337 Sylvan Ave, San Mateo, CA 94403 Property Records

San Mateo County property record for 337 Sylvan Ave, San Mateo, CA 94403

Property Summary

Property Type	Single Family Home
Details	4 bd · 4 ba · 1,920 sqft · built 1950
Lot Size	0.136 acres (5,940 sqft)
Owner	2 Individual Names on File
Last Sale	$1,600,000 (Jan 2015)
Tax Bill	$24,139 (2025)
Deeds & Mortgages	Jun 2021 Line of Credit Aug 2020 Transfer + 2 more
Flood Zone	Zone X (minimal risk)
APN	`039-312-040`

Property Details

APN / Parcel Number

Primary APN	`039-312-040`

Interior

Bedrooms	4 Beds
Full Baths	4 Baths
Total Rooms	8 Rooms
Stories	1 Story
Building Area	1,920 sqft Living Area
1st Floor Area	1,480 sqft
Family Room	Family Room

Exterior

Year Built	Built 1950
Effective Year Built	Effective 1950
Lot Area	5,940 sqft (0.136 acres)
Lot Dimensions	110 ft deep x 54 ft wide
Garage Area	280 sqft
Parking Spaces	1 Parking Space

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	337 SYLVAN AVE
City	SAN MATEO
State	CA
Zip	94403-3331
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R10006
Legal Description	LOT 15 SYLVAN TRACT RSM 29/47 CITY OF SAN MATEO
Legal Subdivision	SYLVAN TRACT
Legal Lot Number	15
Jurisdiction	SAN MATEO CA
Township / Civil Division	SAN MATEO
Census Block Group	2
Census Block	2011
Census Tract	607300

Owner

337 Sylvan Ave is owned and occupied by two individuals who acquired it in June 2020.

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

Owner of Record	2 Individual Names on File
Mailing Address	337 SYLVAN AVE, SAN MATEO, CA 94403-3331
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Community Property

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
Jun 7, 2021	Deed of Trust, Mortgage · Line of Credit GREAT LAKES CU
Aug 20, 2020	Intrafamily Transfer, Transfer PACIFIC COAST TITLE COMPANY
Jun 23, 2020	Quit Claim Deed, Transfer NOT AVAILABLE
Nov 9, 2019	Deed of Trust, Mortgage · Line of Credit QUICKEN LNS

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jan 15, 2015 · Amount on File
Deed Sale	Jan 15, 2015 · Amount on File
Prior Sale	Aug 15, 2014 · Amount on File
Deed Document Number	20153558
Last Transfer Date	Jun 4, 2020
Transfer Doc	0000083545
Record Updated	Oct 29, 2026

June 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Property Address	337 SYLVAN AVE, SAN MATEO, CA 94403-3331
Transaction Type	Mortgage
Record Updated	Oct 18, 2022

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	337 SYLVAN AVE, SAN MATEO, CA 94403-3331

Mortgage

Document Number	0000087704
Date	Jun 7, 2021
Instrument	2021-087704

Lender

Name	GREAT LAKES CU
Type	Credit Union
Address	NORTH CHICAGO, IL 60064

Agreement

Type	Line of Credit
Amount	Amount on Record
Term	360 Months
Due	Jun 6, 2051

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

August 2020: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	SAN MATEO CA
Recording Date	Aug 20, 2020
Property Address	337 SYLVAN AVE, SAN MATEO, CA 94403-3331
Document Number	0000083545
Map Reference	MB 29 PG 47
Instrument Date	Jun 4, 2020
Instrument	2020-083545
Transaction Type	Transfer
Record Updated	Oct 18, 2022
Title Company	PACIFIC COAST TITLE COMPANY

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
Relationship	Community Property
Address	337 SYLVAN AVE, SAN MATEO, CA 94403-3331

June 2020: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	SAN MATEO CA
Recording Date	Jun 23, 2020
Property Address	337 SYLVAN AVE, SAN MATEO, CA 94403-3331
Document Number	0000058809
Instrument Date	Jun 4, 2020
Instrument	58809
Transaction Type	Transfer
Record Updated	Jul 16, 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	Revocable Trust
Address	337 SYLVAN AVE SAN MATEO CA 944033331, SAN MATEO, CA 94403-3331

November 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Property Address	337 SYLVAN AVE, SAN MATEO, CA 94403-3331
Document Number	0000099434
Instrument Date	Nov 9, 2019
Transaction Type	Mortgage
Record Updated	Dec 12, 2019
Title Company	NOT AVAILABLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Husband and Wife
Address	337 SYLVAN AVE SAN MATEO CA 944033331, SAN MATEO, CA 94403-3331

Mortgage

Document Number	0000099434
Date	Nov 25, 2019
Instrument	99434

Lender

Name	QUICKEN LNS
Type	Funding / Finance Company
Address	DETROIT, MI 48226-1906

Agreement

Type	Line of Credit
Amount	Amount on Record
Term	360 Months
Due	Nov 24, 2049

Interest

Rate Type	Adjustable Rate

Tax Assessment & Valuation

The 2025 property tax bill for 337 Sylvan Ave was $24,139 with a homeowner's exemption.

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		$1,961,410 (+2%) Land $980,705 Building $980,705
2025	$24,139.00 Homeowner's exemption	$1,922,952 Land $961,476 Building $961,476
2023	$23,300.00 (+1.73%) Homeowner's exemption	$1,848,284 Land $924,142 Building $924,142	$2,313,450
2022	$22,904.00

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

Flood

FEMA maps place 337 Sylvan Ave in Zone X, an area of minimal flood risk, though there have been 4 flood claims nearby since 1998.

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	2 in force
Nearby Flood Claims	4 (1998–2022)
Claims Outside the SFHA	4 of 4
Most Recent Claim	Dec 2022 · rainfall accumulation

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 337 Sylvan Ave 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 716 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

May also be available: Etheric Networks, GeoLinks, T-Mobile.

Nearby Properties on Sylvan Ave

Nearby Streets

Search Property Records by Address or Parcel Number

Search by:

By searching, you agree to: Terms • Privacy • Disclosures