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

San Mateo County property record for 611 S Eldorado St, San Mateo, CA 94402

Property Summary

Property Type	Quadplex
Details	8 bd · 4 ba · 3,636 sqft · built 1964
Lot Size	0.139 acres (6,073 sqft)
Owner	2 Individual Names on Record
Last Sale	$2,125,000 (Apr 2022)
Tax Bill	$32,970 (2025)
Deeds & Mortgages	Apr 2022 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`033-291-230`

Property Details

APN / Parcel Number

Primary APN	`033-291-230`

Interior

Bedrooms	8 Beds
Full Baths	4 Baths
Total Rooms	18 Rooms
Units	4 Units
Stories	2 Stories
Building Area	3,636 sqft Living Area

Exterior

Year Built	Built 1964
Effective Year Built	Effective 1964
Architectural Style	Quadruplex
Lot Area	6,073 sqft (0.139 acres)
Lot Dimensions	151 ft deep x 40 ft wide
View / Lot	Easement
Parking Spaces	4 Parking Spaces

Location & Zoning

Street Address	611 S ELDORADO ST, S
City	SAN MATEO
State	CA
Zip	94402-1382
Property Category	Residential
Property Type	Residential > Multi-Unit > Quadplex
Legal Description	LOT 15 BLOCK 3 EAST SAN MATEO RSM 5/55 CITY OF SAN MATEO
Legal Subdivision	EAST SAN MATEO
Legal Block	3
Legal Lot Number	15
Jurisdiction	SAN MATEO CA
Township / Civil Division	SAN MATEO
Census Block Group	1
Census Block	1009
Census Tract	606300

Owner

Source: San Mateo County records, as of July 15, 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 Record
Mailing Address	1181 BALCLUTHA DR, FOSTER CITY, CA 94404-1747
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Apr 13, 2022 · Amount on Record
Deed Sale	Apr 13, 2022 · Amount on Record
Prior Sale	Jul 31, 1998 · Amount on Record
Deed Document Number	202231597
Record Updated	Oct 29, 2026

April 2022: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN MATEO CA
Recording Date	Apr 13, 2022
Property Address	611 S ELDORADO ST, SAN MATEO, CA 94402-1382
Document Number	0000031597
Map Reference	MB 5 PG 55
Instrument Date	Mar 31, 2022
Instrument	2022-031597
Transaction Type	Transfer
Record Updated	Oct 18, 2022
Title Company	NOT AVAILABLE, DOMA TITLE OF CALIFORNIA INC

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$12,962.50
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property with Right of Survivorship
Address	611 S ELDORADO ST, SAN MATEO, CA 94402-1382

Mortgage

Document Number	0000031598
Date	Apr 13, 2022
Instrument	2022-031598

Lender

Name	LUTHER BURBANK SAVINGS
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	May 1, 2052

Interest

Rate Type	Adjustable Rate
Rate	3.5%
Type Change Date	May 1, 2027
Change Frequency	Annually
Min Rate At Change	3.37%
Max Rate At Change	6.5%
Index	1-Year CMT
Max Rate	9.75%

Tax Assessment & Valuation

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		$2,300,166 (+2%) Land $1,244,796 Building $1,055,370
2025	$32,970.00 (+5.98%) Homeowner's exemption	$2,255,066 (+4.04%) Land $1,220,389 Building $1,034,677
2023	$31,111.00 (+43.48%) Homeowner's exemption	$2,167,500 Land $1,173,000 Building $994,500
2022	$21,683.00

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

Flood

Source: FEMA National Flood Hazard Layer, effective September 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

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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