18 Thomas Ct, San Mateo, CA 94401 Property Records

San Mateo County property record for 18 Thomas Ct, San Mateo, CA 94401

Property Summary

Property Type	Single Family Home
Details	3 bd · 2 ba · 1,410 sqft · built 1946
Lot Size	0.102 acres (4,448 sqft)
Owner	2 Individual Names on Record
Last Sale	$1,162,500 (Jun 2018)
Tax Bill	$16,651 (2025)
Deeds & Mortgages	Feb 2017 Mortgage May 2020 Mortgage + 1 more
Flood Zone	Zone X (reduced by levee)
APN	`033-071-090`

Property Details

APN / Parcel Number

Primary APN	`033-071-090`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Total Rooms	6 Rooms
Stories	1 Story
Building Area	1,410 sqft Living Area
1st Floor Area	970 sqft
Family Room	Family Room

Exterior

Year Built	Built 1946
Effective Year Built	Effective 1946
Lot Area	4,448 sqft (0.102 acres)
Lot Dimensions	100 ft deep x 42 ft wide
Garage Area	220 sqft
Parking Spaces	1 Parking Space

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	18 THOMAS CT
City	SAN MATEO
State	CA
Zip	94401-1896
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R20000
Legal Description	LOT 36 BLOCK 2 COLLEGE PARK NO 2 RSM 24/32 CITY OF SAN MATEO
Legal Subdivision	COLLEGE PARK NO 2
Legal Block	2
Legal Lot Number	36
Jurisdiction	SAN MATEO CA
Township / Civil Division	SAN MATEO
Census Block Group	1
Census Block	1003
Census Tract	606201

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	18 THOMAS CT, SAN MATEO, CA 94401-1896
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Community Property

Deeds, Mortgages & Sale History

Date	Document
Feb 1, 2017	Deed of Trust, Mortgage · Conventional Mortgage US BANK NA
May 2, 2020	Deed of Trust, Mortgage STAR ONE CU
Jun 6, 2018	Grant Deed, Transfer · Conventional Mortgage MUFG UNION BANK NA

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jun 6, 2018 · Amount on Record
Deed Sale	Jun 6, 2018 · Amount on Record
Prior Sale	May 16, 2014 · Amount on Record
Deed Document Number	201843503
Prior Transfer Date	May 14, 2014
Prior Transfer Doc	0000042577
Record Updated	Oct 29, 2026

February 2017: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Property Address	18 THOMAS CT, SAN MATEO, CA 94401-1896
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	FIRST AMERICAN TITLE INS CO

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000010557
Date	Feb 1, 2017
Instrument	2017-010557

Lender

Name	US BANK NA
Type	Bank
Address	OWENSBORO, KY 42301

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Feb 1, 2047

May 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	SAN MATEO CA
Property Address	18 THOMAS CT, SAN MATEO, CA 94401-1896
Document Number	0000041417
Instrument Date	May 2, 2020
Transaction Type	Mortgage
Record Updated	Jun 4, 2020
Title Company	CHICAGO TITLE COMPANY, CHICAGO TITLE CO

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property
Address	18 THOMAS CT SAN MATEO CA 944011896, SAN MATEO, CA 94401-1896

Mortgage

Document Number	0000041417
Date	May 8, 2020
Instrument	41417

Lender

Name	STAR ONE CU
Type	Credit Union
Address	SUNNYVALE, CA 94088

Agreement

Amount	Amount Recorded
Term	360 Months
Due	May 7, 2050

June 2018: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN MATEO CA
Recording Date	Jun 6, 2018
Property Address	18 THOMAS CT, SAN MATEO, CA 94401-1896
Document Number	0000043503
Map Reference	MB24 PG32
Instrument Date	May 29, 2018
Instrument	2018-043503
Transaction Type	Transfer
Record Updated	Aug 9, 2021
Title Company	FIRST AMERICAN TITLE CO

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name
Address	00000

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Right of Survivorship
Address	18 THOMAS CT, SAN MATEO, CA 94401-1896

Mortgage

Document Number	0000043504
Date	Jun 6, 2018
Instrument	2018-043504

Lender

Name	MUFG UNION BANK NA
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Jul 1, 2048

Mortgage

Document Number	0000043505
Date	Jun 6, 2018
Instrument	2018-043505

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	Jun 20, 2048

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

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		$1,349,175 (+2%) Land $1,218,612 Building $130,563
2025	$16,651.00 (+3.12%) Homeowner's exemption	$1,322,721 (+4.04%) Land $1,194,718 Building $128,003
2023	$16,147.00 (+1.87%) Homeowner's exemption	$1,271,361 Land $1,148,327 Building $123,034	$1,327,140
2022	$15,850.00

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 reduced by levee · depends on levee performance
Flood Insurance Requirement	Not required lenders may require it
Nearby Flood Policies	2 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

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 694 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	2,000 / 250
Astound Broadband Cable	1,500 / 50
Sonic Telecom Fiber	1,000 / 1,000
Verizon Fixed Wireless	1,000 / 75
Etheric Networks Fixed Wireless	250 / 100

May also be available: GeoLinks, T-Mobile, Unwired.

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