227 Park Ln, Atherton, CA 94027 Property Records

San Mateo County property record for 227 Park Ln, Atherton, CA 94027

Property Summary

Property Type	Single Family Home
Details	5 bd · 5.5 ba · 6,555 sqft · built 1936
Lot Size	1.12 acres (49,156 sqft)
Owner	2 Company Names on Record
Last Sale	$15,838,000 (Jan 2022)
Tax Bill	$161,267 (2025)
Deeds & Mortgages	Jan 2022 Sale & Mortgage Oct 2021 Transfer + 1 more
Flood Zone	Zone X (minimal risk)
APN	`070-343-020`

Property Details

APN / Parcel Number

Primary APN	`070-343-020`

Interior

Bedrooms	5 Beds
Full Baths	5.5 Baths
Half Baths	1 Half Bath
Total Rooms	14 Rooms
Stories	2 Stories
Building Area	6,555 sqft Living Area
1st Floor Area	1,460 sqft
2nd Floor Area	1,350 sqft
Family Room	Family Room
Study	Study
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1936
Effective Year Built	Effective 1936
Lot Area	49,156 sqft
Lot Dimensions	305 ft deep x 156 ft wide
Garage Area	960 sqft
Parking Spaces	4 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	227 PARK LN
City	ATHERTON
State	CA
Zip	94027-5410
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R1001A
Legal Description	1.09 AC NELY PTN OF LOT 8A QUILLOTA TRACT RSM 3/60 TOWN OF ATHERTON
Legal Subdivision	QUILLOTA TRACT
Legal Lot Number	8A
Jurisdiction	SAN MATEO CA
Township / Civil Division	SAN MATEO
Census Block Group	2
Census Block	2006
Census Tract	611400

Owner

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 Company Names on Record
Mailing Address	227 PARK LN, ATHERTON, CA 94027-5410
Owner Type	Company
Vesting	Trust

Deeds, Mortgages & Sale History

Date	Document
Jan 10, 2022	Grant Deed, Transfer · Conventional Mortgage EAST WEST BANK
Oct 27, 2021	Intrafamily Transfer, Transfer
Mar 21, 2018	Grant Deed, Transfer

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Jan 10, 2022 · Amount on Record
Deed Sale	Jan 10, 2022 · Amount on Record
Prior Sale	Mar 21, 2018 · Amount on Record
Deed Document Number	20222292
Prior Transfer Date	Oct 6, 2021
Prior Transfer Doc	0000151154
Record Updated	Sep 20, 2026

January 2022: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN MATEO CA
Recording Date	Jan 10, 2022
Property Address	227 PARK LN, ATHERTON, CA 94027-5410
Document Number	0000002292
Map Reference	MB D PG 32
Instrument Date	Dec 28, 2021
Instrument	2022-002292
Transaction Type	Transfer
Record Updated	Jun 7, 2023
Title Company	LAWYERS TITLE COMPANY

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$17,421.80
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Irrevocable Trust
Address	227 PARK LN, ATHERTON, CA 94027-5410

Mortgage

Document Number	0000002293
Date	Jan 10, 2022
Instrument	2022-002293

Lender

Name	EAST WEST BANK
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Feb 1, 2052

Interest

Rate Type	Adjustable Rate
Rate	4%
Type Change Date	Feb 1, 2025
Change Frequency	Annually
Min Rate At Change	3.25%
Max Rate At Change	10%
Index	1-Year CMT
Max Rate	10%

October 2021: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	SAN MATEO CA
Recording Date	Oct 27, 2021
Property Address	227 PARK LN, ATHERTON, CA 94027-5410
Document Number	0000151154
Map Reference	MB D PG 32
Instrument Date	Oct 6, 2021
Instrument	2021-151154
Transaction Type	Transfer
Record Updated	Nov 22, 2021

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name

March 2018: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN MATEO CA
Recording Date	Mar 21, 2018
Property Address	227 PARK LN, ATHERTON, CA 94027-5410
Document Number	0000020873
Instrument Date	Mar 8, 2018
Instrument	20873
Transaction Type	Transfer
Record Updated	Apr 12, 2018

Transaction

Amount	Amount Recorded
Tax	$8,738.40
Amount Accuracy	Full Value
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	227 PARK LN ATHERTON CA 940275410, ATHERTON, CA 94027-5410

Tax Assessment & Valuation

Source: San Mateo County assessment roll, as of July 15, 2026

Property Jurisdictions

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

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$14,500,000 (-) Land $12,156,000 Building $2,344,000
2025	$161,267.00 (-9.38%)	$14,500,000 (-10.24%) Land $12,156,000 Building $2,344,000
2023	$177,968.00 (-4.68%)	$16,154,760 Land $13,543,560 Building $2,611,200
2022	$186,712.00

Assessed value is set for property tax purposes and is not a market price estimate.

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
Flood Insurance Cost	Premium on Record median of 13 policies
Nearby Flood Policies	13 in force
Nearby Flood Claims	2 (1995–1998)
Claims Outside the SFHA	1 of 2
Most Recent Claim	Feb 1998 · Severe Winter Storms And Flooding

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	Low lower than 96% of the US · lower than 97.4% of California
Wildfire Likelihood	0.01% annual chance
Exposure	Direct burnable vegetation

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 - BEAR GULCH private · serves 60,382 people · EPA ID CA4110006
Water Source	Surface water
Last State Inspection	Feb 2025
Lead	4 ppb (2022–2024) 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 126 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Race Communications Fiber	10,000 / 10,000
AT&T Fiber · Fixed Wireless in parts of the area	5,000 / 5,000
Xfinity Cable	2,000 / 250

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

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