1100 Irwin St, Belmont, CA 94002 Property Records

San Mateo County property record for 1100 Irwin St, Belmont, CA 94002

Property Summary

Property Type	Single Family Home
Details	3 bd · 1 ba · 1,190 sqft · built 1947
Lot Size	0.115 acres (5,001 sqft)
Owner	2 Individual Names on File
Last Sale	$1,710,000 (Nov 2022)
Tax Bill	$21,810 (2025)
Deeds & Mortgages	Nov 2022 Sale & Mortgage Oct 2021 Mortgage + 1 more
Flood Zone	Zone X (moderate risk)
APN	`040-341-080`

Property Details

APN / Parcel Number

Primary APN	`040-341-080`

Interior

Bedrooms	3 Beds
Full Baths	1 Bath
Total Rooms	6 Rooms
Stories	1 Story
Building Area	1,190 sqft Living Area
1st Floor Area	1,190 sqft
Family Room	Family Room

Exterior

Year Built	Built 1947
Effective Year Built	Effective 1947
Lot Area	5,001 sqft (0.115 acres)
Lot Dimensions	92 ft deep x 54 ft wide
Garage Area	250 sqft
Parking Spaces	1 Parking Space

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	1100 IRWIN ST
City	BELMONT
State	CA
Zip	94002-2837
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R10006
Legal Description	LOT 8 BLOCK 4 HOMEVIEW MAP NO 1 RSM 25/56 57 CITY OF BELMONT
Legal Subdivision	HOMEVIEW MAP NO 1
Legal Block	4
Legal Lot Number	8
Jurisdiction	SAN MATEO CA
Township / Civil Division	SAN MATEO
Census Block Group	2
Census Block	2021
Census Tract	608600

Owner

1100 Irwin St is owned and occupied by two individuals who bought it in November 2022.

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

Owner of Record	2 Individual Names on File
Mailing Address	1100 IRWIN ST, BELMONT, CA 94002-2837
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Community Property

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
Nov 21, 2022	Grant Deed, Transfer · Conventional Mortgage PNC BANK NA
Oct 27, 2021	Deed of Trust, Mortgage · Conventional Mortgage AMERICAN PACIFIC MORTGAGE CORP
Sep 24, 2019	Deed of Trust, Mortgage · Conventional Mortgage AMERICAN PACIFIC MORTGAGE CORP

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Nov 21, 2022 · Amount on File
Deed Sale	Nov 21, 2022 · Amount on File
Prior Sale	Dec 22, 2004 · Amount on File
Deed Document Number	202280031
Prior Transfer Date	Jan 8, 2002
Prior Transfer Doc	0000004132
Record Updated	Oct 29, 2026

November 2022: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN MATEO CA
Recording Date	Nov 21, 2022
Property Address	1100 IRWIN ST, BELMONT, CA 94002-2837
Document Number	0000080031
Map Reference	MB 25 PG 56&57
Instrument Date	Oct 31, 2022
Instrument	2022-080031
Transaction Type	Transfer
Record Updated	Dec 22, 2022
Title Company	CORNERSTONE TITLE COMPANY

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$1,881.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property with Right of Survivorship
Address	1100 IRWIN ST, BELMONT, CA 94002-2837

Mortgage

Document Number	0000080032
Date	Nov 21, 2022
Instrument	2022-080032

Lender

Name	PNC BANK NA
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Dec 1, 2052

Interest

Rate Type	Adjustable Rate
Rate	5.37%
Type Change Date	Dec 1, 2029
Change Frequency	6 Months
Min Rate At Change	3%
Max Rate At Change	10.3%
Index	Other
Margin	3
Max Rate	10.3%

October 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Property Address	1100 IRWIN ST, BELMONT, CA 94002-2837
Transaction Type	Mortgage
Record Updated	Nov 22, 2021
Title Company	OLD REPUBLIC TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	1100 IRWIN ST, BELMONT, CA 94002-2837

Mortgage

Document Number	0000150898
Date	Oct 27, 2021
Instrument	2021-150898

Lender

Name	AMERICAN PACIFIC MORTGAGE CORP
Type	Mortgage Company
Address	ROSEVILLE, CA 95661

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Nov 1, 2051

September 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Property Address	1100 IRWIN ST, BELMONT, CA 94002-2837
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	OLD REPUBLIC TITLE COMPANY

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000078195
Date	Sep 24, 2019
Instrument	2019-078195

Lender

Name	AMERICAN PACIFIC MORTGAGE CORP
Type	Mortgage Company
Address	ROSEVILLE, CA 95661

Agreement

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

Tax Assessment & Valuation

The 2025 property tax bill for 1100 Irwin St was $21,810 with a homeowner's exemption.

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

Property Jurisdictions

Type	Name
State	California
Municipality	Belmont City
County	San Mateo County
Elementary School District	Belmont-Redwood Shores Elementary School District (KG - 08)
Secondary School District	Sequoia Union High School District (09 - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$1,814,664 (+2%) Land $1,432,630 Building $382,034
2025	$21,810.00 Homeowner's exemption	$1,779,084 Land $1,404,540 Building $374,544
2023	$21,036.00 (+76.02%) Homeowner's exemption	$1,710,000 Land $1,350,000 Building $360,000	$1,482,570
2022	$11,951.00

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

Flood

FEMA maps place 1100 Irwin St in Zone X, an area of moderate 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 moderate risk
500-Year Floodplain	Yes 0.2% annual chance
Flood Insurance Requirement	Not required lenders may require it
Flood Insurance Cost	Premium on File median of 10 policies
Nearby Flood Policies	10 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 1100 Irwin 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	MID-PENINSULA WATER DISTRICT serves 31,059 people · EPA ID CA4110001
Water Source	Purchased surface water from several systems
Last State Inspection	Feb 2025
Lead	Under 1 ppb (2022–2024) 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 512 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 · Fiber in parts of the area	2,000 / 250
Etheric Networks Fixed Wireless	250 / 100
T-Mobile Fixed Wireless	100 / 20

May also be available: Astound Broadband, GeoLinks, Sonic Telecom, Verizon.

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