504 Rockbridge Rd, Diamond Bar, CA 91765 Property Records

Los Angeles County property record for 504 Rockbridge Rd, Diamond Bar, CA 91765

Property Summary

Property Type	Single Family Home
Details	3 bd · 2 ba · 1,449 sqft · built 1975
Lot Size	0.192 acres (8,377 sqft)
Owner	2 Individual Names on Record
Last Sale	$860,000 (Oct 2023)
Tax Bill	$11,777 (2025)
Deeds & Mortgages	Sep 2022 Mortgage Oct 2023 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`8718-019-022`

Property Details

APN / Parcel Number

Primary APN	`8718-019-022`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Total Rooms	10 Rooms
Stories	1 Story
Building Area	1,449 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1975
Effective Year Built	Effective 1975
Architectural Style	Conventional
Exterior Material	Stucco
Construction Type	Wood
Roof Type	Gable
Roof Material	Wood Shingle
Lot Area	8,377 sqft (0.192 acres)
Lot Dimensions	100 ft deep x 74 ft wide
Garage Type	Attached

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central
Water Source	Commercial

Location & Zoning

Street Address	504 ROCKBRIDGE RD
City	DIAMOND BAR
State	CA
Zip	91765-1248
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	LCR18000*
Legal Description	TRACT NO 28065 LOT 54
Legal Subdivision	28065
Legal Tract	28065
Legal Block	1
Legal Lot Number	54
Jurisdiction	LOS ANGELES CA
Township / Civil Division	EAST SAN GABRIEL VALLEY
Census Block Group	1
Census Block	1021
Census Tract	403327

Owner

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

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Owner of Record	2 Individual Names on Record
Mailing Address	504 ROCKBRIDGE RD, DIAMOND BAR, CA 91765-1248
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

Deeds, Mortgages & Sale History

Date	Document
Sep 13, 2022	Deed of Trust, Mortgage · Conventional Mortgage UNITED WHOLESALE MORTGAGE
Oct 11, 2023	Grant Deed, Transfer · Conventional Mortgage ACG FUNDING INC

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Oct 11, 2023 · Amount on Record
Deed Sale	Oct 11, 2023 · Amount on Record
Prior Sale	Mar 11, 1997 · Amount on Record
Deed Document Number	2023691550
Prior Transfer Date	Jul 9, 1996
Prior Transfer Doc	0001139484
Record Updated	Oct 29, 2026

September 2022: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	LOS ANGELES CA
Property Address	504 ROCKBRIDGE RD, DIAMOND BAR, CA 91765-1248
Transaction Type	Mortgage
Record Updated	Sep 27, 2023
Title Company	CHICAGO TITLE COMPANY

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	504 ROCKBRIDGE RD, DIAMOND BAR, CA 91765-1248

Mortgage

Document Number	0000896566
Date	Sep 13, 2022
Instrument	22-0896566

Lender

Name	UNITED WHOLESALE MORTGAGE
Type	Mortgage Company
Address	PONTIAC, MI 48341

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Oct 1, 2052

October 2023: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	LOS ANGELES CA
Recording Date	Oct 11, 2023
Property Address	504 ROCKBRIDGE RD, DIAMOND BAR, CA 91765-1248
Document Number	0000691550
Map Reference	MB 839 PG 35&36
Instrument Date	Sep 22, 2023
Instrument	23-0691550
Transaction Type	Transfer
Record Updated	Oct 18, 2023
Title Company	FIRST AMERICAN TITLE

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	504 ROCKBRIDGE RD, DIAMOND BAR, CA 91765-1248

Mortgage

Document Number	0000691551
Date	Oct 11, 2023
Instrument	23-0691551

Lender

Name	ACG FUNDING INC
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Nov 1, 2053

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	Pomona Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$894,743 (+2%) Land $688,536 Building $206,207
2025	$11,777.00 (+227.5%)	$877,200 (+247.74%) Land $675,036 Building $202,164
2023	$3,596.00 (+1.67%) Homeowner's exemption	$252,254 Land $116,300 Building $135,954
2022	$3,537.00

Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.

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	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	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 216 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
Verizon Fixed Wireless	300 / 20
T-Mobile Fixed Wireless	100 / 20
AT&T Fixed Wireless	100 / 20

May also be available: GeoLinks.

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