604 9th Ave, San Mateo, CA 94402 Property Records

San Mateo County property record for 604 9th Ave, San Mateo, CA 94402

Property Summary

Property Type	Single Family Home
Details	3 bd · 1 ba · 1,280 sqft · built 1912
Lot Size	0.122 acres (5,312 sqft)
Owner	2 Individual Names on Record
Last Sale	$655,000 (Jul 2013)
Tax Bill	$13,037 (2025)
Deeds & Mortgages	Feb 2021 Mortgage Mar 2019 Line of Credit
Flood Zone	Zone X (minimal risk)
APN	`033-313-020`

Property Details

APN / Parcel Number

Primary APN	`033-313-020`

Interior

Bedrooms	3 Beds
Full Baths	1 Bath
Total Rooms	7 Rooms
Building Area	1,280 sqft Living Area
1st Floor Area	1,100 sqft
Family Room	Family Room

Exterior

Year Built	Built 1912
Effective Year Built	Effective 1912
Lot Area	5,312 sqft (0.122 acres)
Lot Dimensions	132 ft deep x 40 ft wide
Garage Area	280 sqft
Parking Spaces	1 Parking Space

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	604 9TH AVE
City	SAN MATEO
State	CA
Zip	94402-1428
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R20000
Legal Description	LOT 4 BLOCK 18 RESUB OF BLOCKS 5 TO 10 16 TO 31 EAST SAN MATEO RSM 6/36 CITY OF SAN MATEO
Legal Subdivision	EAST SAN MATEO
Legal Block	18,5-
Legal Lot Number	4
Jurisdiction	SAN MATEO CA
Township / Civil Division	SAN MATEO
Census Block Group	1
Census Block	1029
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	604 9TH AVE, SAN MATEO, CA 94402-1428
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Feb 25, 2021	Deed of Trust, Mortgage · Conventional Mortgage UNITED WHOLESALE MORTGAGE
Mar 27, 2019	Deed of Trust, Mortgage · Line of Credit US BANK NA

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jul 17, 2013 · Amount on Record
Deed Sale	Jul 17, 2013 · Amount on Record
Deed Document Number	2013104862
Prior Transfer Date	Apr 6, 2009
Prior Transfer Doc	0000061141
Record Updated	Oct 29, 2026

February 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Property Address	604 9TH AVE, SAN MATEO, CA 94402-1428
Transaction Type	Mortgage
Record Updated	Mar 22, 2021
Title Company	NORTH AMERICAN TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	604 9TH AVE, SAN MATEO, CA 94402-1428

Mortgage

Document Number	0000031783
Date	Feb 25, 2021
Instrument	2021-031783

Lender

Name	UNITED WHOLESALE MORTGAGE
Type	Mortgage Company
Address	PONTIAC, MI 48341

Agreement

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

March 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Property Address	604 9TH AVE, SAN MATEO, CA 94402-1428
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	SERVICELINK

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000021538
Date	Mar 27, 2019
Instrument	2019-021538

Lender

Name	US BANK NA
Type	Bank
Address	CINCINNATI, OH 45202

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	360 Months
Due	Mar 1, 2049

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

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		$954,646 (+1.71%) Land $409,493 Building $545,153
2025	$13,037.00 (+9.06%)	$938,588 (+21.62%) Land $401,464 Building $537,124
2023	$11,954.00 (+5.56%)	$771,752 Land $385,876 Building $385,876	$1,331,190
2022	$11,324.00

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	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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