1220 Oates Dr, Diamond Bar, CA 91765 Property Records

Los Angeles County property record for 1220 Oates Dr, Diamond Bar, CA 91765

Property Summary

Property Type	Single Family Home
Details	4 bd · 2 ba · 1,771 sqft · built 1980
Lot Size	0.218 acres (9,491 sqft)
Owner	2 Individual Names on File
Last Sale	$222,000 (Mar 1999)
Tax Bill	$7,238 (2025)
Deeds & Mortgages	Mar 2022 Transfer Mar 2022 Transfer
Flood Zone	Zone X (minimal risk)
APN	`8701-031-004`

Property Details

APN / Parcel Number

Primary APN	`8701-031-004`

Interior

Bedrooms	4 Beds
Full Baths	2 Baths
Total Rooms	9 Rooms
Stories	1 Story
Building Area	1,771 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1980
Effective Year Built	Effective 1980
Architectural Style	Conventional
Exterior Material	Stucco
Construction Type	Wood
Roof Type	Gable
Roof Material	Wood Shingle
Lot Area	9,491 sqft (0.218 acres)
Lot Dimensions	140 ft deep x 67 ft wide

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	1220 OATES DR
City	DIAMOND BAR
State	CA
Zip	91765-2362
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	LCR18000*
Legal Description	*TR=35026 LOT 55
Legal Subdivision	35026
Legal Tract	35026
Legal Block	1
Legal Lot Number	55
Jurisdiction	LOS ANGELES CA
Township / Civil Division	EAST SAN GABRIEL VALLEY
Census Block Group	1
Census Block	1006
Census Tract	403320

Owner

1220 Oates Dr is owned and occupied by two individuals who acquired it in March 2022.

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 File
Mailing Address	721 CARR AVE, ROCKVILLE, MD 20850-2136
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Mar 25, 2022	Intrafamily Transfer, Transfer LAWYERS TITLE COMPANY
Mar 25, 2022	Intrafamily Transfer, Transfer LAWYERS TITLE

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Mar 31, 1999 · Amount on File
Deed Sale	Mar 31, 1999 · Amount on File
Deed Document Number	1999547984
Last Transfer Date	Mar 3, 2022
Transfer Doc	0000340735
Record Updated	Oct 29, 2026

March 2022: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	LOS ANGELES CA
Recording Date	Mar 25, 2022
Property Address	1220 OATES DR, DIAMOND BAR, CA 91765-2362
Document Number	0000340735
Map Reference	MB 919 PG 31-37
Instrument Date	Mar 3, 2022
Instrument	22-0340735
Transaction Type	Transfer
Record Updated	Jun 7, 2023
Title Company	LAWYERS TITLE COMPANY

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	Revocable Trust
Address	721 CARR AVE, ROCKVILLE, MD 20850-2136

March 2022: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	LOS ANGELES CA
Recording Date	Mar 25, 2022
Property Address	1220 OATES DR, DIAMOND BAR, CA 91765-2362
Document Number	0000340734
Map Reference	MB 919 PG 31-37
Instrument Date	Mar 3, 2022
Instrument	22-0340734
Transaction Type	Transfer
Record Updated	Apr 4, 2022
Title Company	LAWYERS TITLE

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
Address	721 CARR AVE, ROCKVILLE, MD 20850-2136

Tax Assessment & Valuation

The 2025 property tax bill for 1220 Oates Dr was $7,238 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		$566,921 (+1.99%) Land $353,722 Building $213,199
2025	$7,238.00 Homeowner's exemption	$555,833 Land $346,802 Building $209,031
2023	$6,747.00 (+2.13%) Homeowner's exemption	$534,251 Land $333,336 Building $200,915
2022	$6,606.00

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

Flood

FEMA maps place 1220 Oates Dr in Zone X, an area of minimal flood risk.

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

Wildfire risk around 1220 Oates Dr is moderate, ranking above 63% of the US, with a 0.1% annual chance of wildfire.

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

Wildfire Risk	Moderate above 63% of the US · lower than 61% of California
Wildfire Likelihood	0.1% 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 344 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Spectrum Cable	1,000 / 1,000

May also be available: AT&T, GeoLinks, T-Mobile, Verizon.

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