81 del Casa Dr, Mill Valley, CA 94941 Property Records

Marin County property record for 81 del Casa Dr, Mill Valley, CA 94941

Property Summary

Property Type	Single Family Home
Details	4 bd · 3 ba · 2,626 sqft · built 1948
Lot Size	0.184 acres (8,000 sqft)
Owner	2 Individual Names on Record
Last Sale	$2,900,000 (Sep 2023)
Tax Bill	$36,932 (2025)
Deeds & Mortgages	Sep 2023 Sale Mar 2017 Transfer + 1 more
Flood Zone	Zone X (moderate risk)
APN	`029-171-03`

Property Details

APN / Parcel Number

Primary APN	`029-171-03`

Interior

Bedrooms	4 Beds
Full Baths	3 Baths
Building Area	2,626 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1948
Effective Year Built	Effective 1963
Architectural Style	Contemporary
Lot Area	8,000 sqft (0.184 acres)
Deck Area	612 sqft
Patio Area	612 sqft

Utilities, Heating & Cooling

Heating System	Central

Location & Zoning

Street Address	81 DEL CASA DR
City	MILL VALLEY
State	CA
Zip	94941-1304
Property Category	Residential
Property Type	Residential > Single Family > Home
Jurisdiction	MARIN CA
Township / Civil Division	SOUTHEAST MARIN
Census Block Group	1
Census Block	1003
Census Tract	126100

Owner

Source: Marin County records, as of July 13, 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	81 DEL CASA DR, MILL VALLEY, CA 94941-1304
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Sep 20, 2023	Grant Deed, Transfer FIDELITY NATIONAL TITLE, FIDELITY NATIONAL TITLE CO
Mar 21, 2017	Quit Claim Deed, Transfer Quitclaim
Mar 21, 2017	Affidavit of Death, Transfer ATTORNEY ONLY

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Sep 20, 2023 · Amount on Record
Deed Sale	Sep 20, 2023 · Amount on Record
Deed Document Number	202323108
Prior Transfer Date	Mar 6, 2017
Prior Transfer Doc	0000011707
Record Updated	Sep 20, 2026

September 2023: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	MARIN CA
Recording Date	Sep 20, 2023
Property Address	81 DEL CASA DR, MILL VALLEY, CA 94941-1304
Document Number	0000023108
Instrument Date	Sep 12, 2023
Instrument	2023-0023108
Transaction Type	Transfer
Record Updated	Oct 3, 2023
Title Company	FIDELITY NATIONAL TITLE, FIDELITY NATIONAL TITLE CO

Transaction

Amount	Amount Recorded
Tax	$3,190.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	81 DEL CASA DR, MILL VALLEY, CA 94941-1304

March 2017: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	MARIN CA
Recording Date	Mar 21, 2017
Property Address	81 DEL CASA DR, MILL VALLEY, CA 94941-1304
Document Number	0000011707
Instrument Date	Mar 6, 2017
Instrument	11707
Transaction Type	Transfer
Record Updated	Mar 29, 2017

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Living Trust
Address	81 DEL CASA DR MILL VALLEY CA 949411304, MILL VALLEY, CA 94941-1304

March 2017: Affidavit of Death, Transfer

Document Type	Affidavit of Death
Jurisdiction	MARIN CA
Recording Date	Mar 21, 2017
Property Address	81 DEL CASA DR, MILL VALLEY, CA 94941-1304
Document Number	0000011706
Instrument Date	Mar 6, 2017
Instrument	11706
Transaction Type	Transfer
Record Updated	Mar 29, 2017
Title Company	ATTORNEY ONLY

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Living Trust
Address	81 DEL CASA DR MILL VALLEY CA 949411304, MILL VALLEY, CA 94941-1304

Tax Assessment & Valuation

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

Property Jurisdictions

Type	Name
State	California
County	Marin County
Municipality	Mill Valley City
Elementary School District	Mill Valley 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		$3,017,160 (+2%) Land $1,976,760 Building $1,040,400
2025	$36,932.00 (+619.78%)	$2,958,000 (+1,077.84%) Land $1,938,000 Building $1,020,000
2023	$5,131.00 (-74.68%) Homeowner's exemption	$251,137 Land $65,981 Building $185,156
2022	$20,267.00

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 X moderate risk
500-Year Floodplain	Yes 0.2% annual chance
Nearest Special Flood Hazard Area	Zone AO, within 100 ft
Flood Insurance Requirement	Not required lenders may require it
Flood Insurance Cost	Premium on Record median of 10 policies
Nearby Flood Policies	10 in force
Nearby Flood Claims	9 (1982–1998)
Claims Outside the SFHA	8 of 9
Most Recent Claim	May 1998 · other causes
Claims by Event	Severe Winter Storms And Flooding, Feb 1998 · 2 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	Low lower than 80% of the US · lower than 88% of California
Wildfire Likelihood	0.02% annual chance
Exposure	Indirect within ember reach
Adjoins Burnable Land	Yes

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 301 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
AT&T Fiber	5,000 / 5,000
Xfinity Cable	2,000 / 250
Unwired Fixed Wireless	300 / 25

May also be available: T-Mobile, Verizon.

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