501 S Eldorado St, San Mateo, CA 94402 Property Records

San Mateo County property record for 501 S Eldorado St, San Mateo, CA 94402

Property Summary

Property Type	Duplex
Details	4 bd · 2 ba · 2,090 sqft · built 1955
Lot Size	0.093 acres (4,042 sqft)
Owner	2 Trust Names on File
Last Sale	$850,000 (Apr 2008)
Tax Bill	$20,742 (2025)
Deeds & Mortgages	Jan 2023 Transfer Nov 2017 Mortgage + 1 more
Flood Zone	Zone X (minimal risk)
APN	`033-291-010`

Property Details

APN / Parcel Number

Primary APN	`033-291-010`

Interior

Bedrooms	4 Beds
Full Baths	2 Baths
Total Rooms	8 Rooms
Units	2 Units
Stories	1 Story
Building Area	2,090 sqft Living Area
1st Floor Area	2,090 sqft

Exterior

Year Built	Built 1955
Effective Year Built	Effective 1955
Architectural Style	Duplex Single
Lot Area	4,042 sqft (0.093 acres)
Lot Dimensions	127 ft deep x 32 ft wide
View / Lot	Corner
Parking Spaces	2 Parking Spaces

Location & Zoning

Street Address	501 S ELDORADO ST
City	SAN MATEO
State	CA
Zip	94402-1327
Property Category	Residential
Property Type	Residential > Multi-Unit > Duplex
Local Zoning Code	RM0000
Legal Description	LOT 8 BLOCK 3 EAST SAN MATEO RSM 5/55 CITY OF SAN
Legal Subdivision	EAST SAN MATEO
Legal Block	3
Legal Lot Number	8
Jurisdiction	SAN MATEO CA
Township / Civil Division	SAN MATEO
Census Block Group	1
Census Block	1009
Census Tract	606300

Owner

501 S Eldorado St, a duplex, is held in a trust since December 2022.

Source: San Mateo County records, as of July 15, 2026

Owner of Record	2 Trust Names on File
Mailing Address	PO BOX 329, BURLINGAME, CA 94011-0329
Owner Type	Company
Vesting	Trust

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

Date	Document
Jan 11, 2023	Intrafamily Transfer, Transfer
Nov 3, 2017	Deed of Trust, Mortgage · Conventional Mortgage AMERICAN PACIFIC MORTGAGE
Dec 26, 2018	Quit Claim Deed, Transfer NOT AVAILABLE

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Apr 4, 2008 · Amount on File
Deed Sale	Apr 4, 2008 · Amount on File
Prior Sale	Jun 7, 2005 · Amount on File
Deed Document Number	200837101
Last Transfer Date	Dec 30, 2022
Transfer Doc	0000001163
Record Updated	Sep 20, 2026

January 2023: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	SAN MATEO CA
Recording Date	Jan 11, 2023
Property Address	501 S ELDORADO ST, SAN MATEO, CA 94402-1327
Document Number	0000001163
Map Reference	MB 5 PG 55
Instrument Date	Dec 30, 2022
Instrument	2023-001163
Transaction Type	Transfer
Record Updated	Jun 7, 2023

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	PO BOX 329, BURLINGAME, CA 94011-0329

November 2017: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Property Address	501 S ELDORADO ST, SAN MATEO, CA 94402-1327
Transaction Type	Mortgage
Record Updated	Oct 18, 2022
Title Company	OLD REPUBLIC TITLE COMPANY

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000097704
Date	Nov 3, 2017
Instrument	2017-097704

Lender

Name	AMERICAN PACIFIC MORTGAGE
Type	Mortgage Company
Address	ROSEVILLE, CA 95661

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	360 Months
Due	Nov 1, 2047

December 2018: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	SAN MATEO CA
Recording Date	Dec 26, 2018
Property Address	501 S ELDORADO ST, SAN MATEO, CA 94402-1327
Document Number	0000100454
Instrument Date	Nov 29, 2018
Instrument	100454
Transaction Type	Transfer
Record Updated	Jan 13, 2020
Title Company	NOT AVAILABLE

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Personal Trust
Address	1763 HEKPA DR SOUTH LAKE TAHOE CA 961504700, SOUTH LAKE TAHOE, CA 96150-4700

Tax Assessment & Valuation

The 2025 property tax bill for 501 S Eldorado St was $20,742.

Source: San Mateo County assessment roll, as of July 15, 2026

Property Jurisdictions

Type	Name
State	California
County	San Mateo County
Municipality	San Mateo City
Elementary School District	San Mateo-Foster City Elementary School District (KG - 08)
Secondary School District	San Mateo Union High School District (09 - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$1,589,873 (+2%) Land $1,081,997 Building $507,876
2025	$20,742.00	$1,558,700 Land $1,060,782 Building $497,918
2023	$20,024.00 (+1.77%)	$1,498,176 Land $1,019,592 Building $478,584
2022	$19,676.00

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

Flood

FEMA maps place 501 S Eldorado St in Zone X, an area of minimal flood risk.

Source: FEMA National Flood Hazard Layer, effective September 10, 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	5 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

The area around 501 S Eldorado St has no burnable land within ember reach, so its wildfire risk is not rated.

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	CALIFORNIA WATER SERVICE - SAN MATEO private · serves 103,536 people · EPA ID CA4110008
Water Source	Purchased surface water from SAN FRANCISCO REGIONAL WATER SYSTEM
Last State Inspection	Mar 2025
Lead	4 ppb (2023–2025) 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 915 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
AT&T Fiber · Fixed Wireless, DSL in parts of the area	5,000 / 5,000
Xfinity Cable	2,000 / 250
Astound Broadband Cable	1,500 / 50
Sonic Telecom Fiber	1,000 / 1,000
Unwired Fixed Wireless	300 / 25
Verizon Fixed Wireless	300 / 20
Etheric Networks Fixed Wireless	250 / 100
T-Mobile Fixed Wireless	100 / 20

May also be available: GeoLinks.

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