54 Serrano Dr, Atherton, CA 94027 Property Records

San Mateo County property record for 54 Serrano Dr, Atherton, CA 94027 · Last verified July 2026

Property Highlights

Property Type	Residential > Single Family > Home
Bedrooms	5 Beds
Bathrooms	4.5 Baths
Year Built	Built 1940
Square Footage	5,327 sqft Living Area
Lot Size	39,889 sqft (0.916 acres)
Garage	350 sqft
Last Sale	$10,580,000 (2018)
Tax Bill	$132,965.00 (2025)

Property Details

APN / Parcel Number

Primary APN	`059-281-100`

Interior

Bedrooms	5 Beds
Full Baths	4.5 Baths
Partial Baths	1 Partial Baths
Total Rooms	11 Rooms
Building Area	5,327 sqft Living Area
1st Floor	1,630 sqft 1st Floor
Family Room	Family Room
Stories	1 Stories
Study	Study

Exterior

Year Built	Built 1940
Effective Year Built	Effective 1940
Lot Area	39,889 sqft (0.916 acres)
Depth X Width	157 ft x 276 ft Depth x Width
Parking Spaces	1 Parking Spaces
Garage Area	350 sqft Garage

Utilities and HVAC

Cooling System	Central Cooling
Heating System	Central Heating

Location & Zoning

Street Address	54 SERRANO DR
City	ATHERTON
State	CA
Zip	94027-3934
Property Usage	Residential Property Usage
Type	Residential > Single Family > Home
Legal Description	LOT 4 BLOCK 1 ATHERTON OAKS RSM 16/10 11 TOWN OF ATHERTON
Legal Subdivision	ATHERTON OAKS
Legal Block	1
Legal Lot Number	4
Jurisdiction	SAN MATEO CA
Minor Civil Division	SAN MATEO
Census Blockgroup	4
Census Block	4006
Census Tract	611400

Owner

Source: San Mateo County records · APN 059-281-100

Assessment roll updated July 15, 2026 · Last verified July 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	2 Company Names on File
Mailing Address	54 SERRANO DR, ATHERTON, CA 94027-3934
Owner Type	Owner is a Company
Vesting	Owner is a Trust, Trust

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Sale	May 30, 2018 · Amount on Record
Deed Sale	May 30, 2018 · Amount on Record
Prior Sale	Nov 24, 2009 · Amount on Record
Deed Doc Number	201841390
Prior Transfer Date	Oct 24, 2003
Prior Transfer Doc	0000327077
Record Refreshed	Sep 20, 2026

May 2018: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN MATEO CA
Recording Date	May 30, 2018
Property Address	54 SERRANO DR, ATHERTON, CA 94027-3934
Document Number	0000041390
Map Reference	MB16 PG10&11
Instrument Date	May 15, 2018
Instrument	2018-041390
Transaction Type	Transfer
Record Updated	Aug 09, 2021
Title Company	CHICAGO TITLE CO

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on File
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Rounded Values by County
Additional	Arms Length Transaction

Transferred From (Grantor/Seller)

Name	Verified Name
Address	00000

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	54 SERRANO DR, ATHERTON, CA 94027-3934

Mortgage

Document Number	0000041391
Date	May 30, 2018
Instrument	2018-041391

Lender

Name	FIRST REPUBLIC BANK
Type	Bank

Agreement

Type	Adjustable Rate Mortgage (ARM)
Amount	Amount Recorded
Term	361 Months
Due	Jun 01, 2048

Interest

Rate Type	Adjustable Rate
Rate	3.5%
Type Change Date	Apr 01, 2025
Change Frequency	Annually
Min Rate At Change	2.25%
Max Rate At Change	8.5%
Index	1-Year LIBOR
Max Rate	8.5%

Tax Assessment & Valuation

Source: San Mateo County records · Assessment roll updated July 15, 2026 · Last verified July 2026

Property Jurisdictions

Type	Name
State	California
Municipality	Atherton Town
County	San Mateo County
Elementary School District	Redwood City Elementary School District (KG - 08)
Secondary School District	Sequoia Union High School District (09 - 12)

Tax Bill & Assessment History

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

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$12,278,995 (+2%) Land $9,957,825 Building $2,321,170
2025	$132,965.00 (+2.74%)	$12,038,231 (+4.04%) Land $9,762,574 Building $2,275,657
2023	$129,425.00 (+4.96%)	$11,570,774 Land $9,383,482 Building $2,187,292	$8,371,800
2022	$123,308.00

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, San Mateo County (06081C), updated September 10, 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020

Flood

FEMA Flood Zone	Zone X
Flood Hazard	Minimal
500-Year Floodplain	No
Special Flood Hazard Area	No

Wildfire

Wildfire Risk to Homes	Not rated no burnable land in reach
Wildfire Likelihood	Negligible
Exposure	None beyond ember reach

Values are read at the parcel center point; lenders make the official flood determination.