607 Alder Ln, Diamond Bar (Walnut), CA 91789 Property Records

Los Angeles County property record for 607 Alder Ln, Diamond Bar, CA 91789

Property Summary

Property Type	Planned Unit Development
Details	2 bd · 3 ba · 1,368 sqft · built 1986
Lot Size	0.034 acres (1,475 sqft)
Owner	2 Company Names on File
Last Sale	$400,000 (Aug 2025)
Tax Bill	$7,119 (2025)
Deeds & Mortgages	Jan 2026 Transfer Apr 2023 Transfer + 1 more
Flood Zone	Zone X (minimal risk)
APN	`8719-018-039`

Property Details

APN / Parcel Number

Primary APN	`8719-018-039`

Interior

Bedrooms	2 Beds
Full Baths	3 Baths
Building Area	1,368 sqft Living Area

Exterior

Year Built	Built 1986
Effective Year Built	Effective 1986
Construction Type	Wood
Lot Area	1,475 sqft (0.034 acres)

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	607 ALDER LN
City	WALNUT
State	CA
Zip	91789-3345
Property Category	Residential
Property Type	Residential > Condominium / Townhouse > Planned Unit Development
Local Zoning Code	LCR312UDP*
Legal Description	TR=39833 LOT 39
Legal Subdivision	39833
Legal Tract	39833
Legal Block	3
Legal Lot Number	39
Jurisdiction	LOS ANGELES CA
Township / Civil Division	EAST SAN GABRIEL VALLEY
Census Block Group	3
Census Block	3001
Census Tract	403328

Owner

607 Alder Ln, a planned unit development, is owned by a company that bought it in August 2025.

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

Owner of Record	2 Company Names on File
Mailing Address	607 ALDER LN, WALNUT, CA 91789-3345
Owner Type	Company
Vesting	Life Tenant

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 20, 2026	Intrafamily Transfer, Transfer
Apr 11, 2023	Intrafamily Transfer, Transfer
Nov 18, 2020	Deed of Trust, Mortgage · Conventional Mortgage NETWORK CAPITAL FUNDING CORP

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Aug 26, 2025 · Amount on File
Deed Sale	Aug 26, 2025 · Amount on File
Prior Sale	Mar 24, 2025 · Amount on File
Deed Document Number	2025580331
Prior Transfer Date	Jan 22, 2023
Prior Transfer Doc	0000229590
Record Updated	Oct 29, 2026

January 2026: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	LOS ANGELES CA
Recording Date	Jan 20, 2026
Property Address	607 ALDER LN, DIAMOND BAR, CA 91789-3345
Document Number	0000044052
Map Reference	MB 1035 PG 38-41
Instrument Date	Nov 14, 2025
Instrument	26-0044052
Transaction Type	Transfer
Record Updated	Feb 5, 2026

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
Relationship	Living Trust
Address	607 ALDER LN, DIAMOND BAR, CA 91789-3345

April 2023: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	LOS ANGELES CA
Recording Date	Apr 11, 2023
Property Address	607 ALDER LN, DIAMOND BAR, CA 91789-3345
Document Number	0000229590
Map Reference	MB 1035 PG 38-41
Instrument Date	Jan 22, 2023
Instrument	23-0229590
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
Relationship	Family Living Trust
Address	6O7ALDER LANE, WALNUT, CA 91789

November 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	LOS ANGELES CA
Property Address	607 ALDER LN, DIAMOND BAR, CA 91789-3345
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	UNISOURCE TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	607 ALDER LN, WALNUT, CA 91789-3345

Mortgage

Document Number	0001479211
Date	Nov 18, 2020
Instrument	20-1479211

Lender

Name	NETWORK CAPITAL FUNDING CORP
Type	Mortgage Company
Address	IRVINE, CA 92618

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Dec 1, 2050

Tax Assessment & Valuation

The 2025 property tax bill for 607 Alder Ln was $7,119.

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		$640,000 (+14.09%) Land $448,000 Building $192,000
2025	$7,119.00 Homeowner's exemption	$560,961 Land $136,646 Building $424,315
2023	$6,620.00 (+2.18%) Homeowner's exemption	$539,181 Land $131,341 Building $407,840
2022	$6,479.00

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

Flood

FEMA maps place 607 Alder Ln in Zone X, an area of minimal flood risk.

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

Wildfire risk around 607 Alder Ln is low, with a 0.02% annual chance of wildfire.

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

Wildfire Risk	Low lower than 96% of the US · lower than 97.4% of California
Wildfire Likelihood	0.02% 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 200 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Frontier Fiber	7,000 / 7,000
Spectrum Cable	1,000 / 1,000

May also be available: GeoLinks, T-Mobile, Verizon.

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