257 Mountain Crest Rd, Duarte, CA 91010 Property Records

Los Angeles County property record for 257 Mountain Crest Rd, Duarte, CA 91010

Property Summary

Property Type	Single Family Home
Details	4 bd · 2 ba · 1,564 sqft · built 1965
Lot Size	0.175 acres (7,640 sqft)
Owner	2 Company Names on Record
Tax Bill	$3,405 (2025)
Deeds & Mortgages	Mar 2024 Transfer
Flood Zone	Zone X (minimal risk)
APN	`8610-011-019`

Property Details

APN / Parcel Number

Primary APN	`8610-011-019`

Interior

Bedrooms	4 Beds
Full Baths	2 Baths
Building Area	1,564 sqft Living Area

Exterior

Year Built	Built 1965
Effective Year Built	Effective 1965
Construction Type	Wood
Lot Area	7,640 sqft (0.175 acres)

Utilities, Heating & Cooling

Heating System	Central

Location & Zoning

Street Address	257 MOUNTAIN CREST RD
City	DUARTE
State	CA
Zip	91010-1537
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	DUR17500*
Legal Description	TRACT NO 27147 LOT 8
Legal Subdivision	27147
Legal Tract	27147
Legal Block	3
Legal Lot Number	8
Jurisdiction	LOS ANGELES CA
Township / Civil Division	UPPER SAN GABRIEL VALLEY
Census Block Group	3
Census Block	3000
Census Tract	430003

Owner

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

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	2 Company Names on Record
Mailing Address	257 MOUNTAIN CREST RD, DUARTE, CA 91010-1537
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust, Family Trust

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Transfer Date	Mar 20, 2024
Transfer Doc	0000195279
Record Updated	Oct 29, 2026

March 2024: Affidavit of Death of Trustee, Transfer

Document Type	Affidavit of Death of Trustee
Jurisdiction	LOS ANGELES CA
Recording Date	Mar 27, 2024
Property Address	257 MOUNTAIN CREST RD, DUARTE, CA 91010-1537
Document Number	0000195279
Map Reference	MB 693 PG 3&4
Instrument Date	Mar 19, 2024
Instrument	24-0195279
Transaction Type	Transfer
Record Updated	Apr 15, 2024

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	257 MOUNTAIN CREST RD, DUARTE, CA 91010-1537

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	Duarte City
Unified School District	Duarte Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$95,702 (+2%) Land $26,467 Building $69,235
2025	$3,405.00 (+11.97%) Homeowner's exemption	$93,827 (+4.04%) Land $25,949 Building $67,878
2023	$3,041.00 (+1.23%) Homeowner's exemption	$90,187 Land $24,943 Building $65,244
2022	$3,004.00

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	Moderate above 62% of the US · lower than 62% of California
Wildfire Likelihood	0.2% annual chance
Exposure	Indirect within ember reach
Adjoins Burnable Land	Yes

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	CAL-AM WATER COMPANY - DUARTE private · serves 24,767 people · EPA ID CA1910186
Water Source	Groundwater
Last State Inspection	Feb 2025
Lead	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 432 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Frontier Fiber	5,000 / 5,000
Spectrum Cable	1,000 / 50
Verizon Fixed Wireless	300 / 20
T-Mobile Fixed Wireless	100 / 20