1136 Summitridge Dr, Diamond Bar, CA 91765 Property Records

Los Angeles County property record for 1136 Summitridge Dr, Diamond Bar, CA 91765

Property Summary

Property Type	Single Family Home
Details	4 bd · 3 ba · 3,082 sqft · built 1987
Lot Size	0.156 acres (6,799 sqft)
Owner	2 Trust Names on File
Tax Bill	$10,524 (2025)
Deeds & Mortgages	Jan 2022 Transfer
Flood Zone	Zone X (minimal risk)
APN	`8701-038-077`

Property Details

APN / Parcel Number

Primary APN	`8701-038-077`

Interior

Bedrooms	4 Beds
Full Baths	3 Baths
Building Area	3,082 sqft Living Area

Exterior

Year Built	Built 1987
Effective Year Built	Effective 1987
Construction Type	Wood
Lot Area	6,799 sqft (0.156 acres)

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	1136 SUMMITRIDGE DR
City	DIAMOND BAR
State	CA
Zip	91765-4362
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	LCRPD20000
Legal Description	TR=42570 LOT 18
Legal Subdivision	42570
Legal Tract	42570
Legal Block	2
Legal Lot Number	18
Jurisdiction	LOS ANGELES CA
Township / Civil Division	EAST SAN GABRIEL VALLEY
Census Block Group	2
Census Block	2009
Census Tract	403320

Owner

1136 Summitridge Dr is owner-occupied and held in a trust since December 2021.

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

Owner of Record	2 Trust Names on File
Mailing Address	1136 SUMMITRIDGE DR, DIAMOND BAR, CA 91765-4362
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust, Family Trust

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

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Transfer Date	Dec 18, 2021
Transfer Doc	0000017441
Record Updated	Oct 29, 2026

January 2022: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	LOS ANGELES CA
Recording Date	Jan 5, 2022
Property Address	1136 SUMMITRIDGE DR, DIAMOND BAR, CA 91765-4362
Document Number	0000017441
Map Reference	MB 1063 PG 61-71
Instrument Date	Dec 18, 2021
Instrument	22-0017441
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 Trust
Address	1136 SUMMITRIDGE DR, DIAMOND BAR, CA 91765-4362

Tax Assessment & Valuation

The 2025 property tax bill for 1136 Summitridge Dr was $10,524 with a homeowner's exemption.

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		$790,500 (+2%) Land $229,677 Building $560,823
2025	$10,524.00 Homeowner's exemption	$775,001 Land $225,174 Building $549,827
2023	$9,722.00 (+2.28%) Homeowner's exemption	$744,909 Land $216,431 Building $528,478
2022	$9,505.00

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

Flood

FEMA maps place 1136 Summitridge Dr in Zone X, an area of minimal flood risk.

Source: FEMA National Flood Hazard Layer, effective September 30, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026

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

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.

Wildfire

Wildfire risk around 1136 Summitridge Dr is moderate, ranking above 58% of the US, with a 0.2% annual chance of wildfire.

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

Wildfire Risk	Moderate above 58% of the US · lower than 65% of California
Wildfire Likelihood	0.2% annual chance
Exposure	Direct burnable vegetation

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 529 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
AT&T Fixed Wireless	100 / 20