343 E 40th Ave, San Mateo, CA 94403 Property Records

San Mateo County property record for 343 E 40th Ave, San Mateo, CA 94403 · Last verified August 2026

Property Summary

Property Type	Single Family Home
Details	3 bd · 2 ba · 1,470 sqft · built 1950
Lot Size	0.136 acres (5,901 sqft)
Owner	2 Individual Names on File
Last Sale	$465,000 (Jun 2001)
Tax Bill	$11,830 (2025)
Deeds & Mortgages	Nov 2021 Mortgage
Flood Zone	Zone X (reduced by levee)
APN	`040-203-210`

Property Details

APN / Parcel Number

Primary APN	`040-203-210`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Total Rooms	7 Rooms
Stories	1 Story
Building Area	1,470 sqft Living Area
1st Floor Area	860 sqft
Family Room	Family Room
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1950
Effective Year Built	Effective 1950
Architectural Style	Ranch
Exterior Material	Stucco
Roof Material	Composition Shingle
Lot Area	5,901 sqft (0.136 acres)
Lot Dimensions	100 ft deep x 54 ft wide
View / Lot	Corner
Garage Area	250 sqft
Parking Spaces	1 Parking Space

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	343 E 40TH AVE
City	SAN MATEO
State	CA
Zip	94403-3660
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT 20 BLOCK 21 SAN MATEO VILLAGE UNIT NO 3 RSM 30/12 13 CITY OF SAN MATEO
Legal Subdivision	SAN MATEO VILLAGE UNIT NO 3
Legal Block	21
Legal Lot Number	20
Jurisdiction	SAN MATEO CA
Township / Civil Division	SAN MATEO
Census Block Group	3
Census Block	3007
Census Tract	608501

Owner

Source: San Mateo County records · APN 040-203-210

Assessment roll updated July 15, 2026 · Last verified August 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 File
Mailing Address	343 E 40TH AVE, SAN MATEO, CA 94403-3660
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Community Property

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Sale	Jun 08, 2001 · Amount on Record
Deed Sale	Jun 08, 2001 · Amount on Record
Prior Sale	May 24, 1995 · Amount on Record
Deed Document Number	200184302
Last Transfer Date	Nov 08, 2021
Transfer Doc	0000159631
Record Updated	Sep 20, 2026

November 2021: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	SAN MATEO CA
Recording Date	Nov 17, 2021
Property Address	343 E 40TH AVE, SAN MATEO, CA 94403-3660
Document Number	0000159631
Map Reference	MB 30 PG 12&13
Instrument Date	Nov 08, 2021
Instrument	2021-159631
Transaction Type	Transfer
Record Updated	Jul 25, 2022
Title Company	FIRSTAMERICAN TITLE COMPANY, FIRST AMERICAN 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 with Right of Survivorship
Address	343 E 40TH AVE, SAN MATEO, CA 94403-3660

Mortgage

Document Number	0000159632
Date	Nov 17, 2021
Instrument	2021-159632

Lender

Name	PROVIDENT CU
Type	Credit Union

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Dec 01, 2051

Interest

Rate Type	Adjustable Rate
Rate	2.62%
Type Change Date	Dec 01, 2031
Change Frequency	Monthly
Min Rate At Change	2%
Max Rate At Change	5.62%
Index	3-Year TN
Margin	2
Max Rate	8.62%

Tax Assessment & Valuation

Source: San Mateo County records · Assessment roll updated July 15, 2026 · Last verified August 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

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

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$821,259 (+2%) Land $357,339 Building $463,920
2025	$11,830.00 (+4.48%) Homeowner's exemption	$805,158 (+4.04%) Land $350,333 Building $454,825
2023	$11,323.00 (+0.68%) Homeowner's exemption	$773,896 Land $336,730 Building $437,166	$762,660
2022	$11,247.00

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, San Mateo County (06081C), updated September 10, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 060816085013, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026

Flood

FEMA Flood Zone	Zone X
Special Flood Hazard Area	No
Flood Hazard	Reduced by levee depends on levee performance
500-Year Floodplain	No
Flood Insurance Cost	Premium on Record median of 13 individual NFIP policies nearby
Nearby Flood Policies	13 in force
Nearby Flood Claims	2 (1979–2010)
Claims Outside the SFHA	1 of 2
Most Recent Claim	Jan 2010, other causes

Wildfire

Wildfire Risk	Not rated no burnable land in reach
Wildfire Likelihood	Negligible
Exposure	None beyond ember reach

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.

Internet Providers

Source: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 734 locations within about half a mile of this property

Provider	Technology	Download / Upload (Mbps)
AT&T	Fiber	5,000 / 5,000
Xfinity	Cable	2,000 / 250
Radiate Holdings	Cable	1,500 / 50
Verizon	Fixed Wireless	300 / 20
Etheric Communications, LLC.	Fixed Wireless (licensed-by-rule)	250 / 100
T-Mobile USA	Fixed Wireless	100 / 20
Starlink	Satellite (low-earth orbit)	280 / 30

May also be available at this address: AT&T, Sonic Telecom, California Internet. Availability varies by address; speeds are provider-advertised maximums, not measured.