10231 Bubb Rd, Cupertino, CA 95014 Property Records

Santa Clara County property record for 10231 Bubb Rd, Cupertino, CA 95014

Property Summary

Property Type	R&D Facility, Laboratory
Details	18,587 sqft · built 1969
Lot Size	1.06 acres (46,347 sqft)
Owner	Company Name on File
Last Sale	$9,365,000 (Oct 2020)
Tax Bill	$121,366 (2025)
Deeds & Mortgages	Oct 2020 Sale May 2020 Sale + 2 more
Flood Zone	Zone X (moderate risk)
APN	`357-20-007`

Property Details

APN / Parcel Number

Primary APN	`357-20-007`

Interior

Stories	1 Story
Building Area	18,587 sqft Total Area
1st Floor Area	18,587 sqft
Fire Sprinklers	Fire Sprinklers
Elevator	Elevator

Exterior

Year Built	Built 1969
Effective Year Built	Effective 1969
Architectural Style	Custom Design
Construction Type	Concrete
Fire Resistance	Masonry Walls, Wood Interior
Lot Area	46,347 sqft

Utilities, Heating & Cooling

Cooling System	HVAC

Location & Zoning

Street Address	10231 BUBB RD
City	CUPERTINO
State	CA
Zip	95014-4167
Property Category	Industrial
Property Type	Industrial > R&D Facility, Laboratory
Local Zoning Code	ML-RC
Legal Description	TRACT 4398 WEST VALLEY INDUSTRIAL PARK BOOK 231 PAGE 50 PAGE 51 LOT 10
Legal Subdivision	WEST VALLEY INDUST PARK
Legal Tract	4398
Legal Lot Number	10
Jurisdiction	SANTA CLARA CA
Township / Civil Division	SAN JOSE
Census Block Group	3
Census Block	3008
Census Tract	507701

Owner

10231 Bubb Rd, an industrial property, is owned by a company that bought it in October 2020.

Source: Santa Clara County records, as of July 27, 2026

Owner of Record	Company Name on File
Mailing Address	2245 RINGWOOD AVE, SAN JOSE, CA 95131-1737
Owner Type	Company
Vesting	Limited Liability Company

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Deeds, Mortgages & Sale History

Date	Document
Oct 22, 2020	Grant Deed, Transfer NOT AVAILABLE
May 29, 2020	Grant Deed, Transfer FIRST AMERICAN TITLE, FIRST AMERICAN TITLE INSURANCE
Apr 3, 2020	Quit Claim Deed, Transfer FIRST AMERICAN TITLE COMPANY NATIONAL, FIRST AMERICAN TITLE CO NAT'L
Dec 17, 2018	Loan Modification, Mortgage · Line of Credit MUFG UNION BK NA

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Oct 22, 2020 · Amount on File
Deed Sale	Oct 22, 2020 · Amount on File
Prior Sale	Dec 18, 1998 · Amount on File
Deed Document Number	202024668277
Prior Transfer Date	Feb 13, 2009
Prior Transfer Doc	0020138813
Record Updated	Oct 29, 2026

October 2020: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SANTA CLARA CA
Recording Date	Oct 22, 2020
Property Address	10231 BUBB RD, CUPERTINO, CA 95014-4167
Document Number	0024668277
Instrument Date	Oct 16, 2020
Instrument	24668277
Transaction Type	Transfer
Record Updated	Nov 6, 2020
Title Company	NOT AVAILABLE

Transaction

Amount	Amount on Record
Tax	$10,302.00
Amount Accuracy	Full Value
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	2245-2247 RINGWOOD AVE SAN JOSE CA 951311737, SAN JOSE, CA 95131-1737

May 2020: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SANTA CLARA CA
Recording Date	May 29, 2020
Property Address	10231 BUBB RD, CUPERTINO, CA 95014-4167
Document Number	0024492077
Instrument Date	May 27, 2020
Instrument	24492077
Transaction Type	Transfer
Record Updated	Jun 9, 2020
Title Company	FIRST AMERICAN TITLE, FIRST AMERICAN TITLE INSURANCE

