1011 Summitridge Dr, Diamond Bar, CA 91765 Property Records

Los Angeles County property record for 1011 Summitridge Dr, Diamond Bar, CA 91765

Property Summary

Property Type	Single Family Home
Details	4 bd · 3 ba · 3,225 sqft · built 1987
Lot Size	0.597 acres (26,012 sqft)
Owner	2 Individual Names on Record
Last Sale	$585,000 (Dec 2002)
Tax Bill	$11,607 (2025)
Flood Zone	Zone X (minimal risk)
APN	`8701-039-033`

Property Details

APN / Parcel Number

Primary APN	`8701-039-033`

Interior

Bedrooms	4 Beds
Full Baths	3 Baths
Building Area	3,225 sqft Living Area

Exterior

Year Built	Built 1987
Effective Year Built	Effective 1987
Construction Type	Wood
Lot Area	26,012 sqft (0.597 acres)

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	1011 SUMMITRIDGE DR
City	DIAMOND BAR
State	CA
Zip	91765-4365
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	LCRPD20000
Legal Description	TR=42571 LOT 50
Legal Subdivision	42571
Legal Tract	42571
Legal Block	1
Legal Lot Number	50
Jurisdiction	LOS ANGELES CA
Township / Civil Division	EAST SAN GABRIEL VALLEY
Census Block Group	1
Census Block	1006
Census Tract	403320

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 Individual Names on Record
Mailing Address	1011 SUMMITRIDGE DR, DIAMOND BAR, CA 91765-4365
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Dec 18, 2002 · Amount on Record
Deed Sale	Dec 18, 2002 · Amount on Record
Deed Document Number	20023104640
Prior Transfer Date	Sep 20, 1996
Prior Transfer Doc	0001968292
Record Updated	Oct 29, 2026

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		$864,202 (+2%) Land $369,316 Building $494,886
2025	$11,607.00 (+8.38%)	$847,258 (+4.04%) Land $362,075 Building $485,183
2023	$10,710.00 (+2.23%)	$814,360 Land $348,016 Building $466,344
2022	$10,476.00

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	Moderate above 62% of the US · lower than 62% of California
Wildfire Likelihood	0.2% 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	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 414 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Spectrum Cable	1,000 / 1,000
Verizon Fixed Wireless	300 / 20
T-Mobile Fixed Wireless	100 / 20