4227 Jupiter Ct, Union City, CA 94587 Property Records

Alameda County property record for 4227 Jupiter Ct, Union City, CA 94587

Property Summary

Property Type	Townhouse
Details	3 bd · 1.5 ba · 1,280 sqft · built 1974
Lot Size	0.034 acres (1,470 sqft)
Owner	2 Individual Names on Record
Last Sale	$735,000 (Dec 2024)
Tax Bill	$10,113 (2025)
Deeds & Mortgages	Feb 2023 Transfer Feb 2023 Transfer + 1 more
Flood Zone	Zone X (minimal risk)
APN	`483-103-135`

Property Details

APN / Parcel Number

Primary APN	`483-103-135`
Alternative APN	`483-0103-135-00`

Interior

Bedrooms	3 Beds
Full Baths	1.5 Baths
Half Baths	1 Half Bath
Total Rooms	5 Rooms
Stories	2 Stories
Building Area	1,280 sqft Living Area

Exterior

Year Built	Built 1974
Effective Year Built	Effective 1975
Architectural Style	Custom Design
Construction Type	Wood
Lot Area	1,470 sqft (0.034 acres)

Utilities, Heating & Cooling

Heating System	Forced Air with A/C

Location & Zoning

Street Address	4227 JUPITER CT
City	UNION CITY
State	CA
Zip	94587-4031
Property Category	Residential
Property Type	Residential > Condominium / Townhouse > Townhouse
Legal Description	LOT: 00011 BLK: TR: 3316
Legal Subdivision	TR 3316
Legal Tract	3316
Legal Lot Number	11
Jurisdiction	ALAMEDA CA
Township / Civil Division	FREMONT
Census Block Group	1
Census Block	1011
Census Tract	440306

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	4227 JUPITER CT, UNION CITY, CA 94587-4031
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

Deeds, Mortgages & Sale History

Date	Document
Feb 1, 2023	Affidavit of Death of Joint Tenant, Transfer
Feb 1, 2023	Intrafamily Transfer, Transfer
Aug 5, 2021	Grant Deed, Transfer

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Dec 9, 2024 · Amount on Record
Deed Sale	Dec 9, 2024 · Amount on Record
Prior Sale	Dec 8, 1999 · Amount on Record
Deed Document Number	2024150143
Prior Transfer Date	Jan 25, 2023
Prior Transfer Doc	0000010042
Record Updated	Sep 20, 2026

February 2023: Affidavit of Death of Joint Tenant, Transfer

Document Type	Affidavit of Death of Joint Tenant
Jurisdiction	ALAMEDA CA
Recording Date	Feb 1, 2023
Property Address	4227 JUPITER CT, UNION CITY, CA 94587-4031
Document Number	0000010042
Map Reference	MB 75 PG 88
Instrument Date	Jan 26, 2023
Instrument	2023010042
Transaction Type	Transfer
Record Updated	Mar 1, 2023

Transaction

Tax	$0.00
Amount Accuracy	No Consideration Stated
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	3271 MONTEVIDEO DR, SAN RAMON, CA 94583-2635

February 2023: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	ALAMEDA CA
Recording Date	Feb 1, 2023
Property Address	4227 JUPITER CT, UNION CITY, CA 94587-4031
Document Number	0000010043
Map Reference	MB 75 PG 88
Instrument Date	Jan 26, 2023
Instrument	2023010043
Transaction Type	Transfer
Record Updated	Jun 7, 2023

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	3271 MONTEVIDEO DR, SAN RAMON, CA 94583-2635

August 2021: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	ALAMEDA CA
Recording Date	Aug 5, 2021
Property Address	4227 JUPITER CT, UNION CITY, CA 94587-4031
Document Number	0000268291
Map Reference	MB 75 PG 88
Instrument Date	Jul 16, 2021
Instrument	2021268291
Transaction Type	Transfer
Record Updated	Aug 22, 2022

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	3271 MONTEVIDEO DR, SAN RAMON, CA 94583-2635

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		$749,700 (+2%) Land $224,910 Building $524,790
2025	$10,113.00 (+40.17%)	$735,000 (+51.32%) Land $220,500 Building $514,500
2023	$7,215.00	$485,711 Land $146,914 Building $338,797	$527,940

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 94% of the US · lower than 96% 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	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 976 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 2,000
RobinsonHSS Fixed Wireless	1,000 / 1,000
Tekify Fiber & Wireless Fixed Wireless	580 / 125
Etheric Networks Fixed Wireless	250 / 100
T-Mobile Fixed Wireless	100 / 20
AT&T DSL	100 / 20

May also be available: Sail Internet, Verizon.

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