20814 E Boulder Ln, Diamond Bar (Walnut), CA 91789 Property Records

Los Angeles County property record for 20814 E Boulder Ln, Diamond Bar, CA 91789

Property Summary

Property Type	Single Family Home
Details	3 bd · 3 ba · 1,546 sqft · built 1987
Lot Size	0.116 acres (5,070 sqft)
Owner	2 Individual Names on File
Last Sale	$1,060,000 (Oct 2024)
Tax Bill	$13,736 (2025)
Deeds & Mortgages	Jul 2026 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`8765-019-053`

Property Details

APN / Parcel Number

Primary APN	`8765-019-053`

Interior

Bedrooms	3 Beds
Full Baths	3 Baths
Building Area	1,546 sqft Living Area

Exterior

Year Built	Built 1987
Effective Year Built	Effective 1987
Construction Type	Wood
Lot Area	5,070 sqft (0.116 acres)

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	20814 E BOULDER LN
City	WALNUT
State	CA
Zip	91789-4056
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	LCRPD10000
Legal Description	TR=43760 LOT 91
Legal Subdivision	43760
Legal Tract	43760
Legal Block	1
Legal Lot Number	91
Jurisdiction	LOS ANGELES CA
Township / Civil Division	EAST SAN GABRIEL VALLEY
Census Block Group	1
Census Block	1001
Census Tract	403305

Owner

Source: Los Angeles County records · APN 8765-019-053

Assessment roll updated May 21, 2026 · Last verified July 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 File
Mailing Address	20814 E BOULDER LN, WALNUT, CA 91789-4056
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Sale	Oct 02, 2024 · Amount on Record
Deed Sale	Oct 02, 2024 · Amount on Record
Prior Sale	Oct 24, 2013 · Amount on Record
Deed Document Number	2024672689
Prior Transfer Date	Oct 25, 2006
Prior Transfer Doc	0002425196
Record Updated	Sep 20, 2026

July 2026: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	LOS ANGELES CA
Recording Date	Jul 28, 2026
Property Address	20814 E BOULDER LN, WALNUT, CA 91789-4056
Document Number	0000553529
Instrument Date	Jul 17, 2026
Instrument	2026553529
Transaction Type	Transfer
Record Updated	Aug 05, 2026
Title Company	CALIFORNIA BEST TITLE CO, CALIFORNIA BEST TITLE

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on File
Loan-to-Value (LTV)	LTV on Record
Tax	$122,210.00
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	20814 E BOULDER LN, WALNUT, CA 91789-4056

Mortgage

Document Number	0000553530,
Date	Jul 28, 2026
Instrument	2026553530

Lender

Name	MORTGAGE MORTGAGE

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Aug 01, 2056

Interest

Rate Type	Adjustable Rate
Rate	6.75%
Initial Type	Adjustable Rate
Adjustable	Adjustable Rate Rider
Max Rate	-1%

Tax Assessment & Valuation

Source: Los Angeles County records · Assessment roll updated May 21, 2026 · Last verified July 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

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

Year	Tax Bill	Assessed Value
2025	$13,736.00 (+51.54%)	$1,060,000 (+53.78%) Land $809,000 Building $251,000
2023	$9,064.00 (+2.19%)	$689,275 Land $476,721 Building $212,554
2022	$8,870.00

Flood & Wildfire

Source: FEMA National Flood Hazard Layer as of September 30, 2026 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 2026

Flood

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it

Wildfire

Wildfire Risk	Low lower than 67% of the US · lower than 81% of California
Wildfire Likelihood	0.02% annual chance
Exposure	None beyond ember reach

Values are read at the parcel center point; lenders make the official flood determination.

Internet Providers

Source: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026

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

May also be available: California Internet, Frontier, T-Mobile USA, Verizon.

Based on FCC filings for 327 locations within half a mile of this property.

Drinking Water

Source: EPA Safe Drinking Water Information System as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026

Water System	WALNUT VALLEY WATER DISTRICT serves 100,941 people
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 as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. The full violation and enforcement history is in the system's EPA record.