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1010 S B St, San Mateo, CA 94401 Property Records

San Mateo County property record for 1010 S B St, San Mateo, CA 94401

Property Summary

Property TypeDuplex
Details4 bd · 3 ba · 2,764 sqft · built 1958
Lot Size0.149 acres (6,500 sqft)
Owner2 Individual Names on File
Last Sale$330,000 (Oct 1995)
Tax Bill$14,442 (2025)
Deeds & MortgagesNov 2022 Mortgage
Oct 2025 Mortgage
+ 2 more
Flood ZoneZone X (minimal risk)
APN034-282-320

Property Details

APN / Parcel Number

Primary APN034-282-320

Interior

Bedrooms4 Beds
Full Baths3 Baths
Total Rooms9 Rooms
Units2 Units
Stories1 Story
Building Area2,764 sqft Living Area
1st Floor Area2,764 sqft
Fireplaces1 Fireplace
FireplaceFireplace

Exterior

Year BuiltBuilt 1958
Effective Year BuiltEffective 1958
Architectural StyleDuplex Single
Roof MaterialComposition Shingle
Lot Area6,500 sqft (0.149 acres)
Lot Dimensions130 ft deep x 50 ft wide
Parking Spaces2 Parking Spaces

Utilities, Heating & Cooling

Heating SystemCentral

Location & Zoning

Street Address1010 S B ST
CitySAN MATEO
StateCA
Zip94401-4313
Property CategoryResidential
Property TypeResidential > Multi-Unit > Duplex
Local Zoning CodeR20000
Legal DescriptionLOT 17 BLOCK N SUB NO 3 & RESUB BLKS G & H OF SUB NO 2 HAYWARD PARK RSM 5/36
Legal SubdivisionHAYWARD PARK
Legal BlockN,G,H
Legal Lot Number17
JurisdictionSAN MATEO CA
Township / Civil DivisionSAN MATEO
Census Block Group1
Census Block1003
Census Tract606600

Owner

Source: San Mateo County assessment roll, as of July 15, 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record2 Individual Names on File
Mailing Address1010 S B ST, SAN MATEO, CA 94401-4313
OccupancyOwner Occupied
Owner TypeIndividual
VestingJoint Tenants

Deeds, Mortgages & Sale History

DateDocument
Nov 10, 2022Deed of Trust, Mortgage · Commercial Mortgage
BAYMARK FINANCIAL INC
Oct 15, 2025Intrafamily Transfer, Transfer · Conventional Mortgage
CAPITAL ALLIANCE LLC
Mar 3, 2023Intrafamily Transfer, Transfer
Dec 27, 2022Grant Deed, Transfer

Assessor's Deed Record

Deed Names2 Verified Names on Deed
Last SaleOct 2, 1995 · Amount on Record
Deed SaleOct 2, 1995 · Amount on Record
Deed Document Number1995104095
Last Transfer DateFeb 27, 2023
Transfer Doc0000009738
Record UpdatedSep 20, 2026

November 2022: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionSAN MATEO CA
Property Address1010 S B ST, SAN MATEO, CA 94401-4313
Transaction TypeMortgage
Record UpdatedNov 12, 2025
Title CompanyCHICAGO TITLE COMPANY

Transferred To (Grantee/Buyer)

NameVerified Name
Address1010-1 S B ST 12, 12, SAN MATEO, CA 94401-4313

Mortgage

Document Number0000078469
DateNov 10, 2022
Instrument2022-078469
Lender
NameBAYMARK FINANCIAL INC
AddressSAN MATEO, CA 94402
Agreement
TypeCommercial Mortgage
AmountAmount Recorded

October 2025: Intrafamily Transfer, Transfer

Document TypeIntrafamily Transfer
JurisdictionSAN MATEO CA
Recording DateOct 15, 2025
Property Address1010 S B ST, SAN MATEO, CA 94401-4313
Document Number0000054549
Map ReferenceMB 5 PG 36
Instrument DateOct 9, 2025
Instrument2025-054549
Transaction TypeTransfer
Record UpdatedNov 12, 2025
Title CompanyTWFG NATIONAL TITLE INSURANCE COMPANY, WFG NATIONAL TITLE INS CO

