1539 Emerald Ln, Diamond Bar, CA 91765 Property Records

Los Angeles County property record for 1539 Emerald Ln, Diamond Bar, CA 91765

Property Summary

Property Type	Single Family Home
Details	5 bd · 5 ba · 4,521 sqft · built 1998
Lot Size	0.187 acres (8,144 sqft)
Owner	2 Company Names on Record
Last Sale	$496,000 (Feb 1999)
Tax Bill	$10,258 (2025)
Deeds & Mortgages	May 2019 Line of Credit Mar 2017 Transfer
Flood Zone	Zone X (minimal risk)
APN	`8763-031-037`

Property Details

APN / Parcel Number

Primary APN	`8763-031-037`

Interior

Bedrooms	5 Beds
Full Baths	5 Baths
Building Area	4,521 sqft Living Area

Exterior

Year Built	Built 1998
Effective Year Built	Effective 1998
Construction Type	Wood
Lot Area	8,144 sqft (0.187 acres)

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	1539 EMERALD LN
City	DIAMOND BAR
State	CA
Zip	91765-4044
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	LCR1
Legal Description	TR=52228 LOT 37
Legal Subdivision	52228
Legal Tract	52228
Legal Block	3
Legal Lot Number	37
Jurisdiction	LOS ANGELES CA
Township / Civil Division	EAST SAN GABRIEL VALLEY
Census Block Group	3
Census Block	3015
Census Tract	408707

Owner

Source: Los Angeles County records, as of August 25, 2026

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

Owner of Record	2 Company Names on Record
Mailing Address	1539 EMERALD LN, DIAMOND BAR, CA 91765-4044
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust

Deeds, Mortgages & Sale History

Date	Document
May 21, 2019	Deed of Trust, Mortgage · Line of Credit CATHAY BANK
Mar 20, 2017	Quit Claim Deed, Transfer Quitclaim

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Feb 17, 1999 · Amount on Record
Deed Sale	Feb 17, 1999 · Amount on Record
Deed Document Number	1999252190
Last Transfer Date	Mar 10, 2017
Transfer Doc	0000311102
Record Updated	Oct 29, 2026

May 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	LOS ANGELES CA
Property Address	1539 EMERALD LN, DIAMOND BAR, CA 91765-4044
Transaction Type	Mortgage
Record Updated	Jul 20, 2022
Title Company	STEWART TITLE OF CA INC

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000465024
Date	May 21, 2019
Instrument	19-0465024

Lender

Name	CATHAY BANK
Type	Bank
Address	EL MONTE, CA 91731

Agreement

Type	Line of Credit
Amount	Amount Recorded

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

March 2017: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	LOS ANGELES CA
Recording Date	Mar 20, 2017
Property Address	1539 EMERALD LN, DIAMOND BAR, CA 91765-4044
Document Number	0000311102
Instrument Date	Mar 10, 2017
Instrument	311102
Transaction Type	Transfer
Record Updated	Mar 30, 2017

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Revocable Trust
Address	1539 EMERALD LN DIAMOND BAR CA 917654044, DIAMOND BAR, CA 91765-4044

Tax Assessment & Valuation

Source: Los Angeles County assessment roll, as of August 25, 2026

Property Jurisdictions

Type	Name
State	California
County	Los Angeles County
Municipality	Diamond Bar City
Unified School District	Walnut Valley Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$793,117 (+2%) Land $232,651 Building $560,466
2025	$10,258.00 (+9.49%) Homeowner's exemption	$777,567 (+4.04%) Land $228,090 Building $549,477
2023	$9,369.00 (+2.11%) Homeowner's exemption	$747,375 Land $219,234 Building $528,141
2022	$9,175.00

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

Flood

Source: FEMA National Flood Hazard Layer, effective September 30, 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

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

Wildfire Risk	Low lower than 99.1% of the US · lower than 99.2% 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	WALNUT VALLEY WATER DISTRICT serves 100,941 people · EPA ID CA1910234
Water Source	Purchased surface water from several systems
Last State Inspection	Jun 2023
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 254 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Spectrum Cable	1,000 / 1,000
T-Mobile Fixed Wireless	100 / 20

May also be available: AT&T, Frontier, GeoLinks, Verizon.

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