23403 Robinbrook Pl, Diamond Bar, CA 91765 Property Records

Los Angeles County property record for 23403 Robinbrook Pl, Diamond Bar, CA 91765

Property Summary

Property Type	Single Family Home
Details	4 bd · 3 ba · 2,252 sqft · built 1974
Lot Size	0.187 acres (8,157 sqft)
Owner	2 Company Names on File
Last Sale	$835,000 (Jul 2016)
Tax Bill	$12,281 (2025)
Deeds & Mortgages	Aug 2020 Transfer
Flood Zone	Zone X (minimal risk)
APN	`8702-005-035`

Property Details

APN / Parcel Number

Primary APN	`8702-005-035`

Interior

Bedrooms	4 Beds
Full Baths	3 Baths
Total Rooms	9 Rooms
Stories	2 Stories
Building Area	2,252 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1974
Effective Year Built	Effective 1974
Construction Type	Wood
Lot Area	8,157 sqft (0.187 acres)

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	23403 ROBINBROOK PL
City	DIAMOND BAR
State	CA
Zip	91765-2635
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	LCR18000*
Legal Description	TRACT NO 31060 LOT 72
Legal Subdivision	31060
Legal Tract	31060
Legal Block	3
Legal Lot Number	72
Jurisdiction	LOS ANGELES CA
Township / Civil Division	EAST SAN GABRIEL VALLEY
Census Block Group	3
Census Block	3007
Census Tract	403324

Owner

Source: Los Angeles County records · APN 8702-005-035

Assessment roll updated May 21, 2026 · Last verified June 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 File
Mailing Address	23403 ROBINBROOK PL, DIAMOND BAR, CA 91765-2635
Owner Type	Company
Vesting	Borrower in Default

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Sale	Jul 05, 2016 · Amount on Record
Deed Sale	Jul 05, 2016 · Amount on Record
Deed Document Number	2016775553
Last Transfer Date	Jun 12, 2020
Transfer Doc	0000886697
Record Updated	Sep 20, 2026

August 2020: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	LOS ANGELES CA
Recording Date	Aug 04, 2020
Property Address	23403 ROBINBROOK PL, DIAMOND BAR, CA 91765-2635
Document Number	0000886697
Instrument Date	Jun 12, 2020
Instrument	886697
Transaction Type	Transfer
Record Updated	Aug 20, 2020
Title Company	NOT AVAILABLE

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	23403 ROBINBROOK PL DIAMOND BAR CA 917652635, DIAMOND BAR, CA 91765-2635

Tax Assessment & Valuation

Source: Los Angeles County records · Assessment roll updated May 21, 2026 · Last verified June 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

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

Year	Tax Bill	Assessed Value
2025	$12,281.00 (+7.34%)	$969,082 (+4.04%) Land $482,568 Building $486,514
2023	$11,441.00 (+2.11%)	$931,453 Land $463,830 Building $467,623
2022	$11,205.00

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Los Angeles County (06037C), as of September 30, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 060374033243, as of September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition, as of 2020 · Last verified October 2026

Flood

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it
Nearby Flood Policies	1 in force

Wildfire

Wildfire Risk	Not rated no burnable land within ember reach

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.

Internet Providers

Source: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026

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

May also be available: California Internet, T-Mobile USA, Verizon.

Based on FCC filings for 501 locations within half a mile of this property.

Drinking Water

Source: EPA Safe Drinking Water Information System, water system CA1910234, as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026

Water System	WALNUT VALLEY WATER DISTRICT serves 100,941 people
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 as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. The full violation and enforcement history is in the system's EPA record.