412 30th Ave, San Mateo, CA 94403 Property Records

San Mateo County property record for 412 30th Ave, San Mateo, CA 94403

Property Summary

Property Type	Single Family Home
Details	3 bd · 1 ba · 1,290 sqft · built 1941
Lot Size	0.116 acres (5,034 sqft)
Owner	Individual Name on Record
Last Sale	$1,560,000 (Aug 2021)
Tax Bill	$20,641 (2025)
Deeds & Mortgages	Aug 2021 Sale & Mortgage Oct 2020 Transfer + 1 more
Flood Zone	Zone X (minimal risk)
APN	`039-315-110`

Property Details

APN / Parcel Number

Primary APN	`039-315-110`

Interior

Bedrooms	3 Beds
Full Baths	1 Bath
Total Rooms	6 Rooms
Stories	1 Story
Building Area	1,290 sqft Living Area
1st Floor Area	1,290 sqft
Family Room	Family Room

Exterior

Year Built	Built 1941
Effective Year Built	Effective 1941
Lot Area	5,034 sqft (0.116 acres)
Lot Dimensions	81 ft deep x 61 ft wide
Garage Area	410 sqft
Parking Spaces	2 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	412 30TH AVE
City	SAN MATEO
State	CA
Zip	94403-2719
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R10006
Legal Description	LOT 12 BLOCK 20 SAN MATEO TERRACE MAP NO 6 RSM 23/36 CITY OFSAN MATEO
Legal Subdivision	SAN MATEO TERRACE MAP NO 6
Legal Block	20
Legal Lot Number	12
Jurisdiction	SAN MATEO CA
Township / Civil Division	SAN MATEO
Census Block Group	2
Census Block	2017
Census Tract	607300

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	Individual Name on Record
Mailing Address	412 30TH AVE, SAN MATEO, CA 94403-2719
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Aug 11, 2021	Grant Deed, Transfer · Conventional Mortgage GUARANTEED RATE INC
Oct 19, 2020	Affidavit of Death, Transfer ATTORNEY ONLY
Oct 19, 2020	Quit Claim Deed, Transfer ATTORNEY ONLY

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Aug 11, 2021 · Amount on Record
Deed Sale	Aug 11, 2021 · Amount on Record
Deed Document Number	2021117640
Record Updated	Sep 20, 2026

August 2021: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN MATEO CA
Recording Date	Aug 11, 2021
Property Address	412 30TH AVE, SAN MATEO, CA 94403-2719
Document Number	0000117640
Map Reference	MB 23 PG 36
Instrument Date	Aug 10, 2021
Instrument	2021-117640
Transaction Type	Transfer
Record Updated	Oct 18, 2022
Title Company	FIDELITY NATIONAL TITLE, FIDELITY NATIONAL TITLE CO

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$9,516.00
Amount Accuracy	Calculated from Transfer Tax
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	412 30TH AVE, SAN MATEO, CA 94403-2719

Mortgage

Document Number	0000117641
Date	Aug 11, 2021
Instrument	2021-117641

Lender

Name	GUARANTEED RATE INC
Type	Mortgage Company

Agreement

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

October 2020: Affidavit of Death, Transfer

Document Type	Affidavit of Death
Jurisdiction	SAN MATEO CA
Recording Date	Oct 19, 2020
Property Address	412 30TH AVE, SAN MATEO, CA 94403-2719
Document Number	0000113328
Instrument Date	Sep 29, 2020
Instrument	113328
Transaction Type	Transfer
Record Updated	Nov 24, 2020
Title Company	ATTORNEY ONLY

Transaction

Tax	$0.00
Additional	Multiple Parcels

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Personal Trust
Address	60 ANTIOCH DR SAN MATEO CA 944033512, SAN MATEO, CA 94403-3512

October 2020: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	SAN MATEO CA
Recording Date	Oct 19, 2020
Property Address	412 30TH AVE, SAN MATEO, CA 94403-2719
Document Number	0000113329
Instrument Date	Sep 21, 2020
Instrument	113329
Transaction Type	Transfer
Record Updated	Nov 24, 2020
Title Company	ATTORNEY ONLY

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property
Address	60 ANTIOCH DR SAN MATEO CA 944033512, SAN MATEO, CA 94403-3512

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		$1,688,591 (+2%) Land $1,242,631 Building $445,960
2025	$20,641.00 (+3.82%) Homeowner's exemption	$1,655,482 (+4.04%) Land $1,218,266 Building $437,216
2023	$19,881.00 (+0.78%) Homeowner's exemption	$1,591,200 Land $1,170,960 Building $420,240	$1,962,180
2022	$19,727.00

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	2 in force
Nearby Flood Claims	4 (1998–2022)
Claims Outside the SFHA	4 of 4
Most Recent Claim	Dec 2022 · rainfall accumulation

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 716 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 · Fiber in parts of the area	1,500 / 50

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

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