2621 Isabelle Ave, San Mateo, CA 94403 Property Records

San Mateo County property record for 2621 Isabelle Ave, San Mateo, CA 94403

Property Summary

Property Type	Single Family Home
Details	2 bd · 1.5 ba · 1,240 sqft · built 1938
Lot Size	0.117 acres (5,100 sqft)
Owner	2 Individual Names on Record
Last Sale	$590,000 (Mar 2012)
Tax Bill	$10,832 (2025)
Deeds & Mortgages	Jul 2021 Line of Credit Apr 2021 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`039-344-030`

Property Details

APN / Parcel Number

Primary APN	`039-344-030`

Interior

Bedrooms	2 Beds
Full Baths	1.5 Baths
Half Baths	1 Half Bath
Total Rooms	7 Rooms
Stories	1 Story
Building Area	1,240 sqft Living Area
Gross Area	1,790 sqft
1st Floor Area	1,240 sqft
Attic	Attic
Attic Area	90 sqft
Basement Area	460 sqft
Family Room	Family Room

Exterior

Year Built	Built 1938
Effective Year Built	Effective 1938
Lot Area	5,100 sqft (0.117 acres)
Lot Dimensions	127 ft deep x 40 ft wide
Garage Type	Basement
Garage Area	460 sqft
Parking Spaces	1 Parking Space

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	2621 ISABELLE AVE
City	SAN MATEO
State	CA
Zip	94403-2308
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R10006
Legal Description	LOT 3 BLOCK 2 RESUB OF BLOCKS 1 2 & 5 SAN MATEO TERRACE RSM 20/4 CITY OF SAN MATEO
Legal Subdivision	SAN MATEO TERRACE
Legal Block	2,1
Legal Lot Number	3
Jurisdiction	SAN MATEO CA
Township / Civil Division	SAN MATEO
Census Block Group	3
Census Block	3007
Census Tract	607400

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	2621 ISABELLE AVE, SAN MATEO, CA 94403-2308
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Community Property

Deeds, Mortgages & Sale History

Date	Document
Jul 14, 2021	Deed of Trust, Mortgage · Line of Credit MUFG UNION BANK NA
Apr 8, 2021	Deed of Trust, Mortgage · Conventional Mortgage MUFG UNION BANK NA

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Mar 23, 2012 · Amount on Record
Deed Sale	Mar 23, 2012 · Amount on Record
Deed Document Number	201239322
Prior Transfer Date	Mar 20, 2008
Prior Transfer Doc	0000030498
Record Updated	Sep 20, 2026

July 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Property Address	2621 ISABELLE AVE, SAN MATEO, CA 94403-2308
Transaction Type	Mortgage
Record Updated	Aug 4, 2021
Title Company	CHICAGO TITLE PIRT, CHICAGO TITLE PINT

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	2621 ISABELLE AVE, SAN MATEO, CA 94403-2308

Mortgage

Document Number	0000105192
Date	Jul 14, 2021
Instrument	2021-105192

Lender

Name	MUFG UNION BANK NA
Type	Bank
Address	SAN DIEGO, CA 92121

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	360 Months
Due	Jul 22, 2051

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

April 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Property Address	2621 ISABELLE AVE, SAN MATEO, CA 94403-2308
Transaction Type	Mortgage
Record Updated	May 12, 2021
Title Company	FIDELITY NATIONAL TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	2621 ISABELLE AVE, SAN MATEO, CA 94403-2308

Mortgage

Document Number	0000056224
Date	Apr 8, 2021
Instrument	2021-056224

Lender

Name	MUFG UNION BANK NA
Type	Bank
Address	SAN DIEGO, CA 92121

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Apr 1, 2051

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		$755,886 (+2%) Land $377,943 Building $377,943
2025	$10,832.00 (+7.27%) Homeowner's exemption	$741,066 (+4.04%) Land $370,533 Building $370,533
2023	$10,098.00 (+2.86%) Homeowner's exemption	$712,292 Land $356,146 Building $356,146	$1,513,620
2022	$9,817.00

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 Policies	1 in force
Nearby Flood Claims	4 (1978–1986)
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 799 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

May also be available: Etheric Networks, GeoLinks, T-Mobile, Verizon.

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