40 Key Largo Course, Corte Madera, CA 94925 Property Records

Marin County property record for 40 Key Largo Course, Corte Madera, CA 94925

Property Summary

Property Type	Single Family Home
Details	3 bd · 2 ba · 1,452 sqft · built 1958
Lot Size	0.241 acres (10,500 sqft)
Owner	2 Individual Names on Record
Last Sale	$1,700,000 (May 2023)
Tax Bill	$22,779 (2025)
Deeds & Mortgages	May 2023 Sale & Mortgage
Flood Zone	Zone AE (high risk)
APN	`026-171-41`

Property Details

APN / Parcel Number

Primary APN	`026-171-41`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Building Area	1,452 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1958
Effective Year Built	Effective 1959
Architectural Style	Contemporary
Lot Area	10,500 sqft (0.241 acres)
Garage Area	480 sqft
Parking Spaces	2 Parking Spaces
Deck Area	560 sqft

Utilities, Heating & Cooling

Heating System	Central

Location & Zoning

Street Address	40 KEY LARGO CRSE
City	CORTE MADERA
State	CA
Zip	94925-1854
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Subdivision	MARINER COVE
Legal Lot Number	23
Jurisdiction	MARIN CA
Township / Civil Division	ROSS VALLEY
Census Block Group	1
Census Block	1000
Census Tract	121200

Owner

Source: Marin County records, as of August 17, 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	40 KEY LARGO CRSE, CORTE MADERA, CA 94925-1854
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Community Property

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	May 19, 2023 · Amount on Record
Deed Sale	May 19, 2023 · Amount on Record
Deed Document Number	202312691
Prior Transfer Date	Oct 27, 1993
Prior Transfer Doc	0000100324
Record Updated	Oct 29, 2026

May 2023: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	MARIN CA
Recording Date	May 19, 2023
Property Address	40 KEY LARGO CRSE, CORTE MADERA, CA 94925-1854
Document Number	0000012691
Map Reference	MB 9 PG 99
Instrument Date	May 17, 2023
Instrument	2023-0012691
Transaction Type	Transfer
Record Updated	Jun 1, 2023
Title Company	CAL LAND TITLE COMPANY

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$1,870.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property with Right of Survivorship
Address	40 KEY ARGO COURSE, CORTE MADERA, CA 94925-1854
Investor	Possibly a Property Investor

Mortgage

Document Number	0000012692
Date	May 19, 2023
Instrument	2023-0012692

Lender

Name	THE UNIVERISTY OF CALIFORNIA
Type	Non-Lending Institution

Agreement

Type	Stand-Alone First Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Jun 1, 2053

Mortgage

Document Number	0000012693
Date	May 19, 2023
Instrument	2023-0012693

Lender

Name	THE UNIVERISTY OF CALIFORNIA
Type	Non-Lending Institution
Address	OAKLAND, CA 94607

Agreement

Type	Stand-Alone First Mortgage
Amount	Amount Recorded
Term	181 Months
Due	Jun 1, 2038

Tax Assessment & Valuation

Source: Marin County assessment roll, as of July 13, 2026

Property Jurisdictions

Type	Name
State	California
County	Marin County
Municipality	Corte Madera Town
Elementary School District	Larkspur Elementary School District (KG - 08)
Secondary School District	Tamalpais Union High School District (09 - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$1,800,325 (+2%) Land $1,114,260 Building $686,065
2025	$22,779.00 (+664.14%)	$1,765,038 (+1,621.89%) Land $1,092,420 Building $672,618
2023	$2,981.00 (+73.01%) Homeowner's exemption	$102,506 Land $32,990 Building $69,516
2022	$1,723.00

Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.

Flood

Source: FEMA National Flood Hazard Layer, effective October 18, 2023 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood Zone	Zone AE high risk
100-Year Floodplain	Yes 1% annual chance
Floodway	No
Base Flood Elevation	10.0 ft
Flood Insurance Requirement	Required federally backed loans
Flood Insurance Cost	Premium on Record median of 149 policies
Community Rating System	Class 6 (20% premium discount)
Nearby Flood Policies	149 in force
Nearby Flood Claims	44 (1982–2026)
Claims Outside the SFHA	21 of 44
Most Recent Claim	Jan 2026 · tidal / storm surge
Claims by Event	Severe Storms, Flooding, Mudslides, And Landslides, Dec 2005 · 2 claims Severe Winter Storms And Flooding, Feb 1998 · 5 claims 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

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	MARIN MUNICIPAL WATER DISTRICT serves 188,116 people · EPA ID CA2110002
Water Source	Surface water
Last State Inspection	Aug 2023
Lead	Under 1 ppb (2019–2021) 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. This system sells water to local utilities; the supplier billing this address may be one of them.

Internet Providers

Source: FCC Broadband Data Collection, based on 652 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 250
Unwired Fixed Wireless	300 / 25
T-Mobile Fixed Wireless	100 / 20

May also be available: AT&T, Verizon.

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