181 42nd Ave, San Mateo, CA 94403 Property Records

San Mateo County property record for 181 42nd Ave, San Mateo, CA 94403

Property Summary

Property Type	Single Family Home
Details	3 bd · 2.5 ba · 1,900 sqft · built 1948
Lot Size	0.178 acres (7,769 sqft)
Owner	2 Individual Names on Record
Last Sale	$1,860,000 (May 2019)
Tax Bill	$26,112 (2025)
Deeds & Mortgages	Nov 2021 Mortgage May 2019 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`042-254-030`

Property Details

APN / Parcel Number

Primary APN	`042-254-030`

Interior

Bedrooms	3 Beds
Full Baths	2.5 Baths
Half Baths	1 Half Bath
Total Rooms	7 Rooms
Stories	1 Story
Building Area	1,900 sqft Living Area
1st Floor Area	1,900 sqft
Family Room	Family Room
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1948
Effective Year Built	Effective 1948
Architectural Style	Ranch
Exterior Material	Wood
Construction Type	Wood
Roof Material	Composition Shingle
Lot Area	7,769 sqft (0.178 acres)
Lot Dimensions	100 ft deep x 69 ft wide
View / Lot	Corner
Garage Area	420 sqft
Parking Spaces	2 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	181 42ND AVE
City	SAN MATEO
State	CA
Zip	94403-5164
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R10006
Legal Description	LOT 9 BLOCK 23 SAN MATEO KNOLLS MAP NO 2 RSM 24/61 62 CITY OF SAN MATEO
Legal Subdivision	SAN MATEO KNOLLS MAP NO 2
Legal Block	23
Legal Lot Number	9
Jurisdiction	SAN MATEO CA
Township / Civil Division	SAN MATEO
Census Block Group	2
Census Block	2027
Census Tract	607200

Owner

Source: San Mateo County records, 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 Record	2 Individual Names on Record
Mailing Address	181 42ND AVE, SAN MATEO, CA 94403-5164
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Nov 29, 2021	Deed of Trust, Mortgage · Conventional Mortgage BANK OF AMERICA NA
May 31, 2019	Grant Deed, Transfer BANK OF AMERICA

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	May 31, 2019 · Amount on Record
Deed Sale	May 31, 2019 · Amount on Record
Deed Document Number	201941291
Record Updated	Oct 29, 2026

November 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Property Address	181 42ND AVE, SAN MATEO, CA 94403-5164
Transaction Type	Mortgage
Record Updated	Aug 5, 2022
Title Company	RAVENSWOOD TITLE COMPANY LLC

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	181 42ND AVE, SAN MATEO, CA 94403-5164

Mortgage

Document Number	0000163249
Date	Nov 29, 2021
Instrument	2021-163249

Lender

Name	BANK OF AMERICA NA
Type	Bank
Address	CHARLOTTE, NC 28255

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Dec 1, 2051

May 2019: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN MATEO CA
Recording Date	May 31, 2019
Property Address	181 42ND AVE, SAN MATEO, CA 94403-5164
Document Number	0000041291
Instrument Date	May 29, 2019
Instrument	41291
Transaction Type	Transfer
Record Updated	Jun 21, 2019
Title Company	OLD REPUBLIC TITLE

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$2,046.00
Amount Accuracy	Full Value
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants with Right of Survivorship
Address	181 42ND AVE SAN MATEO CA 944035164, SAN MATEO, CA 94403-5164

Mortgage

Document Number	41292
Date	May 31, 2019
Instrument	41292

Lender

Name	BANK OF AMERICA
Type	Bank
Address	101 S TRYON ST, CHARLOTTE, NC 28280-0002

Agreement

Amount	Amount Recorded
Term	360 Months
Due	May 30, 2049

Interest

Rate Type	Adjustable Rate
Rate	2.75%

Tax Assessment & Valuation

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		$2,116,356 (+2%) Land $1,479,175 Building $637,181
2025	$26,112.00 (+6.15%) Homeowner's exemption	$2,074,860 (+4.04%) Land $1,450,172 Building $624,688
2023	$24,599.00 (+2.04%) Homeowner's exemption	$1,994,293 Land $1,393,861 Building $600,432	$2,609,640
2022	$24,107.00

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

Flood

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 Claims	1 (1986)
Claims Outside the SFHA	1 of 1
Most Recent Claim	Feb 1986 · Severe Storms & Flooding

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 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 785 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	1,500 / 50
Verizon Fixed Wireless	300 / 20
Etheric Networks Fixed Wireless	250 / 100

May also be available: GeoLinks, T-Mobile.

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