1137 Bain Ave, Diamond Bar (Walnut), CA 91789 Property Records

Los Angeles County property record for 1137 Bain Ave, Diamond Bar, CA 91789

Property Summary

Property Type	Single Family Home
Details	4 bd · 2 ba · 2,145 sqft · built 1965
Lot Size	0.184 acres (8,017 sqft)
Owner	2 Individual Names on Record
Last Sale	$488,000 (May 2018)
Tax Bill	$10,071 (2025)
Deeds & Mortgages	Jan 2023 Line of Credit Aug 2020 Mortgage + 1 more
Flood Zone	Zone X (minimal risk)
APN	`8763-005-015`

Property Details

APN / Parcel Number

Primary APN	`8763-005-015`

Interior

Bedrooms	4 Beds
Full Baths	2 Baths
Total Rooms	8 Rooms
Building Area	2,145 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1965
Effective Year Built	Effective 1967
Construction Type	Wood
Lot Area	8,017 sqft (0.184 acres)

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	1137 BAIN AVE
City	WALNUT
State	CA
Zip	91789-3903
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	LCR18000*
Legal Description	TRACT NO 27264 LOT 107
Legal Subdivision	27264
Legal Tract	27264
Legal Block	3
Legal Lot Number	107
Jurisdiction	LOS ANGELES CA
Township / Civil Division	EAST SAN GABRIEL VALLEY
Census Block Group	3
Census Block	3015
Census Tract	403328

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	1137 BAIN AVE, WALNUT, CA 91789-3903
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

Deeds, Mortgages & Sale History

Date	Document
Jan 20, 2023	Deed of Trust, Mortgage · Line of Credit ORANGE COUNTYS CU
Aug 19, 2020	Deed of Trust, Mortgage · Conventional Mortgage UNITED WHOLESALE MORTGAGE
May 24, 2018	Grant Deed, Transfer · Conventional Mortgage FIRST AMERICAN TITLE

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	May 24, 2018 · Amount on Record
Deed Sale	May 24, 2018 · Amount on Record
Prior Sale	Jun 16, 1998 · Amount on Record
Deed Document Number	2018518566
Prior Transfer Date	Aug 2, 1993
Prior Transfer Doc	0000097870
Record Updated	Oct 29, 2026

January 2023: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	LOS ANGELES CA
Property Address	1137 BAIN AVE, DIAMOND BAR, CA 91789-3903
Transaction Type	Mortgage
Record Updated	Jan 31, 2023
Title Company	CHICAGO TITLE PIRT

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	1137 BAIN AVE, WALNUT, CA 91789-3903

Mortgage

Document Number	0000042259
Date	Jan 20, 2023
Instrument	23-0042259

Lender

Name	ORANGE COUNTYS CU
Type	Credit Union
Address	SANTA ANA, CA 92705

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	300 Months
Due	Jan 27, 2048

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

August 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	LOS ANGELES CA
Property Address	1137 BAIN AVE, DIAMOND BAR, CA 91789-3903
Transaction Type	Mortgage
Record Updated	Jul 20, 2022
Title Company	WESTERN RESOURCES TITLE CO

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000965547
Date	Aug 19, 2020
Instrument	20-0965547

Lender

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

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Sep 1, 2050

May 2018: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	LOS ANGELES CA
Recording Date	May 24, 2018
Property Address	1137 BAIN AVE, DIAMOND BAR, CA 91789-3903
Document Number	0000518566
Map Reference	MB 722 PG 91-95
Instrument Date	May 3, 2018
Instrument	18-0518566
Transaction Type	Transfer
Record Updated	Feb 6, 2021
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	1137 BAIN AVE, DIAMOND BAR, CA 91789-3903

Mortgage

Document Number	0000518567
Date	May 24, 2018
Instrument	18-0518567

Lender

Type	Funding / Finance Company

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Jun 1, 2048

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		$799,637 (+2%) Land $464,232 Building $335,405
2025	$10,071.00 (+7.71%)	$783,959 (+4.04%) Land $455,130 Building $328,829
2023	$9,350.00 (+2.12%)	$753,518 Land $437,457 Building $316,061
2022	$9,156.00

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	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 286 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Frontier Fiber	7,000 / 7,000
Spectrum Cable · Fiber in parts of the area	1,000 / 1,000
Starlink Satellite	280 / 30
T-Mobile Fixed Wireless	100 / 20

May also be available: GeoLinks, Verizon.

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