyvale 880 W Maude Ave, Sunnyvale 919 Hermosa CT, Sunnyvale 870 W Maude Ave, Sunnyvale 340 N Pastoria Ave, Sunnyvale 305 Soquel Way, Sunnyvale 474 Potrero Ave, Sunnyvale 485 N Mathilda Ave, Sunnyvale 674 W Maude Ave, Sunnyvale 499 N Mathilda Ave, Sunnyvale 438 W Maude Ave, Sunnyvale 485 Potrero Ave, Sunnyvale 913 Hermosa CT, Sunnyvale

Nearby ZIP codes for 300 Potrero Avenue, Sunnyvale, CA

94024, Santa Clara County, CA 94041, Santa Clara County, CA 94043, Santa Clara County, CA 95002, Santa Clara County, CA 95014, Santa Clara County, CA 95117, Santa Clara County, CA 95128, Santa Clara County, CA 95129, Santa Clara County, CA 95130, Santa Clara County, CA

Frequently asked questions

What is the year built for 300 Potrero Avenue, Sunnyvale, CA 94085?

The development at 300 Potrero Avenue, Sunnyvale, CA 94085 was built in 1976.

What is the market value of 300 Potrero Avenue, Sunnyvale, CA 94085?

The current market value of 300 Potrero Avenue, Sunnyvale, CA 94085 is $8,501,874.

What is the total square footage of 300 Potrero Avenue, Sunnyvale, CA 94085?

300 Potrero Avenue, Sunnyvale, CA 94085 has a total of 50,017 square feet.

How many commercial spaces does this building have?

The number of commercial spaces in this building is 2.

How many active listings does 300 Potrero Avenue, Sunnyvale, CA 94085 have?

This address has 1 active listing(s).

Disclaimer

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