4004 Marshall Ave, San Mateo, CA 94403 Property Records

San Mateo County property record for 4004 Marshall Ave, San Mateo, CA 94403

Property Summary

Property Type	Single Family Home
Details	2 bd · 1 ba · 1,320 sqft · built 1951
Lot Size	0.126 acres (5,481 sqft)
Owner	2 Individual Names on Record
Last Sale	$920,000 (Aug 2013)
Tax Bill	$14,189 (2025)
Deeds & Mortgages	Jun 2021 Mortgage Sep 2019 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`042-094-080`

Property Details

APN / Parcel Number

Primary APN	`042-094-080`

Interior

Bedrooms	2 Beds
Full Baths	1 Bath
Total Rooms	6 Rooms
Stories	1 Story
Building Area	1,320 sqft Living Area
Gross Area	1,740 sqft
1st Floor Area	900 sqft
Basement Area	420 sqft
Family Room	Family Room
Study	Study

Exterior

Year Built	Built 1951
Effective Year Built	Effective 1951
Lot Area	5,481 sqft (0.126 acres)
Lot Dimensions	80 ft deep x 69 ft wide
Garage Type	Basement
Garage Area	420 sqft
Parking Spaces	2 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	4004 MARSHALL AVE
City	SAN MATEO
State	CA
Zip	94403-4125
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R10006
Legal Description	LOT 8 BLOCK 40 SAN MATEO KNOLLS MAP NO 4 RSM 31/28 29 30 CITY OF SAN MATEO
Legal Subdivision	SAN MATEO KNOLLS MAP NO 4
Legal Block	40
Legal Lot Number	8
Jurisdiction	SAN MATEO CA
Township / Civil Division	SAN MATEO
Census Block Group	3
Census Block	3016
Census Tract	607100

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	4004 MARSHALL AVE, SAN MATEO, CA 94403-4125
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Jun 21, 2021	Deed of Trust, Mortgage · Conventional Mortgage SOFI LENDING CORP
Sep 9, 2019	Deed of Trust, Mortgage · Conventional Mortgage UNISON AGREEMENT CORP

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Aug 30, 2013 · Amount on Record
Deed Sale	Aug 30, 2013 · Amount on Record
Deed Document Number	2013127492
Last Transfer Date	Sep 15, 2016
Transfer Doc	0000095154
Record Updated	Oct 29, 2026

June 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Property Address	4004 MARSHALL AVE, SAN MATEO, CA 94403-4125
Transaction Type	Mortgage
Record Updated	Jul 12, 2021
Title Company	SERVICELINK

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	4004 MARSHALL AVE, SAN MATEO, CA 94403-4125

Mortgage

Document Number	0000093749
Date	Jun 21, 2021
Instrument	2021-093749

Lender

Name	SOFI LENDING CORP
Type	Lending Institution
Address	SALT LAKE CITY, UT 84121

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Jul 1, 2051

September 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Property Address	4004 MARSHALL AVE, SAN MATEO, CA 94403-4125
Document Number	0000079546
Instrument Date	Sep 9, 2019
Transaction Type	Mortgage
Record Updated	Oct 14, 2019
Title Company	VANTAGE PT TITLE INC

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	4004 MARSHALL AVE SAN MATEO CA 944034125, SAN MATEO, CA 94403-4125

Mortgage

Document Number	0000079546
Date	Sep 26, 2019
Instrument	79546

Lender

Name	UNISON AGREEMENT CORP
Address	SAN FRANCISCO, CA 94108

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded

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	Assessed Market Value
2026		$1,170,332 (+3.77%) Land $575,166 Building $595,166
2025	$14,189.00 (+1.54%) Homeowner's exemption	$1,127,772 (+4.04%) Land $563,886 Building $563,886
2023	$13,974.00 (+3.24%) Homeowner's exemption	$1,083,984 Land $541,992 Building $541,992	$1,239,750
2022	$13,535.00

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

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	1 in force
Nearby Flood Claims	1 (2006)
Claims Outside the SFHA	1 of 1
Most Recent Claim	Jan 2006 · Severe Storms, Flooding, Mudslides, And Landslides

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	Low lower than 97% of the US · lower than 97.8% of California
Wildfire Likelihood	Under 0.01% annual chance
Exposure	None beyond 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 572 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Sonic Telecom Fiber	10,000 / 10,000
AT&T Fiber · Fixed Wireless, DSL in parts of the area	5,000 / 5,000
Xfinity Cable	2,000 / 250
Astound Broadband Cable · Fiber in parts of the area	1,500 / 50
Verizon Fixed Wireless	300 / 20
Etheric Networks Fixed Wireless	250 / 100

May also be available: T-Mobile.

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