409 Throckmorton Ave, Mill Valley, CA 94941 Property Records

Marin County property record for 409 Throckmorton Ave, Mill Valley, CA 94941

Property Summary

Property Type	Single Family Home
Details	4 bd · 3.5 ba · 2,167 sqft · built 1908
Lot Size	0.108 acres (4,720 sqft)
Owner	2 Individual Names on Record
Last Sale	$3,250,000 (May 2022)
Tax Bill	$43,085 (2025)
Deeds & Mortgages	May 2022 Sale & Mortgage Nov 2021 Mortgage + 2 more
Flood Zone	Zone X (minimal risk)
APN	`028-091-01`

Property Details

APN / Parcel Number

Primary APN	`028-091-01`

Interior

Bedrooms	4 Beds
Full Baths	3.5 Baths
Half Baths	1 Half Bath
Total Rooms	6 Rooms
Stories	1 Story
Building Area	2,167 sqft Living Area
Basement Area	505 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1908
Effective Year Built	Effective 1979
Architectural Style	Contemporary
Exterior Material	Wood Shingle
Construction Type	Frame
Roof Material	Wood Shingle
Lot Area	4,720 sqft (0.108 acres)
Garage Area	270 sqft
Parking Spaces	1 Parking Space
Deck Area	192 sqft
Patio Area	192 sqft

Utilities, Heating & Cooling

Heating System	Central
Sewer	Municipal
Water Source	Commercial

Location & Zoning

Street Address	409 THROCKMORTON AVE
City	MILL VALLEY
State	CA
Zip	94941-2642
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	BLK 17 PART OF LOT 8
Legal Subdivision	TAMALPAIS LAND & WATER CO 05
Legal Block	17
Legal Lot Number	8
Jurisdiction	MARIN CA
Township / Civil Division	SOUTHEAST MARIN
Census Block Group	4
Census Block	4010
Census Tract	127000

Historic Designation

Source: NPS National Register of Historic Places, as of August 1, 2026

Listed Area	Within Dipsea Trail, The listed 2010 · 1 contributing resources · NRIS 10000356

Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.

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	409 THROCKMORTON AVE, MILL VALLEY, CA 94941-2642
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
May 2, 2022	Grant Deed, Transfer · Conventional Mortgage CITIBANK NA
Nov 23, 2021	Deed of Trust, Mortgage · Conventional Mortgage JMAC LENDING INC
May 21, 2020	Deed of Trust, Mortgage · Conventional Mortgage CALIBER HM LOANS
Aug 5, 2019	Deed of Trust, Mortgage · Conventional Mortgage JMAC LENDING

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	May 2, 2022 · Amount on Record
Deed Sale	May 2, 2022 · Amount on Record
Deed Document Number	202218069
Prior Transfer Date	Aug 30, 1996
Prior Transfer Doc	0000047951
Record Updated	Oct 29, 2026

May 2022: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	MARIN CA
Recording Date	May 2, 2022
Property Address	409 THROCKMORTON AVE, MILL VALLEY, CA 94941-2642
Document Number	0000018069
Instrument Date	Apr 19, 2022
Instrument	2022-0018069
Transaction Type	Transfer
Record Updated	May 19, 2022
Title Company	OLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$3,575.00
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	409 THROCKMORTON AVE, MILL VALLEY, CA 94941-2642

Mortgage

Document Number	0000018070
Date	May 2, 2022
Instrument	2022-0018070

Lender

Name	CITIBANK NA
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	360 Months
Due	May 1, 2052

Interest

Rate Type	Adjustable Rate
Rate	3%
Type Change Date	May 1, 2032
Change Frequency	6 Months
Min Rate At Change	2.75%
Max Rate At Change	8%
Index	Other
Max Rate	8%

November 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	409 THROCKMORTON AVE, MILL VALLEY, CA 94941-2642
Transaction Type	Mortgage
Record Updated	Dec 8, 2021
Title Company	LAWYERS TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	409 THROCKMORTON AVE, MILL VALLEY, CA 94941-2642

Mortgage

Document Number	0000069975
Date	Nov 23, 2021
Instrument	2021-0069975

Lender

Name	JMAC LENDING INC
Type	Mortgage Company
Address	SANTA ANA, CA 92705

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Dec 1, 2051

May 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	409 THROCKMORTON AVE, MILL VALLEY, CA 94941-2642
Document Number	0000022721
Instrument Date	May 21, 2020
Transaction Type	Mortgage
Record Updated	Jun 18, 2020
Title Company	MORTGAGE CONNECT

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Separate Estate/Property
Address	409 THROCKMORTON AVE MILL VALLEY CA 949412642, MILL VALLEY, CA 94941-2642

Mortgage

Document Number	0000022721
Date	Jun 8, 2020
Instrument	22721

Lender

Name	CALIBER HM LOANS
Type	Funding / Finance Company
Address	COPPELL, TX 75019

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	180 Months
Due	Jun 7, 2035

August 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	409 THROCKMORTON AVE, MILL VALLEY, CA 94941-2642
Document Number	0000028466
Instrument Date	Aug 5, 2019
Transaction Type	Mortgage
Record Updated	Aug 23, 2019
Title Company	LAWYERS TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Separate Estate/Property
Address	409 THROCKMORTON AVE MILL VALLEY CA 949412642, MILL VALLEY, CA 94941-2642

Mortgage

Document Number	0000028466
Date	Aug 12, 2019
Instrument	28466

Lender

Name	JMAC LENDING
Type	Funding / Finance Company
Address	SANTA ANA, CA 92705

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	180 Months
Due	Aug 11, 2034

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		$3,565,000 (+2.44%) Land $1,950,000 Building $1,615,000
2025	$43,085.00 (+3.56%)	$3,480,000 (+4.98%) Land $1,950,000 Building $1,530,000
2023	$41,604.00 (+182.31%)	$3,315,000 Land $1,989,000 Building $1,326,000
2022	$14,737.00

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
Nearest Special Flood Hazard Area	Zone AE, within 500 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	2 (2005–2007)
Claims Outside the SFHA	1 of 2
Most Recent Claim	May 2007 · 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 65% of the US · lower than 79% of California
Wildfire Likelihood	0.04% 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 340 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
AT&T Fiber · DSL in parts of the area	5,000 / 5,000
Xfinity Cable	2,000 / 250

May also be available: Unwired, Verizon.

Cell Coverage

5G (outdoors only) and 4G LTE

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