1020 Summitridge Dr, Diamond Bar, CA 91765 Property Records

Los Angeles County property record for 1020 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	0.147 acres (6,385 sqft)
Owner	2 Individual Names on File
Last Sale	$780,000 (Jan 2013)
Tax Bill	$12,822 (2025)
Deeds & Mortgages	Feb 2018 Line of Credit
Flood Zone	Zone X (minimal risk)
APN	`8701-040-059`

Property Details

APN / Parcel Number

Primary APN	`8701-040-059`

Interior

Bedrooms	4 Beds
Full Baths	3 Baths
Total Rooms	8 Rooms
Stories	2 Stories
Building Area	3,225 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1987
Effective Year Built	Effective 1987
Architectural Style	Contemporary
Exterior Material	Stucco
Construction Type	Wood
Roof Material	Tile
Lot Area	6,385 sqft (0.147 acres)

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central
Sewer	Municipal
Water Source	Commercial

Location & Zoning

Street Address	1020 SUMMITRIDGE DR
City	DIAMOND BAR
State	CA
Zip	91765-4364
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	LCRPD20000
Legal Description	TR=42571 LOT 5
Legal Subdivision	42571
Legal Tract	42571
Legal Block	2
Legal Lot Number	5
Jurisdiction	LOS ANGELES CA
Township / Civil Division	EAST SAN GABRIEL VALLEY
Census Block Group	2
Census Block	2010
Census Tract	403320

Owner

1020 Summitridge Dr is owned and occupied by two individuals who bought it in January 2013.

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

Owner of Record	2 Individual Names on File
Mailing Address	1020 SUMMITRIDGE DR, DIAMOND BAR, CA 91765-4364
Occupancy	Owner Occupied
Owner Type	Individual

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 Sale	Jan 17, 2013 · Amount on File
Deed Sale	Jan 17, 2013 · Amount on File
Prior Sale	Sep 6, 2002 · Amount on File
Deed Document Number	201383901
Prior Transfer Date	Mar 13, 1995
Prior Transfer Doc	0001247457
Record Updated	Oct 29, 2026

February 2018: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	LOS ANGELES CA
Recording Date	Feb 6, 2018
Property Address	1020 SUMMITRIDGE DR, DIAMOND BAR, CA 91765-4364
Document Number	0000121253
Map Reference	MB 1063 PG 72-76
Instrument Date	Nov 9, 2017
Instrument	18-0121253
Transaction Type	Transfer
Record Updated	Jul 20, 2022
Title Company	OLD REPUBLIC TITLE

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property with Right of Survivorship
Address	1020 SUMMITRIDGE DR, DIAMOND BAR, CA 91765-4364

Mortgage

Document Number	0000121254
Date	Feb 6, 2018
Instrument	18-0121254

Lender

Name	EAST WEST BANK
Type	Bank
Address	EL MONTE, CA 91731

Agreement

Type	Line of Credit
Amount	Amount on Record
Term	359 Months
Due	Jan 24, 2048

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

Tax Assessment & Valuation

The 2025 property tax bill for 1020 Summitridge Dr was $12,822.

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		$979,709 (+2%) Land $398,036 Building $581,673
2025	$12,822.00	$960,500 Land $390,232 Building $570,268
2023	$11,869.00 (+2.23%)	$923,205 Land $375,080 Building $548,125
2022	$11,610.00

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

Flood

FEMA maps place 1020 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 1020 Summitridge Dr is moderate, ranking above 46% of the US, with a 0.09% annual chance of wildfire.

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

Wildfire Risk	Moderate above 46% of the US · lower than 72% of California
Wildfire Likelihood	0.09% 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 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