Transaction

Tax	$0.00
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	2440 W EL CAMINO REAL MOUNTAIN VIEW CA 940401497, MOUNTAIN VIEW, CA 94040-1497

April 2020: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	SANTA CLARA CA
Recording Date	Apr 3, 2020
Property Address	10231 BUBB RD, CUPERTINO, CA 95014-4167
Document Number	0024446447
Instrument Date	Mar 31, 2020
Instrument	24446447
Transaction Type	Transfer
Record Updated	Apr 27, 2020
Title Company	FIRST AMERICAN TITLE COMPANY NATIONAL, FIRST AMERICAN TITLE CO NAT'L

Transaction

Tax	$0.00
Additional	Quitclaim Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	10231 BUBB RD CUPERTINO CA 950144167, CUPERTINO, CA 95014-4167

December 2018: Loan Modification, Mortgage

Document Type	Loan Modification
Jurisdiction	SANTA CLARA CA
Recording Date	Dec 17, 2018
Property Address	10231 BUBB RD, CUPERTINO, CA 95014-4167
Instrument Date	Dec 7, 2018
Instrument	24082902
Transaction Type	Mortgage
Record Updated	Jan 3, 2019
Title Company	FIRST AMERICAN TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company

Mortgage

Document Number	0024082902
Date	Dec 17, 2018
Instrument	24082902

Lender

Name	MUFG UNION BK NA
Type	Bank
Address	37151 E IMPERIAL HWY 1 ST FL, BREA, CA 92821

Agreement

Type	Line of Credit
Amount	Amount on Record

Interest

Rate Type	Adjustable Rate

Tax Assessment & Valuation

The 2025 property tax bill for 10231 Bubb Rd was $121,366, up 2.8% from the year before.

Source: Santa Clara County assessment roll, as of July 27, 2026

Property Jurisdictions

Type	Name
State	California
County	Santa Clara County
Municipality	Cupertino City
Elementary School District	Cupertino Union Elementary School District (KG - 08)
Secondary School District	Fremont Union High School District (09 - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$10,339,529 (+2%) Land $7,931,714 Building $2,407,815
2025	$121,366.00 (+2.84%)	$10,136,794 Land $7,776,191 Building $2,360,603
2024	$118,010.00 (+0.78%)
2023	$117,094.00 (+1.81%)	$9,743,172 Land $7,474,233 Building $2,268,939
2022	$115,012.00

Assessed value is set for property tax purposes and is not a market price estimate.

Flood

FEMA maps place 10231 Bubb Rd in Zone X, an area of moderate flood risk.

Source: FEMA National Flood Hazard Layer, effective January 18, 2026

FEMA Flood Zone	Zone X moderate risk
500-Year Floodplain	Yes 0.2% annual chance
Flood Insurance Requirement	Not required lenders may require it

Values are read at the parcel center point; lenders make the official flood determination.

Wildfire

Wildfire risk around 10231 Bubb Rd is low, with less than a 0.01% annual chance of wildfire.

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	Low lower than 95% of the US · lower than 97% of California
Wildfire Likelihood	Under 0.01% annual chance
Exposure	None beyond ember reach

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water System	CITY OF CUPERTINO serves 16,336 people · EPA ID CA4310018
Water Source	Purchased surface water from several systems
Last State Inspection	Feb 2025
Lead	Under 1 ppb (2020–2022) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	None last 3 years

Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.

Internet Providers

Source: FCC Broadband Data Collection, based on 442 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
AT&T Fiber · Fixed Wireless, DSL in parts of the area	5,000 / 5,000
Xfinity Cable	2,000 / 2,000
Verizon Fixed Wireless	1,000 / 75
Etheric Networks Fixed Wireless	250 / 100
Ridge Wireless Fixed Wireless	100 / 60
T-Mobile Fixed Wireless	100 / 20

May also be available: GeoLinks, Sail Internet.

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