971 S B St, San Mateo, CA 94401 Property Records

San Mateo County property record for 971 S B St, San Mateo, CA 94401

Property Summary

Property Type	Duplex
Details	4 bd · 2 ba · 2,358 sqft · built 1945
Lot Size	0.17 acres (7,400 sqft)
Owner	2 Trust Names on File
Last Sale	$1,534,545 (Dec 2018)
Tax Bill	$23,034 (2025)
Deeds & Mortgages	Dec 2018 Sale & Mortgage Apr 2017 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`034-271-140`

Property Details

APN / Parcel Number

Primary APN	`034-271-140`

Interior

Bedrooms	4 Beds
Full Baths	2 Baths
Total Rooms	10 Rooms
Units	2 Units
Stories	1 Story
Building Area	2,358 sqft Living Area
1st Floor Area	2,358 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1945
Effective Year Built	Effective 1945
Architectural Style	Duplex Single
Lot Area	7,400 sqft (0.17 acres)
Lot Dimensions	148 ft deep x 50 ft wide
Garage Type	Detached
Parking Spaces	2 Parking Spaces

Location & Zoning

Street Address	971 S B ST
City	SAN MATEO
State	CA
Zip	94401-4207
Property Category	Residential
Property Type	Residential > Multi-Unit > Duplex
Local Zoning Code	R20000
Legal Description	LOT 4 GLAZENWOOD NO 2 RSM 24/44 CITY OF SAN MATEO
Legal Subdivision	GLAZENWOOD NO 2
Legal Lot Number	4
Jurisdiction	SAN MATEO CA
Township / Civil Division	SAN MATEO
Census Block Group	3
Census Block	3000
Census Tract	606400

Owner

971 S B St, a duplex, is held in a trust since December 2018.

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

Owner of Record	2 Trust Names on File
Mailing Address	232 VIRGINIA AVE, SAN MATEO, CA 94402-1612
Owner Type	Company
Vesting	Trust

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
Dec 12, 2018	Grant Deed, Transfer · Conventional Mortgage FLAGSTAR BANK FSB
Apr 11, 2017	Grant Deed, Transfer PROVIDENT CU

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Dec 12, 2018 · Amount on File
Deed Sale	Dec 12, 2018 · Amount on File
Prior Sale	Apr 11, 2017 · Amount on File
Deed Document Number	201896645
Record Updated	Oct 29, 2026

December 2018: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN MATEO CA
Recording Date	Dec 12, 2018
Property Address	971 S B ST, SAN MATEO, CA 94401-4207
Document Number	0000096645
Map Reference	MB24 PG44
Instrument Date	Dec 10, 2018
Instrument	2018-096645
Transaction Type	Transfer
Record Updated	Aug 9, 2021
Title Company	NORTH AMERICAN TITLE CO

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name
Address	00000

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Family Trust
Address	971 S B ST, SAN MATEO, CA 94401-4207

Mortgage

Document Number	0000096646
Date	Dec 12, 2018
Instrument	2018-096646

Lender

Name	FLAGSTAR BANK FSB
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Jan 1, 2049

April 2017: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN MATEO CA
Recording Date	Apr 11, 2017
Property Address	971 S B ST, SAN MATEO, CA 94401-4207
Document Number	0000031228
Instrument Date	Apr 3, 2017
Instrument	31228
Transaction Type	Transfer
Record Updated	May 2, 2017
Title Company	FIRST AMERICAN TITLE

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$1,532.00
Amount Accuracy	Full Value
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property
Address	161 BARROILHET AVE SAN MATEO CA 944013704, SAN MATEO, CA 94401-3704

Mortgage

Document Number	31229
Date	Apr 11, 2017
Instrument	31229

Lender

Name	PROVIDENT CU
Type	Credit Union
Address	303 TWIN DOLPHIN DR, REDWOOD CITY, CA 94065-1497

Agreement

Amount	Amount on Record
Term	360 Months
Due	Apr 10, 2047

Tax Assessment & Valuation

The 2025 property tax bill for 971 S B St was $23,034.

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		$1,746,563 (+2%) Land $1,137,827 Building $608,736
2025	$23,034.00	$1,712,317 Land $1,115,517 Building $596,800
2023	$22,622.00 (-1.55%)	$1,645,828 Land $1,072,201 Building $573,627
2022	$22,978.00

Assessed value is set for property tax purposes and is not a market price estimate.

Flood

FEMA maps place 971 S B St in Zone X, an area of minimal flood risk.

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	1 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

The area around 971 S B St 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 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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