266 Hillside Ave, Mill Valley, CA 94941 Property Records

Marin County property record for 266 Hillside Ave, Mill Valley, CA 94941

Property Summary

Property Type	Single Family Home
Details	4 bd · 2 ba · 2,053 sqft · built 1940
Lot Size	0.227 acres (9,900 sqft)
Owner	2 Company Names on Record
Last Sale	$2,300,000 (Aug 2020)
Tax Bill	$31,857 (2025)
Deeds & Mortgages	Oct 2021 Transfer Aug 2020 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`029-111-07`

Property Details

APN / Parcel Number

Primary APN	`029-111-07`

Interior

Bedrooms	4 Beds
Full Baths	2 Baths
Building Area	2,053 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1940
Effective Year Built	Effective 1985
Architectural Style	Contemporary
Lot Area	9,900 sqft (0.227 acres)
Garage Area	480 sqft
Parking Spaces	2 Parking Spaces
Deck Area	304 sqft
Patio Area	304 sqft

Utilities, Heating & Cooling

Heating System	Central

Location & Zoning

Street Address	266 HILLSIDE AVE
City	MILL VALLEY
State	CA
Zip	94941-1106
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Subdivision	GARDNER
Legal Lot Number	9
Jurisdiction	MARIN CA
Township / Civil Division	SOUTHEAST MARIN
Census Block Group	4
Census Block	4000
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 Company Names on Record
Mailing Address	266 HILLSIDE AVE, MILL VALLEY, CA 94941-1106
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Borrower in Default

Deeds, Mortgages & Sale History

Date	Document
Oct 14, 2021	Intrafamily Transfer, Transfer
Aug 24, 2020	Grant Deed, Transfer · Conventional Mortgage WELLS FARGO BANK NA

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Aug 24, 2020 · Amount on Record
Deed Sale	Aug 24, 2020 · Amount on Record
Prior Sale	Oct 6, 2006 · Amount on Record
Deed Document Number	202038495
Last Transfer Date	Sep 10, 2021
Transfer Doc	0000062930
Record Updated	Sep 20, 2026

October 2021: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	MARIN CA
Recording Date	Oct 14, 2021
Property Address	266 HILLSIDE AVE, MILL VALLEY, CA 94941-1106
Document Number	0000062930
Instrument Date	Sep 10, 2021
Instrument	2021-0062930
Transaction Type	Transfer
Record Updated	Jun 7, 2023

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
Address	266 HILLSIDE AVE, MILL VALLEY, CA 94941-1106

August 2020: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	MARIN CA
Recording Date	Aug 24, 2020
Property Address	266 HILLSIDE AVE, MILL VALLEY, CA 94941-1106
Document Number	0000038495
Instrument Date	Aug 18, 2020
Instrument	2020-0038495
Transaction Type	Transfer
Record Updated	Aug 13, 2021
Title Company	FIDELITY NATIONAL TITLE CO

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$2,530.00
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	266 HILLSIDE AVE, MILL VALLEY, CA 94941-1106

Mortgage

Document Number	0000038496
Date	Aug 24, 2020
Instrument	2020-0038496

Lender

Name	WELLS FARGO BANK NA
Type	Bank

Agreement

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

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		$2,537,129 (+2%) Land $1,518,082 Building $1,019,047
2025	$31,857.00 (+5.02%) Homeowner's exemption	$2,487,400 (+4.04%) Land $1,488,327 Building $999,073
2023	$30,334.00 (+2.58%) Homeowner's exemption	$2,390,839 Land $1,430,550 Building $960,289
2022	$29,570.00

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

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 minimal risk
Flood Insurance Requirement	Not required lenders may require it
Nearby Flood Policies	6 in force
Nearby Flood Claims	5 (1982–2009)
Claims Outside the SFHA	4 of 5
Most Recent Claim	Oct 2009 · other causes

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 67% of the US · lower than 81% of California
Wildfire Likelihood	0.03% 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	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.

Cell Coverage

5G (outdoors only) and 4G LTE

Nearby Properties on Hillside Ave

Nearby Streets

Search Property Records by Address or Parcel Number

Search by:

By searching, you agree to: Terms • Privacy • Disclosures