1849 Diamond St, San Marcos, CA 92078 Property Records

San Diego County property record for 1849 Diamond St, San Marcos, CA 92078

Property Summary

Property Type	Light Industrial
Details	20 bd · 8 ba · 5,576 sqft · built 1989
Lot Size	0.7 acres (30,492 sqft)
Owner	Company Name on Record
Last Sale	$1,900,000 (Jun 2015)
Tax Bill	$25,466 (2025)
Deeds & Mortgages	Sep 2020 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`223-340-11-00`

Property Details

APN / Parcel Number

Primary APN	`223-340-11-00`

Interior

Bedrooms	20 Beds
Full Baths	8 Baths
Stories	2 Stories
Building Area	5,576 sqft Total Area
Gross Area	15,576 sqft

Exterior

Year Built	Built 1989
Effective Year Built	Effective 1989
Exterior Material	Precast Concrete Panel
Construction Type	Concrete
Roof Type	Flat
Roof Material	Built-Up Asphalt
Lot Area	30,492 sqft (0.7 acres)

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Forced Air with A/C

Location & Zoning

Street Address	1849 DIAMOND ST
City	SAN MARCOS
State	CA
Zip	92078-5128
Property Category	Industrial
Property Type	Industrial > Light Industrial
Local Zoning Code	L-I
Legal Description	LOT 11 TR 010750
Legal Subdivision	SAN MARCOS THE QUORUM
Legal Tract	010750
Legal Block	1
Legal Lot Number	11
Jurisdiction	SAN DIEGO CA
Township / Civil Division	OCEANSIDE-ESCONDIDO
Census Block Group	1
Census Block	1004
Census Tract	20042

Owner

Source: San Diego County records, as of July 21, 2026

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

Owner of Record	Company Name on Record
Mailing Address	1849 DIAMOND ST, SAN MARCOS, CA 92078-5128
Owner Type	Company

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Jun 3, 2015 · Amount on Record
Deed Sale	Jun 3, 2015 · Amount on Record
Prior Sale	Dec 15, 1988 · Amount on Record
Deed Document Number	2015282889
Last Transfer Date	Sep 17, 2020
Transfer Doc	0000560947
Record Updated	Sep 20, 2026

September 2020: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	SAN DIEGO CA
Recording Date	Sep 22, 2020
Property Address	1849 DIAMOND ST, SAN MARCOS, CA 92078-5127
Document Number	0000560947
Map Reference	MAP 10750
Instrument Date	Sep 17, 2020
Instrument	2020-0560947
Transaction Type	Transfer
Record Updated	Aug 24, 2021
Title Company	TICOR TITLE SD COMMERCIAL

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	1849 DIAMOND ST, SAN MARCOS, CA 92078-5127

Mortgage

Document Number	0000560948
Date	Sep 22, 2020
Instrument	2020-0560948

Lender

Name	JPMORGAN CHASE BANK NA
Type	Bank

Agreement

Type	Commercial Mortgage
Amount	Amount Recorded

Interest

Rate Type	Adjustable Rate

Tax Assessment & Valuation

Source: San Diego County assessment roll, as of July 21, 2026

Property Jurisdictions

Type	Name
State	California
County	San Diego County
Municipality	San Marcos City
Unified School District	San Marcos Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$2,329,175 (+2%) Land $931,669 Building $1,397,506
2025	$25,466.00 (+5.76%)	$2,283,505 (+4.04%) Land $913,401 Building $1,370,104
2024	$24,079.00 (+1.96%)
2023	$23,615.00 (+1.73%)	$2,194,836 Land $877,934 Building $1,316,902
2022	$23,214.00

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

Flood

Source: FEMA National Flood Hazard Layer, effective September 3, 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	1 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	Moderate above 40% of the US · lower than 76% of California
Wildfire Likelihood	0.05% 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	VALLECITOS WD serves 114,700 people · EPA ID CA3710002
Water Source	Purchased surface water from several systems
Last State Inspection	Mar 2022
Lead	Under 1 ppb (2024–2026) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	1 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 200 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
AT&T Fiber · DSL in parts of the area	5,000 / 5,000
Spectrum Cable	1,000 / 50
Starlink Satellite	280 / 30

May also be available: Cox Communications, San Diego Broadband, T-Mobile, Verizon.