515 30th Ave, San Mateo, CA 94403 Property Records

San Mateo County property record for 515 30th Ave, San Mateo, CA 94403

Property Summary

Property Type	Single Family Home
Details	3 bd · 1 ba · 1,570 sqft · built 1942
Lot Size	0.125 acres (5,443 sqft)
Owner	2 Company Names on File
Last Sale	$1,700,000 (Sep 2022)
Tax Bill	$22,575 (2025)
Deeds & Mortgages	Apr 2026 Sale Sep 2021 Line of Credit + 2 more
Flood Zone	Zone X (minimal risk)
APN	`039-302-150`

Property Details

APN / Parcel Number

Primary APN	`039-302-150`

Interior

Bedrooms	3 Beds
Full Baths	1 Bath
Total Rooms	6 Rooms
Stories	2 Stories
Building Area	1,570 sqft Living Area
Gross Area	2,120 sqft
1st Floor Area	1,330 sqft
2nd Floor Area	240 sqft
Basement Area	550 sqft
Family Room	Family Room
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1942
Effective Year Built	Effective 1942
Architectural Style	Ranch
Exterior Material	Stucco
Construction Type	Frame
Roof Material	Composition Shingle
Lot Area	5,443 sqft (0.125 acres)
Lot Dimensions	109 ft deep x 50 ft wide
Garage Type	Basement
Garage Area	550 sqft
Parking Spaces	1 Parking Space

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central
Sewer	Municipal
Water Source	Commercial

Location & Zoning

Street Address	515 30TH AVE
City	SAN MATEO
State	CA
Zip	94403-3203
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R10006
Legal Description	LOT 8 BLOCK 17 SAN MATEO TERRACE MAP NO 5 RSM 22/35 CITY OF SAN MATEO
Legal Subdivision	SAN MATEO TERRACE MAP NO 5
Legal Block	17
Legal Lot Number	8
Jurisdiction	SAN MATEO CA
Township / Civil Division	SAN MATEO
Census Block Group	3
Census Block	3000
Census Tract	607300

Owner

515 30th Ave is owned by a company that bought it in September 2022.

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

Owner of Record	2 Company Names on File
Mailing Address	515 30TH AVE, SAN MATEO, CA 94403-3203
Owner Type	Company
Vesting	Life Tenant

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
Apr 16, 2026	Grant Deed, Transfer NONE LISTED ON DOCUMENT
Sep 24, 2021	Deed of Trust, Mortgage · Line of Credit FIRST REPUBLIC BANK
Sep 26, 2022	Grant Deed, Transfer · Conventional Mortgage TECHNOLOGY CU
Oct 2, 2018	Quit Claim Deed, Transfer ATTORNEY ONLY

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Sep 26, 2022 · Amount on File
Deed Sale	Sep 26, 2022 · Amount on File
Deed Document Number	202269487
Prior Transfer Date	Sep 19, 1994
Prior Transfer Doc	0000148535
Record Updated	Oct 29, 2026

April 2026: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN MATEO CA
Recording Date	Apr 16, 2026
Property Address	515 30TH AVE, SAN MATEO, CA 94403-3203
Document Number	0000019894
Instrument Date	Apr 1, 2026
Instrument	202619894
Transaction Type	Transfer
Record Updated	Jul 12, 2026
Title Company	NONE LISTED ON DOCUMENT

Transaction

Tax	$0.00
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Life Tenant
Address	515 30TH AVE, SAN MATEO, CA 94403-3203

September 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Property Address	515 30TH AVE, SAN MATEO, CA 94403-3203
Transaction Type	Mortgage
Record Updated	Oct 18, 2022
Title Company	NORTH AMERICAN TITLE COMPANY

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	515 30TH AVE, SAN MATEO, CA 94403-3203

Mortgage

Document Number	0000136985
Date	Sep 24, 2021
Instrument	2021-136985

Lender

Name	FIRST REPUBLIC BANK
Type	Bank
Address	SAN FRANCISCO, CA 94111

Agreement

Type	Line of Credit
Amount	Amount on Record
Term	300 Months
Due	Sep 26, 2046

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

September 2022: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN MATEO CA
Recording Date	Sep 26, 2022
Property Address	515 30TH AVE, SAN MATEO, CA 94403-3203
Document Number	0000069487
Map Reference	MB 22 PG 35
Instrument Date	Sep 9, 2022
Instrument	2022-069487
Transaction Type	Transfer
Record Updated	Oct 18, 2022
Title Company	CHICAGO TITLE COMPANY

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$10,370.00
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	400 EL CAMINO REAL UNIT 318, 318, BELMONT, CA 94002-2174

Mortgage

Document Number	0000069488
Date	Sep 26, 2022
Instrument	2022-069488

Lender

Name	TECHNOLOGY CU
Type	Credit Union

Agreement

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

Interest

Rate Type	Adjustable Rate
Rate	4.75%
Type Change Date	Oct 1, 2029
Change Frequency	6 Months
Min Rate At Change	2.75%
Max Rate At Change	9.75%
Index	Other
Max Rate	9.75%

October 2018: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	SAN MATEO CA
Recording Date	Oct 2, 2018
Property Address	515 30TH AVE, SAN MATEO, CA 94403-3203
Document Number	0000076849
Instrument Date	Sep 28, 2018
Instrument	76849
Transaction Type	Transfer
Record Updated	Oct 23, 2018
Title Company	ATTORNEY ONLY

Transaction

Tax	$0.00
Additional	Quitclaim Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Revocable Trust
Address	515 30TH AVE SAN MATEO CA 944033203, SAN MATEO, CA 94403-3203

Tax Assessment & Valuation

The 2025 property tax bill for 515 30th Ave was $22,575, up 7.3% from the year before.

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		$1,868,557 (+5.65%) Land $1,363,652 Building $504,905
2025	$22,575.00 (+7.27%)	$1,768,680 Land $1,336,914 Building $431,766
2024	$21,046.00 (+2.31%)
2023	$20,570.00 (+359.66%)	$1,700,000 Land $1,285,000 Building $415,000	$1,487,790
2022	$4,475.00

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

Flood

FEMA maps place 515 30th Ave in Zone X, an area of minimal flood risk, though there have been 2 flood claims nearby since 2009.

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	2 (2009–2017)
Claims Outside the SFHA	2 of 2
Most Recent Claim	Jan 2017 · Severe Winter Storms, Flooding, And Mudslides

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 515 30th Ave 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	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 732 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, T-Mobile.

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