404 31st Ave, San Mateo, CA 94403 Property Records

San Mateo County property record for 404 31st Ave, San Mateo, CA 94403

Property Summary

Property Type	Single Family Home
Details	3 bd · 2 ba · 1,900 sqft · built 1940
Lot Size	0.126 acres (5,500 sqft)
Owner	Individual Name on File
Last Sale	$1,500,000 (Dec 2018)
Tax Bill	$21,057 (2025)
Deeds & Mortgages	Jul 2020 Mortgage Dec 2018 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`039-311-130`

Property Details

APN / Parcel Number

Primary APN	`039-311-130`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Total Rooms	6 Rooms
Stories	1 Story
Building Area	1,900 sqft Living Area
1st Floor Area	1,280 sqft
Family Room	Family Room
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1940
Effective Year Built	Effective 1940
Architectural Style	Contemporary
Exterior Material	Stucco
Roof Material	Composition Shingle
Lot Area	5,500 sqft (0.126 acres)
Lot Dimensions	110 ft deep x 50 ft wide
Garage Area	350 sqft
Parking Spaces	1 Parking Space

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	404 31ST AVE
City	SAN MATEO
State	CA
Zip	94403-3313
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R10006
Legal Description	LOT 18 BLOCK 14 SAN MATEO TERRACE MAP NO 5 RSM 22/35 CITY OFSAN MATEO
Legal Subdivision	SAN MATEO TERRACE MAP NO 5
Legal Block	14
Legal Lot Number	18
Jurisdiction	SAN MATEO CA
Township / Civil Division	SAN MATEO
Census Block Group	2
Census Block	2015
Census Tract	607300

Owner

404 31st Ave is owned and occupied by an individual who bought it in December 2018.

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

Owner of Record	Individual Name on File
Mailing Address	404 31ST AVE, SAN MATEO, CA 94403-3313
Occupancy	Owner Occupied
Owner Type	Individual

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
Jul 18, 2020	Deed of Trust, Mortgage · Conventional Mortgage SAN MATEO CU
Dec 6, 2018	Grant Deed, Transfer · Conventional Mortgage SAN MATEO CU

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Dec 6, 2018 · Amount on File
Deed Sale	Dec 6, 2018 · Amount on File
Prior Sale	Apr 26, 1994 · Amount on File
Deed Document Number	201895336
Prior Transfer Date	Mar 3, 1994
Prior Transfer Doc	0000058865
Record Updated	Oct 29, 2026

July 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Property Address	404 31ST AVE, SAN MATEO, CA 94403-3313
Document Number	0000071016
Instrument Date	Jul 18, 2020
Transaction Type	Mortgage
Record Updated	Aug 17, 2020
Title Company	FIDELITY NATIONAL TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	404 31ST AVE SAN MATEO CA 944033313, SAN MATEO, CA 94403-3313

Mortgage

Document Number	0000071016
Date	Jul 23, 2020
Instrument	71016

Lender

Name	SAN MATEO CU
Type	Credit Union
Address	REDWOOD CITY, CA 94063

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	360 Months
Due	Jul 22, 2050

December 2018: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN MATEO CA
Recording Date	Dec 6, 2018
Property Address	404 31ST AVE, SAN MATEO, CA 94403-3313
Document Number	0000095336
Instrument Date	Dec 4, 2018
Instrument	95336
Transaction Type	Transfer
Record Updated	Dec 21, 2018
Title Company	OLD REPUBLIC TITLE

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$1,650.00
Amount Accuracy	Full Value
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	404 31ST AVE SAN MATEO CA 944033313, SAN MATEO, CA 94403-3313

Mortgage

Document Number	95337
Date	Dec 6, 2018
Instrument	95337

Lender

Name	SAN MATEO CU
Type	Credit Union
Address	REDWOOD CITY, CA 94063

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	360 Months
Due	Dec 5, 2048

Interest

Rate Type	Adjustable Rate
Rate	3.75%

Mortgage

Document Number	95338,
Date	Dec 6, 2018
Instrument	95338

Lender

Name	MISCELLANEOUS GOVT AGCY
Address	264 HARBOR BLVD # A, BELMONT, CA 94002-4017

Agreement

Amount	Amount on Record
Term	360 Months
Due	Dec 5, 2048

Tax Assessment & Valuation

The 2025 property tax bill for 404 31st Ave was $21,057 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		$1,706,739 (+2%) Land $1,365,392 Building $341,347
2025	$21,057.00 Homeowner's exemption	$1,673,274 Land $1,338,620 Building $334,654
2023	$20,096.00 (-1.21%) Homeowner's exemption	$1,608,301 Land $1,286,641 Building $321,660	$2,087,010
2022	$20,343.00

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

Flood

FEMA maps place 404 31st 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 404 31st 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.

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