450 Hillside Ave, Mill Valley, CA 94941 Property Records

Marin County property record for 450 Hillside Ave, Mill Valley, CA 94941

Property Summary

Property Type	Single Family Home
Details	5 bd · 4 ba · 4,548 sqft · built 1963
Lot Size	0.447 acres (19,453 sqft)
Owner	2 Individual Names on Record
Last Sale	$3,530,000 (Apr 2020)
Tax Bill	$48,038 (2025)
Deeds & Mortgages	Mar 2017 Mortgage Jul 2017 Mortgage + 4 more
Flood Zone	Zone X (minimal risk)
APN	`029-072-39`

Property Details

APN / Parcel Number

Primary APN	`029-072-39`

Interior

Bedrooms	5 Beds
Full Baths	4 Baths
Building Area	4,548 sqft Living Area
Basement Area	288 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1963
Effective Year Built	Effective 2009
Lot Area	19,453 sqft (0.447 acres)
Garage Area	663 sqft
Parking Spaces	2 Parking Spaces
Deck Area	2,850 sqft

Utilities, Heating & Cooling

Heating System	Central

Location & Zoning

Street Address	450 HILLSIDE AVE
City	MILL VALLEY
State	CA
Zip	94941-1151
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Subdivision	MAP OF BOLSA VALLEY
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 Individual Names on Record
Mailing Address	450 HILLSIDE AVE, MILL VALLEY, CA 94941-1151
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Mar 17, 2017	Deed of Trust, Mortgage · Conventional Mortgage FIRST BANK
Jul 20, 2017	Deed of Trust, Mortgage · Commercial Mortgage FIRST BANK
Apr 28, 2020	Grant Deed, Transfer · Conventional Mortgage FIRST REPUBLIC BANK
Dec 28, 2017	Quit Claim Deed, Transfer ATTORNEY ONLY
Dec 28, 2017	Quit Claim Deed, Transfer ATTORNEY ONLY
Dec 28, 2017	Quit Claim Deed, Transfer ATTORNEY ONLY

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Apr 28, 2020 · Amount on Record
Deed Sale	Apr 28, 2020 · Amount on Record
Prior Sale	Nov 30, 2010 · Amount on Record
Deed Document Number	202016655
Prior Transfer Date	Dec 8, 2017
Prior Transfer Doc	0000051746
Record Updated	Sep 20, 2026

March 2017: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	450 HILLSIDE AVE, MILL VALLEY, CA 94941-1151
Transaction Type	Mortgage
Record Updated	Jul 21, 2022
Title Company	FIRST AMERICAN TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000011328
Date	Mar 17, 2017
Instrument	2017-0011328

Lender

Name	FIRST BANK
Type	Bank
Address	SAINT LOUIS, MO 63141

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Apr 1, 2047

Interest

Rate Type	Adjustable Rate

July 2017: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	450 HILLSIDE AVE, MILL VALLEY, CA 94941-1151
Transaction Type	Mortgage
Record Updated	Jul 21, 2022
Title Company	FIRST AMERICAN TITLE INS CO

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000028798
Date	Jul 20, 2017
Instrument	2017-0028798

Lender

Name	FIRST BANK
Type	Bank
Address	HAZELWOOD, MO 63042

Agreement

Type	Commercial Mortgage
Amount	Amount Recorded

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

April 2020: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	MARIN CA
Recording Date	Apr 28, 2020
Property Address	450 HILLSIDE AVE, MILL VALLEY, CA 94941-1151
Document Number	0000016655
Map Reference	MB 3 PG 51
Instrument Date	Apr 23, 2020
Instrument	2020-0016655
Transaction Type	Transfer
Record Updated	Jul 21, 2022
Title Company	FIDELITY NATIONAL TITLE CO

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$3,883.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	450 HILLSIDE AVE, MILL VALLEY, CA 94941-1151

Mortgage

Document Number	0000016656
Date	Apr 28, 2020
Instrument	2020-0016656

Lender

Name	FIRST REPUBLIC BANK
Type	Bank

Agreement

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

Interest

Rate Type	Adjustable Rate
Rate	3.2%
Type Change Date	May 1, 2030
Change Frequency	Monthly
Min Rate At Change	2.95%
Index	1-Year CMT
Max Rate	10.9%

December 2017: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	MARIN CA
Recording Date	Dec 28, 2017
Property Address	450 HILLSIDE AVE, MILL VALLEY, CA 94941-1151
Document Number	0000051746
Instrument Date	Dec 8, 2017
Instrument	51746
Transaction Type	Transfer
Record Updated	Nov 20, 2018
Title Company	ATTORNEY ONLY

Transaction

Tax	$0.00
Additional	Quitclaim Multiple Parcels

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Personal Trust
Address	450 HILLSIDE AVE MILL VALLEY CA 949411151, MILL VALLEY, CA 94941-1151

December 2017: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	MARIN CA
Recording Date	Dec 28, 2017
Property Address	450 HILLSIDE AVE, MILL VALLEY, CA 94941-1151
Document Number	0000051745
Instrument Date	Dec 8, 2017
Instrument	51745
Transaction Type	Transfer
Record Updated	Dec 9, 2020
Title Company	ATTORNEY ONLY

Transaction

Tax	$0.00
Additional	Quitclaim

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property
Address	450 HILLSIDE AVE MILL VALLEY CA 949411151, MILL VALLEY, CA 94941-1151

December 2017: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	MARIN CA
Recording Date	Dec 28, 2017
Property Address	450 HILLSIDE AVE, MILL VALLEY, CA 94941-1151
Document Number	0000051745
Instrument Date	Dec 8, 2017
Instrument	51745
Transaction Type	Transfer
Record Updated	Jan 18, 2018
Title Company	ATTORNEY ONLY

Transaction

Tax	$0.00
Additional	Quitclaim Multiple Parcels

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property
Address	450 HILLSIDE AVE MILL VALLEY CA 949411151, MILL VALLEY, CA 94941-1151

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		$3,937,715 (+2%) Land $2,231,000 Building $1,706,715
2025	$48,038.00 (+4.97%) Homeowner's exemption	$3,860,513 (+4.04%) Land $2,187,260 Building $1,673,253
2023	$45,764.00 (+3.65%) Homeowner's exemption	$3,710,630 Land $2,102,340 Building $1,608,290
2022	$44,152.00

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	Moderate above 40% of the US · lower than 76% of California
Wildfire Likelihood	0.06% 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.

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