Transaction

Tax$0.00
Amount AccuracyTransfer Tax Exempt
Additional
  • Intrafamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipJoint Tenants
Address1010 S B ST # 1012, 1012, SAN MATEO, CA 94401-4313

Mortgage

Document Number0000054550
DateOct 15, 2025
Instrument2025-054550
Lender
NameCAPITAL ALLIANCE LLC
TypeNon-Lending Institution
Agreement
TypeConventional Mortgage
AmountAmount Recorded
Term361 Months
DueNov 1, 2055

March 2023: Intrafamily Transfer, Transfer

Document TypeIntrafamily Transfer
JurisdictionSAN MATEO CA
Recording DateMar 3, 2023
Property Address1010 S B ST, SAN MATEO, CA 94401-4313
Document Number0000009738
Map ReferenceMB 5 PG 36
Instrument DateFeb 27, 2023
Instrument2023-009738
Transaction TypeTransfer
Record UpdatedJun 7, 2023

Transaction

Tax$0.00
Amount AccuracyTransfer Tax Exempt
Additional
  • Intrafamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipRevocable Trust
AddressPO BOX 393, SAN MATEO, CA 94401-0393

December 2022: Grant Deed, Transfer

Document TypeGrant Deed
JurisdictionSAN MATEO CA
Recording DateDec 27, 2022
Property Address1010 S B ST, SAN MATEO, CA 94401-4313
Document Number0000088062
Map ReferenceMB 5 PG 36
Instrument DateDec 16, 2022
Instrument2022-088062
Transaction TypeTransfer
Record UpdatedJan 17, 2023

Transaction

Tax$0.00
Amount AccuracyTransfer Tax Exempt
Additional
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipTenants in Common
Address1010 S B ST # 1012, 1012, SAN MATEO, CA 94401-4313

Tax Assessment & Valuation

Source: San Mateo County assessment roll, as of July 15, 2026

Property Jurisdictions

TypeName
StateCalifornia
CountySan Mateo County
MunicipalitySan Mateo City
Elementary School DistrictSan Mateo-Foster City Elementary School District (KG - 08)
Secondary School DistrictSan Mateo Union High School District (09 - 12)

Tax Bill & Assessment History

YearTax BillAssessed Value
2026$1,006,585 (+2%) Land $602,881 Building $403,704
2025$14,442.00 (+0.46%) Homeowner's exemption$986,851 (-44.71%) Land $591,061 Building $395,790
2024$14,376.00 (+6.99%)
2023$13,437.00 (+62.93%)$1,785,000 Land $1,326,000 Building $459,000
2022$8,247.00

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 ZoneZone X
minimal risk
Flood Insurance RequirementNot required
lenders may require it
Nearby Flood Policies3 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 RiskNot rated
no burnable land within ember reach

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water SystemCALIFORNIA WATER SERVICE - SAN MATEO
private · serves 103,536 people · EPA ID CA4110008
Water SourcePurchased surface water from SAN FRANCISCO REGIONAL WATER SYSTEM
Last State InspectionMar 2025
Lead4 ppb (2023–2025)
action level 15 ppb

Violations Reported to EPA

Water QualityNone
last 10 years
Treatment and ProcedureNone
last 10 years
Monitoring and ReportingNone
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

ProviderMax Down / Up (Mbps)
AT&T
Fiber · Fixed Wireless, DSL in parts of the area		5,000 / 5,000
Xfinity
Cable		2,000 / 250
Radiate Holdings
Cable		1,500 / 50
Sonic Telecom
Fiber		1,000 / 1,000
Unwired
Fixed Wireless		300 / 25
Verizon
Fixed Wireless		300 / 20
Etheric Communications, LLC.
Fixed Wireless		250 / 100
T-Mobile USA
Fixed Wireless		100 / 20

May also be available: California Internet.

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