80 Macbain Ave, #80A, Atherton, CA 94027 Property Records

San Mateo County property record for 80 Macbain Ave, #80A, Atherton, CA 94027

Property Summary

Property Type	Single Family Home
Details	5 bd · 5.5 ba · 4,891 sqft · built 2020
Lot Size	0.327 acres (14,244 sqft)
Owner	2 Company Names on Record
Last Sale	$7,250,000 (Aug 2020)
Tax Bill	$88,593 (2025)
Deeds & Mortgages	Aug 2020 Sale & Mortgage Jan 2018 Construction Loan + 1 more
Flood Zone	Zone X (minimal risk)
APN	`070-354-070`

Property Details

APN / Parcel Number

Primary APN	`070-354-070`

Interior

Bedrooms	5 Beds
Full Baths	5.5 Baths
Half Baths	1 Half Bath
Total Rooms	10 Rooms
Stories	2 Stories
Building Area	4,891 sqft Living Area
1st Floor Area	2,293 sqft
2nd Floor Area	1,062 sqft
Basement Area	1,536 sqft
Finished Basement	1,536 sqft
Family Room	Family Room

Exterior

Year Built	Built 2020
Effective Year Built	Effective 2020
Lot Area	14,244 sqft (0.327 acres)
Lot Dimensions	286 ft deep x 50 ft wide
Garage Area	891 sqft
Parking Spaces	4 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Central

Location & Zoning

Street Address	80 MACBAIN AVE, 80A
City	ATHERTON
State	CA
Zip	94027-4119
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R1001A
Legal Description	SWLY 50 FT OF NELY 100 FT OF LOT 26 THOMPSONS SUB VALPARAISOPARK RSM 3/76 TOWN OF ATHERTON
Legal Subdivision	THOMPSONS SUB VALPARAISOPARK
Legal Lot Number	26
Jurisdiction	SAN MATEO CA
Township / Civil Division	SAN MATEO
Census Block Group	1
Census Block	1010
Census Tract	611400

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 Company Names on Record
Mailing Address	80 MACBAIN AVE, ATHERTON, CA 94027-4119
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust

Deeds, Mortgages & Sale History

Date	Document
Aug 7, 2020	Grant Deed, Transfer · Conventional Mortgage SILICON VALLEY BANK
Jan 18, 2018	Trustee's Deed, Construction Loan · Construction Mortgage WESTERN ALLIANCE BK
Jul 12, 2017	Grant Deed, Transfer · Commercial Mortgage WESTERN ALLIANCE BANK

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Aug 7, 2020 · Amount on Record
Deed Sale	Aug 7, 2020 · Amount on Record
Prior Sale	Jul 12, 2017 · Amount on Record
Deed Document Number	202078099
Prior Transfer Date	Mar 20, 1998
Prior Transfer Doc	0000047685
Record Updated	Oct 29, 2026

August 2020: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN MATEO CA
Recording Date	Aug 7, 2020
Property Address	80 MACBAIN AVE, ATHERTON, CA 94027-4119
Document Number	0000078099
Map Reference	MB 3 PG 76
Instrument Date	Aug 5, 2020
Instrument	2020-078099
Transaction Type	Transfer
Record Updated	Aug 9, 2021
Title Company	LAWYERS TITLE COMPANY

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$7,975.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Living Trust
Address	80 MACBAIN AVE, ATHERTON, CA 94027-4119

Mortgage

Document Number	0000078100
Date	Aug 7, 2020
Instrument	2020-078100

Lender

Name	SILICON VALLEY BANK
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Sep 1, 2050

Interest

Rate Type	Adjustable Rate
Rate	2.37%
Type Change Date	Sep 1, 2027
Change Frequency	Annually
Min Rate At Change	2.25%
Max Rate At Change	4.37%
Index	1-Year LIBOR
Max Rate	8.37%

January 2018: Trustee's Deed, Construction Loan

Document Type	Trustee's Deed
Jurisdiction	SAN MATEO CA
Recording Date	Jan 18, 2018
Property Address	80 MACBAIN AVE, ATHERTON, CA 94027-4119
Instrument Date	Jan 12, 2018
Instrument	3242
Transaction Type	Construction Loan
Record Updated	Feb 19, 2018
Title Company	LAWYERS TITLE/NTHRN CA

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	704 OAK GROVE AVE MENLO PARK CA 940254320, MENLO PARK, CA 94025-4320

Mortgage

Document Number	0000003242
Date	Jan 18, 2018
Instrument	3242

Lender

Name	WESTERN ALLIANCE BK
Type	Bank
Address	55 ALMADEN BLVD, SAN JOSE, CA 95113-1608

Agreement

Type	Construction Mortgage
Amount	Amount Recorded

Interest

Rate Type	Adjustable Rate

July 2017: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	SAN MATEO CA
Recording Date	Jul 12, 2017
Property Address	80 MACBAIN AVE, ATHERTON, CA 94027-4119
Document Number	0000059526
Map Reference	MAP D PG47
Instrument Date	Jul 6, 2017
Instrument	2017-059526
Transaction Type	Transfer
Record Updated	Aug 9, 2021
Title Company	LAWYERS TITLE COMPANY

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

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	704 OAK GROVE AVE, MENLO PARK, CA 94025-4320

Mortgage

Document Number	0000059527
Date	Jul 12, 2017
Instrument	2017-059527

Lender

Name	WESTERN ALLIANCE BANK
Type	Bank

Agreement

Type	Commercial Mortgage
Amount	Amount Recorded

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	Assessed Market Value
2026		$8,004,584 (+2%) Land $4,416,322 Building $3,588,262
2025	$88,593.00 (+4.82%) Homeowner's exemption	$7,847,632 (+4.04%) Land $4,329,728 Building $3,517,904
2023	$84,522.00 (+2.42%) Homeowner's exemption	$7,542,900 Land $4,161,600 Building $3,381,300	$7,300,890
2022	$82,523.00

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 minimal risk
Flood Insurance Requirement	Not required lenders may require it
Nearby Flood Policies	2 in force
Nearby Flood Claims	2 (1998)
Claims Outside the SFHA	2 of 2
Most Recent Claim	Feb 1998 · Severe Winter Storms And Flooding
Claims by Event	Severe Winter Storms And Flooding, Feb 1998 · 2 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

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	Low lower than 94% of the US · lower than 96% of California
Wildfire Likelihood	Under 0.01% annual chance
Exposure	None beyond 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 - 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 253 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 250
Verizon Fixed Wireless	300 / 20
Etheric Networks Fixed Wireless	250 / 100
T-Mobile Fixed Wireless	100 / 20
AT&T DSL · Fiber, Fixed Wireless in parts of the area	100 / 20

May also be available: GeoLinks, Race Communications, Sonic Telecom.

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