4248 Comet Cir, Union City, CA 94587 Property Records

Alameda County property record for 4248 Comet Cir, Union City, CA 94587

Property Summary

Property Type	Townhouse
Details	3 bd · 1.5 ba · 1,137 sqft · built 1972
Lot Size	0.038 acres (1,656 sqft)
Owner	2 Individual Names on Record
Last Sale	$700,000 (Jul 2021)
Tax Bill	$10,212 (2025)
Deeds & Mortgages	Jul 2021 Sale & Mortgage Nov 2020 Mortgage + 2 more
Flood Zone	Zone X (minimal risk)
APN	`483-102-1`

Property Details

APN / Parcel Number

Primary APN	`483-102-1`
Alternative APN	`483-0102-001-00`

Interior

Bedrooms	3 Beds
Full Baths	1.5 Baths
Half Baths	1 Half Bath
Total Rooms	5 Rooms
Stories	2 Stories
Building Area	1,137 sqft Living Area

Exterior

Year Built	Built 1972
Effective Year Built	Effective 1973
Architectural Style	Custom Design
Construction Type	Wood
Lot Area	1,656 sqft (0.038 acres)
Parking Spaces	2 Parking Spaces

Location & Zoning

Street Address	4248 COMET CIR
City	UNION CITY
State	CA
Zip	94587-4026
Property Category	Residential
Property Type	Residential > Condominium / Townhouse > Townhouse
Legal Description	LOT: 00101 BLK: TR: 3307
Legal Subdivision	TRACT 3307
Legal Tract	3307
Legal Lot Number	101
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	4248 COMET CIR, UNION CITY, CA 94587-4026
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

Deeds, Mortgages & Sale History

Date	Document
Jul 29, 2021	Grant Deed, Transfer · Conventional Mortgage GUILD MORTGAGE CO
Nov 17, 2020	Intrafamily Transfer, Transfer · FHA Mortgage QUICKEN LOANS LLC
Oct 23, 2019	Grant Deed, Transfer · FHA Mortgage UNITED WHOLESALE MORTGAGE
Jul 20, 2017	Deed of Trust, Mortgage · Conventional Mortgage WATERMARK CAP

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jul 29, 2021 · Amount on Record
Deed Sale	Jul 29, 2021 · Amount on Record
Prior Sale	Nov 17, 2020
Deed Document Number	2021261625
Prior Transfer Date	Nov 9, 2020
Prior Transfer Doc	0000314226
Record Updated	Oct 29, 2026

July 2021: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	ALAMEDA CA
Recording Date	Jul 29, 2021
Property Address	4248 COMET CIR, UNION CITY, CA 94587-4026
Document Number	0000261625
Map Reference	MB 74 PG 5-8
Instrument Date	Jun 22, 2021
Instrument	2021261625
Transaction Type	Transfer
Record Updated	Aug 17, 2021
Title Company	CHICAGO TITLE COMPANY

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	4248 COMET CIR, UNION CITY, CA 94587-4026

Mortgage

Document Number	0000261626
Date	Jul 29, 2021
Instrument	2021261626

Lender

Name	GUILD MORTGAGE CO
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Aug 1, 2051

November 2020: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	ALAMEDA CA
Recording Date	Nov 17, 2020
Property Address	4248 COMET CIR, UNION CITY, CA 94587-4026
Document Number	0000314226
Map Reference	MB 74 PG 5-8
Instrument Date	Nov 9, 2020
Instrument	2020314226
Transaction Type	Transfer
Record Updated	Aug 19, 2021
Title Company	OLD REPUBLIC TITLE COMPANY

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	4248 COMET CIR, UNION CITY, CA 94587-4026

Mortgage

Document Number	0000314227
Date	Nov 17, 2020
Instrument	2020314227

Lender

Name	QUICKEN LOANS LLC
Type	Mortgage Company

Agreement

Type	FHA Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Dec 1, 2050

October 2019: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	ALAMEDA CA
Recording Date	Oct 23, 2019
Property Address	4248 COMET CIR, UNION CITY, CA 94587-4026
Document Number	0000215814
Map Reference	MB 74 PG 5-8
Instrument Date	Oct 18, 2019
Instrument	2019215814
Transaction Type	Transfer
Record Updated	Aug 19, 2021
Title Company	OLD REPUBLIC TITLE COMPANY

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	4248 COMET CIR, UNION CITY, CA 94587-4026

Mortgage

Document Number	0000215815
Date	Oct 23, 2019
Instrument	2019215815

Lender

Name	UNITED WHOLESALE MORTGAGE
Type	Mortgage Company

Agreement

Type	FHA Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Nov 1, 2049

July 2017: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	ALAMEDA CA
Property Address	4248 COMET CIR, UNION CITY, CA 94587-4026
Document Number	0000163057
Instrument Date	Jul 20, 2017
Transaction Type	Mortgage
Record Updated	Aug 22, 2017
Title Company	OTHER

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants with Right of Survivorship
Address	5280 FALMOUTH PL NEWARK CA 945601948, NEWARK, CA 94560-1948

Mortgage

Document Number	0000163057
Date	Jul 26, 2017
Instrument	163057

Lender

Name	WATERMARK CAP
Type	Mortgage Company
Address	IRVINE, CA 92618

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Jul 25, 2047

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		$712,000 (-4.15%) Land $213,600 Building $498,400
2025	$10,212.00 (-1.27%)	$742,840 (+4.04%) Land $222,852 Building $519,988
2024	$10,343.00 (+3.13%)
2023	$10,029.00	$714,000 Land $214,200 Building $499,800	$676,080

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 712 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	580 / 125
Etheric Networks Fixed Wireless	250 / 100
AT&T Fixed Wireless · DSL	100 / 20
T-Mobile Fixed Wireless	100 / 20

May also be available: GeoLinks, Unwired, Verizon.

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