600 9th Ave, San Mateo, CA 94402 Property Records

San Mateo County property record for 600 9th Ave, San Mateo, CA 94402

Property Summary

Property Type	Duplex
Details	6 bd · 4 ba · 4,110 sqft · built 1975
Lot Size	0.217 acres (9,429 sqft)
Owner	Company Name on Record
Last Sale	$2,500,000 (Dec 2021)
Tax Bill	$32,643 (2025)
Deeds & Mortgages	Dec 2021 Sale Dec 2020 Mortgage + 2 more
Flood Zone	Zone X (minimal risk)
APN	`033-313-010`

Property Details

APN / Parcel Number

Primary APN	`033-313-010`

Interior

Bedrooms	6 Beds
Full Baths	4 Baths
Total Rooms	12 Rooms
Units	2 Units
Stories	2 Stories
Building Area	4,110 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1975
Effective Year Built	Effective 1975
Architectural Style	Duplex Single
Lot Area	9,429 sqft (0.217 acres)
Lot Dimensions	132 ft deep x 71 ft wide
View / Lot	Corner
Parking Spaces	4 Parking Spaces

Location & Zoning

Street Address	600 9TH AVE
City	SAN MATEO
State	CA
Zip	94402-1428
Property Category	Residential
Property Type	Residential > Multi-Unit > Duplex
Local Zoning Code	R20000
Legal Description	LOTS 5 6 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	5
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 are on file and can be viewed instantly on this page with a free 10-day trial.

Owner of Record	Company Name on Record
Mailing Address	1170 TRINITY DR, MENLO PARK, CA 94025-6647
Owner Type	Company

Deeds, Mortgages & Sale History

Date	Document
Dec 8, 2021	Grant Deed, Transfer FIRSTAMERICAN TITLE COMPANY, FIRST AMERICAN TITLE COMPANY
Dec 16, 2020	Deed of Trust, Mortgage · Conventional Mortgage FIRST REPUBLIC BANK
Jun 6, 2019	Grant Deed, Transfer FIRST AMERICAN TITLE
Jun 6, 2019	Affidavit of Death, Transfer FIRST AMERICAN TITLE

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Dec 8, 2021 · Amount on Record
Deed Sale	Dec 8, 2021 · Amount on Record
Prior Sale	Jun 6, 2019 · Amount on Record
Deed Document Number	2021167581
Prior Transfer Date	Nov 3, 2003
Prior Transfer Doc	0000045600
Record Updated	Oct 29, 2026

December 2021: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN MATEO CA
Recording Date	Dec 8, 2021
Property Address	600 9TH AVE, SAN MATEO, CA 94402-1428
Document Number	0000167581
Map Reference	MB 6 PG 36
Instrument Date	Dec 2, 2021
Instrument	2021-167581
Transaction Type	Transfer
Record Updated	Dec 28, 2021
Title Company	FIRSTAMERICAN TITLE COMPANY, FIRST AMERICAN TITLE COMPANY

Transaction

Amount	Amount Recorded
Tax	$15,250.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	1170 TRINITY DR, MENLO PARK, CA 94025-6647

December 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Property Address	600 9TH AVE, SAN MATEO, CA 94402-1428
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	OLD REPUBLIC TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	624 DORCHESTER RD, SAN MATEO, CA 94402-1024

Mortgage

Document Number	0000146447
Date	Dec 16, 2020
Instrument	2020-146447

Lender

Name	FIRST REPUBLIC BANK
Type	Bank
Address	SAN FRANCISCO, CA 94111

Agreement

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

Interest

Rate Type	Adjustable Rate
Rate	2.85%
Type Change Date	Jan 1, 2031
Change Frequency	Annually
Min Rate At Change	2.95%
Max Rate At Change	10.9%
Index	1-Year CMT
Max Rate	10.9%

June 2019: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN MATEO CA
Recording Date	Jun 6, 2019
Property Address	600 9TH AVE, SAN MATEO, CA 94402-1428
Document Number	0000043171
Instrument Date	Jun 3, 2019
Instrument	43171
Transaction Type	Transfer
Record Updated	Jun 28, 2019
Title Company	FIRST AMERICAN TITLE

Transaction

Amount	Amount Recorded
Tax	$2,035.00
Amount Accuracy	Full Value
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	624 DORCHESTER RD SAN MATEO CA 944021024, SAN MATEO, CA 94402-1024

June 2019: Affidavit of Death, Transfer

Document Type	Affidavit of Death
Jurisdiction	SAN MATEO CA
Recording Date	Jun 6, 2019
Property Address	600 9TH AVE, SAN MATEO, CA 94402-1428
Document Number	0000043170
Instrument Date	Jun 3, 2019
Instrument	43170
Transaction Type	Transfer
Record Updated	Jun 28, 2019
Title Company	FIRST AMERICAN TITLE

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	600 9TH AVE SAN MATEO CA 944021428, SAN MATEO, CA 94402-1428

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		$2,706,079 (+2%) Land $1,396,337 Building $1,309,742
2025	$32,643.00 (+1.71%)	$2,653,019 (+4.04%) Land $1,368,958 Building $1,284,061
2024	$32,095.00 (+1.31%)
2023	$31,679.00 (+0.25%)	$2,550,000 Land $1,315,800 Building $1,234,200
2022	$31,599.00

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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