816 Kathryne Ave, San Mateo, CA 94401 Property Records

San Mateo County property record for 816 Kathryne Ave, San Mateo, CA 94401

Property Summary

Property Type	Single Family Home
Details	2 bd · 1 ba · 820 sqft · built 1949
Lot Size	0.115 acres (5,000 sqft)
Owner	2 Individual Names on File
Last Sale	$840,000 (Nov 2016)
Tax Bill	$12,772 (2025)
Deeds & Mortgages	Apr 2021 Mortgage
Flood Zone	Zone X (reduced by levee)
APN	`033-343-070`

Property Details

APN / Parcel Number

Primary APN	`033-343-070`

Interior

Bedrooms	2 Beds
Full Baths	1 Bath
Total Rooms	4 Rooms
Stories	1 Story
Building Area	820 sqft Living Area
1st Floor Area	820 sqft
Family Room	Family Room
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1949
Effective Year Built	Effective 1949
Architectural Style	Ranch
Exterior Material	Wood Siding
Construction Type	Frame
Roof Material	Tar & Gravel
Lot Area	5,000 sqft (0.115 acres)
Lot Dimensions	100 ft deep x 50 ft wide
Garage Area	240 sqft
Parking Spaces	1 Parking Space

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central
Sewer	Municipal
Water Source	Commercial

Location & Zoning

Street Address	816 KATHRYNE AVE
City	SAN MATEO
State	CA
Zip	94401-3125
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R106
Legal Description	LOT 20 BLOCK 14 SHORE VIEW TRACT MAP NO 8 RSM 30/25 26 27 28CITY OF SAN MATEO
Legal Subdivision	SHORE VIEW TRACT MAP NO 8
Legal Block	14
Legal Lot Number	20
Jurisdiction	SAN MATEO CA
Township / Civil Division	SAN MATEO
Census Block Group	2
Census Block	2004
Census Tract	607701

Owner

816 Kathryne Ave is owned and occupied by two individuals who bought it in November 2016.

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

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Owner of Record	2 Individual Names on File
Mailing Address	816 KATHRYNE AVE, SAN MATEO, CA 94401-3125
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Tenants in Common

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Nov 8, 2016 · Amount on File
Deed Sale	Nov 8, 2016 · Amount on File
Deed Document Number	2016117499
Prior Transfer Date	Oct 4, 2000
Prior Transfer Doc	0000023600
Record Updated	Oct 29, 2026

April 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Property Address	816 KATHRYNE AVE, SAN MATEO, CA 94401-3125
Transaction Type	Mortgage
Record Updated	May 18, 2021
Title Company	LAWYERS TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	816 KATHRYNE AVE, SAN MATEO, CA 94401-3125

Mortgage

Document Number	0000062774
Date	Apr 20, 2021
Instrument	2021-062774

Lender

Name	QUICKEN LOANS LLC
Type	Mortgage Company
Address	DETROIT, MI 48226

Agreement

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

Tax Assessment & Valuation

The 2025 property tax bill for 816 Kathryne Ave was $12,772 with a homeowner's exemption.

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		$994,382 (+2%) Land $883,109 Building $111,273
2025	$12,772.00 Homeowner's exemption	$974,886 Land $865,794 Building $109,092
2023	$12,263.00 (+1.56%) Homeowner's exemption	$937,031 Land $832,175 Building $104,856	$976,770
2022	$12,075.00

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

Flood

FEMA maps place 816 Kathryne Ave in Zone X, where a levee reduces flood risk, though there have been 6 flood claims nearby since 1978.

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 reduced by levee · depends on levee performance
Flood Insurance Requirement	Not required lenders may require it
Flood Insurance Cost	Premium on File median of 12 policies
Nearby Flood Policies	12 in force
Nearby Flood Claims	6 (1978–2004)
Most Recent Claim	Nov 2004
Claims by Event	Severe Storms, Flood, Mudslides & High Tide, Jan 1982 · 4 claims

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 816 Kathryne 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 300 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
AT&T Fiber	5,000 / 5,000
Xfinity Cable	2,000 / 250
Astound Broadband Cable	1,500 / 50
Unwired Fixed Wireless	300 / 25
Verizon Fixed Wireless	300 / 20
Etheric Networks Fixed Wireless	250 / 100