4812 Rocklin Dr, Union City, CA 94587 Property Records

Alameda County property record for 4812 Rocklin Dr, Union City, CA 94587

Property Summary

Property Type	Single Family Home
Details	4 bd · 3 ba · 2,474 sqft · built 1980
Lot Size	0.133 acres (5,810 sqft)
Owner	2 Individual Names on Record
Last Sale	$500,000 (Aug 2000)
Tax Bill	$10,271 (2025)
Deeds & Mortgages	Sep 2020 Mortgage Jun 2019 Mortgage + 3 more
Flood Zone	Zone X (minimal risk)
APN	`543-423-57`

Property Details

APN / Parcel Number

Primary APN	`543-423-57`
Alternative APN	`543-0423-057-00`

Interior

Bedrooms	4 Beds
Full Baths	2.5 Baths
Half Baths	1 Half Bath
Building Area	2,474 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1980
Effective Year Built	Effective 1982
Architectural Style	L-Shape
Exterior Material	Wood
Construction Type	Wood
Roof Material	Wood Shingle
Lot Area	5,810 sqft (0.133 acres)
Lot Dimensions	100 ft deep x 60 ft wide

Utilities, Heating & Cooling

Heating System	Forced Air with A/C
Heating Fuel	Gas
Sewer	Municipal
Water Source	Commercial

Location & Zoning

Street Address	4812 ROCKLIN DR
City	UNION CITY
State	CA
Zip	94587-5511
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	RS6000
Legal Description	LOT: 00065 BLK: TR: 4452
Legal Subdivision	TRACT 4452
Legal Tract	4452
Legal Lot Number	65
Jurisdiction	ALAMEDA CA
Township / Civil Division	FREMONT
Census Block Group	2
Census Block	2000
Census Tract	441501

Owner

Source: Alameda County records, as of August 5, 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	2 Individual Names on Record
Mailing Address	4812 ROCKLIN DR, UNION CITY, CA 94587-5511
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

Deeds, Mortgages & Sale History

Date	Document
Sep 17, 2020	Deed of Trust, Mortgage · Conventional Mortgage UNITED WHOLESALE MORTGAGE
Jun 11, 2019	Deed of Trust, Mortgage · Conventional Mortgage QUICKEN LNS
Sep 24, 2018	Quit Claim Deed, Transfer CHICAGO TITLE COMPANY
Sep 24, 2018	Quit Claim Deed, Transfer · Conventional Mortgage QUICKEN LNS
Sep 24, 2018	Affidavit of Death, Transfer CHICAGO TITLE COMPANY

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Aug 15, 2000 · Amount on Record
Deed Sale	Aug 15, 2000 · Amount on Record
Prior Sale	Dec 28, 1995 · Amount on Record
Deed Document Number	2000242866
Last Transfer Date	Sep 19, 2018
Transfer Doc	0000185397
Record Updated	Oct 29, 2026

September 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	ALAMEDA CA
Property Address	4812 ROCKLIN DR, UNION CITY, CA 94587-5511
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	FIDELITY TITLE COMPANY

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	4812 ROCKLIN DR, UNION CITY, CA 94587-5511

Mortgage

Document Number	0000237010
Date	Sep 17, 2020
Instrument	2020237010

Lender

Name	UNITED WHOLESALE MORTGAGE
Type	Mortgage Company
Address	PONTIAC, MI 48341

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Oct 1, 2050

June 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	ALAMEDA CA
Property Address	4812 ROCKLIN DR, UNION CITY, CA 94587-5511
Document Number	0000114105
Instrument Date	Jun 11, 2019
Transaction Type	Mortgage
Record Updated	Jul 26, 2019
Title Company	WFG

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants with Right of Survivorship
Address	4812 ROCKLIN DR UNION CITY CA 945875511, UNION CITY, CA 94587-5511

Mortgage

Document Number	0000114105
Date	Jun 17, 2019
Instrument	114105

Lender

Name	QUICKEN LNS
Type	Funding / Finance Company
Address	DETROIT, MI 48226-1906

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Jun 16, 2049

September 2018: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	ALAMEDA CA
Recording Date	Sep 24, 2018
Property Address	4812 ROCKLIN DR, UNION CITY, CA 94587-5511
Document Number	0000185397
Instrument Date	Sep 19, 2018
Instrument	185397
Transaction Type	Transfer
Record Updated	Oct 11, 2018
Title Company	CHICAGO TITLE COMPANY

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Separate Estate/Property
Address	4812 ROCKLIN DR UNION CITY CA 945875511, UNION CITY, CA 94587-5511

September 2018: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	ALAMEDA CA
Recording Date	Sep 24, 2018
Property Address	4812 ROCKLIN DR, UNION CITY, CA 94587-5511
Document Number	0000185398
Instrument Date	Sep 17, 2018
Instrument	185398
Transaction Type	Transfer
Record Updated	Oct 11, 2018
Title Company	CHICAGO TITLE COMPANY

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants with Right of Survivorship
Address	4812 ROCKLIN DR UNION CITY CA 945875511, UNION CITY, CA 94587-5511

Mortgage

Document Number	185399
Date	Sep 24, 2018
Instrument	185399

Lender

Name	QUICKEN LNS
Type	Funding / Finance Company
Address	DETROIT, MI 48226-1906

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Sep 23, 2048

September 2018: Affidavit of Death, Transfer

Document Type	Affidavit of Death
Jurisdiction	ALAMEDA CA
Recording Date	Sep 24, 2018
Property Address	4812 ROCKLIN DR, UNION CITY, CA 94587-5511
Document Number	0000185396
Instrument Date	Sep 11, 2018
Instrument	185396
Transaction Type	Transfer
Record Updated	Oct 11, 2018
Title Company	CHICAGO TITLE COMPANY

Transaction

Tax	$0.00
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	4812 ROCKLIN DR UNION CITY CA 945875511, UNION CITY, CA 94587-5511

Tax Assessment & Valuation

Source: Alameda County assessment roll, as of August 5, 2026

Property Jurisdictions

Type	Name
State	California
County	Alameda County
Municipality	Union City
Unified School District	New Haven Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$761,430 (+1.07%) Land $230,529 Building $537,901
2025	$10,271.00 (+0.47%) Homeowner's exemption	$753,364 (+4.04%) Land $226,009 Building $527,355
2023	$10,223.00 Homeowner's exemption	$724,114 Land $217,234 Building $506,880	$1,605,780

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

Flood

Source: FEMA National Flood Hazard Layer, effective May 25, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it
Nearby Flood Policies	2 in force

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Wildfire

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

Wildfire Risk	Low lower than 80% of the US · lower than 88% of California
Wildfire Likelihood	0.01% annual chance
Exposure	Indirect within 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	ALAMEDA COUNTY WATER DISTRICT serves 344,000 people · EPA ID CA0110001
Water Source	Surface water
Last State Inspection	Nov 2025
Lead	Under 1 ppb (2022–2024) 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 799 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 250
RobinsonHSS Fixed Wireless	1,000 / 1,000
Tekify Fiber & Wireless Fixed Wireless	570 / 120
Verizon Fixed Wireless	300 / 20
Etheric Networks Fixed Wireless	250 / 100
Sail Internet Fixed Wireless	200 / 100
T-Mobile Fixed Wireless	100 / 20
AT&T Fixed Wireless · DSL	100 / 20

May also be available: GeoLinks.

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