642 Blackthorne Ave, El Cajon, CA 92020 Property Records

San Diego County property record for 642 Blackthorne Ave, El Cajon, CA 92020

Property Summary

Property Type	Single Family Home
Details	4 bd · 3.5 ba · 3,142 sqft · built 1970
Lot Size	0.328 acres (14,300 sqft)
Owner	Individual Name on File
Last Sale	$694,500 (Oct 2014)
Tax Bill	$8,603 (2025)
Deeds & Mortgages	Jan 2021 Mortgage Apr 2020 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`487-361-03-00`

Property Details

APN / Parcel Number

Primary APN	`487-361-03-00`

Interior

Bedrooms	4 Beds
Full Baths	3.5 Baths
Half Baths	1 Half Bath
Building Area	3,142 sqft Living Area

Exterior

Year Built	Built 1970
Effective Year Built	Effective 1970
Lot Area	14,300 sqft (0.328 acres)
Garage Type	Carport
Carport	Carport
Parking Spaces	2 Parking Spaces

Location & Zoning

Street Address	642 BLACKTHORNE AVE
City	EL CAJON
State	CA
Zip	92020-5609
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	RS-6
Legal Description	LOT 51 TR 002848
Legal Subdivision	GROSSMONT TERRACE
Legal Tract	002848
Legal Block	2
Legal Lot Number	51
Jurisdiction	SAN DIEGO CA
Township / Civil Division	SAN DIEGO
Census Block Group	2
Census Block	2009
Census Tract	16000

Owner

642 Blackthorne Ave is owned and occupied by an individual who bought it in October 2014.

Source: San Diego County records, as of July 28, 2026

Owner of Record	Individual Name on File
Mailing Address	642 BLACKTHORNE AVE, EL CAJON, CA 92020-5609
Occupancy	Owner Occupied
Owner Type	Individual

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
Jan 25, 2021	Deed of Trust, Mortgage · VA Mortgage AMERICAN PACIFIC MORTGAGE CORP
Apr 2, 2020	Deed of Trust, Mortgage · VA Mortgage NBKC BK

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Oct 14, 2014 · Amount on File
Deed Sale	Oct 14, 2014 · Amount on File
Prior Sale	Oct 29, 2008 · Amount on File
Deed Document Number	2014445575
Prior Transfer Date	Dec 20, 2006
Prior Transfer Doc	0000901278
Record Updated	Oct 29, 2026

January 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN DIEGO CA
Property Address	642 BLACKTHORNE AVE, EL CAJON, CA 92020-5609
Transaction Type	Mortgage
Record Updated	Jul 25, 2022
Title Company	WFG TITLE COMPANY OF CA

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	642 BLACKTHORNE AVE, EL CAJON, CA 92020-5609

Mortgage

Document Number	0000055322
Date	Jan 25, 2021
Instrument	2021-0055322

Lender

Name	AMERICAN PACIFIC MORTGAGE CORP
Type	Mortgage Company
Address	ROSEVILLE, CA 95661

Agreement

Type	VA Mortgage
Amount	Amount on Record
Term	361 Months
Due	Feb 1, 2051

April 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN DIEGO CA
Property Address	642 BLACKTHORNE AVE, EL CAJON, CA 92020-5609
Document Number	0000177459
Instrument Date	Apr 2, 2020
Transaction Type	Mortgage
Record Updated	Apr 27, 2020
Title Company	SOLIDIFI TITLE AND CLOSING, SOLIDIFI TITLE & CLOSING

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	642 BLACKTHORNE AVE EL CAJON CA 920205609, EL CAJON, CA 92020-5609

Mortgage

Document Number	0000177459
Date	Apr 7, 2020
Instrument	177459

Lender

Name	NBKC BK
Address	KANSAS CITY, MO 64114

Agreement

Type	VA Mortgage
Amount	Amount on Record
Term	360 Months
Due	Apr 6, 2050

Tax Assessment & Valuation

The 2025 property tax bill for 642 Blackthorne Ave was $8,603 with a veteran's exemption.

Source: San Diego County assessment roll, as of July 28, 2026

Property Jurisdictions

Type	Name
State	California
County	San Diego County
Municipality	El Cajon City
Secondary School District	Grossmont Union High School District (09 - 12)
Elementary School District	La Mesa-Spring Valley School District (KG - 08)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$851,367 (+2%) Land $259,033 Building $592,334
2025	$8,603.00	$834,674 Land $253,954 Building $580,720
2023	$7,918.00 (-16.29%)	$802,265 Land $244,094 Building $558,171
2022	$9,459.00

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

Flood

FEMA maps place 642 Blackthorne Ave in Zone X, an area of minimal flood risk.

Source: FEMA National Flood Hazard Layer, effective September 3, 2026

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it

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

Wildfire

The area around 642 Blackthorne Ave has no burnable land within ember reach, so its wildfire risk is not rated.

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

Wildfire Risk	Not rated no burnable land 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	HELIX WATER DISTRICT serves 277,918 people · EPA ID CA3710010
Water Source	Surface water
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 373 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
AT&T Fiber · DSL	5,000 / 5,000
Cox Communications Cable	2,000 / 100
Starlink Satellite	280 / 30

May also be available: T-Mobile, Verizon.

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